Migrate CheckForNewAppVersion to Worker (and rename it)

app/build.gradle

@@ -220,6 +220,7 @@ dependencies {
     // https://developer.android.com/jetpack/androidx/releases/viewpager2#1.1.0-alpha01
     implementation 'androidx.viewpager2:viewpager2:1.1.0-beta01'
     implementation 'androidx.webkit:webkit:1.4.0'
+    implementation 'androidx.work:work-runtime:2.7.1'
     implementation 'com.google.android.material:material:1.4.0'
 
 /** Third-party libraries **/

app/src/main/AndroidManifest.xml

@@ -381,10 +381,6 @@
         <service
             android:name=".RouterActivity$FetcherService"
             android:exported="false" />
-        <service
-            android:name=".CheckForNewAppVersion"
-            android:exported="false"
-            android:permission="android.permission.BIND_JOB_SERVICE" />
 
         <!-- opting out of sending metrics to Google in Android System WebView -->
         <meta-data android:name="android.webkit.WebView.MetricsOptOut" android:value="true" />

app/src/main/java/org/schabi/newpipe/MainActivity.java

@@ -173,10 +173,9 @@ public class MainActivity extends AppCompatActivity {
         final SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(app);
 
         if (prefs.getBoolean(app.getString(R.string.update_app_key), true)) {
-            // Start the service which is checking all conditions
+            // Start the worker which is checking all conditions
             // and eventually searching for a new version.
-            // The service searching for a new NewPipe version must not be started in background.
-            CheckForNewAppVersion.startNewVersionCheckService(app);
+            NewVersionWorker.enqueueNewVersionCheckingWork(app);
         }
     }
 

app/src/main/java/org/schabi/newpipe/NewVersionWorker.java

@@ -8,11 +8,14 @@ import android.net.Uri;
 import android.util.Log;
 
 import androidx.annotation.NonNull;
-import androidx.annotation.Nullable;
-import androidx.core.app.JobIntentService;
 import androidx.core.app.NotificationCompat;
 import androidx.core.app.NotificationManagerCompat;
 import androidx.preference.PreferenceManager;
+import androidx.work.OneTimeWorkRequest;
+import androidx.work.WorkManager;
+import androidx.work.WorkRequest;
+import androidx.work.Worker;
+import androidx.work.WorkerParameters;
 
 import com.grack.nanojson.JsonObject;
 import com.grack.nanojson.JsonParser;
@@ -24,12 +27,16 @@ import org.schabi.newpipe.util.ReleaseVersionUtil;
 
 import java.io.IOException;
 
-public final class CheckForNewAppVersion extends JobIntentService {
+public final class NewVersionWorker extends Worker {
 
     private static final boolean DEBUG = MainActivity.DEBUG;
-    private static final String TAG = CheckForNewAppVersion.class.getSimpleName();
+    private static final String TAG = NewVersionWorker.class.getSimpleName();
     private static final String NEWPIPE_API_URL = "https://newpipe.net/api/data.json";
-    private static final int JOB_ID = -17000;
+
+    public NewVersionWorker(@NonNull final Context context,
+                            @NonNull final WorkerParameters workerParams) {
+        super(context, workerParams);
+    }
 
     /**
      * Method to compare the current and latest available app version.
@@ -130,7 +137,7 @@ public final class CheckForNewAppVersion extends JobIntentService {
     }
 
     /**
-     * Start a new service which
+     * Start a new worker which
      * checks if all conditions for performing a version check are met,
      * fetches the API endpoint {@link #NEWPIPE_API_URL} containing info
      * about the latest NewPipe version
@@ -144,22 +151,25 @@ public final class CheckForNewAppVersion extends JobIntentService {
      * <li>The app did not recently check for updates.
      * We do not want to make unnecessary connections and DOS our servers.</li>
      * </ul>
-     * <b>Must not be executed</b> when the app is in background.
      */
-    public static void startNewVersionCheckService(final Context context) {
-        enqueueWork(context, CheckForNewAppVersion.class, JOB_ID,
-                new Intent(context, CheckForNewAppVersion.class));
+    public static void enqueueNewVersionCheckingWork(final Context context) {
+        final WorkRequest workRequest =
+                new OneTimeWorkRequest.Builder(NewVersionWorker.class).build();
+        WorkManager.getInstance(context).enqueue(workRequest);
     }
 
+    @NonNull
     @Override
-    protected void onHandleWork(@Nullable final Intent intent) {
+    public Result doWork() {
         try {
             checkNewVersion();
         } catch (final IOException e) {
             Log.w(TAG, "Could not fetch NewPipe API: probably network problem", e);
+            return Result.failure();
         } catch (final ReCaptchaException e) {
             Log.e(TAG, "ReCaptchaException should never happen here.", e);
+            return Result.failure();
         }
-
+        return Result.success();
     }
 }

app/src/main/java/org/schabi/newpipe/settings/UpdateSettingsFragment.java

@@ -1,12 +1,11 @@
 package org.schabi.newpipe.settings;
 
-import static org.schabi.newpipe.CheckForNewAppVersion.startNewVersionCheckService;
-
 import android.os.Bundle;
 import android.widget.Toast;
 
 import androidx.preference.Preference;
 
+import org.schabi.newpipe.NewVersionWorker;
 import org.schabi.newpipe.R;
 
 public class UpdateSettingsFragment extends BasePreferenceFragment {
@@ -33,7 +32,7 @@ public class UpdateSettingsFragment extends BasePreferenceFragment {
         // Reset the expire time. This is necessary to check for an update immediately.
         defaultPreferences.edit()
                 .putLong(getString(R.string.update_expiry_key), 0).apply();
-        startNewVersionCheckService(getContext());
+        NewVersionWorker.enqueueNewVersionCheckingWork(getContext());
     }
 
     @Override