Start service for update checks in onPastCreate()

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

@@ -65,7 +65,6 @@ public class App extends MultiDexApplication {
     public static final String PACKAGE_NAME = BuildConfig.APPLICATION_ID;
     private static final String TAG = App.class.toString();
     private static App app;
-    private static boolean wasAppInForeground = false;
 
     @NonNull
     public static App getApp() {
@@ -256,11 +255,4 @@ public class App extends MultiDexApplication {
         return false;
     }
 
-    public static boolean wasAppInForeground() {
-        return wasAppInForeground;
-    }
-
-    public static void setWasAppInForeground(final boolean wasAppInForeground) {
-        App.wasAppInForeground = wasAppInForeground;
-    }
 }

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

@@ -235,6 +235,23 @@ public final class CheckForNewAppVersion extends IntentService {
         }
     }
 
+    /**
+     * Start a new service 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
+     * and displays a notification about ana available update.
+     * <br>
+     * Following conditions need to be met, before data is request from the server:
+     * <ul>
+     * <li> The app is signed with the correct signing key (by TeamNewPipe / schabi).
+     * If the signing key differs from the one used upstream, the update cannot be installed.</li>
+     * <li>The user enabled searching for and notifying about updates in the settings.</li>
+     * <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 Intent intent = new Intent(App.getApp().getApplicationContext(),
                 CheckForNewAppVersion.class);

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

@@ -166,6 +166,15 @@ public class MainActivity extends AppCompatActivity {
         openMiniPlayerUponPlayerStarted();
     }
 
+    @Override
+    protected void onPostCreate(final Bundle savedInstanceState) {
+        super.onPostCreate(savedInstanceState);
+        // Start the service 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.
+        startNewVersionCheckService();
+    }
+
     private void setupDrawer() throws Exception {
         //Tabs
         final int currentServiceId = ServiceHelper.getSelectedServiceId(this);
@@ -516,19 +525,6 @@ public class MainActivity extends AppCompatActivity {
                 getString(R.string.enable_watch_history_key), true);
         drawerLayoutBinding.navigation.getMenu().findItem(ITEM_ID_HISTORY)
                 .setVisible(isHistoryEnabled);
-
-        if (!App.wasAppInForeground()) {
-            // Check for new app version
-            // The service searching for a new NewPipe version must not be started in background
-            // and therefore needs to be placed in onResume().
-            // Only start the service once when app is started
-            // and not everytime onResume() is called.
-            if (DEBUG) {
-                Log.d(TAG, "App is in foreground for the first time");
-            }
-            App.setWasAppInForeground(true);
-            startNewVersionCheckService();
-        }
     }
 
     @Override