android notification listening service

Obtain some messages from other applications by listening to messages in the notification bar

1. Create a class that inherits NotificationListenerService

class NotificationListener : NotificationListenerService() {
    
    
    private lateinit var mListener: messageListener

    companion object {
    
    
        private const val TAG = "NotificationListener"
        private const val LISTEN_CALL = "com.android.incallui"
        private const val LISTEN_TIM = "com.tencent.tim"
    }

    override fun onNotificationPosted(sbn: StatusBarNotification?) {
    
    
        super.onNotificationPosted(sbn)
        when (sbn?.packageName) {
    
    
            LISTEN_CALL -> Log.d(TAG, "收到电话消息")
            LISTEN_TIM -> Log.d(TAG, "收到TIM消息")
            else -> Log.d(TAG, "收到未知类型消息")
        }
    }

    override fun onNotificationRemoved(sbn: StatusBarNotification?) {
    
    
        super.onNotificationRemoved(sbn)
        when (sbn?.packageName) {
    
    
            LISTEN_CALL -> Log.d(TAG, "移除电话消息")
            LISTEN_TIM -> Log.d(TAG, "移除TIM消息")
            else -> Log.d(TAG, "移除未知类型消息")
        }
    }

    override fun onListenerConnected() {
    
    
        super.onListenerConnected()
        Log.d(TAG, "建立监听连接")
    }

    override fun onListenerDisconnected() {
    
    
    	super.onListenerDisconnected()
        Log.d(TAG, "监听连接断开")
    }
}

AndroidManifest.xml：

<service
    android:name=".NotificationListener"
    android:enabled="true"
    android:exported="true"
    android:permission="android.permission.BIND_NOTIFICATION_LISTENER_SERVICE">
    <intent-filter>
        <action android:name="android.service.notification.NotificationListenerService" />
    </intent-filter>
</service>

2. Enable NotificationService

try {
    
    
    val intent = Intent("android.settings.ACTION_NOTIFICATION_LISTENER_SETTINGS")
    intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK)
    startActivity(intent)
} catch (e: Exception) {
    
    
    e.printStackTrace()
}

3. Obtain standard text information

 if (sbn.getNotification().tickerText != null) {
    
    
     Log.d(TAG, sbn.getNotification().tickerText.toString())//标题和内容一起程序，eg：小明：今天去打球吗？
 }
 //或
val extras = sbn.notification.extras
if (extras != null) {
    
    
   // 获取通知标题
   val title = extras.getString(Notification.EXTRA_TITLE, "")//eg：小明
   Log.d(TAG, title)
   // 获取通知内容
   val content = extras.getString(Notification.EXTRA_TEXT, "")//eg：今天去打球吗？
   Log.d(TAG,content)
}