Switching to CameraX

app/build.gradle

@@ -47,7 +47,7 @@ dependencies {
     implementation "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
     implementation "androidx.core:core-ktx:1.3.2"
     implementation "androidx.appcompat:appcompat:1.2.0"
-    implementation "androidx.constraintlayout:constraintlayout:2.0.3"
+    implementation "androidx.constraintlayout:constraintlayout:2.0.4"
 
     implementation "androidx.sqlite:sqlite-ktx:2.1.0"
     implementation "androidx.preference:preference-ktx:1.1.1"
@@ -56,6 +56,12 @@ dependencies {
     implementation "com.github.bumptech.glide:glide:4.11.0"
     implementation "com.google.android.exoplayer:exoplayer-core:2.11.7"
     implementation "com.google.android.exoplayer:exoplayer-ui:2.11.7"
-    implementation "com.otaliastudios:cameraview:2.6.4"
     implementation "androidx.biometric:biometric:1.0.1"
+
+    def camerax_version = "1.0.0-rc01"
+    implementation "androidx.camera:camera-camera2:$camerax_version"
+    implementation "androidx.camera:camera-lifecycle:$camerax_version"
+    implementation "androidx.camera:camera-view:1.0.0-alpha20"
+    implementation "androidx.camera:camera-extensions:1.0.0-alpha20"
+
 }

app/proguard-rules.pro

@@ -25,4 +25,3 @@
     *;
 }
 -keep class sushi.hardcore.droidfs.explorers.ExplorerElement
--keep class com.otaliastudios.cameraview.markers.DefaultAutoFocusMarker

app/src/main/AndroidManifest.xml

@@ -10,6 +10,7 @@
 
     <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
     <uses-permission android:name="android.permission.USE_BIOMETRIC" />
+    <uses-permission android:name="android.permission.CAMERA" />
 
     <uses-feature
         android:name="android.hardware.camera.any"

app/src/main/java/sushi/hardcore/droidfs/CameraActivity.kt

@@ -3,8 +3,15 @@ package sushi.hardcore.droidfs
 import android.Manifest
 import android.content.Context
 import android.content.pm.PackageManager
+import android.hardware.camera2.CameraCharacteristics
+import android.hardware.camera2.CameraManager
+import android.os.Build
 import android.os.Bundle
 import android.text.InputType
+import android.util.DisplayMetrics
+import android.util.Size
+import android.view.MotionEvent
+import android.view.ScaleGestureDetector
 import android.view.View
 import android.view.WindowManager
 import android.view.animation.Animation
@@ -12,35 +19,34 @@ import android.view.animation.LinearInterpolator
 import android.view.animation.RotateAnimation
 import android.widget.EditText
 import android.widget.ImageView
+import android.widget.RelativeLayout
 import android.widget.Toast
+import androidx.camera.camera2.interop.Camera2CameraInfo
+import androidx.camera.core.*
+import androidx.camera.extensions.HdrImageCaptureExtender
+import androidx.camera.lifecycle.ProcessCameraProvider
 import androidx.core.content.ContextCompat
-import com.otaliastudios.cameraview.CameraListener
-import com.otaliastudios.cameraview.PictureResult
-import com.otaliastudios.cameraview.controls.Facing
-import com.otaliastudios.cameraview.controls.Flash
-import com.otaliastudios.cameraview.controls.Grid
-import com.otaliastudios.cameraview.controls.Hdr
 import kotlinx.android.synthetic.main.activity_camera.*
+import sushi.hardcore.droidfs.adapters.DialogSingleChoiceAdapter
 import sushi.hardcore.droidfs.provider.RestrictedFileProvider
 import sushi.hardcore.droidfs.util.GocryptfsVolume
-import sushi.hardcore.droidfs.util.MiscUtils
 import sushi.hardcore.droidfs.util.PathUtils
 import sushi.hardcore.droidfs.widgets.ColoredAlertDialogBuilder
 import java.io.ByteArrayInputStream
+import java.io.ByteArrayOutputStream
 import java.text.SimpleDateFormat
 import java.util.*
+import java.util.concurrent.ExecutorService
+import java.util.concurrent.Executors
 
 class CameraActivity : BaseActivity(), SensorOrientationListener.Listener {
     companion object {
-        private val flashModes = listOf(Flash.AUTO, Flash.ON, Flash.OFF)
+        private const val CAMERA_PERMISSION_REQUEST_CODE = 1
-        private val gridTitles = listOf(R.string.grid_none, R.string.grid_3x3, R.string.grid_4x4)
-        private val gridValues = listOf(Grid.OFF, Grid.DRAW_3X3, Grid.DRAW_4X4)
         private const val fileNameRandomMin = 100000
         private const val fileNameRandomMax = 999999
         private val dateFormat = SimpleDateFormat("yyyyMMdd_HHmmss")
         private val random = Random()
     }
-    private var currentFlashModeIndex = 0
     private var timerDuration = 0
         set(value) {
             field = value
@@ -57,22 +63,140 @@ class CameraActivity : BaseActivity(), SensorOrientationListener.Listener {
     private lateinit var outputDirectory: String
     private lateinit var fileName: String
     private var isFinishingIntentionally = false
-    private lateinit var context: Context
+    private lateinit var cameraExecutor: ExecutorService
+    private var imageCapture: ImageCapture? = null
+    private var resolutions: Array<Size>? = null
+    private var currentResolutionIndex: Int = 0
+    private var isBackCamera = true
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         setContentView(R.layout.activity_camera)
         gocryptfsVolume = GocryptfsVolume(intent.getIntExtra("sessionID", -1))
         outputDirectory = intent.getStringExtra("path")!!
-        context = this
+
-        camera.setLifecycleOwner(this)
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
-        camera.addCameraListener(object: CameraListener(){
+            if (ContextCompat.checkSelfPermission(this, Manifest.permission.CAMERA) == PackageManager.PERMISSION_GRANTED){
-            override fun onPictureTaken(result: PictureResult) {
+                setupCamera()
-                take_photo_button.onPhotoTaken()
-                val inputStream = ByteArrayInputStream(result.data)
-                if (gocryptfsVolume.importFile(inputStream, PathUtils.pathJoin(outputDirectory, fileName))){
-                    Toast.makeText(context, getString(R.string.picture_save_success, fileName), Toast.LENGTH_SHORT).show()
             } else {
-                    ColoredAlertDialogBuilder(context)
+                requestPermissions(arrayOf(Manifest.permission.CAMERA), CAMERA_PERMISSION_REQUEST_CODE)
+            }
+        } else {
+            setupCamera()
+        }
+
+        cameraExecutor = Executors.newSingleThreadExecutor()
+
+        take_photo_button.onClick = ::onClickTakePhoto
+        orientedIcons = listOf(image_ratio, image_timer, image_close, image_flash, image_camera_switch)
+        sensorOrientationListener = SensorOrientationListener(this)
+
+        val scaleGestureDetector = ScaleGestureDetector(this, object : ScaleGestureDetector.SimpleOnScaleGestureListener(){
+            override fun onScale(detector: ScaleGestureDetector): Boolean {
+                val currentZoomRatio = imageCapture?.camera?.cameraInfo?.zoomState?.value?.zoomRatio ?: 0F
+                imageCapture?.camera?.cameraControl?.setZoomRatio(currentZoomRatio*detector.scaleFactor)
+                return true
+            }
+        })
+        camera_preview.setOnTouchListener { _, motionEvent: MotionEvent ->
+            when (motionEvent.action) {
+                MotionEvent.ACTION_DOWN -> true
+                MotionEvent.ACTION_UP -> {
+                    val factory = camera_preview.meteringPointFactory
+                    val point = factory.createPoint(motionEvent.x, motionEvent.y)
+                    val action = FocusMeteringAction.Builder(point).build()
+                    imageCapture?.camera?.cameraControl?.startFocusAndMetering(action)
+                    true
+                }
+                MotionEvent.ACTION_MOVE -> scaleGestureDetector.onTouchEvent(motionEvent)
+                else -> false
+            }
+        }
+    }
+
+    override fun onRequestPermissionsResult(requestCode: Int, permissions: Array<String>, grantResults: IntArray) {
+        when (requestCode) {
+            CAMERA_PERMISSION_REQUEST_CODE -> if (grantResults.size == 1) {
+                if (grantResults[0] != PackageManager.PERMISSION_GRANTED) {
+                    ColoredAlertDialogBuilder(this)
+                        .setTitle(R.string.error)
+                        .setMessage(R.string.camera_perm_needed)
+                        .setCancelable(false)
+                        .setPositiveButton(R.string.ok) { _, _ ->
+                            isFinishingIntentionally = true
+                            finish()
+                        }.show()
+                } else {
+                    setupCamera()
+                }
+            }
+        }
+    }
+
+    private fun adaptPreviewSize(resolution: Size){
+        val metrics = DisplayMetrics()
+        windowManager.defaultDisplay.getMetrics(metrics)
+        //resolution.width and resolution.height seem to be inverted
+        val width = resolution.height
+        val height = resolution.width
+        camera_preview.layoutParams = if (metrics.widthPixels < width){
+            RelativeLayout.LayoutParams(
+                metrics.widthPixels,
+                (height * (metrics.widthPixels.toFloat() / width)).toInt()
+            )
+        } else {
+            RelativeLayout.LayoutParams(width, height)
+        }
+        (camera_preview.layoutParams as RelativeLayout.LayoutParams).addRule(RelativeLayout.CENTER_IN_PARENT)
+    }
+
+    private fun setupCamera(resolution: Size? = null){
+        val cameraProviderFuture = ProcessCameraProvider.getInstance(this)
+        cameraProviderFuture.addListener({
+            val cameraProvider: ProcessCameraProvider = cameraProviderFuture.get()
+            val preview = Preview.Builder()
+                .build()
+                .also {
+                    it.setSurfaceProvider(camera_preview.surfaceProvider)
+                }
+            val builder = ImageCapture.Builder()
+                .setFlashMode(ImageCapture.FLASH_MODE_AUTO)
+            resolution?.let {
+                builder.setTargetResolution(it)
+            }
+            val hdrImageCapture = HdrImageCaptureExtender.create(builder)
+            val cameraSelector = if (isBackCamera){ CameraSelector.DEFAULT_BACK_CAMERA } else { CameraSelector.DEFAULT_FRONT_CAMERA }
+
+            if (hdrImageCapture.isExtensionAvailable(cameraSelector)){
+                hdrImageCapture.enableExtension(cameraSelector)
+            }
+
+            imageCapture = builder.build()
+
+            cameraProvider.unbindAll()
+            val camera = cameraProvider.bindToLifecycle(this, cameraSelector, preview, imageCapture)
+
+            adaptPreviewSize(imageCapture!!.attachedSurfaceResolution!!)
+
+            val info = Camera2CameraInfo.from(camera.cameraInfo)
+            val cameraManager = getSystemService(Context.CAMERA_SERVICE) as CameraManager
+            val characteristics = cameraManager.getCameraCharacteristics(info.cameraId)
+            characteristics.get(CameraCharacteristics.SCALER_STREAM_CONFIGURATION_MAP)?.let { streamConfigurationMap ->
+                resolutions = streamConfigurationMap.getOutputSizes(imageCapture!!.imageFormat)
+            }
+        }, ContextCompat.getMainExecutor(this))
+    }
+
+    private fun takePhoto() {
+        val imageCapture = imageCapture ?: return
+        val outputBuff = ByteArrayOutputStream()
+        val outputOptions = ImageCapture.OutputFileOptions.Builder(outputBuff).build()
+        imageCapture.takePicture(outputOptions, ContextCompat.getMainExecutor(this), object : ImageCapture.OnImageSavedCallback {
+            override fun onImageSaved(outputFileResults: ImageCapture.OutputFileResults) {
+                take_photo_button.onPhotoTaken()
+                if (gocryptfsVolume.importFile(ByteArrayInputStream(outputBuff.toByteArray()), PathUtils.pathJoin(outputDirectory, fileName))){
+                    Toast.makeText(applicationContext, getString(R.string.picture_save_success, fileName), Toast.LENGTH_SHORT).show()
+                } else {
+                    ColoredAlertDialogBuilder(applicationContext)
                         .setTitle(R.string.error)
                         .setMessage(R.string.picture_save_failed)
                         .setCancelable(false)
@@ -83,10 +207,11 @@ class CameraActivity : BaseActivity(), SensorOrientationListener.Listener {
                         .show()
                 }
             }
+            override fun onError(exception: ImageCaptureException) {
+                take_photo_button.onPhotoTaken()
+                Toast.makeText(applicationContext, exception.message, Toast.LENGTH_SHORT).show()
+            }
         })
-        take_photo_button.onClick = ::onClickTakePhoto
-        orientedIcons = listOf(image_hdr, image_timer, image_grid, image_close, image_flash, image_camera_switch)
-        sensorOrientationListener = SensorOrientationListener(this)
     }
 
     private fun onClickTakePhoto() {
@@ -102,49 +227,41 @@ class CameraActivity : BaseActivity(), SensorOrientationListener.Listener {
                     Thread.sleep(1000)
                 }
                 runOnUiThread {
-                    camera.takePicture()
+                    takePhoto()
                     text_timer.visibility = View.GONE
                 }
             }.start()
         } else {
-            camera.takePicture()
+            takePhoto()
         }
     }
 
     fun onClickFlash(view: View) {
-        currentFlashModeIndex = MiscUtils.incrementIndex(currentFlashModeIndex, flashModes)
+        image_flash.setImageResource(when (imageCapture?.flashMode) {
-        camera.flash = flashModes[currentFlashModeIndex]
+            ImageCapture.FLASH_MODE_AUTO -> {
-        image_flash.setImageResource(when (camera.flash) {
+                imageCapture?.flashMode = ImageCapture.FLASH_MODE_ON
-            Flash.AUTO -> R.drawable.icon_flash_auto
+                R.drawable.icon_flash_on
-            Flash.ON -> R.drawable.icon_flash_on
+            }
-            else -> R.drawable.icon_flash_off
+            ImageCapture.FLASH_MODE_ON -> {
+                imageCapture?.flashMode = ImageCapture.FLASH_MODE_OFF
+                R.drawable.icon_flash_off
+            }
+            else -> {
+                imageCapture?.flashMode = ImageCapture.FLASH_MODE_AUTO
+                R.drawable.icon_flash_auto
+            }
         })
     }
 
     fun onClickCameraSwitch(view: View) {
-        camera.toggleFacing()
+        isBackCamera = if (isBackCamera) {
-        if (camera.facing == Facing.FRONT){
-            image_camera_switch.setImageResource(R.drawable.icon_camera_back)
-        } else {
             image_camera_switch.setImageResource(R.drawable.icon_camera_front)
-            Thread {
+            false
-                Thread.sleep(25)
+        } else {
-                camera.flash = flashModes[currentFlashModeIndex] //refresh flash mode after switching camera
+            image_camera_switch.setImageResource(R.drawable.icon_camera_back)
-            }.start()
+            true
-        }
-    }
-
-    fun onClickHDR(view: View) {
-        camera.hdr = when (camera.hdr){
-            Hdr.ON -> {
-                image_hdr.setImageResource(R.drawable.icon_hdr_off)
-                Hdr.OFF
-            }
-            Hdr.OFF -> {
-                image_hdr.setImageResource(R.drawable.icon_hdr_on)
-                Hdr.ON
-            }
         }
+        setupCamera()
     }
 
     fun onClickTimer(view: View) {
@@ -173,17 +290,19 @@ class CameraActivity : BaseActivity(), SensorOrientationListener.Listener {
         dialog.show()
     }
 
-    fun onClickGrid(view: View) {
+    fun onClickRatio(view: View) {
+        resolutions?.let {
             ColoredAlertDialogBuilder(this)
-            .setTitle(getString(R.string.choose_grid))
+                .setTitle(R.string.choose_resolution)
-            .setSingleChoiceItems(gridTitles.map { getString(it) }.toTypedArray(), gridValues.indexOf(camera.grid)){ dialog, which ->
+                .setSingleChoiceItems(DialogSingleChoiceAdapter(this, it.map { size -> size.toString() }.toTypedArray()), currentResolutionIndex) { dialog, which ->
-                camera.grid = gridValues[which]
+                    setupCamera(resolutions!![which])
-                image_grid.setImageResource(if (camera.grid == Grid.OFF){ R.drawable.icon_grid_off } else { R.drawable.icon_grid_on })
                     dialog.dismiss()
+                    currentResolutionIndex = which
                 }
                 .setNegativeButton(R.string.cancel, null)
                 .show()
         }
+    }
 
     fun onClickClose(view: View) {
         isFinishingIntentionally = true
@@ -192,6 +311,7 @@ class CameraActivity : BaseActivity(), SensorOrientationListener.Listener {
 
     override fun onDestroy() {
         super.onDestroy()
+        cameraExecutor.shutdown()
         if (!isFinishingIntentionally) {
             gocryptfsVolume.close()
             RestrictedFileProvider.wipeAll(this)

app/src/main/java/sushi/hardcore/droidfs/explorers/BaseExplorerActivity.kt

@@ -419,7 +419,7 @@ open class BaseExplorerActivity : BaseActivity() {
                             setCurrentPath(currentDirectoryPath)
                             dialog.dismiss()
                         }
-                        .setNegativeButton(R.string.cancel) { dialog, _ -> dialog.dismiss() }
+                        .setNegativeButton(R.string.cancel, null)
                         .show()
                 true
             }

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

@@ -1,5 +1,5 @@
 <vector android:height="24dp" android:tint="#FFFFFF"
     android:viewportHeight="24" android:viewportWidth="24"
     android:width="24dp" xmlns:android="http://schemas.android.com/apk/res/android">
-    <path android:fillColor="@android:color/white" android:pathData="M20,2L4,2c-1.1,0 -2,0.9 -2,2v16c0,1.1 0.9,2 2,2h16c1.1,0 2,-0.9 2,-2L22,4c0,-1.1 -0.9,-2 -2,-2zM8,20L4,20v-4h4v4zM8,14L4,14v-4h4v4zM8,8L4,8L4,4h4v4zM14,20h-4v-4h4v4zM14,14h-4v-4h4v4zM14,8h-4L10,4h4v4zM20,20h-4v-4h4v4zM20,14h-4v-4h4v4zM20,8h-4L16,4h4v4z"/>
+    <path android:fillColor="@android:color/white" android:pathData="M19,12h-2v3h-3v2h5v-5zM7,9h3L10,7L5,7v5h2L7,9zM21,3L3,3c-1.1,0 -2,0.9 -2,2v14c0,1.1 0.9,2 2,2h18c1.1,0 2,-0.9 2,-2L23,5c0,-1.1 -0.9,-2 -2,-2zM21,19.01L3,19.01L3,4.99h18v14.02z"/>
 </vector>

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

@@ -1,5 +0,0 @@
-<vector android:height="24dp" android:tint="#FFFFFF"
-    android:viewportHeight="24" android:viewportWidth="24"
-    android:width="24dp" xmlns:android="http://schemas.android.com/apk/res/android">
-    <path android:fillColor="@android:color/white" android:pathData="M8,4v1.45l2,2L10,4h4v4h-3.45l2,2L14,10v1.45l2,2L16,10h4v4h-3.45l2,2L20,16v1.45l2,2L22,4c0,-1.1 -0.9,-2 -2,-2L4.55,2l2,2L8,4zM16,4h4v4h-4L16,4zM1.27,1.27L0,2.55l2,2L2,20c0,1.1 0.9,2 2,2h15.46l2,2 1.27,-1.27L1.27,1.27zM10,12.55L11.45,14L10,14v-1.45zM4,6.55L5.45,8L4,8L4,6.55zM8,20L4,20v-4h4v4zM8,14L4,14v-4h3.45l0.55,0.55L8,14zM14,20h-4v-4h3.45l0.55,0.54L14,20zM16,20v-1.46L17.46,20L16,20z"/>
-</vector>

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

@@ -1,5 +0,0 @@
-<vector android:height="24dp" android:tint="#FFFFFF"
-    android:viewportHeight="24" android:viewportWidth="24"
-    android:width="24dp" xmlns:android="http://schemas.android.com/apk/res/android">
-    <path android:fillColor="@android:color/white" android:pathData="M17.5,15v-2h1.1l0.9,2L21,15l-0.9,-2.1c0.5,-0.2 0.9,-0.8 0.9,-1.4v-1c0,-0.8 -0.7,-1.5 -1.5,-1.5L16,9v4.9l1.1,1.1h0.4zM17.5,10.5h2v1h-2v-1zM13,10.5v0.4l1.5,1.5v-1.9c0,-0.8 -0.7,-1.5 -1.5,-1.5h-1.9l1.5,1.5h0.4zM9.5,9.5l-7,-7 -1.1,1L6.9,9h-0.4v2h-2L4.5,9L3,9v6h1.5v-2.5h2L6.5,15L8,15v-4.9l1.5,1.5L9.5,15h3.4l7.6,7.6 1.1,-1.1 -12.1,-12z"/>
-</vector>

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

@@ -1,5 +0,0 @@
-<vector android:height="24dp" android:tint="#FFFFFF"
-    android:viewportHeight="24" android:viewportWidth="24"
-    android:width="24dp" xmlns:android="http://schemas.android.com/apk/res/android">
-    <path android:fillColor="@android:color/white" android:pathData="M21,11.5v-1c0,-0.8 -0.7,-1.5 -1.5,-1.5L16,9v6h1.5v-2h1.1l0.9,2L21,15l-0.9,-2.1c0.5,-0.3 0.9,-0.8 0.9,-1.4zM19.5,11.5h-2v-1h2v1zM6.5,11h-2L4.5,9L3,9v6h1.5v-2.5h2L6.5,15L8,15L8,9L6.5,9v2zM13,9L9.5,9v6L13,15c0.8,0 1.5,-0.7 1.5,-1.5v-3c0,-0.8 -0.7,-1.5 -1.5,-1.5zM13,13.5h-2v-3h2v3z"/>
-</vector>

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

@@ -6,17 +6,11 @@
     xmlns:app="http://schemas.android.com/apk/res-auto"
     tools:context=".CameraActivity">
 
-    <com.otaliastudios.cameraview.CameraView
+    <androidx.camera.view.PreviewView
-        android:id="@+id/camera"
+        android:id="@+id/camera_preview"
-        android:layout_width="match_parent"
+        android:layout_width="0dp"
-        android:layout_height="match_parent"
+        android:layout_height="0dp"
-        app:cameraGesturePinch="zoom"
+        android:layout_centerInParent="true"/>
-        app:cameraGestureTap="autoFocus"
-        app:cameraAutoFocusMarker="@string/cameraview_default_autofocus_marker"
-        app:cameraHdr="on"
-        app:cameraPictureFormat="jpeg"
-        app:cameraPlaySounds="false"
-        app:cameraAudio="off"/>
 
     <androidx.constraintlayout.widget.ConstraintLayout
         android:layout_width="match_parent"
@@ -24,11 +18,11 @@
         android:layout_marginTop="20dp">
 
         <ImageView
-            android:id="@+id/image_hdr"
+            android:id="@+id/image_ratio"
             android:layout_width="30dp"
             android:layout_height="30dp"
-            android:onClick="onClickHDR"
+            android:onClick="onClickRatio"
-            android:src="@drawable/icon_hdr_on"
+            android:src="@drawable/icon_aspect_ratio"
             app:layout_constraintBottom_toBottomOf="parent"
             app:layout_constraintEnd_toStartOf="@id/image_timer"
             app:layout_constraintStart_toStartOf="parent"
@@ -41,19 +35,8 @@
             android:onClick="onClickTimer"
             android:src="@drawable/icon_timer_off"
             app:layout_constraintBottom_toBottomOf="parent"
-            app:layout_constraintEnd_toStartOf="@id/image_grid"
+            app:layout_constraintEnd_toStartOf="@id/image_close"
-            app:layout_constraintStart_toEndOf="@id/image_hdr"
+            app:layout_constraintStart_toEndOf="@id/image_ratio"
-            app:layout_constraintTop_toTopOf="parent" />
-
-        <ImageView
-            android:id="@+id/image_grid"
-            android:layout_width="30dp"
-            android:layout_height="30dp"
-            android:onClick="onClickGrid"
-            android:src="@drawable/icon_grid_off"
-            app:layout_constraintBottom_toBottomOf="parent"
-            app:layout_constraintEnd_toStartOf="@+id/image_close"
-            app:layout_constraintStart_toEndOf="@+id/image_timer"
             app:layout_constraintTop_toTopOf="parent" />
 
         <ImageView
@@ -64,7 +47,7 @@
             android:src="@drawable/icon_close"
             app:layout_constraintBottom_toBottomOf="parent"
             app:layout_constraintEnd_toEndOf="parent"
-            app:layout_constraintStart_toEndOf="@id/image_grid"
+            app:layout_constraintStart_toEndOf="@id/image_timer"
             app:layout_constraintTop_toTopOf="parent" />
 
     </androidx.constraintlayout.widget.ConstraintLayout>

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

@@ -162,10 +162,6 @@
     <string name="move_success_msg">The selected items have been successfully moved.</string>
     <string name="move_success">Move successful !</string>
     <string name="enter_timer_duration">Enter the timer duration (in s)</string>
-    <string name="grid_none">None</string>
-    <string name="grid_3x3">3x3</string>
-    <string name="grid_4x4">4x4</string>
-    <string name="choose_grid">Choose grid</string>
     <string name="timer_empty_error_msg">Please enter a numeric value</string>
     <string name="path_from_uri_null_error_msg">Failed to retrieve the selected path.</string>
     <string name="create_cant_write_error_msg">DroidFS doesn\'t have write access to this path. Please try another location.</string>
@@ -193,4 +189,6 @@
     <string name="hidden_volume">Hidden Volume</string>
     <string name="error_slash_in_name">Volume name cannot contain slashes</string>
     <string name="hidden_volume_warning">Hidden volumes are stored in the app\'s internal storage. Other apps can\'t see these volumes without root access. However, if you uninstall DroidFS or clear data of the app, all your hidden volumes will be LOST. Be sure to make backups !</string>
+    <string name="camera_perm_needed">Camera permission is needed to take photo.</string>
+    <string name="choose_resolution">Choose a resolution</string>
 </resources>

build.gradle

@@ -6,7 +6,7 @@ buildscript {
         jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:4.1.0'
+        classpath 'com.android.tools.build:gradle:4.1.1'
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
     }
 }