重启后的Android AlarmManager
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Android AlarmManager after reboot
提问by user1281053
I have a set of alarms that I need to keep after reboot. I've tried using on an boot receiver but they won't start again. I'm not sure if I understand the boot receiver and how to then restart all the alarms. I already have one receiver for my notifications, but don't know whether I can use the same receiver or if I need a new one?
我有一组需要在重新启动后保留的警报。我试过在引导接收器上使用，但它们不会再次启动。我不确定我是否理解引导接收器以及如何重新启动所有警报。我已经有一个接收器来接收我的通知，但不知道我是否可以使用同一个接收器，或者我是否需要一个新的接收器？
Could anyone point me to any good tutorials or help me out?
谁能指出我任何好的教程或帮助我？
Cheers
干杯
Code :
代码 ：
DatabaseHandler db = new DatabaseHandler(this);
List<UAlarm> alarms = db.getAllAlarms();
AlarmManager am = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
for (UAlarm ua : alarms) {
String programme = ua.getTitle();
String startTime = ua.getStart();
String endTime = ua.getEnd();
String nowPlaying = ua.getChannel();
db.addAlarm(new UAlarm(programme, startTime, endTime, nowPlaying, ""));
final UAlarm ut = new UAlarm();
ut.setTitle(programme);
ut.setStart(startTime);
ut.setEnd(endTime);
ut.setChannel(nowPlaying);
ut.setId(db.getLastEntered());
String [] bla = startTime.split(":");
int hour = Integer.parseInt(bla[0].trim());
int minute = Integer.parseInt(bla[1].trim());
minute -= 2;
Calendar cal = Calendar.getInstance();
cal.set(Calendar.HOUR_OF_DAY, hour);
cal.set(Calendar.MINUTE, minute);
Intent intenta = new Intent(this, NotificationMenu.class);
String name = programme;
intenta.putExtra("name", name);
intenta.putExtra("id", db.getLastEntered());
PendingIntent pendingIntent = PendingIntent.getBroadcast(this, ua.getId(),
intenta, PendingIntent.FLAG_CANCEL_CURRENT);
am.set(AlarmManager.RTC_WAKEUP,
cal.getTimeInMillis(), pendingIntent);
}
}
with NotificationMenu being the notifications, which is why I'm using the AlarmManager
NotificationMenu 是通知，这就是我使用 AlarmManager 的原因
回答by CommonsWare
I'm not sure if I understand the boot receiver and how to then restart all the alarms.
我不确定我是否理解引导接收器以及如何重新启动所有警报。
Just call your code to call setRepeating()(or whatever) on AlarmManager.
只需调用您的代码即可setRepeating()在AlarmManager.
For example, in this sample project, PollReceiveris set to receive BOOT_COMPLETED. In onReceive(), it reschedules the alarms:
例如，在这个示例项目中，PollReceiver设置为接收BOOT_COMPLETED。在 中onReceive()，它重新安排警报：
package com.commonsware.android.schedsvc;
import android.app.AlarmManager;
import android.app.PendingIntent;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.os.SystemClock;
public class PollReceiver extends BroadcastReceiver {
private static final int PERIOD=5000;
@Override
public void onReceive(Context ctxt, Intent i) {
scheduleAlarms(ctxt);
}
static void scheduleAlarms(Context ctxt) {
AlarmManager mgr=
(AlarmManager)ctxt.getSystemService(Context.ALARM_SERVICE);
Intent i=new Intent(ctxt, ScheduledService.class);
PendingIntent pi=PendingIntent.getService(ctxt, 0, i, 0);
mgr.setRepeating(AlarmManager.ELAPSED_REALTIME,
SystemClock.elapsedRealtime() + PERIOD, PERIOD, pi);
}
}
