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Cannot resolve method addNotification ()

I replaced this (it allows me to show the notification only when the app was open):
private void addNotification() {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O){
NotificationChannel channel =
new NotificationChannel("MyNotifications", "MyNotifications", NotificationManager.IMPORTANCE_DEFAULT);
NotificationManager manager = getSystemService(NotificationManager.class);
manager.createNotificationChannel(channel);
}
NotificationCompat.Builder builder = new NotificationCompat.Builder(this, "MyNotifications")
.setContentTitle("Chiamata in arrivo da "+ receiverUserName)
.setSmallIcon(R.mipmap.ic_launcher)
.setAutoCancel(true)
.setContentText("Apri FtoF per partecipare alla videochiamata");
NotificationManagerCompat manager = NotificationManagerCompat.from(this);
manager.notify(999, builder.build());
}
with this (it allowed me to show the notification even when the app was closed:
public class PushNotificationReceiver extends BroadcastReceiver {
#Override
public void onReceive(Context context, Intent intent) {
//at this point the context has the permission to create remote views
addNotification(context);
setResultCode(Activity.RESULT_OK);
}
private void addNotification(Context context) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O){
NotificationChannel channel =
new NotificationChannel("MyNotifications", "MyNotifications", NotificationManager.IMPORTANCE_DEFAULT);
NotificationManager manager = getSystemService(NotificationManager.class);
manager.createNotificationChannel(channel);
}
NotificationCompat.Builder builder = new NotificationCompat.Builder(context, "MyNotifications")
.setContentTitle("Chiamata in arrivo")
.setSmallIcon(R.mipmap.ic_launcher)
.setAutoCancel(true)
.setContentText("Apri FtoF per partecipare alla videochiamata");
NotificationManagerCompat manager = NotificationManagerCompat.from(context);
manager.notify(999, builder.build());
}
}
But now on line 283 this error appears: Cannot resolve method 'addNotification ()'
Does anyone know why?
Complete Code: https://codeshare.io/5D8EgE
lines (111-136) (283)
Thank you

Group notification wont show

I am using FCM to send notifications between users when they receive a new message.
I had like to make a group notification from my app so it will show like this:
However, for some reason every new notification that I get, it deletes the other so it always shows only the latest notification.
My code is:
public class MyFirebaseMessagingService extends FirebaseMessagingService {
private FirebaseAuth auth;
private FirebaseFirestore db;
private static String GROUP_KEY = "NOTIFICATION";
#Override
public void onMessageReceived(RemoteMessage remoteMessage) {
createNotificationChannel();
notifyThis(remoteMessage.getData().get("title"),remoteMessage.getData().get("body"),remoteMessage.getData().get("var1"),remoteMessage.getData().get("var2"),remoteMessage.getData().get("var3"));
}
private void createNotificationChannel() {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
CharSequence name = "ABC";
String description = "ABCDE";
int importance = NotificationManager.IMPORTANCE_DEFAULT;
NotificationChannel channel = new NotificationChannel("191919", name, importance);
channel.setDescription(description);
NotificationManager notificationManager = getSystemService(NotificationManager.class);
notificationManager.createNotificationChannel(channel);
}
}
public void notifyThis(String title, String message, String var1, String var2, String var3) {
Intent intent = new Intent(this, ChatActivity.class);
intent.putExtra("ChatID",var1);
intent.putExtra("ReceiverID",var2);
intent.putExtra("itemID",var3);
PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, intent, 0);
NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(this, "191919")
.setSmallIcon(R.drawable.ic_launcher_custom_background)
.setContentTitle(title)
.setContentText(message)
.setContentIntent(pendingIntent)
.setPriority(NotificationCompat.PRIORITY_DEFAULT)
.setGroup(GROUP_KEY)
.setAutoCancel(true);
NotificationManagerCompat notificationManager = NotificationManagerCompat.from(this);
notificationManager.notify(0, mBuilder.build());
}
}
Is there any reason? Any chance that it is because of the channelId?
Also, I saw that I might need to build multiple notifications however how can I make it dynamic based on the amount of messages that the user gets?
Lets set I get 2 notifications and then I get one more message but I built only 2 notifications, how it will show me the third?
Thank you

Android Service stops broadcasting progress after a while

I have an Activity where the user can download a video. Upon user's click, the Download Service starts to download the content.
There is a progress bar in the Activity UI which I would like to update according to download progress in the service which broadcasts the progress periodically.
Everything works fine but after a certain time the service stops sending any broadcast progress, hence, the UI does not update anymore.
Additionally, how I can resume receiving the progress broadcast when the user goes to another Activity and comes back to this Activity? I mean, even if the above issue is solved, when the user presses back button and go to other activity and comes back to this activity, the progress gets lots. How can I check for any existing broadcast and receive it whenever the user comes to this activity.
In the ACTIVITY:
private BroadcastReceiver receiver = new BroadcastReceiver() {
#Override public void onReceive(Context context, Intent intent) {
Bundle bundle = intent.getExtras();
if (bundle != null) {
Log.d("DownloadService", "Progress Received In Activity");
Double progress = bundle.getDouble("PROGRESS");
updateDownloadProgressBar(progress);
}
}
};
private void startDownloadService() {
final String videoId = mItem.getAttributes().get(KEY_ASSET_ID);
Intent intent = new Intent(this, DownloadService.class);
intent.putExtra("VIDEOID", videoId);
startService(intent);
}
in the onResume():
registerReceiver(receiver, new IntentFilter(DownloadService.NOTIFICATION_SERVICE));
in the onPause():
unregisterReceiver(receiver);
In the SERVICE:
private void publishProgress(double progress) {
Log.d(TAG, "Broadcasting progress from Service");
Intent intent = new Intent(NOTIFICATION_SERVICE);
intent.putExtra("PROGRESS", progress);
sendBroadcast(intent);
}
The download and progress work fine to 38% then stop.

It seems that the service is being stopped/killed from the OS, to avoid that use foreground service so you can make sure it will not be killed from the OS.
See the sample code below:
Service
public class PendingService extends Service {
private final static String TAG = "PendingService";
public final static int NOTIFICATION_ID = 94;
#Override
public int onStartCommand(Intent intent, int flags, int startId) {
startInForeground();
// Do your work here ...
return START_STICKY;
}
private void startInForeground() {
String NOTIFICATION_CHANNEL_ID = "default";
String NOTIFICATION_CHANNEL_NAME = "My Pending Service";
String NOTIFICATION_CHANNEL_DESC = "This notification holding a pending task";
Intent notificationIntent = new Intent(this, SplashActivity.class);
PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, notificationIntent, PendingIntent.FLAG_UPDATE_CURRENT);
NotificationCompat.Builder builder = new NotificationCompat.Builder(this, NOTIFICATION_CHANNEL_ID)
.setSmallIcon(R.drawable.notification)
.setOngoing(true)
.setAutoCancel(true)
.setContentIntent(pendingIntent);
if (Build.VERSION.SDK_INT >= 26) {
NotificationChannel channel = new NotificationChannel(NOTIFICATION_CHANNEL_ID, NOTIFICATION_CHANNEL_NAME, NotificationManager.IMPORTANCE_LOW);
channel.setDescription(NOTIFICATION_CHANNEL_DESC);
channel.setSound(null, null);
NotificationManager notificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
if (notificationManager != null) {
notificationManager.createNotificationChannel(channel);
}
}
Notification notification = builder.build();
startForeground(NOTIFICATION_ID, notification);
}
#Override
public void onDestroy() {
super.onDestroy();
removeNotification(NOTIFICATION_ID);
// ....
}
#Override
public IBinder onBind(Intent intent) {
return null;
}
private void removeNotification(int notificationId) {
NotificationManager notificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
if (notificationManager != null) {
notificationManager.cancel(notificationId);
}
}
}
Utils you may need
class ServiceUtils {
/**
* #param service: Service to run
*/
fun startService(context: Context, service: Class<out Service>) {
val serviceIntent = Intent(context, service)
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
context.startForegroundService(serviceIntent)
} else {
context.startService(serviceIntent)
}
}
/**
* #return True: if the service is running
*/
fun isServiceRunning(context: Context, serviceClass: Class<*>): Boolean {
val manager = context.getSystemService(Context.ACTIVITY_SERVICE) as ActivityManager
for (service in manager.getRunningServices(Integer.MAX_VALUE)) {
if (serviceClass.name == service.service.className) {
return true
}
}
return false
}
}

Open a different activity other than MainActivity when clicking Firebase Notification

In my application i want open custom activity (not MainActivity) and putExtra to this activity when click on Firebase notification.
I write below codes, but when click on notification open MainActivity, But i want open my another activity (AuctionDetailActivity).
My NotificationManager class :
public class MyNotificationManager {
private Context mCtx;
private Uri soundUri;
private static MyNotificationManager mInstance;
public MyNotificationManager(Context context) {
mCtx = context;
}
public static synchronized MyNotificationManager getInstance(Context context) {
if (mInstance == null) {
mInstance = new MyNotificationManager(context);
}
return mInstance;
}
public void displayNotification(String title, String body) {
soundUri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
Intent intent = new Intent(mCtx, MainActivity.class);
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_SINGLE_TOP | Intent.FLAG_ACTIVITY_CLEAR_TOP);
intent.putExtra("fcm_notification", "Y");
PendingIntent pendingIntent = PendingIntent.getActivity(mCtx, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT);
NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(mCtx, Constants.NOTIF_CHANNEL_ID)
.setSmallIcon(R.mipmap.ic_launcher)
.setContentTitle(title)
.setSound(soundUri)
.setAutoCancel(true)
.setVibrate(new long[]{100, 200, 300, 400, 500, 400, 300, 200, 400})
.setContentText(body)
.setContentIntent(pendingIntent);
NotificationManager mNotifyMgr = (NotificationManager) mCtx.getSystemService(NOTIFICATION_SERVICE);
if (mNotifyMgr != null) {
mNotifyMgr.notify(1, mBuilder.build());
}
}
}
And MyFirebaseMessagingService class :
public class MyFirebaseMessagingService extends FirebaseMessagingService {
#Override
public void onMessageReceived(RemoteMessage remoteMessage) {
showNotify(remoteMessage.getFrom(), remoteMessage.getNotification().getBody());
}
private void showNotify(String title, String body) {
MyNotificationManager myNotificationManager = new MyNotificationManager(getApplicationContext());
//myNotificationManager.displayNotification(title, body);
myNotificationManager.displayNotification(title, body);
}
}
MainActivity codes:
#Override
protected void onResume() {
super.onResume();
String fcm_notification = getIntent().getStringExtra("fcm_notification");
Log.d("FireBaseIntentLog", " FCM : " + fcm_notification);
if (getIntent().getExtras() != null) {
for (String key : getIntent().getExtras().keySet()) {
String value = getIntent().getExtras().getString(key);
Log.d("FireBaseIntentLog", "Key: " + key + " Value: " + value + " FCM : " + fcm_notification);
}
}
}
How can i fix it?

If you are sending the notification from Firebase console or inside the notification field using FCM API, the app behaves in two ways -
If your app is in foreground, the method onMessageReceived of your FCM service class will be called.
If your app is in background, nothing will happen inside your FCM service class. Rather, the notification will be handled internally by the FCM library itself and the notification with launcher activity in the intent will be shown.
And if you use FCM API to send notification and use the data field, the library does nothing itself and instead calls the method onMessageReceived regardless of whether your app is in foreground or background.
So in order to solve your issue, you can use one of the following two solutions:
Use FCM API to send notifications and use the data field instead of the notification field. Check the documentation to read more about FCM API.
In your launcher (main) activity, check for intent inside onCreate and if it is coming from notification, read the extras, finish the main activity and open your required activity.
Example for second case:
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
if (checkIntent()) return;
// other code.
}
#Override
protected void onNewIntent(Intent intent) {
super.onNewIntent(intent);
checkIntent();
}
private boolean checkIntent() {
// to receive the value, send the value as custom data from Firebase console.
String value = getIntent().getStringExtra("your_key");
if (value == null) return false;
if (value.equals("something")) {
// open one activity.
} else if (value.equals("another_thing")) {
// open another activity.
}
finish();
return true;
}

Change this below line
Intent intent = new Intent(click_action);
to this
Intent intent = new Intent(getActivity(), YourClass.class);

You just need modify in sendNotification function
public void sendNotification(String messageBody, String messageTitle, int user_id, String click_action) {
Intent intent = new Intent(mCtx, AuctionDetailActivity.class); // Need modify this line
intent.putExtra(Extras.bidID.name(), user_id);
PendingIntent pendingIntent = PendingIntent.getActivity(mCtx, 0, intent,
PendingIntent.FLAG_ONE_SHOT);
Uri defaultSoundUri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(mCtx, Constants.NOTIF_CHANNEL_ID);
notificationBuilder.setSmallIcon(R.mipmap.ic_launcher)
.setContentTitle(messageTitle)
.setContentText(messageBody)
.setAutoCancel(true)
.setSound(defaultSoundUri)
.setContentIntent(pendingIntent);
NotificationManager notificationManager = (NotificationManager) mCtx.getSystemService(Context.NOTIFICATION_SERVICE);
notificationManager.notify(0, notificationBuilder.build());
}

Change your MyFirebaseMessagingService class as shown below replace OtherApp.class with your activity name
public class MyFirebaseMessagingService extends FirebaseMessagingService {
#Override
public void onMessageReceived(RemoteMessage remoteMessage) {
Intent intent=new Intent(this,OtherApp.class);
intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
PendingIntent pendingIntent = PendingIntent.getActivity(this,0,intent,PendingIntent.FLAG_ONE_SHOT);//newbg PendingIntent.getActivity(this,0,intent,PendingIntent.FLAG_ONE_SHOT);
NotificationCompat.Builder notificationBuilder= new NotificationCompat.Builder(this);
notificationBuilder.setContentTitle("FCM NOTIFICATION"); notificationBuilder.setContentText(remoteMessage.getNotification().getBody());
notificationBuilder.setAutoCancel(true);
notificationBuilder.setSmallIcon(R.mipmap.ic_launcher);
notificationBuilder.setContentIntent(pendingIntent);
NotificationManager notificationManager =(NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
notificationManager.notify(0,notificationBuilder.build());
}
}

Get multiple GCM messages

This class won't to handle multiple GCM messages and show them on notification bar,currently handle only one, how can make it to handle multiple messages?
public class GCMIntentService extends GcmListenerService {
private static final String TAG = "GCMIntentService";
int notifyid = 0;
#Override
public void onMessageReceived(String from, Bundle data) {
String message = data.getString("message");
Log.d(TAG, "from:" + from);
Log.d(TAG, "message:" + message);
sendNotification(message);
}
private void sendNotification(String message) {
Intent intent = new Intent(this, MainActivity.class);
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
PendingIntent pendingIntent = PendingIntent.getActivity(this, notifyid, intent, PendingIntent.FLAG_ONE_SHOT);
Uri defaultSound = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
if(Build.VERSION.SDK_INT > Build.VERSION_CODES.KITKAT) {
NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(this)
.setSmallIcon(R.drawable.logo)
.setContentTitle("New Messsage")
.setContentText(message)
.setAutoCancel(true)
.setSound(defaultSound)
.setContentIntent(pendingIntent);
int numMessages = 0;
notificationBuilder.setContentText(message).setNumber(++numMessages);
NotificationManager notificationManager = (NotificationManager)getSystemService(Context.NOTIFICATION_SERVICE);
notificationManager.notify(notifyid, notificationBuilder.build());
}
}
}

From the documentation:
public void notify (int id, Notification notification)
Post a notification to be shown in the status bar. If a notification with the same id has already been posted by your application and has not yet been canceled, it will be replaced by the updated information.
notifyid never appears to change in the code you've posted, which is why you only see a single notification.