我對 Android 開發還很陌生。當應用程序處于后臺時，我已經能夠收到彈出通知。當我點擊它時，它成功加載了應用程序備份。但是，我想從頁面加載警報，但僅當它從通知點擊打開時才加載。下面是生成通知的代碼。任何幫助，將不勝感激。private void getNotificationForPasswordChange() { NotificationManager mNotificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE); if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) { CharSequence name = "Hello";// The user-visible name of the channel. int importance = NotificationManager.IMPORTANCE_HIGH; NotificationChannel mChannel = new NotificationChannel(CHANNEL_ID, name, importance); if (mNotificationManager != null) mNotificationManager.createNotificationChannel(mChannel); } Bitmap icon = BitmapFactory.decodeResource(getResources(), R.mipmap.ic_launcher); Intent i=new Intent(this, MainActivity.class); i.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP); i.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); i.addFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP); PendingIntent mainIntent = PendingIntent.getActivity(this, 0, i, PendingIntent.FLAG_UPDATE_CURRENT); Notification notification = new NotificationCompat.Builder(this, CHANNEL_ID) .setContentTitle("Pronto Tracker") .setTicker("Pronto Tracker") .setContentText("Cannot connect to server. Location is not being updated.") .setSmallIcon(R.mipmap.ic_pronto_logo) .setLargeIcon(Bitmap.createScaledBitmap(icon, 128, 128, false)) .setOngoing(true).setContentIntent(mainIntent). build(); mNotificationManager.notify(Constants.PASSWORD_CHANGE_NOTIFICATION_ID, notification);}
2 回答
婷婷同學_
TA貢獻1844條經驗 獲得超8個贊
您可以傳遞帶有通知 PendingIntent 的警報消息。在 PendingIntent .putExtra() 中添加要顯示為警報的消息或值，并在 PendingIntent 中指定要以對話框或任何形式顯示警報的活動。
Intent intent = new Intent(Application.getAppContext(), MainActivity.class);
intent.putExtra("is_notification", true);
intent.putExtra("alert_message", "Hello World!");
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
PendingIntent lowIntent = PendingIntent.getActivity(mContext, 100, intent, PendingIntent.FLAG_CANCEL_CURRENT);
之后將 PendingIntent 添加到您的通知中。您需要做的第二件事是在用戶點擊通知時從 Intent 獲取數據。在您的 MainActivity 中添加以下代碼以從 Intent 獲取數據：-
if (getIntent() != null) {
String message = getIntent().getStringExtra("alert_message");
boolean isNotification = getIntent().getBooleanExtra("is_notification", false);
if(is_notification){
// show alert
}
}
當年話下
TA貢獻1890條經驗 獲得超9個贊
您應該在 MainActivity 上使用 onCreate 函數 添加此代碼來分解您的意圖： Intent receivedIntent = getIntent();
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