Develop Reference

Android : Firebase Notification - small icon not changed, its showing app icon by default

Firebase notification : App icon shown as notification icon by default even set other icon as setSmallIcon()
In manifest
<application
android:name=".ApplicationRoot"
android:allowBackup="false"
android:icon="#drawable/ic_stat_name"
android:label="#string/app_name"
android:largeHeap="true"
android:requestLegacyExternalStorage="true"
android:supportsRtl="true"
android:usesCleartextTraffic="true"
tools:ignore="AllowBackup,GoogleAppIndexingWarning"
tools:replace="android:allowBackup,android:icon"
tools:targetApi="m">
....
<meta-data android:name="com.google.firebase.messaging.default_notification_icon"
android:resource="#drawable/ic_stat_name" />
<meta-data
android:name="com.google.firebase.messaging.default_notification_color"
android:resource="#color/white" />
in coding
var notificationBuilder = NotificationCompat.Builder(this, channelId)
.setSmallIcon(R.drawable.ic_stat_name)
.setContentTitle(title)
.setContentText(messageBody)
.setPriority(NotificationCompat.PRIORITY_DEFAULT)
Instead of showing R.drawable.ic_stat_name am getting my app logo in the notification.

Flutter app does not come to foreground when tapped on native android background service notification

I am new to learning flutter. My flutter app has a native android background service on kotlin where I have a socket running and whenever the socket listens to something I generate a notification using NotificationCompat.Builder.
But I am unable to bring the Flutter app back to foreground when ever the user taps on the notification.
I have tried creating a pendingintent and passing it to notificationbuilder setContentIntent() but nothing happens on tap.
shownotification function on Native background service:
fun shownotification (){
packageNamer = this.getPackageName()
launchIntent = this.getPackageManager().getLaunchIntentForPackage(packageName)
var className = launchIntent?.getComponent()!!.className.javaClass
intent.action = "SELECT_NOTIFICATION"
intent.setClass(this,className)
pendingIntent = PendingIntent.getActivity(this, 1, intent, PendingIntent.FLAG_UPDATE_CURRENT)
var builder = NotificationCompat.Builder(this, "notifications")
.setOngoing(true)
.setContentIntent(pendingIntent)
.setFullScreenIntent(pendingIntent, true)
.setSmallIcon(R.drawable.common_google_signin_btn_icon_dark)
.setContentTitle("My notification")
.setContentText("Much longer text that cannot fit one line...")
.setStyle(NotificationCompat.BigTextStyle()
.bigText("Much longer text that cannot fit one line..."))
.setPriority(NotificationCompat.PRIORITY_HIGH)
manager?.notify(456,builder.build())
}
AndroidManifest.xml file:
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.FOREGROUND_SERVICE"/>
<!-- io.flutter.app.FlutterApplication is an android.app.Application that
calls FlutterMain.startInitialization(this); in its onCreate method.
In most cases you can leave this as-is, but you if you want to provide
additional functionality it is fine to subclass or reimplement
FlutterApplication and put your custom class here. -->
<application
android:name=".MyApplication"
android:label="bizzyb_demo"
android:icon="#mipmap/ic_launcher">
<service android:name=".MyService" android:exported="true" android:enabled="true"/>
<activity
android:name=".MainActivity"
android:launchMode="singleTop"
android:theme="#style/LaunchTheme"
android:configChanges="orientation|keyboardHidden|keyboard|screenSize|locale|layoutDirection|fontScale|screenLayout|density|uiMode"
android:hardwareAccelerated="true"
android:windowSoftInputMode="adjustResize">
<!-- This keeps the window background of the activity showing
until Flutter renders its first frame. It can be removed if
there is no splash screen (such as the default splash screen
defined in #style/LaunchTheme). -->
<meta-data
android:name="io.flutter.app.android.SplashScreenUntilFirstFrame"
android:value="true" />
<intent-filter>
<action android:name="android.intent.action.MAIN"/>
<category android:name="android.intent.category.LAUNCHER"/>
</intent-filter>
<intent-filter>
<action android:name="FLUTTER_NOTIFICATION_CLICK" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
</application>
What am I doing wrong here. I believe I am missing something very obvious here as I am new to mobile apps development.
Your expert feedbacks will be appreciated.
Thanks

You need to include click_action: FLUTTER_NOTIFICATION_CLICK as a "Custom data" key-value-pair in the notification payload.
Bundle bundle = new Bundle();
bundle.putString(Constants.EXAM_ID,String.valueOf(lectureDownloadStatus.getExamId()));
var builder = NotificationCompat.Builder(this, "notifications")
.setOngoing(true)
.setContentIntent(pendingIntent)
.setFullScreenIntent(pendingIntent, true)
.setSmallIcon(R.drawable.common_google_signin_btn_icon_dark)
.setContentTitle("My notification")
.setContentText("Much longer text that cannot fit one line...")
.setStyle(NotificationCompat.BigTextStyle()
.bigText("Much longer text that cannot fit one line..."))
.setPriority(NotificationCompat.PRIORITY_HIGH)
.setExtras(bundle) // Set the bundle

Missing default Notification Channel metadata in AndroidManifest in Flutter

I am using firebase_messaging: ^5.0.1 package to achieve push notifications, everything is working fine in IOS whereas coming to the android when my mobile application running background I am receiving a notification but it is not navigating to the respective screens, it just opens the default screen. How to achieve navigation to that particular screen.
PS: I implemented click_action functionality that's the reason it's working fine in iOS but Android it shows the below message
W/FirebaseMessaging( 8260): Missing Default Notification Channel metadata in AndroidManifest. Default value will be used.
Here is my AndroidManifest:
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.check">
<!-- io.flutter.app.FlutterApplication is an android.app.Application that
calls FlutterMain.startInitialization(this); in its onCreate method.
In most cases you can leave this as-is, but you if you want to provide
additional functionality it is fine to subclass or reimplement
FlutterApplication and put your custom class here. -->
<application
android:name="io.flutter.app.FlutterApplication"
android:label="Cargill FC"
android:icon="#mipmap/ic_launcher">
<activity
android:name=".MainActivity"
android:launchMode="singleTop"
android:theme="#style/LaunchTheme"
android:configChanges="orientation|keyboardHidden|keyboard|screenSize|locale|layoutDirection|fontScale|screenLayout|density|uiMode"
android:hardwareAccelerated="true"
android:allowBackup="false"
android:fullBackupContent="false"
android:windowSoftInputMode="adjustResize">
<!-- This keeps the window background of the activity showing
until Flutter renders its first frame. It can be removed if
there is no splash screen (such as the default splash screen
defined in #style/LaunchTheme). -->
<meta-data
android:name="io.flutter.app.android.SplashScreenUntilFirstFrame"
android:value="true" />
<intent-filter>
<action android:name="android.intent.action.MAIN"/>
<category android:name="android.intent.category.LAUNCHER"/>
</intent-filter>
<intent-filter>
<action android:name="FLUTTER_NOTIFICATION_CLICK" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
Push notificatio code:
#override
void initState() {
super.initState();
tabController = new TabController(length: 2, vsync: this);
_firebaseMessaging.configure(
onMessage: (Map<String, dynamic> message) async {
onFirebaseMessage(message);
},
onLaunch: (Map<String, dynamic> message) async {
print("onLaunch: $message");
},
onResume: (Map<String, dynamic> message) async {
print("onResume: $message");
},
);
_firebaseMessaging.requestNotificationPermissions(const IosNotificationSettings(sound: true, badge: true, alert: true));
_firebaseMessaging.onIosSettingsRegistered.listen((IosNotificationSettings settings) {
print("Settings registered: $settings");
});
_firebaseMessaging.getToken().then(registerFirebaseTokenForUser);
}
Here onMessage is the only thing working perfectly in Android. I want to achieve the same when it is running background.

For those who are not able to find "string.xml", you can find it under: android>app>src>main>res>values. It is not the same as styles.xml. If you do not have one yet, you can create one:
Right click "values" folder,
Click New/Values Resource File
Copy, and paste the following text:
<?xml version="1.0" encoding="utf-8"?>
<resources>
<string name="default_notification_channel_id" translatable="false">fcm_default_channel</string>
</resources>

Maksim has a pretty solid answer here including links to the official docs. You need to add a the following meta-data tag in you Manifest:
<meta-data
android:name="com.google.firebase.messaging.default_notification_channel_id"
android:value="#string/default_notification_channel_id"/>
And in string.xml you can declare default_notification_channel_id in the following way:
<string name=“default_notification_channel_id”>Channel ID</string>
Then you must provide an attribute with that specific id when sending push notifications.
EDIT
It is possible to have multiple meta-data tags in your AndroidManifest.xml:
<meta-data
android:name="io.flutter.app.android.SplashScreenUntilFirstFrame"
android:value="true" />
<meta-data
android:name="com.google.firebase.messaging.default_notification_channel_id"
android:value="#string/default_notification_channel_id"/>

Adding FLUTTER_NOTIFICATION_CLICK is required to be sent, for onResume and onLunch to be executed.
{
"notification": {...},
"click_action": "FLUTTER_NOTIFICATION_CLICK"
}
For my golang server, this meant adding the AndroidConfig
message := &messaging.Message{
Topic: topic,
Notification: &messaging.Notification{/* */}
Data: data,
APNS: &messaging.APNSConfig{/* */}
Android: &messaging.AndroidConfig{
Notification: &messaging.AndroidNotification{
ClickAction: "FLUTTER_NOTIFICATION_CLICK",
},
},
}

1- At first, add this meta code after </activity> tag in AndroidManifest.xml which located in path <flutter project path>/android/app/src/main/AndroidManifest.xml
<meta-data
android:name="com.google.firebase.messaging.default_notification_channel_id"
android:value="#string/notification_channel_id" />
Note: If you set this meta inside <activity> the code will not work.
2- Modify file (or create new file if not exists) in this path <flutter project path>/android/app/src/main/res/values/string.xml to be like this:
<?xml version="1.0" encoding="utf-8"?>
<resources>
<string name="default_notification_channel_id" translatable="false">fcm_default_channel</string>
</resources>
This will solve the problem Missing Default Notification Channel metadata in AndroidManifest. Default value will be used.
But after that, you need to create this channel in Android, to do that go to file <flutter project path>//android/app/src/main/kotlin/com/examble/project_name/Application.kt and add this function:
private fun createChannel(){
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
// Create the NotificationChannel
val name = getString(R.string.default_notification_channel_id)
val channel = NotificationChannel(name, "default", NotificationManager.IMPORTANCE_HIGH)
val notificationManager: NotificationManager = getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager
notificationManager.createNotificationChannel(channel)
}
}
Then call it from onCreate() function:
override fun onCreate() {
super.onCreate()
createChannel()
.........
}

Adding 'click_action': 'FLUTTER_NOTIFICATION_CLICK' to my notification's data solved this for me

If your flutter version is greater than 1.12 you don't need to create any file like Application.java or Application.kt just add the below meta value to you AndroidManifest file
<meta-data
android:name="com.google.firebase.messaging.default_notification_channel_id"
android:value="high_importance_channel" />
Reference: https://firebase.flutter.dev/docs/messaging/overview/

Error : Use of fullScreenIntent requires the USE_FULL_SCREEN_INTENT permission

I'm using notifications with fullscreen my code works find in Oreo and below version
But when i'm running android-Q I'm getting below exception
Use of fullScreenIntent requires the USE_FULL_SCREEN_INTENT permission
I'm using setFullScreenIntent() for notifications with fullscreen
Here is my code
NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(this, "123");
notificationBuilder.setAutoCancel(true)
.setColor(ContextCompat.getColor(this, R.color.colorAccent))
.setContentTitle(getString(R.string.app_name))
.setContentText("Test")
.setDefaults(Notification.DEFAULT_ALL)
.setWhen(System.currentTimeMillis())
.setFullScreenIntent(pendingIntent,true)
.setSmallIcon(R.drawable.ic_launcher_background)
.setAutoCancel(true);
mNotificationManager.notify(1000, notificationBuilder.build());

Here is the answer
Now wee need to add <uses-permission android:name="android.permission.USE_FULL_SCREEN_INTENT" /> permission in manifest file
Permissions changes for fullscreen intents
Apps that target Android Q or higher and use notifications with fullscreen intents must request the USE_FULL_SCREEN_INTENT permission in their app's manifest file. This is a normal permission, so the system automatically grants it to the requesting app
SAMPLE CODE
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="xxx.xxx.xxx">
<uses-permission android:name="android.permission.USE_FULL_SCREEN_INTENT" />
<application
android:allowBackup="true"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:roundIcon="#mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="#style/AppTheme">
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>

setFullScreenIntent
An intent to launch instead of posting the notification to the status bar. Only for use with extremely high-priority notifications demanding the user's immediate attention, such as an incoming phone call or alarm clock that the user has explicitly set to a particular time. If this facility is used for something else, please give the user an option to turn it off and use a normal notification, as this can be extremely disruptive.
https://developer.android.com/reference/android/app/Notification.Builder

Firebase Cloud Messaging: How to set the notification icon on android?

I am having trouble setting the notification icon on android studio.
I set up the drawable folder like so:
And I've also set the default icon in my AndroidManifest.xml file:
<meta-data
android:name="com.google.firebase.messaging.default_notification_icon"
android:resource="#drawable/notification_icon" />
And here I'm setting the icon field to notification_icon: https://developers.google.com/cloud-messaging/http-server-ref#downstream-http-messages-json (p.s. I'm aware that's GCM, but it works. I'm receiving the notification with everything besides the icon)
What am I missing? All I see is a white square inside a grey circle.
This is my backend code: Pushex.push(%{title: user.name, body: "message goes here", badge: 1, sound: "default", icon: "notification_icon"}, to: user.fcm_token, using: :gcm) (https://github.com/tuvistavie/pushex)

Fixed it... this is so stupid. Was inspired by this answer:
https://stackoverflow.com/a/28387744/1555312
I made my notification icon my app icon:
<meta-data
android:name="com.google.firebase.messaging.default_notification_icon"
android:resource="#mipmap/ic_launcher" />
And then the magic line in android/app/build.gradle...
defaultConfig {
targetSdkVersion 20 // this has to be < 21
...
}
Hope I save hours of someone else's life

With SDK 9.8.0 however, you can override the default! In your AndroidManifest.xml you can set the following fields to customise the icon and color:
<meta-data
android:name="com.google.firebase.messaging.default_notification_icon"
android:resource="#drawable/notification_icon" />
<meta-data android:name="com.google.firebase.messaging.default_notification_color"
android:resource="#color/google_blue" />
and
<manifest>
<application
android:icon="#drawable/icon"
android:label="#string/app_name">
<!-- Add your meta-data here-->
<activity
android:name=".MainActivity"
android:label="#string/app_name">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>

Check this code. It may help you.
public class MyFirebaseMessagingService extends FirebaseMessagingService {
private static final String TAG = "FCM Service";
#Override
public void onMessageReceived(RemoteMessage remoteMessage) {
Uri defaultSoundUri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
Intent intent = new Intent(getApplicationContext(), YourClass.class);
PendingIntent contentIntent = PendingIntent.getActivity(getApplicationContext(), NotificationID.getID(), intent,
PendingIntent.FLAG_UPDATE_CURRENT);
NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(getApplicationContext())
.setSmallIcon(getNotificationIcon())
.setContentTitle(remoteMessage.getData().get("title"))
.setContentText(remoteMessage.getData().get("body"))
.setAutoCancel(true)
.setSound(defaultSoundUri)
.setStyle(new NotificationCompat.BigTextStyle().bigText(remoteMessage.getData().get("body")))
.setContentIntent(contentIntent);
NotificationManager notificationManager =
(NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
notificationManager.notify(NotificationID.getID(), notificationBuilder.build());
}
private int getNotificationIcon() {
boolean useWhiteIcon = (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.LOLLIPOP);
//If the build version is higher than kitkat we need to create Silhouette icon.
return useWhiteIcon ? R.mipmap.ic_notification : R.mipmap.ic_launcher;
}
public static class NotificationID {
private static final AtomicInteger c = new AtomicInteger(0);
public static int getID() {
return c.incrementAndGet();
}
}
}
If the build version is higher than kitkat we need to create Silhouette icon. For that online tool is available
Refer:https://romannurik.github.io/AndroidAssetStudio/icons-notification.html

I am using the FCM plugin and here is what worked for me (September 2019):
In config.xml (yourapp/config.xml)
Add the following to the tag at the end
xmlns:android="http://schemas.android.com/apk/res/android"
It should look something like this now:
<widget id="com.mydomain.app" version="1.0.0" xmlns="http://www.w3.org/ns/widgets" xmlns:cdv="http://cordova.apache.org/ns/1.0" xmlns:android="http://schemas.android.com/apk/res/android">
Or simply, copy the above line, replace the value of widget id, with your own.
In the same config.xml file:
Just before the tag corresponding to , add this:
<config-file parent="/manifest/application/" target="app/src/main/AndroidManifest.xml">
<meta-data android:name="com.google.firebase.messaging.default_notification_icon" android:resource="#drawable/fcm_push_icon" />
</config-file>
Visit the following link:
Notification Icon Generator
Upload a White version (single color) of your logo on a Transparent background. If you upload a colored version, you will get a dark gray icon, which would look nasty. If you don't have a white version of your logo, get it designed. Leave the rest of the settings as they are. For the Name textbox value, enter: fcm_push_icon. Then click on the Blue colored round shaped button to download the zip file.
Unzip the zip file that you just downloaded it the above step and extract its contents to a folder. You will notice that it contains a res folder. If you open this folder, it will contain other folders with the following names:
drawable-hdpi
drawable-mdpi
drawable-xhdpi
drawable-xxhdpi
drawable-xxxhdpi
Each of those folders will contain a PNG icon by the name "fcm_push_icon.png". The only difference between the icons in those different folders is their size.
Open the following file path in your app (If it doesn't exist, create it as shown below):
yourApp/platforms/android/app/src/main/res
Simply copy all the 5 folders listed in in the point 4 above, to the location shown just above i.e. into the res folder i.e. into yourApp/platforms/android/app/src/main/res
That's it! Now just build your app. Whenever you receive a notification, you will see your app icon in the notifications (at least on Android).
If anyone has figured out how to make colored icons appear in the Android notifications, please share your solution.