[英]Android: Starting a service at a chosen time
我有一個BroadcastReceiver啟動服務。 在此服務中,我有一個AlarmManager,我想每天在每天的特定時間啟動另一個服務。
當我打開應用程序時,會啟動BroadcastReceiver,但如果我在設置的時間啟動BroadCastReceiver,則AlarmManager僅啟動其服務。
如何獲得將當前時間與設置時間進行持續比較的信息,以便在合適的時間自動運行?
在MainActivity.java中
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Intent intent = new Intent();
intent.setAction("com.example.BroadcastPro.MyBroadcastReceiver");
sendBroadcast(intent);
}
在myBroadcastReceiver.java中
public class MyBroadcastReceiver extends BroadcastReceiver
{
@Override
public void onReceive(Context context, Intent intent)
{
Intent i=new Intent(context,SetPeriodicService.class);
context.startService(i);
}
}
在SetPeriodicService.java中
public int onStartCommand(Intent intent, int flags, int startId)
{
Calendar calendar = Calendar.getInstance();
calendar.setTimeInMillis(System.currentTimeMillis());
calendar.set(Calendar.HOUR_OF_DAY, 12);
calendar.set(Calendar.MINUTE, 30);
Intent i=new Intent(this,MyService.class);
PendingIntent alarmIntent = PendingIntent.getService(this, 0, i, 0);
AlarmManager alarmMgr = (AlarmManager)getSystemService(Context.ALARM_SERVICE);
alarmMgr.setRepeating(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(), alarmManager.INTERVAL_DAY, alarmIntent);
return super.onStartCommand(intent, flags, startId);
}
在SetPeriodicService.java中的alarmMgr.setRepeating(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(), alarmManager.INTERVAL_DAY, alarmIntent);
您需要更改為alarmMgr.setRepeating(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(), alarmMgr.INTERVAL_DAY, alarmIntent);
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