Add save image logic for API 29(Q) compatibility

app/src/androidTest/java/WorkerInstrumentationTest.kt

@@ -15,6 +15,7 @@
  */
 
 import android.content.Context
+import android.os.Build
 import androidx.test.core.app.ApplicationProvider
 import androidx.work.ListenableWorker
 import androidx.work.testing.TestListenableWorkerBuilder
@@ -23,6 +24,7 @@ import com.example.bluromatic.KEY_IMAGE_URI
 import com.example.bluromatic.workers.BlurWorker
 import com.example.bluromatic.workers.CleanupWorker
 import com.example.bluromatic.workers.SaveImageToFileWorker
+import junit.framework.TestCase
 import kotlinx.coroutines.runBlocking
 import org.junit.Assert.assertTrue
 import org.junit.Before
@@ -75,10 +77,17 @@ class WorkerInstrumentationTest {
             val resultUri = result.outputData.getString(KEY_IMAGE_URI)
             assertTrue(result is ListenableWorker.Result.Success)
             assertTrue(result.outputData.keyValueMap.containsKey(KEY_IMAGE_URI))
-            assertTrue(
-                resultUri?.startsWith("content://media/external/images/media/")
-                    ?: false
-            )
+            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
+                TestCase.assertTrue(
+                    resultUri?.startsWith("content://media/external_primary/images/media/")
+                        ?: false
+                )
+            } else {
+                TestCase.assertTrue(
+                    resultUri?.startsWith("content://media/external/images/media/")
+                        ?: false
+                )
+            }
         }
     }
 }

app/src/main/java/com/example/bluromatic/domain/CreateImageUriUseCase.kt

@@ -0,0 +1,30 @@
+package com.example.bluromatic.domain
+
+import android.content.ContentResolver
+import android.content.ContentValues
+import android.net.Uri
+import android.provider.MediaStore
+import androidx.annotation.RequiresApi
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.withContext
+
+/**
+ * Create imageUri.
+ */
+@RequiresApi(29)
+class CreateImageUriUseCase {
+    suspend operator fun invoke(resolver: ContentResolver, filename: String): Uri? {
+        return withContext(Dispatchers.IO) {
+            val imageCollection =
+                MediaStore.Images.Media.getContentUri(MediaStore.VOLUME_EXTERNAL_PRIMARY)
+            val values = ContentValues().apply {
+                put(MediaStore.Images.Media.DISPLAY_NAME, filename)
+                put(MediaStore.Images.Media.RELATIVE_PATH, "Pictures/Blur-O-Matic")
+                put(MediaStore.Images.Media.MIME_TYPE, "image/jpeg")
+                put(MediaStore.Images.Media.IS_PENDING, 1)
+            }
+            val imageUri = resolver.insert(imageCollection, values)
+            imageUri
+        }
+    }
+}

app/src/main/java/com/example/bluromatic/domain/SaveImageUseCase.kt

@@ -0,0 +1,38 @@
+package com.example.bluromatic.domain
+
+import android.content.ContentResolver
+import android.content.ContentValues
+import android.graphics.Bitmap
+import android.net.Uri
+import android.provider.MediaStore
+import android.util.Log
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.withContext
+
+private const val TAG = "SaveImage"
+
+/**
+ * Save image into MediaStore.
+ */
+class SaveImageUseCase {
+    suspend operator fun invoke(
+        resolver: ContentResolver,
+        contentUri: Uri?,
+        bitmap: Bitmap,
+    ) = withContext(Dispatchers.IO) {
+        try {
+            contentUri?.let { contentUri ->
+                resolver.openOutputStream(contentUri, "w")?.use { outputStream ->
+                    bitmap.compress(Bitmap.CompressFormat.JPEG, 85, outputStream)
+                }
+                val values = ContentValues().apply {
+                    put(MediaStore.Images.Media.IS_PENDING, 0)
+                }
+                resolver.update(contentUri, values, null, null)
+            }
+        } catch (e: Throwable) {
+            Log.e(TAG, "Error occurs $e")
+            throw e
+        }
+    }
+}

app/src/main/java/com/example/bluromatic/workers/SaveImageToFileWorker.kt

@@ -19,6 +19,7 @@ package com.example.bluromatic.workers
 import android.content.Context
 import android.graphics.BitmapFactory
 import android.net.Uri
+import android.os.Build
 import android.provider.MediaStore
 import android.util.Log
 import androidx.work.CoroutineWorker
@@ -27,6 +28,8 @@ import androidx.work.workDataOf
 import com.example.bluromatic.DELAY_TIME_MILLIS
 import com.example.bluromatic.KEY_IMAGE_URI
 import com.example.bluromatic.R
+import com.example.bluromatic.domain.CreateImageUriUseCase
+import com.example.bluromatic.domain.SaveImageUseCase
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.delay
 import kotlinx.coroutines.withContext
@@ -64,9 +67,25 @@ class SaveImageToFileWorker(ctx: Context, params: WorkerParameters) : CoroutineW
                 val bitmap = BitmapFactory.decodeStream(
                     resolver.openInputStream(Uri.parse(resourceUri))
                 )
-                val imageUrl = MediaStore.Images.Media.insertImage(
-                    resolver, bitmap, title, dateFormatter.format(Date())
-                )
+
+                val imageUrl: String?
+                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
+                    val createImageUriUseCase = CreateImageUriUseCase()
+                    val saveImageUseCase = SaveImageUseCase()
+
+                    val imageUri = createImageUriUseCase(
+                        resolver,
+                        "${title}_${dateFormatter.format(Date())}.jpg"
+                    )
+
+                    saveImageUseCase(resolver, imageUri, bitmap)
+                    imageUrl = imageUri.toString()
+                } else {
+                    @Suppress("DEPRECATION")
+                    imageUrl = MediaStore.Images.Media.insertImage(
+                        resolver, bitmap, title, dateFormatter.format(Date())
+                    )
+                }
                 if (!imageUrl.isNullOrEmpty()) {
                     val output = workDataOf(KEY_IMAGE_URI to imageUrl)