如何每天中午运行服务,并在每次启动 [英] How to run a service every day at noon, and on every boot
问题描述
在我的应用程序我有一个表,在毫秒日期行SQLite数据库。我想表明的通知天天如果 30天内,因为存储在我的数据库中的最后一个日期值传递。服务似乎是实现这一目标的检查,一个好办法。
In my app I have SQLite database that has one table with date rows in milliseconds. I would like to have a notification shown every day IF 30 days has passed since the last date value stored in my database. A service seems to be a good way to accomplish this check up.
我跑进Commonsware的 WakefulIntentService
,并认为这可能是答案,但我真的不知道我应该怎么实现它。在演示它开始5分钟后一种服务,因为启动完成这仅仅是罚款,但做什么我需要添加得到它也开始在每个中午。 (...但只显示一个通知/天,而不是两个,从引导和每天定时清理)
I ran into Commonsware's WakefulIntentService
and thought it could be the answer but I really don't know how should I implement it. In the demo it starts a service after 5 minutes since boot is complete which is just fine but what do I need to add to get it also start at every noon. (... but only to show one notification / day, not both, as from boot and regular daily check up)
我知道这可能使用AlarmManager得到解决,但真的不知道怎么办。因此,帮助我需要的是给我一些样本/关键点,以获得在每次启动和/或每天的服务启动没有应用程序的运行。
I know this could be solved using AlarmManager but really don't know how. So, the help I need is to give me some samples / key points to get the service start on every boot and/or every day without app running.
感谢
推荐答案
Android的alarmmanager是你的答案。将其与广播接收器也将复位报警的电话叫醒。
Android alarmmanager is your answer. use it with a broadcast receiver which also resets the alarms on phone wake.
现在与code例如: 一个方法内设置报警:
Now with code example: Setting alarm inside a method:
Intent intent = new Intent(context, AlarmReceiver.class);
intent.setAction("packagename.ACTION");
PendingIntent pendingIntent = PendingIntent.getBroadcast(context,
0, intent, PendingIntent.FLAG_CANCEL_CURRENT);
Calendar calendar = Calendar.getInstance();
calendar.setTimeInMillis(System.currentTimeMillis());
AlarmManager alarm = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
alarm.cancel(pendingIntent);
alarm.setRepeating(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(), AlarmManager.INTERVAL_DAY, pendingIntent);
接收器为你的时间:
Receiver for your interval:
public class AlarmReceiver extends BroadcastReceiver {
private final String SOMEACTION = "packagename.ACTION"; //packagename is com.whatever.www
@Override
public void onReceive(Context context, Intent intent) {
Time now = new Time();
now.setToNow();
String time = FileHandler.timeFormat(now);
String action = intent.getAction();
if(SOMEACTION.equals(action)) {
// here you call a service etc.
}
接收器复位报警时手机已经关机。
Receiver for resetting alarms whenever phone has been shut down.
public class AlarmSetter extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
// get preferences
SharedPreferences preferences = context.getSharedPreferences("name_of_your_pref", 0);
Map<String, ?> scheduleData = preferences.getAll();
// set the schedule time
if(scheduleData.containsKey("fromHour") && scheduleData.containsKey("toHour")) {
int fromHour = (Integer) scheduleData.get("fromHour");
int fromMinute = (Integer) scheduleData.get("fromMinute");
int toHour = (Integer) scheduleData.get("toHour");
int toMinute = (Integer) scheduleData.get("toMinute");
//Do some action
}
}
}
清单非常重要,这是在应用程序中加入:
Manifest very important, this is added under application:
<receiver android:name="AlarmReceiver">
<intent-filter>
<action android:name="packagename.ACTION"/>
<action android:name="packagename.ACTION2"/>
</intent-filter>
</receiver>
<receiver android:name="AlarmSetter" >
<intent-filter>
<action
android:name="android.intent.action.BOOT_COMPLETED" />
</intent-filter>
</receiver>
另外为了这个工作,你需要添加允许收取开机广播在清单中有如下一行:
Also in order for this to work you need to add permission to receive the boot Broadcast in the manifest with following line:
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
希望这会茅塞顿开,如有错误,PLZ告诉。
Hope this cleared things up, if any errors plz tell.
修改(添加alarmsetter为例):
Edit (added alarmsetter example):
public class AlarmSetter extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
// Do your stuff
}
}
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