CODEWITHSUNDEEP
androidnotificationsbroadcastreceiver
Adham
Adham

Reputation: 64844

How to read all the coming notifications in android

How to read all the coming notifications in android. Is it possible to use the broadcast receiver to listen the incoming notifications and the ability to read the notifications information.

Upvotes: 46

Views: 93220

Answers (3)

shubhamgarg1
shubhamgarg1

Reputation: 1995

Android provides android.permission.BIND_NOTIFICATION_LISTENER_SERVICE which you can use to get the notification information.

In your AndroidManifest.xml, declare a service like this:

<service android:name=".AppNotificationListenerService"
    android:label="@string/service_name"
    android:exported="false"
    android:permission="android.permission.BIND_NOTIFICATION_LISTENER_SERVICE">
    <intent-filter>
        <action android:name="android.service.notification.NotificationListenerService" />
    </intent-filter>
</service>

Create a class named AppNotificationListenerService and extend it from NotificationListenerService

class AppNotificationListenerService: NotificationListenerService()
{
    override fun onNotificationPosted(sbn: StatusBarNotification?)
    {
        super.onNotificationPosted(sbn)
        // Query information from sbn using methods like:
        // sbn?.notification.extras.get(Notification.EXTRA_TITLE)
        // Some other keys include EXTRA_TEXT, EXTRA_SUB_TEXT
    }
}

You also need to make sure that your application has permission to see all notifications. For that, you can use the below code:

val componentName = ComponentName(packageName, AppNotificationListenerService::class.java.getName())
val notificationManager =  getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager
if (!notificationManager.isNotificationListenerAccessGranted(componentName))
{
    val notificationAccessSettings: Intent =
                Intent(Intent(Settings.ACTION_NOTIFICATION_LISTENER_DETAIL_SETTINGS))

    notificationAccessSettings.putExtra(
                Settings.EXTRA_NOTIFICATION_LISTENER_COMPONENT_NAME,
                componentName.flattenToString()
            )

    startActivity(notificationAccessSettings)
}
else
{
    Log.d(LOGGER_TAG, "App has notification access")
}

Upvotes: 1

Rohit269
Rohit269

Reputation: 117

You need to do like this in onNotificationPosted in order to get all messages

if ((Build.VERSION.SDK_INT >= Build.VERSION_CODES.N)){
        Parcelable b[] = (Parcelable[]) extras.get(Notification.EXTRA_MESSAGES);

        if(b != null){

            for (Parcelable tmp : b){

                Bundle msgBundle = (Bundle) tmp;
                content = content + msgBundle.getString("text") + "\n";

            /*Set<String> io = msgBundle.keySet(); // To get the keys available for this bundle*/

            }
        }
    }

Upvotes: 2

Monban
Monban

Reputation: 546

First you must declare your intent to receive notifications in your manifest, so that you can get the android.permission.BIND_NOTIFICATION_LISTENER_SERVICE permission.

AndroidManifest.xml:

<service android:name=".NotificationListener"
         android:label="@string/service_name"
         android:permission="android.permission.BIND_NOTIFICATION_LISTENER_SERVICE">
    <intent-filter>
        <action android:name="android.service.notification.NotificationListenerService" />
    </intent-filter>
</service>

Then create a NotificationListenerService class and override the onNotificationPosted function.

For more information, read the developer reference here: https://developer.android.com/reference/android/service/notification/NotificationListenerService.html

Also look at this simple example application for implementation guidance: https://github.com/kpbird/NotificationListenerService-Example/

Upvotes: 29

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