每隔一段时间用android发送通知

Question

我正在尝试设置一个通知，使其在某个时间间隔后出现。我本以为这能起作用，但在我的手机上运行代码时，除了在控制台上打印接收器外，似乎什么都没有发生，我似乎不知道为什么。任何帮助都将不胜感激。

这是用于设置警报的代码。

Calendar calendar = Calendar.getInstance();
calendar.set(Calendar.SECOND, 10);
Intent intent = new Intent(getApplicationContext(), NotificationReciever.class);
PendingIntent pendingIntent = PendingIntent.getBroadcast(getApplicationContext(), 100, intent, PendingIntent.FLAG_UPDATE_CURRENT);
AlarmManager alarmManager = (AlarmManager) getSystemService(ALARM_SERVICE);
alarmManager.setRepeating(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(), AlarmManager.INTERVAL_FIFTEEN_MINUTES, pendingIn

这是notification receiver类

public class NotificationReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
    System.out.println("at reciever");
    NotificationManager notificationManager = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);

    Intent repeatingIntent = new Intent(context, LoginActivity.class);
    repeatingIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);

    PendingIntent pendingIntent = PendingIntent.getActivity(context, 100, repeatingIntent, PendingIntent.FLAG_UPDATE_CURRENT);

    NotificationCompat.Builder builder = new NotificationCompat.Builder(context)
            .setContentIntent(pendingIntent)
            .setContentTitle("Please Leave at the cage")
            .setContentText("It almost 5")
            .setAutoCancel(true);

    notificationManager.notify(100, builder.build());
}
}

以下是相关清单行，接收者Android：name=“.notificationreceiver”使用权限Android：name=”com.android.alarm.permission.SET\u alarm“

Answer 1

基本上，您需要为每个通知设置一个图标。

NotificationCompat.Builder builder = new NotificationCompat.Builder(context)
            .setContentIntent(pendingIntent)
            .setContentTitle("Please Leave at the cage")
            .setSmallIcon(R.drawable.crosshair); //crosshair is the icon choice in this example
            .setContentText("It almost 5")
            .setAutoCancel(true);