java - 从一开始就立即调用第二个广播接收器？

Question

问题:- 我有两个广播接收器类。第一个在午夜被调用，它获取预定的闹钟时间，当当前时间与商店闹钟时间匹配时，第二个广播接收器被调用。但取而代之的是，当第一个广播接收器被调用时，第二个广播接收器也会在完成第一个广播接收器函数后被调用。

调用第一个广播接收器的函数:

private void setTheTimeToUpdateTables(Context context) {

    Log.i("Update table function","Yes");

    AlarmManager alarmManager=(AlarmManager) getSystemService(ALARM_SERVICE);

    Intent alarmIntent=new Intent(context,UpdateTables.class);

    PendingIntent pendingIntent=PendingIntent.getBroadcast(context,0,alarmIntent,PendingIntent.FLAG_UPDATE_CURRENT);

    alarmManager.cancel(pendingIntent);

    Calendar alarmStartTime = Calendar.getInstance();

    alarmStartTime.setTimeInMillis(System.currentTimeMillis());

    alarmStartTime.set(Calendar.HOUR_OF_DAY, 15);
    alarmStartTime.set(Calendar.MINUTE, 58);
    alarmStartTime.set(Calendar.SECOND, 0);

    System.out.println("Updating table time "+alarmStartTime);
    System.out.println("Time in millseconds "+alarmStartTime.getTimeInMillis());


    alarmManager.setInexactRepeating(AlarmManager.RTC,alarmStartTime.getTimeInMillis(),AlarmManager.INTERVAL_DAY,pendingIntent);

    Log.d("Alarm","Set for midnight");


}

//第一个广播接收器类

public class UpdateTables extends BroadcastReceiver {

    DbHelper dbHelper;
    ArrayList<ListMedicine> reminderInfo;

    @Override
    public void onReceive(Context context, Intent intent) {

        dbHelper=new DbHelper(context);
        reminderInfo=dbHelper.fetchDataFromReminderinfo();

        for (int i=0;i<reminderInfo.size();i++)
        {
            ListMedicine listMedicine=reminderInfo.get(i);

            Calendar calendar=Calendar.getInstance();

            System.out.println("Alarm Hour "+listMedicine.getReminder_hour());
            System.out.println("Alarm Minutes "+listMedicine.getReminder_min());

            calendar.set(Calendar.HOUR_OF_DAY,listMedicine.getReminder_hour());
            calendar.set(Calendar.MINUTE, listMedicine.getReminder_min());

            setAlarm(calendar,context,i);

        }


        Log.i("Service Start", CalculateDaysService.TAG);

        context.startService(new Intent(context,CalculateDaysService.class));

        //Call all the alarm here only.. for next day alarm, call from here.



        Log.i("Done","Yes");
    }


    private void setAlarm(Calendar calNow, Context context, int request_code) {

        Log.i("Inside setAlarm,","Yes");

        Intent intent = new Intent(context, AlarmReceiver.class);
        Long time=calNow.getTimeInMillis();

        System.out.println("Reminder Time is "+calNow.get(Calendar.HOUR_OF_DAY)+" "+calNow.get(Calendar.MINUTE));
        Log.i("Target",time.toString());

        //final int _id = (int) System.currentTimeMillis();
        PendingIntent pendingIntent = PendingIntent.getBroadcast(context, request_code, intent, PendingIntent.FLAG_ONE_SHOT);

        AlarmManager alarmManager = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);


        alarmManager.set(AlarmManager.RTC_WAKEUP, time, pendingIntent);
    }
}

//第二个广播接收者

public class AlarmReceiver extends BroadcastReceiver {

    @Override
    public void onReceive(Context k1, Intent k2) {
        // TODO Auto-generated method stub

        Log.i("Alarm Received","Yes");

        Calendar calendar=Calendar.getInstance();

        System.out.println("Alarm Receiver call is "+ calendar.getTime() );
        Intent i=new Intent(k1,AlertDialogActivity.class);
        i.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        k1.startActivity(i);

    }

}

list :-

<receiver android:name=".AlarmReceiver" android:enabled="true"
            android:process=":remote"/>

<receiver android:name=".UpdateTables"
            android:enabled="true"
            android:exported="true">

            <intent-filter>
                <action android:name="android.intent.action.BOOT_COMPLETED" />
            </intent-filter>

</receiver>

Answer 1

据我了解，您想在 alarmStartTime.getTimeInMillis() 时间启动接收器

     Calendar alarmStartTime = Calendar.getInstance();

  alarmStartTime.setTimeInMillis(System.currentTimeMillis());

  alarmStartTime.set(Calendar.HOUR_OF_DAY, 15);
  alarmStartTime.set(Calendar.MINUTE, 58);
  alarmStartTime.set(Calendar.SECOND, 0);

   System.out.println("Updating table time "+alarmStartTime);
   System.out.println("Time in millseconds "+alarmStartTime.getTimeInMillis());

你认为

您可以通过以下方式存储和检索该值:

日历calendar=Calendar.getInstance();

但这是错误的

要存储值，请使用:

SharedPreferences prf = PreferenceManager.getDefaultSharedPreferences(context);

Editor editor = prf.edit();
editor.putLong("SOMESTRINGVALUETOSAVE",alarmStartTime.getTimeInMillis());
editor.commit();

获取:

 SharedPreferences prf = PreferenceManager.getDefaultSharedPreferences(context);
long default_val = System.currentTimeInMillis();// I do not know your default value.
long your_millis = prf.getLong("SOMESTRINGVALUETOSAVE", default_value);