Advance version number to 1.22.2

Don't use the static `windowInsets` when `setWindowInsetListener()`
is called because this is just for pre-Lollipop devices where
`ViewCompat.setOnApplyWindowInsetsListener(view)` *never* fires.

CHANGELOG.md

@@ -1,5 +1,41 @@
 # Change Log
 
+# 1.22.2
+* Fix getting window insets for Android Lollipop and above
+
+# 1.22.1
+* Ensure non-printable content is saved as raw data
+
+# 1.22.0
+* Highlight detected barcodes in camera view
+* Add bing and yandex search engines
+* Update Chinese Translation
+* Update Italian translation
+* Update Indonesian translation
+
+# 1.21.0
+* Save and restore history list state
+* Improve scanning from large images
+* Fix opening image files by "Open with"
+
+# 1.20.1
+* Fix window insets below Android Lollipop
+
+# 1.20.0
+* Scroll content below tool and system bars
+* Preset file name to save with format and content
+* Add encode menu item to make encoding easier when keyboard is visible
+* Increase font size of barcode contents in history
+* Update Hungarian translation
+* Update Indonesian translation
+* Fix encoding for old Androids
+* Fix returning result for ZXing's SCAN intent again
+* Fix transfering barcode format from history
+
+# 1.19.0
+* Allow scaling a new barcode to half its size
+* Remember last selected barcode format
+
 # 1.18.0
 * Make open URL default action after decoding a barcode
 * Add a setting to open contents without inspection

CONTRIBUTING.md

@@ -13,7 +13,7 @@ to squash when merging into master:
 
 	$ git merge cool_feature --squash
 
-Then write a [good commit messages][commit_messages] to keep the history
+Then write a [good commit message][commit_messages] to keep the history
 meaningful and useful. One feature, one commit.
 
 [android_best_practices]: https://developer.android.com/distribute/best-practices/develop/

README.md

@@ -2,15 +2,51 @@
 
 Yet another barcode scanner for Android. As if there weren't [enough][play].
 
-This one is totally free, open source and does use the [ZXing][zxing] barcode
-scanning library.
+This one is free, without any ads and open source.
 
-Unlike many others, it works in portrait and landscape orientation, can read
-inverted codes, comes in Material Design and doesn't do much else but decoding
-a barcode.
+Works in portrait and landscape orientation, can read inverted codes,
+comes in Material Design and can also generate barcodes.
 
-And it's written in [Kotlin][kotlin] because I wanted to explore that a
-bit more.
+Binary Eye uses the [ZXing][zxing] ("Zebra Crossing") barcode scanning
+library.
+
+## Supported Barcode Formats
+
+### Read
+
+ZXing can _read_ the following barcode formats:
+* [AZTEC][aztec]
+* [CODABAR][codabar]
+* [CODE 39][code_39]
+* [CODE 93][code_93]
+* [CODE 128][code_128]
+* [DATA MATRIX][data_matrix]
+* [EAN 8][ean_8]
+* [EAN 13][ean_13]
+* [ITF][itf]
+* [MAXICODE][maxicode]
+* [PDF417][pdf417]
+* [QR CODE][qr_code]
+* [RSS 14][rss]
+* [RSS EXPANDED][rss]
+* [UPC A][upc_a]
+* [UPC E][upc_e]
+* [UPC EAN EXTENSION][upc_ean]
+
+### Generate
+
+ZXing can _generate_ the following barcode formats:
+* [AZTEC][aztec]
+* [CODABAR][codabar]
+* [CODE 39][code_39]
+* [CODE 128][code_128]
+* [DATA MATRIX][data_matrix]
+* [EAN 8][ean_8]
+* [EAN 13][ean_13]
+* [ITF][itf]
+* [PDF 417][pdf417]
+* [QR CODE][qr_code]
+* [UPC A][upc_a]
 
 ## Screenshots
 
@@ -31,3 +67,19 @@ bit more.
 [play]: https://play.google.com/store/search?q=barcode%20scanner&c=apps
 [zxing]: https://github.com/zxing/zxing
 [kotlin]: http://kotlinlang.org/
+[aztec]: https://en.wikipedia.org/wiki/Aztec_Code
+[codabar]: https://en.wikipedia.org/wiki/Codabar
+[code_39]: https://en.wikipedia.org/wiki/Code_39
+[code_93]: https://en.wikipedia.org/wiki/Code_93
+[code_128]: https://en.wikipedia.org/wiki/Code_128
+[data_matrix]: https://en.wikipedia.org/wiki/Data_Matrix
+[ean_8]: https://en.wikipedia.org/wiki/EAN-8
+[ean_13]: https://en.wikipedia.org/wiki/International_Article_Number
+[itf]: https://en.wikipedia.org/wiki/Interleaved_2_of_5
+[maxicode]: https://en.wikipedia.org/wiki/MaxiCode
+[pdf417]: https://en.wikipedia.org/wiki/PDF417
+[qr_code]: https://en.wikipedia.org/wiki/QR_code
+[rss]: https://en.wikipedia.org/wiki/GS1_DataBar
+[upc_a]: https://en.wikipedia.org/wiki/Universal_Product_Code
+[upc_e]: https://en.wikipedia.org/wiki/Universal_Product_Code#UPC-E
+[upc_ean]: https://en.wikipedia.org/wiki/Universal_Product_Code#EAN-13

app/build.gradle

@@ -9,8 +9,8 @@ android {
 		minSdkVersion 9
 		targetSdkVersion sdk_version
 
-		versionCode 46
-		versionName '1.18.0'
+		versionCode 54
+		versionName '1.22.2'
 
 		// it's recommended to set this value to the lowest API level
 		// able to provide all the functionality
@@ -18,6 +18,8 @@ android {
 		renderscriptSupportModeEnabled true
 
 		testInstrumentationRunner 'android.support.test.runner.AndroidJUnitRunner'
+
+		buildConfigField 'boolean', 'IS_CATALINA', is_catalina.toString()
 	}
 
 	signingConfigs {
@@ -58,10 +60,10 @@ android {
 }
 
 dependencies {
-	androidTestImplementation ('com.android.support.test:runner:1.0.2') {
+	androidTestImplementation('com.android.support.test:runner:1.0.2') {
 		exclude module: 'support-annotations'
 	}
-	androidTestImplementation ('com.android.support.test:rules:1.0.2') {
+	androidTestImplementation('com.android.support.test:rules:1.0.2') {
 		exclude module: 'support-annotations'
 	}
 	testImplementation 'junit:junit:4.12'
@@ -74,5 +76,5 @@ dependencies {
 	// https://github.com/zxing/zxing/issues/1170
 	implementation 'com.google.zxing:core:3.3.3'
 	implementation 'com.github.markusfisch:CameraView:1.8.4'
-	implementation 'com.github.markusfisch:ScalingImageView:1.1.4'
+	implementation 'com.github.markusfisch:ScalingImageView:1.2.0'
 }

app/lint.xml

@@ -3,10 +3,10 @@
 	<!-- Lint can't understand Kotlin sources and reports all resources
 		as unused -->
 	<issue id="UnusedResources">
-		<ignore path="src/main/res/"/>
+		<ignore path="src/main/res/" />
 	</issue>
 	<!-- Ignore RenderScript output  -->
 	<issue id="UnusedResources">
-		<ignore path="*/res/rs/debug/raw/bc*"/>
+		<ignore path="*/res/rs/debug/raw/bc*" />
 	</issue>
 </lint>

app/src/main/AndroidManifest.xml

@@ -16,8 +16,9 @@
 		tools:ignore="UnusedAttribute"
 		android:name=".app.BinaryEyeApp"
 		android:allowBackup="true"
-		android:fullBackupContent="true"
+		android:fullBackupContent="@xml/backup_rules"
 		android:supportsRtl="true"
+		android:resizeableActivity="true"
 		android:label="@string/app_name"
 		android:icon="@mipmap/ic_launcher"
 		android:theme="@style/AppTheme">
@@ -54,7 +55,8 @@
 		</activity>
 		<activity
 			android:name=".activity.PickActivity"
-			android:label="@string/pick_code_to_scan">
+			android:label="@string/pick_code_to_scan"
+			tools:ignore="AppLinkUrlError">
 			<intent-filter android:label="@string/decode_barcode">
 				<action android:name="android.intent.action.SEND"/>
 				<category android:name="android.intent.category.DEFAULT"/>
@@ -63,7 +65,7 @@
 			<intent-filter android:label="@string/decode_barcode">
 				<action android:name="android.intent.action.VIEW"/>
 				<category android:name="android.intent.category.DEFAULT"/>
-				<data android:mimeType="image/*" android:scheme="file"/>
+				<data android:mimeType="image/*"/>
 			</intent-filter>
 		</activity>
 		<activity

app/src/main/kotlin/de/markusfisch/android/binaryeye/activity/CameraActivity.kt

@@ -22,7 +22,10 @@ import de.markusfisch.android.binaryeye.app.db
 import de.markusfisch.android.binaryeye.app.hasCameraPermission
 import de.markusfisch.android.binaryeye.app.initSystemBars
 import de.markusfisch.android.binaryeye.app.prefs
+import de.markusfisch.android.binaryeye.graphics.Mapping
+import de.markusfisch.android.binaryeye.graphics.frameToView
 import de.markusfisch.android.binaryeye.rs.Preprocessor
+import de.markusfisch.android.binaryeye.widget.DetectorView
 import de.markusfisch.android.binaryeye.zxing.Zxing
 import de.markusfisch.android.cameraview.widget.CameraView
 import kotlinx.coroutines.GlobalScope
@@ -33,12 +36,14 @@ class CameraActivity : AppCompatActivity() {
 
 	private lateinit var vibrator: Vibrator
 	private lateinit var cameraView: CameraView
+	private lateinit var detectorView: DetectorView
 	private lateinit var zoomBar: SeekBar
 	private lateinit var flashFab: View
 
 	private var preprocessor: Preprocessor? = null
 	private var invert = false
 	private var flash = false
+	private var returnResult = false
 	private var frontFacing = false
 	private var fallbackBuffer: IntArray? = null
 
@@ -82,12 +87,13 @@ class CameraActivity : AppCompatActivity() {
 		super.onCreate(state)
 		setContentView(R.layout.activity_camera)
 
+		vibrator = getSystemService(Context.VIBRATOR_SERVICE) as Vibrator
+
 		initSystemBars(this)
 		setSupportActionBar(findViewById(R.id.toolbar) as Toolbar)
 
-		vibrator = getSystemService(Context.VIBRATOR_SERVICE) as Vibrator
-
 		cameraView = findViewById(R.id.camera_view) as CameraView
+		detectorView = findViewById(R.id.detector_view) as DetectorView
 		zoomBar = findViewById(R.id.zoom) as SeekBar
 		flashFab = findViewById(R.id.flash)
 		flashFab.setOnClickListener { toggleTorchMode() }
@@ -113,6 +119,7 @@ class CameraActivity : AppCompatActivity() {
 	override fun onResume() {
 		super.onResume()
 		System.gc()
+		returnResult = "com.google.zxing.client.android.SCAN" == intent.action
 		if (hasCameraPermission(this, REQUEST_CAMERA)) {
 			openCamera()
 		}
@@ -262,6 +269,7 @@ class CameraActivity : AppCompatActivity() {
 				val frameWidth = cameraView.frameWidth
 				val frameHeight = cameraView.frameHeight
 				val frameOrientation = cameraView.frameOrientation
+				var mapping: Mapping? = null
 				var decoding = true
 				camera.setPreviewCallback { frameData, _ ->
 					if (decoding) {
@@ -272,9 +280,25 @@ class CameraActivity : AppCompatActivity() {
 							frameOrientation
 						)
 						result?.let {
+							preprocessor?.let {
+								mapping = mapping ?: frameToView(
+									it.outWidth,
+									it.outHeight,
+									cameraView.previewRect
+								)
+							}
 							cameraView.post {
+								mapping?.let {
+									detectorView.mark(
+										it.map(result.resultPoints)
+									)
+								}
 								vibrator.vibrate(100)
-								showResult(this@CameraActivity, result)
+								showResult(
+									this@CameraActivity,
+									result,
+									returnResult
+								)
 							}
 							decoding = false
 						}

app/src/main/kotlin/de/markusfisch/android/binaryeye/activity/MainActivity.kt

@@ -8,9 +8,10 @@ import android.support.v7.app.AppCompatActivity
 import android.support.v7.widget.Toolbar
 import com.google.zxing.BarcodeFormat
 import de.markusfisch.android.binaryeye.R
+import de.markusfisch.android.binaryeye.app.colorSystemAndToolBars
 import de.markusfisch.android.binaryeye.app.initSystemBars
 import de.markusfisch.android.binaryeye.app.setFragment
-import de.markusfisch.android.binaryeye.app.setSystemAndToolBarTransparency
+import de.markusfisch.android.binaryeye.app.setupInsets
 import de.markusfisch.android.binaryeye.fragment.DecodeFragment
 import de.markusfisch.android.binaryeye.fragment.EncodeFragment
 import de.markusfisch.android.binaryeye.fragment.HistoryFragment
@@ -30,13 +31,15 @@ class MainActivity : AppCompatActivity() {
 	override fun onCreate(state: Bundle?) {
 		super.onCreate(state)
 		setContentView(R.layout.activity_main)
-		initSystemBars(this)
 
-		setSupportActionBar(findViewById(R.id.toolbar) as Toolbar)
+		initSystemBars(this)
+		val toolbar = findViewById(R.id.toolbar) as Toolbar
+		setupInsets(findViewById(android.R.id.content), toolbar)
+		setSupportActionBar(toolbar)
 		supportActionBar?.setDisplayHomeAsUpEnabled(true)
 
 		supportFragmentManager.addOnBackStackChangedListener {
-			setSystemAndToolBarTransparency(this@MainActivity)
+			colorSystemAndToolBars(this@MainActivity)
 		}
 
 		if (state == null) {

app/src/main/kotlin/de/markusfisch/android/binaryeye/activity/PickActivity.kt

@@ -1,12 +1,14 @@
 package de.markusfisch.android.binaryeye.activity
 
+import android.content.Context
 import android.content.Intent
 import android.graphics.Bitmap
+import android.graphics.Point
 import android.graphics.Rect
 import android.net.Uri
 import android.os.Bundle
 import android.os.Parcelable
-import android.provider.MediaStore
+import android.os.Vibrator
 import android.support.v7.app.AppCompatActivity
 import android.support.v7.widget.Toolbar
 import android.view.Menu
@@ -14,36 +16,37 @@ import android.view.MenuItem
 import android.widget.Toast
 import com.google.zxing.Result
 import de.markusfisch.android.binaryeye.R
+import de.markusfisch.android.binaryeye.app.colorSystemAndToolBars
 import de.markusfisch.android.binaryeye.app.initSystemBars
-import de.markusfisch.android.binaryeye.app.setSystemAndToolBarTransparency
+import de.markusfisch.android.binaryeye.app.setWindowInsetListener
+import de.markusfisch.android.binaryeye.app.setupInsets
 import de.markusfisch.android.binaryeye.graphics.crop
-import de.markusfisch.android.binaryeye.graphics.downsizeIfBigger
+import de.markusfisch.android.binaryeye.graphics.loadImageUri
+import de.markusfisch.android.binaryeye.graphics.mapResult
 import de.markusfisch.android.binaryeye.widget.CropImageView
 import de.markusfisch.android.binaryeye.zxing.Zxing
-import java.io.IOException
-import kotlin.math.min
-import kotlin.math.max
 
 class PickActivity : AppCompatActivity() {
 	private val zxing = Zxing()
 
+	private lateinit var vibrator: Vibrator
 	private lateinit var cropImageView: CropImageView
 
-	private var returnResult = false
-
 	override fun onCreate(state: Bundle?) {
 		super.onCreate(state)
 		setContentView(R.layout.activity_pick)
-		initSystemBars(this)
 
-		setSupportActionBar(findViewById(R.id.toolbar) as Toolbar)
+		vibrator = getSystemService(Context.VIBRATOR_SERVICE) as Vibrator
+
+		initSystemBars(this)
+		val toolbar = findViewById(R.id.toolbar) as Toolbar
+		setupInsets(findViewById(android.R.id.content), toolbar)
+		setSupportActionBar(toolbar)
 
 		supportFragmentManager.addOnBackStackChangedListener {
-			setSystemAndToolBarTransparency(this@PickActivity)
+			colorSystemAndToolBars(this@PickActivity)
 		}
 
-		returnResult = intent?.action == "com.google.zxing.client.android.SCAN"
-
 		val bitmap = if (
 			intent?.action == Intent.ACTION_SEND &&
 			intent.type?.startsWith("image/") == true
@@ -69,7 +72,7 @@ class PickActivity : AppCompatActivity() {
 		}
 
 		val scannedRect = Rect()
-		val scanBounds: () -> Result? = {
+		val scanWithinBounds: () -> Result? = {
 			var result: Result? = null
 			crop(
 				bitmap,
@@ -85,35 +88,24 @@ class PickActivity : AppCompatActivity() {
 		cropImageView = findViewById(R.id.image) as CropImageView
 		cropImageView.setImageBitmap(bitmap)
 		cropImageView.onScan = {
-			val rect = Rect()
-			scanBounds()?.also {
-				rect.left = Int.MAX_VALUE
-				rect.top = Int.MAX_VALUE
-				for (rp in it.resultPoints) {
-					val x = rp.x.toInt()
-					val y = rp.y.toInt()
-					rect.left = min(rect.left, x)
-					rect.right = max(rect.right, x)
-					rect.top = min(rect.top, y)
-					rect.bottom = max(rect.bottom, y)
-				}
-				// map result points onto view
-				val bounds = cropImageView.getBoundsRect()
-				val fx = bounds.width() / scannedRect.width().toFloat()
-				val fy = bounds.height() / scannedRect.height().toFloat()
-				rect.set(
-					(rect.left * fx).toInt(),
-					(rect.top * fy).toInt(),
-					(rect.right * fx).toInt(),
-					(rect.bottom * fx).toInt()
+			var points: List<Point>? = null
+			scanWithinBounds()?.let {
+				points = mapResult(
+					scannedRect.width(),
+					scannedRect.height(),
+					cropImageView.getBoundsRect(),
+					it
 				)
-				rect.offset(bounds.left.toInt(), bounds.top.toInt())
+				vibrator.vibrate(100)
 			}
-			rect
+			points
+		}
+		setWindowInsetListener { insets ->
+			cropImageView.windowInsets.set(insets)
 		}
 
 		findViewById(R.id.scan).setOnClickListener {
-			scanImage(scanBounds())
+			scanImage(scanWithinBounds())
 		}
 	}
 
@@ -140,26 +132,17 @@ class PickActivity : AppCompatActivity() {
 		val uri = intent.getParcelableExtra<Parcelable>(
 			Intent.EXTRA_STREAM
 		) as? Uri ?: return null
-		return loadImageUri(uri)
+		return loadImageUri(contentResolver, uri)
 	}
 
 	private fun loadImageToOpen(intent: Intent): Bitmap? {
 		val uri = intent.data ?: return null
-		return loadImageUri(uri)
-	}
-
-	private fun loadImageUri(uri: Uri): Bitmap? = try {
-		downsizeIfBigger(
-			MediaStore.Images.Media.getBitmap(contentResolver, uri),
-			1024
-		)
-	} catch (e: IOException) {
-		null
+		return loadImageUri(contentResolver, uri)
 	}
 
 	private fun scanImage(result: Result?) {
 		if (result != null) {
-			showResult(this, result, returnResult)
+			showResult(this, result)
 			finish()
 			return
 		}

app/src/main/kotlin/de/markusfisch/android/binaryeye/adapter/ScansAdapter.kt

@@ -20,11 +20,9 @@ class ScansAdapter(context: Context, cursor: Cursor) :
 		context: Context,
 		cursor: Cursor,
 		parent: ViewGroup
-	): View {
-		return LayoutInflater.from(parent.context).inflate(
-			R.layout.row_scan, parent, false
-		)
-	}
+	) = LayoutInflater.from(parent.context).inflate(
+		R.layout.row_scan, parent, false
+	)
 
 	override fun bindView(
 		view: View,

app/src/main/kotlin/de/markusfisch/android/binaryeye/app/BinaryEyeApp.kt

@@ -2,6 +2,7 @@ package de.markusfisch.android.binaryeye.app
 
 import android.app.Application
 import android.support.v8.renderscript.RenderScript
+import de.markusfisch.android.binaryeye.BuildConfig
 import de.markusfisch.android.binaryeye.preference.Preferences
 import de.markusfisch.android.binaryeye.repository.DatabaseRepository
 
@@ -12,9 +13,19 @@ class BinaryEyeApp : Application() {
 	override fun onCreate() {
 		super.onCreate()
 
-		// required to make RenderScript work for Lineage 16.0
-		// possibly because of a system/device bug
-		RenderScript.forceCompat()
+		// Since RenderScript can no longer be compiled on macOS Catalina
+		// because Catalina cannot run 32bit binaries and Google failed
+		// to provide a 64bit compiler in time. Now, as if that wasn't
+		// bad enough, `RenderScript.forceCompat()` makes any build compiled
+		// with the new build tools that provide a 64bit compiler crash
+		// so we need to exclude this if we're building on Catalina.
+		// Maybe `RenderScript.forceCompat()` isn't required anymore for
+		// those new builds but I don't have a device to test this.
+		if (!BuildConfig.IS_CATALINA) {
+			// required to make RenderScript work for Lineage 16.0
+			// possibly because of a system/device bug
+			RenderScript.forceCompat()
+		}
 
 		db.open(this)
 		prefs.init(this)

app/src/main/kotlin/de/markusfisch/android/binaryeye/app/SystemBars.kt

@@ -1,17 +1,18 @@
 package de.markusfisch.android.binaryeye.app
 
 import android.content.Context
+import android.content.ContextWrapper
 import android.graphics.Rect
 import android.graphics.drawable.ColorDrawable
 import android.os.Build
 import android.support.v4.content.ContextCompat
 import android.support.v4.view.ViewCompat
 import android.support.v7.app.AppCompatActivity
+import android.support.v7.widget.Toolbar
 import android.view.View
 import android.widget.AbsListView
 import de.markusfisch.android.binaryeye.R
 
-val windowInsets = Rect()
 val systemBarScrollListener = object : AbsListView.OnScrollListener {
 	override fun onScroll(
 		view: AbsListView,
@@ -25,8 +26,8 @@ val systemBarScrollListener = object : AbsListView.OnScrollListener {
 			val scrolled = firstVisibleItem > 0 ||
 					(totalItemCount > 0 && view.getChildAt(0).top < 0)
 			val scrollable = if (scrolled) true else totalItemCount > 0 &&
-					view.getChildAt(view.lastVisiblePosition).bottom > view.height
-			setSystemAndToolBarTransparency(view.context, scrolled, scrollable)
+					view.getChildAt(view.lastVisiblePosition).bottom >= view.height
+			colorSystemAndToolBars(view.context, scrolled, scrollable)
 		}
 	}
 
@@ -37,16 +38,25 @@ val systemBarScrollListener = object : AbsListView.OnScrollListener {
 	}
 }
 
-fun setSystemAndToolBarTransparency(
+fun initSystemBars(activity: AppCompatActivity) {
+	if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
+		activity.window.decorView.systemUiVisibility =
+			View.SYSTEM_UI_FLAG_LAYOUT_STABLE or
+					View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION or
+					View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
+	}
+	colorSystemAndToolBars(activity)
+}
+
+fun colorSystemAndToolBars(
 	context: Context,
 	scrolled: Boolean = false,
 	scrollable: Boolean = false
 ) {
-	val opaqueColor = ContextCompat.getColor(context, R.color.primary)
-	val transparentColor = 0x00000000
-	val topColor = if (scrolled) opaqueColor else transparentColor
-	val bottomColor = if (scrolled || scrollable) opaqueColor else transparentColor
-	val activity = context as AppCompatActivity
+	val translucentColor = getTranslucentPrimaryColor(context)
+	val topColor = if (scrolled) translucentColor else 0
+	val bottomColor = if (scrolled || scrollable) translucentColor else 0
+	val activity = getAppCompatActivity(context) ?: return
 	if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
 		val window = activity.window
 		window.statusBarColor = topColor
@@ -55,29 +65,54 @@ fun setSystemAndToolBarTransparency(
 	activity.supportActionBar?.setBackgroundDrawable(ColorDrawable(topColor))
 }
 
-fun initSystemBars(activity: AppCompatActivity) {
-	activity.findViewById(R.id.main_layout)?.also { view ->
-		setWindowInsetListener(view)
+private fun getTranslucentPrimaryColor(context: Context) = ContextCompat.getColor(
+	context,
+	R.color.primary
+) and 0xffffff or 0xd8000000.toInt()
+
+private fun getAppCompatActivity(context: Context): AppCompatActivity? {
+	var ctx = context
+	while (ctx is ContextWrapper) {
+		if (ctx is AppCompatActivity) {
+			return ctx
+		}
+		ctx = ctx.baseContext ?: break
 	}
-	if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
-		activity.window.decorView.systemUiVisibility =
-			View.SYSTEM_UI_FLAG_LAYOUT_STABLE or
-					View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION or
-					View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
-	}
-	setSystemAndToolBarTransparency(activity)
+	return null
 }
 
-private fun setWindowInsetListener(view: View) {
-	ViewCompat.setOnApplyWindowInsetsListener(view) { _, insets ->
-		if (insets.hasSystemWindowInsets()) {
-			val left = insets.systemWindowInsetLeft
-			val top = insets.systemWindowInsetTop
-			val right = insets.systemWindowInsetRight
-			val bottom = insets.systemWindowInsetBottom
-			view.setPadding(left, top, right, bottom)
-			windowInsets.set(left, top, right, bottom)
-		}
-		insets.consumeSystemWindowInsets()
+private var windowInsetsListener: ((insets: Rect) -> Unit)? = null
+// invoke this from Fragment.onCreateView() *or* Activity.onCreate()
+fun setWindowInsetListener(listener: (insets: Rect) -> Unit) {
+	if (Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP) {
+		listener(windowInsets)
+	} else {
+		windowInsetsListener = listener
+	}
+}
+
+private val windowInsets = Rect()
+// invoke this from Activity.onCreate() to setup listening for insets
+fun setupInsets(view: View, toolbar: Toolbar) {
+	val toolBarHeight = toolbar.layoutParams.height
+	if (Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP) {
+		// save insets so setWindowInsetListener() can return them
+		// when it's called from Fragment.onCreateView() later on
+		windowInsets.set(0, toolBarHeight, 0, 0)
+		windowInsetsListener?.also { it(windowInsets) }
+		return
+	}
+	ViewCompat.setOnApplyWindowInsetsListener(view) { _, insets ->
+		// runs *after* layout and thus *after* Fragment.onCreateView()
+		if (insets.hasSystemWindowInsets()) {
+			windowInsets.set(
+				insets.systemWindowInsetLeft,
+				insets.systemWindowInsetTop + toolBarHeight,
+				insets.systemWindowInsetRight,
+				insets.systemWindowInsetBottom
+			)
+			windowInsetsListener?.also { it(windowInsets) }
+		}
+		insets
 	}
 }

app/src/main/kotlin/de/markusfisch/android/binaryeye/data/Database.kt

@@ -59,9 +59,9 @@ class Database {
 				timestamp
 			).toString()
 		)
-		if (hasNonPrintableCharacters(content) && raw != null) {
+		if (hasNonPrintableCharacters(content)) {
 			cv.put(SCANS_CONTENT, "")
-			cv.put(SCANS_RAW, raw)
+			cv.put(SCANS_RAW, if (raw != null) raw else content.toByteArray())
 		} else {
 			cv.put(SCANS_CONTENT, content)
 		}

app/src/main/kotlin/de/markusfisch/android/binaryeye/fragment/BarcodeFragment.kt

@@ -8,13 +8,15 @@ import android.os.Environment
 import android.support.v4.app.Fragment
 import android.view.*
 import android.widget.EditText
-import android.widget.ImageView
 import android.widget.Toast
 import com.google.zxing.BarcodeFormat
 import de.markusfisch.android.binaryeye.R
 import de.markusfisch.android.binaryeye.app.addSuffixIfNotGiven
 import de.markusfisch.android.binaryeye.app.hasWritePermission
+import de.markusfisch.android.binaryeye.app.setWindowInsetListener
 import de.markusfisch.android.binaryeye.app.shareFile
+import de.markusfisch.android.binaryeye.view.setPadding
+import de.markusfisch.android.binaryeye.widget.ConfinedScalingImageView
 import de.markusfisch.android.binaryeye.zxing.Zxing
 import kotlinx.coroutines.Dispatchers.Main
 import kotlinx.coroutines.GlobalScope
@@ -22,9 +24,12 @@ import kotlinx.coroutines.launch
 import java.io.File
 import java.io.FileOutputStream
 import java.io.IOException
+import java.util.*
 
 class BarcodeFragment : Fragment() {
 	private var barcode: Bitmap? = null
+	private var content: String = ""
+	private var format: BarcodeFormat? = null
 
 	override fun onCreate(state: Bundle?) {
 		super.onCreate(state)
@@ -59,7 +64,18 @@ class BarcodeFragment : Fragment() {
 			fragmentManager.popBackStack()
 			return null
 		}
-		view.findViewById<ImageView>(R.id.barcode).setImageBitmap(barcode)
+		this.content = content
+		this.format = format
+
+		val imageView = view.findViewById<ConfinedScalingImageView>(
+			R.id.barcode
+		)
+		imageView.setImageBitmap(barcode)
+		imageView.post {
+			// make sure to invoke this after ScalingImageView.onLayout()
+			imageView.minWidth /= 2f
+		}
+
 		view.findViewById<View>(R.id.share).setOnClickListener {
 			val bitmap = barcode
 			bitmap?.let {
@@ -67,6 +83,11 @@ class BarcodeFragment : Fragment() {
 			}
 		}
 
+		setWindowInsetListener { insets ->
+			(view.findViewById(R.id.inset_layout) as View).setPadding(insets)
+			imageView.insets.set(insets)
+		}
+
 		return view
 	}
 
@@ -90,6 +111,7 @@ class BarcodeFragment : Fragment() {
 		val ac = activity ?: return
 		val view = ac.layoutInflater.inflate(R.layout.dialog_save_file, null)
 		val editText = view.findViewById<EditText>(R.id.file_name)
+		editText.setText(encodeFileName("${format.toString()}_$content"))
 		AlertDialog.Builder(ac)
 			.setView(view)
 			.setPositiveButton(android.R.string.ok) { _, _ ->
@@ -193,3 +215,7 @@ private fun saveBitmap(bitmap: Bitmap, file: File): Boolean {
 		false
 	}
 }
+
+private val fileNameCharacters = "[^A-Za-z0-9]".toRegex()
+private fun encodeFileName(name: String): String =
+	fileNameCharacters.replace(name, "_").take(16).trim('_').toLowerCase(Locale.getDefault())

app/src/main/kotlin/de/markusfisch/android/binaryeye/fragment/DecodeFragment.kt

@@ -16,6 +16,7 @@ import com.google.zxing.BarcodeFormat
 import de.markusfisch.android.binaryeye.R
 import de.markusfisch.android.binaryeye.actions.ActionRegistry
 import de.markusfisch.android.binaryeye.app.*
+import de.markusfisch.android.binaryeye.view.setPadding
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.Job
@@ -106,6 +107,11 @@ class DecodeFragment : Fragment() {
 
 		updateViewsAndAction(raw)
 
+		setWindowInsetListener { insets ->
+			(view.findViewById(R.id.inset_layout) as View).setPadding(insets)
+			(view.findViewById(R.id.scroll_view) as View).setPadding(insets)
+		}
+
 		return view
 	}
 

app/src/main/kotlin/de/markusfisch/android/binaryeye/fragment/EncodeFragment.kt

@@ -3,19 +3,22 @@ package de.markusfisch.android.binaryeye.fragment
 import android.content.Context
 import android.os.Bundle
 import android.support.v4.app.Fragment
-import android.view.LayoutInflater
-import android.view.View
-import android.view.ViewGroup
+import android.view.*
 import android.view.inputmethod.InputMethodManager
 import android.widget.*
 import com.google.zxing.BarcodeFormat
 import de.markusfisch.android.binaryeye.R
 import de.markusfisch.android.binaryeye.app.addFragment
+import de.markusfisch.android.binaryeye.app.prefs
+import de.markusfisch.android.binaryeye.app.setWindowInsetListener
+import de.markusfisch.android.binaryeye.view.setPadding
 
 class EncodeFragment : Fragment() {
 	private lateinit var formatView: Spinner
 	private lateinit var sizeView: TextView
 	private lateinit var sizeBarView: SeekBar
+	private lateinit var contentView: EditText
+
 	private val writers = arrayListOf(
 		BarcodeFormat.AZTEC,
 		BarcodeFormat.CODABAR,
@@ -30,6 +33,11 @@ class EncodeFragment : Fragment() {
 		BarcodeFormat.UPC_A
 	)
 
+	override fun onCreate(state: Bundle?) {
+		super.onCreate(state)
+		setHasOptionsMenu(true)
+	}
+
 	override fun onCreateView(
 		inflater: LayoutInflater,
 		container: ViewGroup?,
@@ -55,40 +63,72 @@ class EncodeFragment : Fragment() {
 		sizeBarView = view.findViewById(R.id.size_bar)
 		initSizeBar()
 
-		val contentView = view.findViewById<EditText>(R.id.content)
+		contentView = view.findViewById<EditText>(R.id.content)
 
 		val args = arguments
-		args?.let {
-			contentView.setText(args.getString(CONTENT))
-			formatView.setSelection(
-				writers.indexOf(
-					args.getSerializable(FORMAT) as BarcodeFormat?
-				)
-			)
+		args?.also {
+			contentView.setText(it.getString(CONTENT))
 		}
 
-		view.findViewById<View>(R.id.encode).setOnClickListener { v ->
-			val format = writers[formatView.selectedItemPosition]
-			val size = getSize(sizeBarView.progress)
-			val content = contentView.text.toString()
-			if (content.isEmpty()) {
-				Toast.makeText(
-					v.context,
-					R.string.error_no_content,
-					Toast.LENGTH_SHORT
-				).show()
-			} else {
-				hideSoftKeyboard(contentView)
-				addFragment(
-					fragmentManager,
-					BarcodeFragment.newInstance(content, format, size)
-				)
+		val barcodeFormat = args?.getSerializable(FORMAT) as BarcodeFormat?
+		if (barcodeFormat != null) {
+			formatView.setSelection(writers.indexOf(barcodeFormat))
+		} else if (state == null) {
+			formatView.post {
+				formatView.setSelection(prefs.indexOfLastSelectedFormat)
 			}
 		}
 
+		view.findViewById<View>(R.id.encode).setOnClickListener { v ->
+			encode()
+		}
+
+		setWindowInsetListener { insets ->
+			(view.findViewById(R.id.inset_layout) as View).setPadding(insets)
+			(view.findViewById(R.id.scroll_view) as View).setPadding(insets)
+		}
+
 		return view
 	}
 
+	override fun onPause() {
+		super.onPause()
+		prefs.indexOfLastSelectedFormat = formatView.selectedItemPosition
+	}
+
+	override fun onCreateOptionsMenu(menu: Menu, inflater: MenuInflater) {
+		inflater.inflate(R.menu.fragment_encode, menu)
+	}
+
+	override fun onOptionsItemSelected(item: MenuItem): Boolean {
+		return when (item.itemId) {
+			R.id.next -> {
+				encode()
+				true
+			}
+			else -> super.onOptionsItemSelected(item)
+		}
+	}
+
+	private fun encode() {
+		val format = writers[formatView.selectedItemPosition]
+		val size = getSize(sizeBarView.progress)
+		val content = contentView.text.toString()
+		if (content.isEmpty()) {
+			Toast.makeText(
+				context,
+				R.string.error_no_content,
+				Toast.LENGTH_SHORT
+			).show()
+		} else {
+			hideSoftKeyboard(contentView)
+			addFragment(
+				fragmentManager,
+				BarcodeFragment.newInstance(content, format, size)
+			)
+		}
+	}
+
 	private fun initSizeBar() {
 		updateSize(sizeBarView.progress)
 		sizeBarView.setOnSeekBarChangeListener(
@@ -129,11 +169,13 @@ class EncodeFragment : Fragment() {
 
 		fun newInstance(
 			content: String,
-			format: BarcodeFormat = BarcodeFormat.AZTEC
+			format: BarcodeFormat? = null
 		): Fragment {
 			val args = Bundle()
 			args.putString(CONTENT, content)
-			args.putSerializable(FORMAT, format)
+			format?.let {
+				args.putSerializable(FORMAT, format)
+			}
 			val fragment = EncodeFragment()
 			fragment.arguments = args
 			return fragment

app/src/main/kotlin/de/markusfisch/android/binaryeye/fragment/HistoryFragment.kt

@@ -3,10 +3,12 @@ package de.markusfisch.android.binaryeye.fragment
 import android.app.AlertDialog
 import android.content.Context
 import android.os.Bundle
+import android.os.Parcelable
 import android.support.annotation.WorkerThread
 import android.support.v4.app.Fragment
 import android.support.v7.widget.SwitchCompat
 import android.view.*
+import android.widget.AbsListView
 import android.widget.ListView
 import android.widget.Toast
 import com.google.zxing.BarcodeFormat
@@ -15,6 +17,7 @@ import de.markusfisch.android.binaryeye.adapter.ScansAdapter
 import de.markusfisch.android.binaryeye.app.*
 import de.markusfisch.android.binaryeye.data.csv.csvBuilder
 import de.markusfisch.android.binaryeye.repository.DatabaseRepository
+import de.markusfisch.android.binaryeye.view.setPadding
 import kotlinx.coroutines.*
 import kotlinx.coroutines.flow.Flow
 import kotlinx.coroutines.flow.collect
@@ -28,6 +31,9 @@ class HistoryFragment : Fragment() {
 	private val parentJob = Job()
 	private val scope = CoroutineScope(Dispatchers.IO + parentJob)
 
+	private var scansAdapter: ScansAdapter? = null
+	private var listViewState: Parcelable? = null
+
 	override fun onCreate(state: Bundle?) {
 		super.onCreate(state)
 		setHasOptionsMenu(true)
@@ -51,7 +57,17 @@ class HistoryFragment : Fragment() {
 		) as SwitchCompat
 		initHistorySwitch(useHistorySwitch)
 
+		val headView = View(context)
+		val footView = View(context)
+		setWindowInsetListener { insets ->
+			(view.findViewById(R.id.inset_layout) as View).setPadding(insets)
+			headView.layoutParams = AbsListView.LayoutParams(0, insets.top)
+			footView.layoutParams = AbsListView.LayoutParams(0, insets.bottom)
+		}
+
 		listView = view.findViewById(R.id.scans)
+		listView.addHeaderView(headView, null, false)
+		listView.addFooterView(footView, null, false)
 		listView.emptyView = useHistorySwitch
 		listView.setOnItemClickListener { _, _, _, id ->
 			showScan(id)
@@ -74,7 +90,7 @@ class HistoryFragment : Fragment() {
 
 	override fun onDestroy() {
 		super.onDestroy()
-		(listView.adapter as ScansAdapter?)?.changeCursor(null)
+		scansAdapter?.changeCursor(null)
 		parentJob.cancel()
 	}
 
@@ -83,6 +99,11 @@ class HistoryFragment : Fragment() {
 		update(context)
 	}
 
+	override fun onPause() {
+		super.onPause()
+		listViewState = listView.onSaveInstanceState()
+	}
+
 	override fun onCreateOptionsMenu(menu: Menu, inflater: MenuInflater) {
 		inflater.inflate(R.menu.fragment_history, menu)
 	}
@@ -120,12 +141,12 @@ class HistoryFragment : Fragment() {
 					View.GONE
 				}
 				cursor?.let {
-					if (listView.adapter == null) {
-						listView.adapter = ScansAdapter(context, cursor)
-					} else {
-						val adapter = listView.adapter as ScansAdapter
-						adapter.changeCursor(cursor)
-						adapter.notifyDataSetChanged()
+					// close previous cursor
+					scansAdapter?.also { it.changeCursor(null) }
+					scansAdapter = ScansAdapter(context, it)
+					listView.adapter = scansAdapter
+					listViewState?.also {
+						listView.onRestoreInstanceState(it)
 					}
 				}
 			}

app/src/main/kotlin/de/markusfisch/android/binaryeye/fragment/PreferencesFragment.kt

@@ -9,6 +9,8 @@ import android.view.ViewGroup
 import android.widget.EditText
 import de.markusfisch.android.binaryeye.R
 import de.markusfisch.android.binaryeye.app.prefs
+import de.markusfisch.android.binaryeye.app.setWindowInsetListener
+import de.markusfisch.android.binaryeye.view.setPadding
 
 class PreferencesFragment : Fragment() {
 	private lateinit var openImmediatelySwitch: SwitchCompat
@@ -28,19 +30,23 @@ class PreferencesFragment : Fragment() {
 			false
 		)
 
-		openImmediatelySwitch = view.findViewById<SwitchCompat>(R.id.open_immediately)
+		openImmediatelySwitch = view.findViewById(R.id.open_immediately)
 		if (prefs.openImmediately) {
 			openImmediatelySwitch.toggle()
 		}
 
-		useHistorySwitch = view.findViewById<SwitchCompat>(R.id.use_history)
+		useHistorySwitch = view.findViewById(R.id.use_history)
 		if (prefs.useHistory) {
 			useHistorySwitch.toggle()
 		}
 
-		openWithUrlInput = view.findViewById<EditText>(R.id.open_with_url)
+		openWithUrlInput = view.findViewById(R.id.open_with_url)
 		openWithUrlInput.setText(prefs.openWithUrl)
 
+		setWindowInsetListener { insets ->
+			(view.findViewById(R.id.scroll_view) as View).setPadding(insets)
+		}
+
 		return view
 	}
 

app/src/main/kotlin/de/markusfisch/android/binaryeye/graphics/BitmapEditor.kt

@@ -1,28 +1,52 @@
 package de.markusfisch.android.binaryeye.graphics
 
+import android.content.ContentResolver
 import android.graphics.Bitmap
+import android.graphics.BitmapFactory
 import android.graphics.Matrix
 import android.graphics.RectF
-import kotlin.math.max
+import android.net.Uri
+import java.io.IOException
 import kotlin.math.roundToInt
 
-fun downsizeIfBigger(bitmap: Bitmap, maxSize: Int): Bitmap = if (
-	max(bitmap.width, bitmap.height) > maxSize
-) {
-	val srcWidth = bitmap.width
-	val srcHeight = bitmap.height
-	var newWidth = maxSize
-	var newHeight = maxSize
-	if (srcWidth > srcHeight) {
-		newHeight = (newWidth.toFloat() / srcWidth.toFloat() *
-				srcHeight.toFloat()).roundToInt()
-	} else {
-		newWidth = (newHeight.toFloat() / srcHeight.toFloat() *
-				srcWidth.toFloat()).roundToInt()
+fun loadImageUri(cr: ContentResolver, uri: Uri): Bitmap? = try {
+	val options = BitmapFactory.Options()
+	cr.openInputStream(uri)?.use {
+		options.inJustDecodeBounds = true
+		BitmapFactory.decodeStream(it, null, options)
+		options.inSampleSize = calculateInSampleSize(
+			options.outWidth,
+			options.outHeight,
+			1024,
+			1024
+		)
+		options.inJustDecodeBounds = false
 	}
-	Bitmap.createScaledBitmap(bitmap, newWidth, newHeight, true)
-} else {
-	bitmap
+	cr.openInputStream(uri)?.use {
+		BitmapFactory.decodeStream(it, null, options)
+	}
+} catch (e: IOException) {
+	null
+}
+
+private fun calculateInSampleSize(
+	width: Int,
+	height: Int,
+	reqWidth: Int,
+	reqHeight: Int
+): Int {
+	var inSampleSize = 1
+	if (height > reqHeight || width > reqWidth) {
+		val halfHeight = height / 2
+		val halfWidth = width / 2
+		while (
+			halfHeight / inSampleSize >= reqHeight ||
+			halfWidth / inSampleSize >= reqWidth
+		) {
+			inSampleSize *= 2
+		}
+	}
+	return inSampleSize
 }
 
 fun crop(bitmap: Bitmap, rect: RectF, rotation: Float) = try {

app/src/main/kotlin/de/markusfisch/android/binaryeye/graphics/Candidates.kt

@@ -0,0 +1,66 @@
+package de.markusfisch.android.binaryeye.graphics
+
+import android.content.Context
+import android.graphics.Canvas
+import android.graphics.Paint
+import android.graphics.Point
+import android.graphics.Rect
+import android.support.v4.content.ContextCompat
+import com.google.zxing.Result
+import com.google.zxing.ResultPoint
+import de.markusfisch.android.binaryeye.R
+import kotlin.math.roundToInt
+
+class Candidates(context: Context) {
+	private val paint = Paint(Paint.ANTI_ALIAS_FLAG)
+	private val radius = 8f * context.resources.displayMetrics.density
+
+	init {
+		paint.color = ContextCompat.getColor(
+			context,
+			R.color.candidate
+		)
+		paint.style = Paint.Style.FILL
+	}
+
+	fun draw(canvas: Canvas, points: List<Point>) {
+		for (point in points) {
+			canvas.drawCircle(
+				point.x.toFloat(),
+				point.y.toFloat(),
+				radius,
+				paint
+			)
+		}
+	}
+}
+
+fun mapResult(
+	width: Int,
+	height: Int,
+	viewRect: Rect,
+	result: Result
+): List<Point> = frameToView(width, height, viewRect).map(result.resultPoints)
+
+fun frameToView(width: Int, height: Int, viewRect: Rect) = Mapping(
+	viewRect.width().toFloat() / width.toFloat(),
+	viewRect.height().toFloat() / height.toFloat(),
+	viewRect.left,
+	viewRect.top
+)
+
+data class Mapping(
+	val ratioX: Float,
+	val ratioY: Float,
+	val offsetX: Int,
+	val offsetY: Int
+) {
+	fun map(points: Array<ResultPoint>): List<Point> {
+		return points.map {
+			Point(
+				(it.x * ratioX).roundToInt() + offsetX,
+				(it.y * ratioY).roundToInt() + offsetY
+			)
+		}
+	}
+}

app/src/main/kotlin/de/markusfisch/android/binaryeye/preference/Preferences.kt

@@ -22,6 +22,11 @@ class Preferences {
 			setString(OPEN_WITH_URL, value)
 			field = value
 		}
+	var indexOfLastSelectedFormat: Int = 0
+		set(value) {
+			setInt(INDEX_OF_LAST_SELECTED_FORMAT, value)
+			field = value
+		}
 
 	fun init(context: Context) {
 		preferences = PreferenceManager.getDefaultSharedPreferences(context)
@@ -29,9 +34,18 @@ class Preferences {
 	}
 
 	fun update() {
-		openImmediately = preferences.getBoolean(OPEN_IMMEDIATELY, openImmediately)
+		openImmediately = preferences.getBoolean(
+			OPEN_IMMEDIATELY,
+			openImmediately
+		)
 		useHistory = preferences.getBoolean(USE_HISTORY, useHistory)
-		preferences.getString(OPEN_WITH_URL, openWithUrl)?.also { openWithUrl = it }
+		indexOfLastSelectedFormat = preferences.getInt(
+			INDEX_OF_LAST_SELECTED_FORMAT,
+			indexOfLastSelectedFormat
+		)
+		preferences.getString(OPEN_WITH_URL, openWithUrl)?.also {
+			openWithUrl = it
+		}
 	}
 
 	private fun setBoolean(label: String, value: Boolean) {
@@ -46,9 +60,16 @@ class Preferences {
 		editor.apply()
 	}
 
+	private fun setInt(label: String, value: Int) {
+		val editor = preferences.edit()
+		editor.putInt(label, value)
+		editor.apply()
+	}
+
 	companion object {
 		const val OPEN_IMMEDIATELY = "open_immediately"
 		const val USE_HISTORY = "use_history"
 		const val OPEN_WITH_URL = "open_with_url"
+		const val INDEX_OF_LAST_SELECTED_FORMAT = "index_of_last_selected_format"
 	}
 }

app/src/main/kotlin/de/markusfisch/android/binaryeye/view/View.kt

@@ -0,0 +1,13 @@
+package de.markusfisch.android.binaryeye.view
+
+import android.graphics.Rect
+import android.view.View
+
+fun View.setPadding(rect: Rect) {
+	this.setPadding(
+		rect.left,
+		rect.top,
+		rect.right,
+		rect.bottom
+	)
+}

app/src/main/kotlin/de/markusfisch/android/binaryeye/widget/ConfinedScalingImageView.kt

@@ -2,11 +2,14 @@ package de.markusfisch.android.binaryeye.widget
 
 import android.content.Context
 import android.graphics.Canvas
+import android.graphics.Rect
 import android.util.AttributeSet
-import de.markusfisch.android.binaryeye.app.setSystemAndToolBarTransparency
+import de.markusfisch.android.binaryeye.app.colorSystemAndToolBars
 import de.markusfisch.android.scalingimageview.widget.ScalingImageView
 
 open class ConfinedScalingImageView : ScalingImageView {
+	val insets = Rect()
+
 	constructor(context: Context, attrs: AttributeSet, defStyle: Int) :
 			super(context, attrs, defStyle)
 
@@ -15,6 +18,24 @@ open class ConfinedScalingImageView : ScalingImageView {
 
 	override fun onDraw(canvas: Canvas) {
 		super.onDraw(canvas)
-		setSystemAndToolBarTransparency(context, !bounds.contains(mappedRect))
+		colorSystemAndToolBars(context, !bounds.contains(mappedRect))
+	}
+
+	override fun layoutImage(
+		changed: Boolean,
+		left: Int,
+		top: Int,
+		right: Int,
+		bottom: Int
+	) {
+		if (changed) {
+			setBounds(
+				(left + insets.left).toFloat(),
+				(top + insets.top).toFloat(),
+				(right - insets.right).toFloat(),
+				(bottom - insets.bottom).toFloat()
+			)
+		}
+		centerRemap()
 	}
 }

app/src/main/kotlin/de/markusfisch/android/binaryeye/widget/ConfinedScrollView.kt

@@ -3,7 +3,7 @@ package de.markusfisch.android.binaryeye.widget
 import android.content.Context
 import android.util.AttributeSet
 import android.widget.ScrollView
-import de.markusfisch.android.binaryeye.app.setSystemAndToolBarTransparency
+import de.markusfisch.android.binaryeye.app.colorSystemAndToolBars
 
 class ConfinedScrollView : ScrollView {
 	private var scrollable = false
@@ -28,9 +28,9 @@ class ConfinedScrollView : ScrollView {
 			post {
 				getChildAt(0)?.also { child ->
 					scrollable = height < child.height + paddingTop + paddingBottom
-					setSystemAndToolBarTransparency(
+					colorSystemAndToolBars(
 						context,
-						false,
+						scrollY > 0,
 						scrollable
 					)
 				}
@@ -40,6 +40,6 @@ class ConfinedScrollView : ScrollView {
 
 	override fun onScrollChanged(x: Int, y: Int, oldx: Int, oldy: Int) {
 		super.onScrollChanged(x, y, oldx, oldy)
-		setSystemAndToolBarTransparency(context, y > 0, scrollable)
+		colorSystemAndToolBars(context, y > 0, scrollable)
 	}
 }

app/src/main/kotlin/de/markusfisch/android/binaryeye/widget/CropImageView.kt

@@ -5,35 +5,34 @@ import android.graphics.*
 import android.support.v4.content.ContextCompat
 import android.util.AttributeSet
 import de.markusfisch.android.binaryeye.R
-import de.markusfisch.android.binaryeye.app.windowInsets
+import de.markusfisch.android.binaryeye.graphics.Candidates
 import kotlin.math.roundToInt
 
 class CropImageView(context: Context, attr: AttributeSet) :
 	ConfinedScalingImageView(context, attr) {
-	var onScan: (() -> Rect)? = null
+	val windowInsets = Rect()
 
+	var onScan: (() -> List<Point>?)? = null
+
+	private val candidates = Candidates(context)
 	private val boundsPaint = Paint(Paint.ANTI_ALIAS_FLAG)
-	private val candidatePaint = Paint(Paint.ANTI_ALIAS_FLAG)
 	private val lastMappedRect = RectF()
 	private val dp = context.resources.displayMetrics.density
 	private val padding: Int = (dp * 24f).roundToInt()
 	private val onScanRunnable = Runnable {
 		onScan?.invoke()?.also {
-			candidateRect = it
+			candidatePoints = it
 			invalidate()
 		}
 	}
 
-	private var candidateRect: Rect? = null
+	private var candidatePoints: List<Point>? = null
 
 	init {
 		boundsPaint.color = ContextCompat.getColor(context, R.color.crop_bound)
 		boundsPaint.style = Paint.Style.STROKE
 		boundsPaint.strokeWidth = dp * 2f
 		boundsPaint.pathEffect = DashPathEffect(floatArrayOf(dp * 10f, dp * 10f), 0f)
-		candidatePaint.color = ContextCompat.getColor(context, R.color.candidate)
-		candidatePaint.style = Paint.Style.FILL_AND_STROKE
-		candidatePaint.strokeWidth = dp * 3f
 		scaleType = ScaleType.CENTER_CROP
 	}
 
@@ -53,9 +52,12 @@ class CropImageView(context: Context, attr: AttributeSet) :
 		)
 	}
 
-	fun getBoundsRect(): RectF {
-		return bounds
-	}
+	fun getBoundsRect() = Rect(
+		bounds.left.roundToInt(),
+		bounds.top.roundToInt(),
+		bounds.right.roundToInt(),
+		bounds.bottom.roundToInt()
+	)
 
 	private fun setBoundsWithPadding(
 		left: Int,
@@ -83,11 +85,10 @@ class CropImageView(context: Context, attr: AttributeSet) :
 	override fun onDraw(canvas: Canvas) {
 		super.onDraw(canvas)
 		canvas.drawRect(bounds, boundsPaint)
-		val rc = candidateRect
-		if (rc != null && rc.width() > 0) {
-			canvas.drawRect(rc, candidatePaint)
-			candidateRect = null
+		candidatePoints?.let {
+			candidates.draw(canvas, it)
 		}
+		candidatePoints = null
 		val mr = mappedRect ?: return
 		if (mr != lastMappedRect) {
 			removeCallbacks(onScanRunnable)

app/src/main/kotlin/de/markusfisch/android/binaryeye/widget/DetectorView.kt

@@ -0,0 +1,36 @@
+package de.markusfisch.android.binaryeye.widget
+
+import android.content.Context
+import android.graphics.Canvas
+import android.graphics.Point
+import android.graphics.PorterDuff
+import android.util.AttributeSet
+import android.view.View
+import de.markusfisch.android.binaryeye.graphics.Candidates
+
+class DetectorView : View {
+	private val candidates = Candidates(context)
+	private var marks: List<Point>? = null
+
+	constructor(context: Context, attrs: AttributeSet) :
+			super(context, attrs)
+
+	constructor(context: Context, attrs: AttributeSet, defStyleAttr: Int) :
+			super(context, attrs, defStyleAttr)
+
+	fun mark(points: List<Point>) {
+		marks = points
+		invalidate()
+		postDelayed({
+			marks = null
+			invalidate()
+		}, 500)
+	}
+
+	override fun onDraw(canvas: Canvas) {
+		canvas.drawColor(0, PorterDuff.Mode.CLEAR)
+		marks?.let {
+			candidates.draw(canvas, it)
+		}
+	}
+}

app/src/main/kotlin/de/markusfisch/android/binaryeye/zxing/Zxing.kt

@@ -6,7 +6,7 @@ import com.google.zxing.common.HybridBinarizer
 import java.util.*
 
 class Zxing {
-	private val multiFormatReader: MultiFormatReader = MultiFormatReader()
+	private val multiFormatReader = MultiFormatReader()
 
 	init {
 		val decodeFormats = EnumSet.noneOf<BarcodeFormat>(
@@ -63,10 +63,11 @@ class Zxing {
 
 	fun decodePositiveNegative(bitmap: Bitmap): Result? {
 		val result = decode(bitmap, false)
-		if (result != null) {
-			return result
+		return if (result != null) {
+			result
+		} else {
+			decode(bitmap, true)
 		}
-		return decode(bitmap, true)
 	}
 
 	fun decode(bitmap: Bitmap, invert: Boolean = false): Result? {
@@ -86,8 +87,10 @@ class Zxing {
 		} else {
 			bitmap
 		}.getPixels(pixels, 0, width, 0, 0, width, height)
-		val source = RGBLuminanceSource(width, height, pixels)
-		return decodeLuminanceSource(source, invert)
+		return decodeLuminanceSource(
+			RGBLuminanceSource(width, height, pixels),
+			invert
+		)
 	}
 
 	private fun decodeLuminanceSource(

app/src/main/res/drawable/ic_action_next.xml

@@ -0,0 +1,5 @@
+<vector android:height="24dp" android:tint="#FFFFFF"
+    android:viewportHeight="24.0" android:viewportWidth="24.0"
+    android:width="24dp" xmlns:android="http://schemas.android.com/apk/res/android">
+    <path android:fillColor="#FF000000" android:pathData="M10,6L8.59,7.41 13.17,12l-4.58,4.59L10,18l6,-6z"/>
+</vector>

app/src/main/res/layout/activity_camera.xml

@@ -1,12 +1,13 @@
-<merge xmlns:android="http://schemas.android.com/apk/res/android"
-	xmlns:app="http://schemas.android.com/apk/res-auto"
-	xmlns:tools="http://schemas.android.com/tools">
+<merge xmlns:android="http://schemas.android.com/apk/res/android">
 	<de.markusfisch.android.cameraview.widget.CameraView
 		android:id="@+id/camera_view"
 		android:layout_width="match_parent"
 		android:layout_height="match_parent"/>
-	<RelativeLayout
-		android:id="@+id/main_layout"
+	<de.markusfisch.android.binaryeye.widget.DetectorView
+		android:id="@+id/detector_view"
+		android:layout_width="match_parent"
+		android:layout_height="match_parent"/>
+	<android.support.design.widget.CoordinatorLayout
 		android:layout_width="match_parent"
 		android:layout_height="match_parent"
 		android:fitsSystemWindows="true">
@@ -15,24 +16,15 @@
 			android:id="@+id/zoom"
 			android:layout_width="match_parent"
 			android:layout_height="wrap_content"
-			android:layout_alignParentEnd="true"
-			android:layout_alignParentRight="true"
-			android:layout_alignParentBottom="true"
+			android:layout_gravity="bottom|start"
 			android:layout_marginBottom="8dp"
 			android:layout_marginRight="80dp"
 			android:layout_marginEnd="80dp"
 			android:padding="16dp"/>
 		<android.support.design.widget.FloatingActionButton
-			tools:ignore="UnusedAttribute"
+			style="@style/FAB"
 			android:id="@+id/flash"
-			android:layout_width="wrap_content"
-			android:layout_height="wrap_content"
-			android:layout_alignParentEnd="true"
-			android:layout_alignParentRight="true"
-			android:layout_alignParentBottom="true"
-			android:layout_margin="20dp"
 			android:contentDescription="@string/toggle_flash"
-			android:src="@drawable/ic_action_flash"
-			app:elevation="4dp"/>
-	</RelativeLayout>
+			android:src="@drawable/ic_action_flash"/>
+	</android.support.design.widget.CoordinatorLayout>
 </merge>

app/src/main/res/layout/activity_main.xml

@@ -1,14 +1,12 @@
 <merge xmlns:android="http://schemas.android.com/apk/res/android">
-	<LinearLayout
-		android:id="@+id/main_layout"
+	<android.support.design.widget.CoordinatorLayout
+		android:id="@+id/content_frame"
+		android:layout_width="match_parent"
+		android:layout_height="match_parent"/>
+	<FrameLayout
 		android:layout_width="match_parent"
 		android:layout_height="match_parent"
-		android:orientation="vertical"
 		android:fitsSystemWindows="true">
 		<include layout="@layout/toolbar"/>
-		<android.support.design.widget.CoordinatorLayout
-			android:id="@+id/content_frame"
-			android:layout_width="match_parent"
-			android:layout_height="match_parent"/>
-	</LinearLayout>
+	</FrameLayout>
 </merge>

app/src/main/res/layout/activity_pick.xml

@@ -1,26 +1,18 @@
-<RelativeLayout
-	xmlns:android="http://schemas.android.com/apk/res/android"
-	xmlns:app="http://schemas.android.com/apk/res-auto"
-	xmlns:tools="http://schemas.android.com/tools"
-	android:layout_width="match_parent"
-	android:layout_height="match_parent"
-	android:fitsSystemWindows="true">
+<merge xmlns:android="http://schemas.android.com/apk/res/android">
 	<de.markusfisch.android.binaryeye.widget.CropImageView
 		android:id="@+id/image"
 		android:layout_width="match_parent"
 		android:layout_height="match_parent"
 		android:contentDescription="@string/view_barcode"/>
-	<include layout="@layout/toolbar"/>
-	<android.support.design.widget.FloatingActionButton
-		tools:ignore="UnusedAttribute"
-		android:id="@+id/scan"
-		android:layout_width="wrap_content"
-		android:layout_height="wrap_content"
-		android:layout_alignParentEnd="true"
-		android:layout_alignParentRight="true"
-		android:layout_alignParentBottom="true"
-		android:layout_margin="20dp"
-		android:contentDescription="@string/scan_code"
-		android:src="@drawable/ic_action_scan"
-		app:elevation="4dp"/>
-</RelativeLayout>
+	<android.support.design.widget.CoordinatorLayout
+		android:layout_width="match_parent"
+		android:layout_height="match_parent"
+		android:fitsSystemWindows="true">
+		<include layout="@layout/toolbar"/>
+		<android.support.design.widget.FloatingActionButton
+			style="@style/FAB"
+			android:id="@+id/scan"
+			android:contentDescription="@string/scan_code"
+			android:src="@drawable/ic_action_scan"/>
+	</android.support.design.widget.CoordinatorLayout>
+</merge>

app/src/main/res/layout/fragment_barcode.xml

@@ -1,7 +1,5 @@
-<RelativeLayout
+<FrameLayout
 	xmlns:android="http://schemas.android.com/apk/res/android"
-	xmlns:app="http://schemas.android.com/apk/res-auto"
-	xmlns:tools="http://schemas.android.com/tools"
 	android:layout_width="match_parent"
 	android:layout_height="match_parent">
 	<de.markusfisch.android.binaryeye.widget.ConfinedScalingImageView
@@ -9,16 +7,14 @@
 		android:layout_width="match_parent"
 		android:layout_height="match_parent"
 		android:contentDescription="@string/view_barcode"/>
-	<android.support.design.widget.FloatingActionButton
-		tools:ignore="UnusedAttribute"
-		android:id="@+id/share"
-		android:layout_width="wrap_content"
-		android:layout_height="wrap_content"
-		android:layout_alignParentEnd="true"
-		android:layout_alignParentRight="true"
-		android:layout_alignParentBottom="true"
-		android:layout_margin="20dp"
-		android:contentDescription="@string/share"
-		android:src="@drawable/ic_action_share"
-		app:elevation="4dp"/>
-</RelativeLayout>
+	<android.support.design.widget.CoordinatorLayout
+		android:id="@+id/inset_layout"
+		android:layout_width="match_parent"
+		android:layout_height="match_parent">
+		<android.support.design.widget.FloatingActionButton
+			style="@style/FAB"
+			android:id="@+id/share"
+			android:contentDescription="@string/share"
+			android:src="@drawable/ic_action_share"/>
+	</android.support.design.widget.CoordinatorLayout>
+</FrameLayout>

app/src/main/res/layout/fragment_decode.xml

@@ -1,21 +1,25 @@
-<RelativeLayout
+<FrameLayout
 	xmlns:android="http://schemas.android.com/apk/res/android"
-	xmlns:app="http://schemas.android.com/apk/res-auto"
 	xmlns:tools="http://schemas.android.com/tools"
 	android:layout_width="match_parent"
 	android:layout_height="match_parent">
 	<de.markusfisch.android.binaryeye.widget.ConfinedScrollView
+		android:id="@+id/scroll_view"
+		android:clipToPadding="false"
 		android:layout_width="match_parent"
 		android:layout_height="match_parent">
 		<RelativeLayout
 			android:layout_width="match_parent"
 			android:layout_height="wrap_content">
-
 			<EditText
 				android:id="@+id/content"
 				android:layout_width="match_parent"
 				android:layout_height="wrap_content"
-				android:layout_margin="16dp"
+				android:layout_marginTop="16dp"
+				android:layout_marginStart="16dp"
+				android:layout_marginLeft="16dp"
+				android:layout_marginEnd="16dp"
+				android:layout_marginRight="16dp"
 				android:gravity="start|top"
 				android:hint="@string/content"
 				android:imeOptions="flagNoExtractUi"
@@ -23,8 +27,8 @@
 				android:inputType="textMultiLine"
 				android:typeface="monospace"
 				tools:ignore="UnusedAttribute"/>
-
 			<TextView
+				style="@style/SecondaryText"
 				android:id="@+id/format"
 				android:layout_width="match_parent"
 				android:layout_height="wrap_content"
@@ -32,8 +36,7 @@
 				android:layout_marginEnd="16dp"
 				android:layout_marginRight="16dp"
 				android:layout_marginBottom="16dp"
-				android:gravity="end|top"
-				android:textSize="14sp" />
+				android:gravity="end|top" />
 			<TextView
 				android:id="@+id/hex"
 				android:layout_width="match_parent"
@@ -47,19 +50,16 @@
 				android:typeface="monospace"
 				android:textSize="12sp"
 				tools:text="54 65 73 74 20 51 52 20  Test QR\n43 6F 64 65              Code"/>
-
 		</RelativeLayout>
 	</de.markusfisch.android.binaryeye.widget.ConfinedScrollView>
-	<android.support.design.widget.FloatingActionButton
-		tools:ignore="UnusedAttribute"
-		android:id="@+id/open"
-		android:layout_width="wrap_content"
-		android:layout_height="wrap_content"
-		android:layout_alignParentEnd="true"
-		android:layout_alignParentRight="true"
-		android:layout_alignParentBottom="true"
-		android:layout_margin="20dp"
-		android:contentDescription="@string/open_url"
-		android:src="@drawable/ic_action_open"
-		app:elevation="4dp"/>
-</RelativeLayout>
+	<android.support.design.widget.CoordinatorLayout
+		android:id="@+id/inset_layout"
+		android:layout_width="match_parent"
+		android:layout_height="match_parent">
+		<android.support.design.widget.FloatingActionButton
+			style="@style/FAB"
+			android:id="@+id/open"
+			android:contentDescription="@string/open_url"
+			android:src="@drawable/ic_action_open"/>
+	</android.support.design.widget.CoordinatorLayout>
+</FrameLayout>

app/src/main/res/layout/fragment_encode.xml

@@ -1,64 +1,74 @@
-<de.markusfisch.android.binaryeye.widget.ConfinedScrollView
+<FrameLayout
 	xmlns:android="http://schemas.android.com/apk/res/android"
-	xmlns:app="http://schemas.android.com/apk/res-auto"
 	xmlns:tools="http://schemas.android.com/tools"
 	android:layout_width="match_parent"
 	android:layout_height="match_parent">
-	<LinearLayout
+	<de.markusfisch.android.binaryeye.widget.ConfinedScrollView
+		android:id="@+id/scroll_view"
+		android:clipToPadding="false"
 		android:layout_width="match_parent"
-		android:layout_height="wrap_content"
-		android:orientation="vertical"
-		android:padding="16dp">
-		<TextView
+		android:layout_height="match_parent">
+		<LinearLayout
 			android:layout_width="match_parent"
 			android:layout_height="wrap_content"
-			android:layout_marginBottom="8dp"
-			android:text="@string/format"/>
-		<Spinner
-			android:id="@+id/format"
-			android:layout_width="match_parent"
-			android:layout_height="wrap_content"
-			android:layout_marginBottom="16dp"/>
-		<TextView
-			android:layout_width="match_parent"
-			android:layout_height="wrap_content"
-			android:layout_marginBottom="8dp"
-			android:text="@string/size"/>
-		<TextView
-			android:id="@+id/size_display"
-			android:layout_width="match_parent"
-			android:layout_height="wrap_content"
-			android:layout_marginBottom="8dp"
-			android:gravity="center"/>
-		<SeekBar
-			style="@style/Widget.AppCompat.SeekBar.Discrete"
-			android:id="@+id/size_bar"
-			android:layout_width="match_parent"
-			android:layout_height="wrap_content"
-			android:layout_marginBottom="16dp"
-			android:progress="4"
-			android:max="7"/>
-		<TextView
-			android:layout_width="match_parent"
-			android:layout_height="wrap_content"
-			android:layout_marginBottom="8dp"
-			android:text="@string/content"/>
-		<EditText
-			tools:targetApi="o"
-			android:id="@+id/content"
-			android:layout_width="match_parent"
-			android:layout_height="wrap_content"
-			android:layout_marginBottom="16dp"
-			android:gravity="start|top"
-			android:typeface="monospace"
-			android:imeOptions="flagNoExtractUi"
-			android:inputType="textMultiLine"
-			android:hint="@string/input_content_here"
-			android:importantForAutofill="no"/>
-		<Button
-			style="@style/Button"
+			android:orientation="vertical"
+			android:padding="16dp">
+			<TextView
+				android:layout_width="match_parent"
+				android:layout_height="wrap_content"
+				android:layout_marginBottom="8dp"
+				android:text="@string/format"/>
+			<Spinner
+				android:id="@+id/format"
+				android:layout_width="match_parent"
+				android:layout_height="wrap_content"
+				android:layout_marginBottom="16dp"/>
+			<TextView
+				android:layout_width="match_parent"
+				android:layout_height="wrap_content"
+				android:layout_marginBottom="8dp"
+				android:text="@string/size"/>
+			<TextView
+				android:id="@+id/size_display"
+				android:layout_width="match_parent"
+				android:layout_height="wrap_content"
+				android:layout_marginBottom="8dp"
+				android:gravity="center"/>
+			<SeekBar
+				style="@style/Widget.AppCompat.SeekBar.Discrete"
+				android:id="@+id/size_bar"
+				android:layout_width="match_parent"
+				android:layout_height="wrap_content"
+				android:layout_marginBottom="16dp"
+				android:progress="4"
+				android:max="7"/>
+			<TextView
+				android:layout_width="match_parent"
+				android:layout_height="wrap_content"
+				android:layout_marginBottom="8dp"
+				android:text="@string/content"/>
+			<EditText
+				tools:targetApi="o"
+				android:id="@+id/content"
+				android:layout_width="match_parent"
+				android:layout_height="wrap_content"
+				android:layout_marginBottom="16dp"
+				android:gravity="start|top"
+				android:typeface="monospace"
+				android:imeOptions="flagNoExtractUi"
+				android:inputType="textMultiLine"
+				android:hint="@string/input_content_here"
+				android:importantForAutofill="no"/>
+		</LinearLayout>
+	</de.markusfisch.android.binaryeye.widget.ConfinedScrollView>
+	<android.support.design.widget.CoordinatorLayout
+		android:id="@+id/inset_layout"
+		android:layout_width="match_parent"
+		android:layout_height="match_parent">
+		<android.support.design.widget.FloatingActionButton
+			style="@style/FAB"
 			android:id="@+id/encode"
-			android:layout_width="match_parent"
-			android:text="@string/encode"/>
-	</LinearLayout>
-</de.markusfisch.android.binaryeye.widget.ConfinedScrollView>
+			android:contentDescription="@string/encode"
+			android:src="@drawable/ic_action_next"/>
+	</android.support.design.widget.CoordinatorLayout>
+</FrameLayout>

app/src/main/res/layout/fragment_history.xml

@@ -1,7 +1,5 @@
-<RelativeLayout
+<FrameLayout
 	xmlns:android="http://schemas.android.com/apk/res/android"
-	xmlns:app="http://schemas.android.com/apk/res-auto"
-	xmlns:tools="http://schemas.android.com/tools"
 	android:layout_width="match_parent"
 	android:layout_height="match_parent">
 	<ListView
@@ -11,26 +9,24 @@
 		android:layout_height="match_parent"
 		android:divider="@color/separator"
 		android:dividerHeight="1px"/>
-	<android.support.v7.widget.SwitchCompat
-		android:visibility="gone"
-		android:id="@+id/use_history"
+	<android.support.design.widget.CoordinatorLayout
+		android:id="@+id/inset_layout"
 		android:layout_width="match_parent"
-		android:layout_height="wrap_content"
-		android:layout_alignParentTop="true"
-		android:padding="16dp"
-		android:text="@string/use_history"/>
-	<android.support.design.widget.FloatingActionButton
-		tools:ignore="UnusedAttribute"
-		android:visibility="gone"
-		android:id="@+id/share"
-		android:layout_width="wrap_content"
-		android:layout_height="wrap_content"
-		android:layout_alignParentEnd="true"
-		android:layout_alignParentRight="true"
-		android:layout_alignParentBottom="true"
-		android:layout_margin="20dp"
-		android:contentDescription="@string/share"
-		android:src="@drawable/ic_action_share"
-		app:elevation="4dp"/>
+		android:layout_height="match_parent">
+		<android.support.v7.widget.SwitchCompat
+			android:visibility="gone"
+			android:id="@+id/use_history"
+			android:layout_width="match_parent"
+			android:layout_height="wrap_content"
+			android:layout_alignParentTop="true"
+			android:padding="16dp"
+			android:text="@string/use_history"/>
+		<android.support.design.widget.FloatingActionButton
+			style="@style/FAB"
+			android:visibility="gone"
+			android:id="@+id/share"
+			android:contentDescription="@string/share"
+			android:src="@drawable/ic_action_share"/>
+	</android.support.design.widget.CoordinatorLayout>
 	<include layout="@layout/progress_view"/>
-</RelativeLayout>
+</FrameLayout>

app/src/main/res/layout/fragment_preferences.xml

@@ -1,6 +1,8 @@
 <de.markusfisch.android.binaryeye.widget.ConfinedScrollView
 	xmlns:android="http://schemas.android.com/apk/res/android"
 	xmlns:tools="http://schemas.android.com/tools"
+	android:id="@+id/scroll_view"
+	android:clipToPadding="false"
 	android:layout_width="match_parent"
 	android:layout_height="match_parent">
 	<LinearLayout

app/src/main/res/layout/row_scan.xml

@@ -4,6 +4,7 @@
 	android:layout_height="match_parent"
 	android:padding="16dp">
 	<TextView
+		style="@style/SecondaryText"
 		android:id="@+id/time"
 		android:layout_width="wrap_content"
 		android:layout_height="wrap_content"
@@ -11,6 +12,7 @@
 		android:layout_alignParentStart="true"
 		android:layout_alignParentTop="true"/>
 	<TextView
+		style="@style/SecondaryText"
 		android:id="@+id/format"
 		android:layout_width="wrap_content"
 		android:layout_height="wrap_content"
@@ -26,5 +28,7 @@
 		android:layout_height="wrap_content"
 		android:layout_below="@+id/time"
 		android:layout_marginTop="4dp"
+		android:textAppearance="?android:attr/textAppearanceMedium"
+		android:textColor="?android:attr/textColorPrimary"
 		android:typeface="monospace"/>
 </RelativeLayout>

app/src/main/res/menu/fragment_encode.xml

@@ -0,0 +1,9 @@
+<menu
+	xmlns:android="http://schemas.android.com/apk/res/android"
+	xmlns:material="http://schemas.android.com/apk/res-auto">
+	<item
+		android:id="@+id/next"
+		android:title="@string/encode"
+		android:icon="@drawable/ic_action_next"
+		material:showAsAction="ifRoom"/>
+</menu>

app/src/main/res/values-de/strings.xml

@@ -7,8 +7,8 @@
 	<string name="content">Inhalt</string>
 	<string name="binary_data">(Binäre Daten)</string>
 	<plurals name="barcode_info">
-		<item quantity="one">%1$s\n%2$d Zeichen</item>
-		<item quantity="other">%1$s\n%2$d Zeichen</item>
+		<item quantity="one">%2$d Zeichen, %1$s</item>
+		<item quantity="other">%2$d Zeichen, %1$s</item>
 	</plurals>
 	<string name="toggle_flash">Licht an/ausschalten</string>
 	<string name="share">Teilen</string>

app/src/main/res/values-fr/strings.xml

@@ -7,8 +7,8 @@
 	<string name="content">Contenu</string>
 	<string name="binary_data">(binary data)</string>
 	<plurals name="barcode_info">
-		<item quantity="one">%1$s\n%2$d character</item>
-		<item quantity="other">%1$s\n%2$d characters</item>
+		<item quantity="one">%2$d characters, %1$s</item>
+		<item quantity="other">%2$d characters, %1$s</item>
 	</plurals>
 	<string name="toggle_flash">Toggle flash</string>
 	<string name="share">Share</string>

app/src/main/res/values-hu/strings.xml

@@ -7,8 +7,8 @@
 	<string name="content">Tartalom</string>
 	<string name="binary_data">(bináris adat)</string>
 	<plurals name="barcode_info">
-		<item quantity="one">%1$s\n%2$d karakter</item>
-		<item quantity="other">%1$s\n%2$d karakter</item>
+		<item quantity="one">%2$d karakter, %1$s</item>
+		<item quantity="other">%2$d karakter, %1$s</item>
 	</plurals>
 	<string name="toggle_flash">Vaku be- vagy kikapcsolása</string>
 	<string name="share">Megosztás</string>
@@ -29,7 +29,7 @@
 	<string name="switch_camera">Kamera átkapcsolása</string>
 	<string name="history">Előzmények</string>
 	<string name="preferences">Beállítások</string>
-	<string name="open_immediately">Skip inspection and open contents immediately</string>
+	<string name="open_immediately">Vizsgálat kihagyása és a tartalom azonnali megnyitása</string>
 	<string name="use_history">Beolvasási előzmények mentése</string>
 	<string name="open_with_url">Ismeretlen adat megnyitása URL-lel</string>
 	<string name="really_remove_scan">Valóban eltávolítja a beolvasást?</string>
@@ -67,7 +67,7 @@
 	<string name="no">Nem</string>
 	<string name="csv_allow_binary_message">Valószínűleg ezt nem szeretné engedélyezni, mivel tönkre fogja tenni a fájlformátumot, és a szövegszerkesztők talán nem fogják tudni többé olvasni.</string>
 	<string name="saved_in_downloads">Elmentve a letöltésekbe</string>
-	<string name="rotate_image_cw">Rotate image clockwise</string>
-	<string name="pick_file">Pick image file</string>
-	<string name="pick_code_to_scan">Pick code to scan</string>
+	<string name="rotate_image_cw">Kép forgatása jobbra</string>
+	<string name="pick_file">Képfájl kiválasztása</string>
+	<string name="pick_code_to_scan">Kód kiválasztása a beolvasáshoz</string>
 </resources>

app/src/main/res/values-in/strings.xml

@@ -5,10 +5,10 @@
 	<string name="compose_barcode">Buat barcode</string>
 	<string name="decode_barcode">Dekode barcode</string>
 	<string name="content">Konten</string>
-	<string name="binary_data">(data binari)</string>
+	<string name="binary_data">(data biner)</string>
 	<plurals name="barcode_info">
-		<item quantity="one">%1$s\n%2$d karakter</item>
-		<item quantity="other">%1$s\n%2$d karakter</item>
+		<item quantity="one">%1$s, %2$d karakter</item>
+		<item quantity="other">%1$s, %2$d karakter</item>
 	</plurals>
 	<string name="toggle_flash">Nyala/Matikan blitz</string>
 	<string name="share">Bagikan</string>
@@ -29,7 +29,7 @@
 	<string name="switch_camera">Ganti kamera</string>
 	<string name="history">Riwayat</string>
 	<string name="preferences">Preferensi</string>
-	<string name="open_immediately">Skip inspection and open contents immediately</string>
+	<string name="open_immediately">Lewati inspeksi dan segera buka konten</string>
 	<string name="use_history">Simpan riwayat pemindaian</string>
 	<string name="open_with_url">Buka data tak dikenal dengan URL</string>
 	<string name="really_remove_scan">Yakin menghapus pemindaian?</string>
@@ -63,11 +63,11 @@
 	<string name="csv_delimiter">Karakter pemisah apa yang harus digunakan (Berkas-CSV)?</string>
 	<string name="delimiter_comma">Koma</string>
 	<string name="delimiter_semicolon">Titik koma</string>
-	<string name="csv_allow_binary">Izinkan data binari di dalam berkas keluaran?</string>
+	<string name="csv_allow_binary">Izinkan data biner di dalam berkas keluaran?</string>
 	<string name="no">Tidak</string>
 	<string name="csv_allow_binary_message">Anda sebaiknya tidak mengizinkannya, karena akan merusak format berkas dan kemungkinan tidak bisa lagi dibaca oleh aplikasi penyunting teks.</string>
 	<string name="saved_in_downloads">Simpan di dalam unduhan</string>
-	<string name="rotate_image_cw">Rotate image clockwise</string>
-	<string name="pick_file">Pick image file</string>
-	<string name="pick_code_to_scan">Pick code to scan</string>
+	<string name="rotate_image_cw">Putar gambar searah jarum jam</string>
+	<string name="pick_file">Pilih berkas gambar</string>
+	<string name="pick_code_to_scan">Pilih kode untuk dipindai</string>
 </resources>

app/src/main/res/values-it/strings.xml

@@ -1,14 +1,14 @@
 <resources>
-	<string name="no_camera_no_fun">Quest\'app non ha alcuna utilità senza accesso alla camera. Addio.</string>
-	<string name="camera_error">Impossibile accedere alla camera. Riprovare</string>
-	<string name="scan_code">Codice</string>
+	<string name="no_camera_no_fun">Quest\'app non ha alcun senso senza l\'accesso alla fotocamera. Ciao.</string>
+	<string name="camera_error">Impossibile accedere alla fotocamera, riprova</string>
+	<string name="scan_code">Scansiona codice</string>
 	<string name="compose_barcode">Crea codice a barre</string>
 	<string name="decode_barcode">Decodifica codice a barre</string>
 	<string name="content">Contenuto</string>
 	<string name="binary_data">(dati binari)</string>
 	<plurals name="barcode_info">
-		<item quantity="one">%1$s\n%2$d carattere</item>
-		<item quantity="other">%1$s\n%2$d caratteri</item>
+		<item quantity="one">%2$d carattere, %1$s</item>
+		<item quantity="other">%2$d caratteri, %1$s</item>
 	</plurals>
 	<string name="toggle_flash">Flash</string>
 	<string name="share">Condividi</string>
@@ -20,44 +20,44 @@
 	<string name="format">Formato</string>
 	<string name="size">Dimensioni in pixel</string>
 	<string name="width_by_height">%1$d×%2$d</string>
-	<string name="input_content_here">Contenuto input qui</string>
+	<string name="input_content_here">Inserisci il contenuto qui</string>
 	<string name="encode">CODIFICA</string>
 	<string name="error_no_content">Contenuto mancante</string>
 	<string name="error_encoding_barcode">Il codice a barre non può essere generato</string>
 	<string name="view_barcode">Vedi codice a barre</string>
 	<string name="info">Info</string>
-	<string name="switch_camera">Cambia camera</string>
+	<string name="switch_camera">Cambia fotocamera</string>
 	<string name="history">Cronologia</string>
-	<string name="preferences">Preferences</string>
-	<string name="open_immediately">Skip inspection and open contents immediately</string>
+	<string name="preferences">Preferenze</string>
+	<string name="open_immediately">Salta l\'analisi e apri i contenuti direttamente</string>
 	<string name="use_history">Salva cronologia delle scansioni</string>
 	<string name="open_with_url">Apri dati sconosciuti con URL</string>
 	<string name="really_remove_scan">Vuoi veramente rimuovere la scansione?</string>
 	<string name="really_remove_all_scans">Vuoi veramente rimuovere tutte le scansioni?</string>
 	<string name="clear_history">Pulisci cronologia</string>
 	<string name="no_barcode_found">Nessun codice a barre trovato</string>
-	<string name="pick_list_separator">Come separare elementi di una lista?</string>
+	<string name="pick_list_separator">Come separare elementi della lista?</string>
 	<string name="separator_line_break">Interruzione di linea</string>
 	<string name="separator_ruler">Righello</string>
 	<string name="save_as_file_name">Salvare come file?</string>
 	<string name="file_name">Nome del file</string>
 	<string name="error_saving_binary_data">Impossibile salvare il file</string>
-	<string name="error_file_exists">Il File esiste già</string>
-	<string name="connect_to_wifi">Connecti al WiFi</string>
+	<string name="error_file_exists">Il file esiste già</string>
+	<string name="connect_to_wifi">Connetti al WiFi</string>
 	<string name="wifi_config_failed">Impossibile configurare il WiFi</string>
 	<string name="wifi_added">WiFi aggiunto</string>
 	<string name="sms_send">Invia SMS</string>
 	<string name="sms_error">Impossibile inviare SMS</string>
 	<string name="tel_dial">Componi numero</string>
 	<string name="tel_error">Impossibile comporre il numero</string>
-	<string name="mail_send">Invia mail</string>
-	<string name="mail_error">Impossibile inviare la mail</string>
+	<string name="mail_send">Invia email</string>
+	<string name="mail_error">Impossibile inviare l\'email</string>
 	<string name="vcard_add">Aggiungi ai contatti</string>
 	<string name="vcard_failed">Impossibile aggiungere ai contatti</string>
 	<string name="vevent_add">Aggiungi al calendario</string>
 	<string name="vevent_failed">Impossibile aggiungere al calendario</string>
 	<string name="otpauth_add">Aggiungi 2FA</string>
-	<string name="otpauth_error">Impossibile aggiungre il 2FA</string>
+	<string name="otpauth_error">Impossibile aggiungre la 2FA</string>
 	<string name="search_web">Cerca nel web</string>
 	<string name="export_to_file">Esporta su file</string>
 	<string name="csv_delimiter">Quale delimitatore usare (File-CSV)?</string>
@@ -65,9 +65,9 @@
 	<string name="delimiter_semicolon">Punto e virgola</string>
 	<string name="csv_allow_binary">Permetti dati binari nel file di output?</string>
 	<string name="no">No</string>
-	<string name="csv_allow_binary_message">È consigliato non permetterlo, perché rompe il formato del file e probabilmente lo renderà non più leggibile dagli editor di testo.</string>
+	<string name="csv_allow_binary_message">È consigliato non permetterlo, perché rovina il formato del file e probabilmente lo renderà non più leggibile dagli editor di testo.</string>
 	<string name="saved_in_downloads">Salvato nei download</string>
-	<string name="rotate_image_cw">Rotate image clockwise</string>
-	<string name="pick_file">Pick image file</string>
-	<string name="pick_code_to_scan">Pick code to scan</string>
+	<string name="rotate_image_cw">Ruota immagine in senso orario</string>
+	<string name="pick_file">Scegli file immagine</string>
+	<string name="pick_code_to_scan">Scegli codice da scansionare</string>
 </resources>

app/src/main/res/values-nl/strings.xml

@@ -7,8 +7,8 @@
 	<string name="content">Inhoud</string>
 	<string name="binary_data">(binaire data)</string>
 	<plurals name="barcode_info">
-		<item quantity="one">%1$s\n%2$d character</item>
-		<item quantity="other">%1$s\n%2$d characters</item>
+		<item quantity="one">%2$d character, %1$s</item>
+		<item quantity="other">%2$d characters, %1$s</item>
 	</plurals>
 	<string name="toggle_flash">Flitslicht schakelen</string>
 	<string name="share">Delen</string>

app/src/main/res/values-pt-rBR/strings.xml

@@ -7,8 +7,8 @@
 	<string name="content">Conteúdo</string>
 	<string name="binary_data">(binários)</string>
 	<plurals name="barcode_info">
-		<item quantity="one">%1$s\n%2$d cacractere</item>
-		<item quantity="other">%1$s\n%2$d caracteres</item>
+		<item quantity="one">%2$d caractere, %1$s</item>
+		<item quantity="other">%2$d caracteres, %1$s</item>
 	</plurals>
 	<string name="toggle_flash">Ativar lanterna</string>
 	<string name="share">Compartilhar</string>

app/src/main/res/values-zh-rCN/strings.xml

@@ -1,21 +1,21 @@
 <resources>
-	<string name="no_camera_no_fun">没有相机权限，这个软件有啥意义。再见!</string>
+	<string name="no_camera_no_fun">没有给我相机权限，扫个锤子。再见!</string>
 	<string name="camera_error">无法访问相机，请重试。</string>
-	<string name="scan_code">Scan code</string>
+	<string name="scan_code">扫描</string>
 	<string name="compose_barcode">制作条形码</string>
 	<string name="decode_barcode">解码条形码</string>
 	<string name="content">内容</string>
 	<string name="binary_data">(二进制数据)</string>
 	<plurals name="barcode_info">
-		<item quantity="one">%1$s\n%2$d 字符</item>
-		<item quantity="other">%1$s\n%2$d 字符</item>
+		<item quantity="one">%2$d 字符, %1$s</item>
+		<item quantity="other">%2$d 字符, %1$s</item>
 	</plurals>
-	<string name="toggle_flash">切换闪光灯</string>
+	<string name="toggle_flash">开关闪光灯</string>
 	<string name="share">分享</string>
 	<string name="copy_to_clipboard">复制到剪切板</string>
 	<string name="put_into_clipboard">复制到剪切板</string>
 	<string name="open_url">打开链接</string>
-	<string name="cannot_resolve_action">没有应用程序可以打开它</string>
+	<string name="cannot_resolve_action">没有相关APP可以打开它</string>
 	<string name="pick_search_engine">选择一个搜索引擎</string>
 	<string name="format">编码格式</string>
 	<string name="size">图片尺寸</string>
@@ -29,7 +29,7 @@
 	<string name="switch_camera">切换摄像头</string>
 	<string name="history">历史</string>
 	<string name="preferences">首选项</string>
-	<string name="open_immediately">Skip inspection and open contents immediately</string>
+	<string name="open_immediately">跳过内容展示并立即打开</string>
 	<string name="use_history">保存扫描历史</string>
 	<string name="open_with_url">使用URL打开未知数据</string>
 	<string name="really_remove_scan">确定删除记录?</string>
@@ -56,18 +56,18 @@
 	<string name="vcard_failed">无法添加到通讯录</string>
 	<string name="vevent_add">添加到日历</string>
 	<string name="vevent_failed">无法添加到日历</string>
-	<string name="otpauth_add">Add 2FA</string>
-	<string name="otpauth_error">Could not add 2FA</string>
-	<string name="search_web">Search the web</string>
-	<string name="export_to_file">Export to file</string>
-	<string name="csv_delimiter">Which delimiter should be used (CSV-File)?</string>
-	<string name="delimiter_comma">Comma</string>
-	<string name="delimiter_semicolon">Semicolon</string>
-	<string name="csv_allow_binary">Allow binary data in output file?</string>
-	<string name="no">No</string>
-	<string name="csv_allow_binary_message">You probably don\'t want to allow that, as it will break the file format and maybe isn\'t readable by text editors anymore.</string>
-	<string name="saved_in_downloads">Saved in downloads</string>
-	<string name="rotate_image_cw">Rotate image clockwise</string>
-	<string name="pick_file">Pick image file</string>
-	<string name="pick_code_to_scan">Pick code to scan</string>
+	<string name="otpauth_add">添加两步验证</string>
+	<string name="otpauth_error">无法添加两步验证</string>
+	<string name="search_web">在互联网中搜索</string>
+	<string name="export_to_file">导出为CSV文件</string>
+	<string name="csv_delimiter">使用哪个分隔符 (CSV-文件)?</string>
+	<string name="delimiter_comma">逗号</string>
+	<string name="delimiter_semicolon">分号</string>
+	<string name="csv_allow_binary">允许输出文件中的二进制数据？</string>
+	<string name="no">否</string>
+	<string name="csv_allow_binary_message">您可能不想这样做，因为它会破坏文件格式，并且可能无法再由文本编辑器读取。</string>
+	<string name="saved_in_downloads">已保存到下载目录</string>
+	<string name="rotate_image_cw">旋转图片</string>
+	<string name="pick_file">选择图片文件</string>
+	<string name="pick_code_to_scan">选择扫描的编码</string>
 </resources>

app/src/main/res/values-zh/strings.xml

@@ -7,8 +7,8 @@
 	<string name="content">内容</string>
 	<string name="binary_data">(2進制碼)</string>
 	<plurals name="barcode_info">
-		<item quantity="one">%1$s\n%2$d 個字符</item>
-		<item quantity="other">%1$s\n%2$d 個字符</item>
+		<item quantity="one">%2$d 個字符, %1$s</item>
+		<item quantity="other">%2$d 個字符, %1$s</item>
 	</plurals>
 	<string name="toggle_flash">閃光燈</string>
 	<string name="share">分享</string>

app/src/main/res/values/colors.xml

@@ -1,6 +1,5 @@
 <resources>
 	<color name="primary">#222</color>
-	<color name="primary_dark">#111</color>
 	<color name="accent">#b6d46f</color>
 	<color name="accent_dark">#a6c45f</color>
 	<color name="background_color">#111</color>

app/src/main/res/values/search_engines.xml

@@ -3,6 +3,8 @@
 		<item>Google</item>
 		<item>DuckDuckGo</item>
 		<item>Qwant</item>
+		<item>Bing</item>
+		<item>Yandex</item>
 		<item>OpenFoodFacts.org</item>
 		<item>OpenBeautyFacts.org</item>
 		<item>OpenPetFoodFacts.org</item>
@@ -11,6 +13,8 @@
 		<item>https://www.google.com/search?q=</item>
 		<item>https://duckduckgo.com/?q=</item>
 		<item>https://www.qwant.com/?q=</item>
+		<item>https://bing.com/?q=</item>
+		<item>https://yandex.com/?q=</item>
 		<item>https://world.openfoodfacts.org/cgi/search.pl?search_terms=</item>
 		<item>https://world.openbeautyfacts.org/cgi/search.pl?search_terms=</item>
 		<item>https://world.openpetfoodfacts.org/cgi/search.pl?search_terms=</item>

app/src/main/res/values/strings.xml

@@ -7,8 +7,8 @@
 	<string name="content">Content</string>
 	<string name="binary_data">(binary data)</string>
 	<plurals name="barcode_info">
-		<item quantity="one">%1$s\n%2$d character</item>
-		<item quantity="other">%1$s\n%2$d characters</item>
+		<item quantity="one">%2$d character, %1$s</item>
+		<item quantity="other">%2$d characters, %1$s</item>
 	</plurals>
 	<string name="toggle_flash">Toggle flash</string>
 	<string name="share">Share</string>

app/src/main/res/values/styles.xml

@@ -1,13 +1,19 @@
 <resources>
 	<style name="AppTheme" parent="Theme.AppCompat.NoActionBar">
 		<item name="colorPrimary">@color/primary</item>
-		<item name="colorPrimaryDark">@color/primary_dark</item>
+		<item name="colorPrimaryDark">@android:color/transparent</item>
 		<item name="colorAccent">@color/accent</item>
 		<item name="android:windowBackground">@drawable/background_window</item>
 	</style>
 	<style name="SplashTheme" parent="@style/AppTheme">
 		<item name="android:windowBackground">@drawable/background_splash</item>
 	</style>
+	<style
+		name="SecondaryText"
+		parent="@android:style/Widget.TextView">
+		<item name="android:textSize">12sp</item>
+		<item name="android:textColor">?android:attr/textColorSecondary</item>
+	</style>
 	<style
 		name="Button"
 		parent="@android:style/Widget.Button">
@@ -21,4 +27,13 @@
 		<item name="android:paddingRight">@dimen/button_padding</item>
 		<item name="android:maxLines">1</item>
 	</style>
+	<style
+		name="FAB"
+		parent="Widget.Design.FloatingActionButton">
+		<item name="android:layout_width">wrap_content</item>
+		<item name="android:layout_height">wrap_content</item>
+		<item name="android:layout_margin">20dp</item>
+		<item name="android:layout_gravity">bottom|end</item>
+		<item name="elevation">4dp</item>
+	</style>
 </resources>

app/src/main/res/xml/backup_rules.xml

@@ -0,0 +1,3 @@
+<full-backup-content>
+	<include domain="root" path="."/>
+</full-backup-content>

app/src/test/kotlin/de/markusfisch/android/binaryeye/TestUtils.kt

@@ -7,7 +7,10 @@ fun simpleFail(message: String = "Unknown reason, but failed"): Nothing {
 	throw IllegalStateException("You should never have reached this point in the code, but anyways: $message")
 }
 
-inline fun <reified E : Throwable> assertThrows(message: String = "Unknown reason, but didn't failed even though should fail", block: () -> Unit) {
+inline fun <reified E : Throwable> assertThrows(
+	message: String = "Unknown reason, but didn't failed even though should fail",
+	block: () -> Unit
+) {
 	try {
 		block()
 		fail(message)

app/src/test/kotlin/de/markusfisch/android/binaryeye/actions/wifi/WifiConfigurationFactoryTest.kt

@@ -1,10 +1,7 @@
 package de.markusfisch.android.binaryeye.actions.wifi
 
 import de.markusfisch.android.binaryeye.simpleFail
-import junit.framework.TestCase.assertEquals
-import junit.framework.TestCase.assertFalse
-import junit.framework.TestCase.assertNull
-import junit.framework.TestCase.assertTrue
+import junit.framework.TestCase.*
 import org.junit.Test
 
 class WifiConfigurationFactoryTest {
@@ -86,8 +83,8 @@ class WifiConfigurationFactoryTest {
 
 	private fun simpleDataAccessor(wifiString: String): WifiConfigurationFactory.SimpleDataAccessor {
 		val map = WifiConfigurationFactory.parseMap(wifiString)
-				?: simpleFail("parsing map of valid string fails ($wifiString)")
+			?: simpleFail("parsing map of valid string fails ($wifiString)")
 		return WifiConfigurationFactory.SimpleDataAccessor.of(map)
-				?: simpleFail("could not create SimpleDataAccessor of (potentially) valid map ($map of $wifiString)")
+			?: simpleFail("could not create SimpleDataAccessor of (potentially) valid map ($map of $wifiString)")
 	}
 }

build.gradle

@@ -1,9 +1,26 @@
 buildscript {
-	ext.kotlin_version = '1.3.50'
-	ext.tools_version = '3.5.2'
-	ext.build_tools_version = '28.0.3'
-	ext.sdk_version = 28
-	ext.support_version = '25.3.1'
+	// Since RenderScript can no longer be compiled on macOS Catalina
+	// because Catalina cannot run 32bit binaries and Google failed
+	// to provide a 64bit compiler in time. Now, as if that wasn't
+	// bad enough, the new build tools that provide a 64bit compiler
+	// don't work on any other system than macOS unfortunately.
+	ext.is_catalina = {
+		if (System.properties['os.name'] == 'Mac OS X') {
+			def numbers = System.properties['os.version'].split('\\.')
+			if (numbers.length > 1) {
+				return numbers[1].toInteger() >= 15
+			}
+		}
+		return false
+	}()
+
+	ext {
+		kotlin_version = '1.3.61'
+		tools_version = '3.6.1'
+		build_tools_version = ext.is_catalina ? '29.0.3' : '28.0.3'
+		sdk_version = 29
+		support_version = '25.3.1'
+	}
 
 	repositories {
 		google()

gradle/wrapper/gradle-wrapper.properties

@@ -3,4 +3,4 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-5.6.1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-5.6.4-all.zip