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我正在尝试创建一个任务调度程序。现在我只想在收到预定的广播后弹出一条 Toast 消息。所以我有这个广播接收器:

public class AlarmReceiver extends BroadcastReceiver {
    @Override
    public void onReceive(Context context, Intent intent) {
        int group_id = intent.getIntExtra("SELECTED_GROUP", 0);
        Toast.makeText(context, "Broadcast received. Selected group ID: "+group_id, 
            Toast.LENGTH_LONG).show();
    }
}

这就是我的 AndroidManifest 文件中的内容:

<receiver android:name="com.ikmedia.smscheduler.receivers.AlarmReceiver">
    <intent-filter >
        <action android:name="com.mysite.myapp.sendSchedule"/>
    </intent-filter>
</receiver>

在我的活动中,这就是用户点击“保存”按钮时所拥有的:

Calendar calendar_schedule_time = Calendar.getInstance();
calendar_schedule_time.set(selected_year, selected_month, selected_day, selected_hour, selected_minute);
Intent intent_scheduler = new Intent();
intent_scheduler.setAction("com.mysite.myapp.sendSchedule");
intent_scheduler.putExtra("SELECTED_GROUP", selected_group_id);
PendingIntent pi_schedule_intent = PendingIntent.getBroadcast(this, Constants.Request_Codes.REQUEST_CODE_SEND_SCHEDULE, intent_scheduler, PendingIntent.FLAG_CANCEL_CURRENT);
AlarmManager alarm_manager = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
alarm_manager.set(AlarmManager.RTC_WAKEUP, calendar_schedule_time.getTimeInMillis(), pi_schedule_intent);

但是,当我点击“保存”按钮时 - 我没有收到预定的警报,而是来自 BroadcastReceiver 的立即响应。我弹出了带有额外文本的 Toast 消息,但它立即发生并且我没有时间表。

这是为什么?我如何解决它?

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1 回答 1

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alarm_manager.set(AlarmManager.RTC_WAKEUP, calendar_schedule_time.getTimeInMillis(), pi_schedule_intent);

将上述语句替换为:-

alarm_manager.set(AlarmManager.RTC_WAKEUP, System.currentTimeMillis() + calendar_schedule_time.getTimeInMillis(), pi_schedule_intent);
于 2013-11-06T11:10:48.463 回答