重复报警管理器重新启动后 [英] Repeating Alarm Manager After reboot

问题描述

我想创建广播AlarmManager（重复）与通知message.i从拾荒者通过我的日历对象。如果我没有重新启动我的设备使用正常，然而，当我重新启动我的设备，你也知道我的压延机的对象为null。如何管理我的重启后，重复报警，我怎么能握住我的日历日程安排？ 感谢您的想法。

 公共类MyReceiver扩展的BroadcastReceiver {
私有静态最终诠释PERIOD = 10000;
最终公共静态字符串ALARM_ID =AlarmId;
最终公共静态字符串NOTIFICATION_ID =NotificationId;


@覆盖
公共无效的onReceive（上下文ctxt，意图我）{

}

静态无效scheduleAlarms（上下文ctxt，日历C）{
    AlarmManager alarManager =（AlarmManager）ctxt
            .getSystemService（Context.ALARM_SERVICE）;
//通知servise
    意图I =新的意图（ctxt，ScheduledService.class）;
i.putExtra（ALARM_ID，1）;
i.putExtra（NOTIFICATION_ID，1）;

PendingIntent PI = PendingIntent.getService（ctxt，0，I，
            PendingIntent.FLAG_UPDATE_CURRENT）;
alarManager.setRepeating（AlarmManager.RTC，c.getTimeInMillis（），周期，PI）;
}
 

解决方案

您需要使用的BroadcastReceiver 键，将其设置为回应BOOT_COMPLETED 的消息。例如

填写您的BroadcastReceiver在清单

 ＆LT;接收机器人：MyBootReceiverNAME =＆GT;
    ＆LT;意向滤光器＆gt;
        ＆lt;作用机器人：名称=android.intent.action.BOOT_COMPLETED/＆GT;
    ＆所述; /意图滤光器＆gt;
＆LT; /接收器＆GT;
 

在你的code处理消息

MyBootReceiver.java

 公共类MyBootReceiver扩展的BroadcastReceiver
{
    私有静态最后字符串变量=MyBootReceiver;

    公共无效的onReceive（上下文的背景下，意图意图）{
        Log.d（TAG的onReceive）;
        日历CAL = this.getMyCalendar（）;
        this.scheduleAlarms（背景下，CAL）;
    }

    私人日历getMyCalendar（）{
        //得到你的日历对象
    }

    私人无效scheduleAlarms（上下文ctxt，日历C）{
        AlarmManager alarManager =（AlarmManager）ctxt.getSystemService（Context.ALARM_SERVICE）;
        //通知servise
        意图I =新的意图（ctxt，ScheduledService.class）;
        i.putExtra（ALARM_ID，1）;
        i.putExtra（NOTIFICATION_ID，1）;

        PendingIntent PI = PendingIntent.getService（ctxt，0，I，PendingIntent.FLAG_UPDATE_CURRENT）;
        alarManager.setRepeating（AlarmManager.RTC，c.getTimeInMillis（），周期，PI）;
    }
}
 

这将重置您的报警日程安排上的引导。

i want to create broadcast AlarmManager(repeating) with Notification message.i pass my calender object from Pickers. If i don't reboot my device it works normally. However, when i reboot my device,as you know my calander object will be null. How can i manage my repeating alarm after rebooting and how can i hold my Calendar schedules? Thanks for your ideas.

public class MyReceiver extends BroadcastReceiver {
private static final int PERIOD = 10000;
final public static String ALARM_ID = "AlarmId";
final public static String NOTIFICATION_ID = "NotificationId";


@Override
public void onReceive(Context ctxt, Intent i) {

}

static void scheduleAlarms(Context ctxt,Calendar c) {
    AlarmManager alarManager = (AlarmManager) ctxt
            .getSystemService(Context.ALARM_SERVICE);
//notification servise  
    Intent i = new Intent(ctxt, ScheduledService.class);
i.putExtra(ALARM_ID, 1);
i.putExtra(NOTIFICATION_ID, 1);

PendingIntent pi = PendingIntent.getService(ctxt, 0, i,
            PendingIntent.FLAG_UPDATE_CURRENT);
alarManager.setRepeating(AlarmManager.RTC,c.getTimeInMillis(),PERIOD, pi);
}

解决方案

You need to use a BroadcastReceiver and set it to respond to BOOT_COMPLETED messages. For example

Register your BroadcastReceiver in the manifest

<receiver android:name=".MyBootReceiver">
    <intent-filter>
        <action android:name="android.intent.action.BOOT_COMPLETED" />
    </intent-filter>
</receiver>

Handle the message within your code

MyBootReceiver.java

public class MyBootReceiver extends BroadcastReceiver 
{
    private static final String TAG = "MyBootReceiver";

    public void onReceive(Context context, Intent intent) {
        Log.d(TAG, "onReceive");
        Calendar cal = this.getMyCalendar();
        this.scheduleAlarms(context, cal);
    }

    private Calendar getMyCalendar() {
        // get your calendar object
    }

    private void scheduleAlarms(Context ctxt, Calendar c) {
        AlarmManager alarManager = (AlarmManager) ctxt.getSystemService(Context.ALARM_SERVICE);
        //notification servise  
        Intent i = new Intent(ctxt, ScheduledService.class);
        i.putExtra(ALARM_ID, 1);
        i.putExtra(NOTIFICATION_ID, 1);

        PendingIntent pi = PendingIntent.getService(ctxt, 0, i, PendingIntent.FLAG_UPDATE_CURRENT);
        alarManager.setRepeating(AlarmManager.RTC,c.getTimeInMillis(),PERIOD, pi);
    }
}

This will reset your alarm schedule on boot.

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