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Question

我正在尝试将通知设置为在特定时间间隔后显示。我希望这可以工作，但是当我在手机上运行代码而不是将接收器打印到控制台时似乎没有发生任何事情，我似乎无法找出原因。任何帮助将不胜感激。

以下是用于设置闹钟的代码。

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

这是通知接收器类

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());
}
}

以下是相关的清单行
     接收器android：name =“。NotificationReciever”      uses-permission android：name =“com.android.alarm.permission.SET_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);