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Answer : PRIORITY_MAX This constant was deprecated in API level 26. use IMPORTANCE_HIGH instead. PRIORITY_MAX int PRIORITY_MAX This constant was deprecated in API level 26. use IMPORTANCE_HIGH instead. Highest priority, for your application's most important items that require the user's prompt attention or input. Constant Value: 2 (0x00000002) // create ios channel NotificationChannel iosChannel = new NotificationChannel(IOS_CHANNEL_ID, IOS_CHANNEL_NAME, NotificationManager.IMPORTANCE_HIGH); iosChannel.enableLights(true); iosChannel.enableVibration(true); iosChannel.setLightColor(Color.GRAY); iosChannel.setLockscreenVisibility(Notification.VISIBILITY_PUBLIC); getManager().createNotificationChannel(iosChannel); https://developer.android.com/reference/android/app/Notification.html#PRIORITY_MIN In android O there was introduction of Notification channels. In particular you define Channel with constru...

Answer : below code will help you: String CHANNEL_ID="1234"; Uri soundUri = Uri.parse(ContentResolver.SCHEME_ANDROID_RESOURCE + "://"+ getApplicationContext().getPackageName() + "/" + R.raw.mysound); NotificationManager mNotificationManager = (NotificationManager) getApplicationContext().getSystemService(Context.NOTIFICATION_SERVICE); //For API 26+ you need to put some additional code like below: NotificationChannel mChannel; if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) { mChannel = new NotificationChannel(CHANNEL_ID, Utils.CHANNEL_NAME, NotificationManager.IMPORTANCE_HIGH); mChannel.setLightColor(Color.GRAY); mChannel.enableLights(true); mChannel.setDescription(Utils.CHANNEL_SIREN_DESCRIPTION); AudioAttributes audioAttributes = new AudioAttributes.Builder() .setContentType(AudioAttributes.CONTENT_TYPE_SONIFICATIO...

Answer : Found a very easy way to do this. Open http://phpfiddle.org/ Paste following php script in box. In php script set API_ACCESS_KEY, set device ids separated by coma. Press F9 or click Run. Have fun ;) <?php // API access key from Google API's Console define( 'API_ACCESS_KEY', 'YOUR-API-ACCESS-KEY-GOES-HERE' ); $registrationIds = array("YOUR DEVICE IDS WILL GO HERE" ); // prep the bundle $msg = array ( 'message' => 'here is a message. message', 'title' => 'This is a title. title', 'subtitle' => 'This is a subtitle. subtitle', 'tickerText' => 'Ticker text here...Ticker text here...Ticker text here', 'vibrate' => 1, 'sound' => 1 ); $fields = array ( 'registration_ids' => $registrationIds, 'data' => $msg ); $headers = array ( 'Autho...