问题描述
我有存储共享preferences两个柜台,我需要在午夜其重置为零每天,我知道我必须使用alarmmanager,但我真的不知道我是如何做到这一点,我看着SO exemples并在谷歌文档,但无法找到一个方法来做到这一点。
I have two counters stored with sharedpreferences and I need to reset them to zero everyday at midnight, I know I have to use alarmmanager but I don't really know how I have to do it, I looked at SO exemples and on the google documentation but can't find a way to do it.
两个计数器我已经存储这样的:
the two counters I have are stored like this:
共享preferences.Editor编辑= counters.edit();
editor.putInt(wcounter,wcounter);
editor.commit();
我怎么能在午夜进行重置?
how can I reset them at midnight?
推荐答案
设置适当的地方报警在code:
Set the alarm somewhere appropriate in your code:
private void schedAlarm(Context context) {
Calendar cal = Calendar.getInstace();
cal.set(Calendar.HOUR_OF_DAY, 0);
cal.set(Calendar.MINUTE, 0);
cal.set(Calendar.SECOND, 0);
cal.set(Calendar.MILLISECOND, 0);
cal.add(Calendar.DAY_OF_MONTH, 1);
PendingIntent pi = PendingIntent.getBroadcast(context, 0, new Intent(context, YourBroadcastReceiver.class), PendingIntent.FLAG_UPDATE_CURRENT);
AlarmManager am = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
am.setRepeating(AlarmManager.RTC_WAKEUP, cal.getTimeInMillis(), 1000*60*60*24, pi);
}
添加 YourBroadcastReceiver
作为类和AndroidManifest。
在 YourBroadcastReceiver
:
Add YourBroadcastReceiver
as class and in AndroidManifest.In YourBroadcastReceiver
:
public void onReceive (Context context, Intent intent) {
PreferenceManager.getDefaultSharedPreferences(context)
.edit().remove("wcounter").commit();
}
这篇关于在指定的时间与alarmmanager重置共享preference的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!