android - 通知中的 Intent 不起作用

Question

我的通知是一项服务 (service.java)，该服务所做的是在首选项屏幕中的复选框首选项被选中时启动电池电量通知。现在不起作用的是在 中输入的 Intent MainActivity 点击通知。这是代码

if(mprefs.getBoolean("notification_a", false)==true){
    notificationBuilder = new NotificationCompat.Builder(context);

    notificationBuilder.setOngoing(true);
    notificationBuilder.setContentTitle("Battery Stats Informations");
    notificationBuilder.setContentText("Carica residua: " +level+"%" + " " + "Temperatura: " +temperature+ "°C");
    //notificationBuilder.setTicker("Informazioni batteria");
    notificationBuilder.setWhen(System.currentTimeMillis());
    notificationBuilder.setSmallIcon(R.drawable.icon_small_not);
    Intent notificationIntent = new Intent(context, MainActivity.class);
    PendingIntent contentIntent = PendingIntent.getBroadcast(context, 0, notificationIntent, 0);
    notificationBuilder.setContentIntent(contentIntent);

    notificationIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_SINGLE_TOP);

    Notification not=notificationBuilder.build();

    mNotificationManager.notify(SIMPLE_NOTIFICATION_ID,not);
} else {
    mNotificationManager.cancelAll();
}

Intent Intent notificationIntent = new Intent(context, MainActivity.class 不起作用。有什么帮助吗？

Answer 1

如果您打算在单击通知时启动 Activity :使用:

PendingIntent contentIntent = PendingIntent.getActivity(context, 0, notificationIntent, 0);

Retrieve a PendingIntent that will start a new activity, like calling Context.startActivity(Intent).

代替:

PendingIntent contentIntent = PendingIntent.getBroadcast(context, 0, notificationIntent, 0);

Retrieve a PendingIntent that will perform a broadcast, like calling Context.sendBroadcast().