Integrated WorkManager & Datastore Preference Library.

AnkiDroid/build.gradle

@@ -315,6 +315,8 @@ dependencies {
     implementation "org.jetbrains.kotlin:kotlin-test:$kotlin_version"
     implementation 'com.github.ByteHamster:SearchPreference:v2.3.0'
     implementation 'com.github.AppIntro:AppIntro:6.2.0'
+    implementation "androidx.work:work-runtime-ktx:2.7.1"
+    implementation "androidx.datastore:datastore-preferences:1.0.0"
 
     // Cannot use debugImplementation since classes need to be imported in AnkiDroidApp
     // and there's no no-op version for release build. Usage has been disabled for release

AnkiDroid/src/main/AndroidManifest.xml

@@ -522,6 +522,18 @@
                 android:name="android.support.FILE_PROVIDER_PATHS"
                 android:resource="@xml/filepaths" />
         </provider>
+
+        <!-- Using custom work manager initialization -->
+        <provider
+            android:name="androidx.startup.InitializationProvider"
+            android:authorities="${applicationId}.androidx-startup"
+            android:exported="false"
+            tools:node="merge">
+            <meta-data
+                android:name="androidx.work.WorkManagerInitializer"
+                android:value="androidx.startup"
+                tools:node="remove" />
+        </provider>
     </application>
 
 </manifest>

AnkiDroid/src/main/java/com/ichi2/anki/AnkiDroidApp.kt

@@ -57,7 +57,7 @@ import java.util.regex.Pattern
  */
 @KotlinCleanup("lots to do")
 @KotlinCleanup("IDE Lint")
-open class AnkiDroidApp : Application() {
+open class AnkiDroidApp : Application(), androidx.work.Configuration.Provider {
     /** An exception if the WebView subsystem fails to load  */
     private var mWebViewError: Throwable? = null
     private val mNotifications = MutableLiveData<Void?>()
@@ -180,9 +180,11 @@ open class AnkiDroidApp : Application() {
                 }
             }
         }
+        // TODO: Notification CleanUP. Delete the Boot Service after successful implementation of Notification Work Manager.
         Timber.i("AnkiDroidApp: Starting Services")
         BootService().onReceive(this, Intent(this, BootService::class.java))
 
+        // TODO: Notification CleanUP. Delete the Notification Service after successful implementation of Notification Work Manager.
         // Register for notifications
         mNotifications.observeForever { NotificationService.triggerNotificationFor(this) }
         Themes.systemIsInNightMode =
@@ -210,6 +212,13 @@ open class AnkiDroidApp : Application() {
         }
     }
 
+    /**
+     *  Our configuration for custom work manager.
+     *  We are using custom work manager because UNIT TESTS are failing.
+     * TODO: Remove custom implementation after implementing 14 tests using WorkManagerTestInitHelper. SEE: https://developer.android.com/topic/libraries/architecture/workmanager/how-to/integration-testing
+     */
+    override fun getWorkManagerConfiguration() = androidx.work.Configuration.Builder().build()
+
     /**
      * A tree which logs necessary data for crash reporting.
      *