FIX: Fix find-my-phone for android 10 with notifications.

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/GBApplication.java

@@ -90,7 +90,7 @@ import static nodomain.freeyourgadget.gadgetbridge.model.DeviceType.MIBAND4;
 import static nodomain.freeyourgadget.gadgetbridge.model.DeviceType.ZETIME;
 import static nodomain.freeyourgadget.gadgetbridge.model.DeviceType.fromKey;
 import static nodomain.freeyourgadget.gadgetbridge.util.GB.NOTIFICATION_CHANNEL_ID;
-
+import static nodomain.freeyourgadget.gadgetbridge.util.GB.NOTIFICATION_CHANNEL_HIGH_PRIORITY_ID;
 /**
  * Main Application class that initializes and provides access to certain things like
  * logging and DB access.
@@ -211,6 +211,14 @@ public class GBApplication extends Application {
                     notificationManager.createNotificationChannel(channel);
                 }
 
+                NotificationChannel channelHighPr = notificationManager.getNotificationChannel(NOTIFICATION_CHANNEL_HIGH_PRIORITY_ID );
+                if (channelHighPr == null) {
+                    channelHighPr = new NotificationChannel(NOTIFICATION_CHANNEL_HIGH_PRIORITY_ID,
+                            getString(R.string.notification_channel_high_priority_name),
+                            NotificationManager.IMPORTANCE_HIGH);
+                    notificationManager.createNotificationChannel(channelHighPr);
+                }
+
                 bluetoothStateChangeReceiver = new BluetoothStateChangeReceiver();
                 registerReceiver(bluetoothStateChangeReceiver, new IntentFilter(BluetoothAdapter.ACTION_STATE_CHANGED));
             }

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/activities/FindPhoneActivity.java

@@ -17,6 +17,7 @@
     along with this program.  If not, see <http://www.gnu.org/licenses/>. */
 package nodomain.freeyourgadget.gadgetbridge.activities;
 
+import android.app.NotificationManager;
 import android.content.BroadcastReceiver;
 import android.content.Context;
 import android.content.Intent;
@@ -39,6 +40,7 @@ import java.io.IOException;
 
 import androidx.localbroadcastmanager.content.LocalBroadcastManager;
 import nodomain.freeyourgadget.gadgetbridge.R;
+import nodomain.freeyourgadget.gadgetbridge.util.GB;
 
 
 public class FindPhoneActivity extends AbstractGBActivity {
@@ -84,6 +86,9 @@ public class FindPhoneActivity extends AbstractGBActivity {
             }
         });
 
+        NotificationManager notificationManager = (NotificationManager)getSystemService(Context.NOTIFICATION_SERVICE);
+        notificationManager.cancel( GB.NOTIFICATION_ID_PHONE_FIND );
+
         vibrate();
         playRingtone();
     }

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/AbstractDeviceSupport.java

@@ -26,6 +26,7 @@ import android.content.Intent;
 import android.graphics.Bitmap;
 import android.graphics.BitmapFactory;
 import android.net.Uri;
+import android.os.Build;
 import android.telephony.SmsManager;
 
 import org.slf4j.Logger;
@@ -67,6 +68,7 @@ import nodomain.freeyourgadget.gadgetbridge.service.receivers.GBMusicControlRece
 import nodomain.freeyourgadget.gadgetbridge.util.GB;
 import nodomain.freeyourgadget.gadgetbridge.util.Prefs;
 
+import static nodomain.freeyourgadget.gadgetbridge.util.GB.NOTIFICATION_CHANNEL_HIGH_PRIORITY_ID;
 import static nodomain.freeyourgadget.gadgetbridge.util.GB.NOTIFICATION_CHANNEL_ID;
 
 // TODO: support option for a single reminder notification when notifications could not be delivered?
@@ -86,6 +88,8 @@ public abstract class AbstractDeviceSupport implements DeviceSupport {
     private Context context;
     private boolean autoReconnect;
 
+
+
     @Override
     public void setContext(GBDevice gbDevice, BluetoothAdapter btAdapter, Context context) {
         this.gbDevice = gbDevice;
@@ -170,9 +174,7 @@ public abstract class AbstractDeviceSupport implements DeviceSupport {
         LOG.info("Got GBDeviceEventFindPhone");
         switch (deviceEvent.event) {
             case START:
-                Intent startIntent = new Intent(getContext(), FindPhoneActivity.class);
+                handleGBDeviceEventFindPhoneStart();
-                startIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
-                context.startActivity(startIntent);
                 break;
             case STOP:
                 Intent intent = new Intent(FindPhoneActivity.ACTION_FOUND);
@@ -183,6 +185,38 @@ public abstract class AbstractDeviceSupport implements DeviceSupport {
         }
     }
 
+    private void handleGBDeviceEventFindPhoneStart() {
+        if ( Build.VERSION.SDK_INT < 29 ) { // this could be used if app in foreground
+            Intent startIntent = new Intent(getContext(), FindPhoneActivity.class);
+            startIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+            context.startActivity(startIntent);
+        }
+        else {
+            handleGBDeviceEventFindPhoneStartNotification();
+        }
+    }
+
+    private void handleGBDeviceEventFindPhoneStartNotification() {
+        LOG.info("Got handleGBDeviceEventFindPhoneStartNotification");
+        Intent intent = new Intent(context, FindPhoneActivity.class);
+
+        PendingIntent pi = PendingIntent.getActivity(context, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT);
+        NotificationManager notificationManager = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
+
+        NotificationCompat.Builder notification = new NotificationCompat.Builder(context, NOTIFICATION_CHANNEL_HIGH_PRIORITY_ID );
+        notification
+                .setSmallIcon(R.drawable.ic_notification)
+                .setOngoing(false)
+                .setFullScreenIntent(pi, true)
+                .setPriority(NotificationCompat.PRIORITY_HIGH)
+                .setAutoCancel(true)
+                .setContentTitle(  context.getString( R.string.find_my_phone_notification ) );
+        notification.setGroup("BackgroundService");
+
+        notificationManager.notify( GB.NOTIFICATION_ID_PHONE_FIND, notification.build());
+    }
+
+
     private void handleGBDeviceEvent(GBDeviceEventMusicControl musicEvent) {
         Context context = getContext();
         LOG.info("Got event for MUSIC_CONTROL");

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/util/GB.java

@@ -59,6 +59,7 @@ import static nodomain.freeyourgadget.gadgetbridge.GBApplication.isRunningOreoOr
 public class GB {
 
     public static final String NOTIFICATION_CHANNEL_ID = "gadgetbridge";
+    public static final String NOTIFICATION_CHANNEL_HIGH_PRIORITY_ID = "gadgetbridge_high_priority";
     public static final String NOTIFICATION_CHANNEL_ID_TRANSFER = "gadgetbridge transfer";
 
     public static final int NOTIFICATION_ID = 1;
@@ -66,6 +67,7 @@ public class GB {
     public static final int NOTIFICATION_ID_LOW_BATTERY = 3;
     public static final int NOTIFICATION_ID_TRANSFER = 4;
     public static final int NOTIFICATION_ID_EXPORT_FAILED = 5;
+    public static final int NOTIFICATION_ID_PHONE_FIND = 6;
 
     private static final Logger LOG = LoggerFactory.getLogger(GB.class);
     public static final int INFO = 1;

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

@@ -267,6 +267,7 @@
     <string name="test">Test</string>
     <string name="test_notification">Test notification</string>
     <string name="this_is_a_test_notification_from_gadgetbridge">This is a test notification from Gadgetbridge</string>
+    <string name="find_my_phone_notification">Find my phone</string>
     <string name="bluetooth_is_not_supported_">Bluetooth is not supported.</string>
     <string name="bluetooth_is_disabled_">Bluetooth is disabled.</string>
     <string name="tap_connected_device_for_app_mananger">Tap connected device for App manager</string>
@@ -700,6 +701,7 @@
     <string name="devicetype_banglejs">Bangle.js</string>
     <string name="choose_auto_export_location">Choose export location</string>
     <string name="notification_channel_name">Gadgetbridge notifications</string>
+    <string name="notification_channel_high_priority_name">Gadgetbridge notifications high priority</string>
     <string name="devicetype_amazfit_gts">Amazfit GTS</string>
     <!-- Menus on the smart device -->
     <string name="menuitem_shortcut_alipay">Alipay (Shortcut)</string>