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法律研究如何在 Android 中接收推送通知後開啟一個活動？
此示例演示如何在 Android 中接收推送通知後開啟一個活動
步驟 1 − 在 Android Studio 中新建一個專案，進入檔案 ⇒ 新建專案，並填寫所有必要資訊來建立一個新專案。
步驟 2 − 將以下程式碼新增到 src/MyFirebaseMessagingService.java 中
package app.tutorialspoint.com.notifyme ; import android.app.NotificationChannel ; import android.app.NotificationManager ; import android.app.PendingIntent ; import android.content.Context ; import android.content.Intent ; import android.support.v4.app.NotificationCompat ; import com.google.firebase.messaging.FirebaseMessagingService ; import com.google.firebase.messaging.RemoteMessage ; public class MyFirebaseMessagingService extends FirebaseMessagingService { public static final String NOTIFICATION_CHANNEL_ID = "10001" ; private final static String default_notification_channel_id = "default" ; @Override public void onNewToken (String s) { super .onNewToken(s) ; } @Override public void onMessageReceived (RemoteMessage remoteMessage) { super .onMessageReceived(remoteMessage) ; Intent notificationIntent = new Intent(getApplicationContext() , MainActivity. class ) ; notificationIntent.putExtra( "NotificationMessage" , "I am from Notification" ) ; notificationIntent.addCategory(Intent. CATEGORY_LAUNCHER ) ; notificationIntent.setAction(Intent. ACTION_MAIN ) ; notificationIntent.setFlags(Intent. FLAG_ACTIVITY_CLEAR_TOP | Intent. FLAG_ACTIVITY_SINGLE_TOP ) ; PendingIntent resultIntent = PendingIntent. getActivity (getApplicationContext() , 0 , notificationIntent , 0 ) ; NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(getApplicationContext() , default_notification_channel_id ) .setSmallIcon(R.drawable. ic_launcher_foreground ) .setContentTitle( "Test" ) .setContentText( "Hello! This is my first push notification" ) .setContentIntent(resultIntent) ; NotificationManager mNotificationManager = (NotificationManager) getSystemService(Context. NOTIFICATION_SERVICE ) ; if (android.os.Build.VERSION. SDK_INT >= android.os.Build.VERSION_CODES. O ) { int importance = NotificationManager. IMPORTANCE_HIGH ; NotificationChannel notificationChannel = new NotificationChannel( NOTIFICATION_CHANNEL_ID , "NOTIFICATION_CHANNEL_NAME" , importance) ; mBuilder.setChannelId( NOTIFICATION_CHANNEL_ID ) ; assert mNotificationManager != null; mNotificationManager.createNotificationChannel(notificationChannel) ; } assert mNotificationManager != null; mNotificationManager.notify(( int ) System. currentTimeMillis () , mBuilder.build()) ; } }
單擊 此處 下載專案程式碼
更新時間：2019-07-30
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