Question

我正在处理一个应用程序，我正在使用AlarmManager来安排事情。我的闹钟设定好了。但是，此警报不会调用BroadcastReceiver来捕获事件。我搜索了很多，但我没有找到任何解决问题的方法。我发布了我的代码，请看看我是否遗漏了一些东西。

AlarmManagerClass：

public class ScheduleMessageManager {

Context context;
PendingIntent sender;
AlarmManager am;


public ScheduleMessageManager(Context context) {
    this.context = context;
}

public void addAlram(int scheduledMessageID, long scheduledTime) {

    // Activate Broadcast Receiver to receive broadcasts
    activateBroadcastReceiver();
    //Calendar cal = Calendar.getInstance();

    Intent intent = new Intent(context, AlarmReceiver.class);
    // In reality, you would want to have a unique variable for the request
    // code
    intent.putExtra("scheduledMessageID", scheduledMessageID);
    sender = PendingIntent.getBroadcast(context, scheduledMessageID, intent, PendingIntent.FLAG_UPDATE_CURRENT);

    // Get the AlarmManager service
    am = (AlarmManager) context.getSystemService(context.ALARM_SERVICE);
    am.set(AlarmManager.RTC_WAKEUP, scheduledTime, sender);

    Log.e("In ScheduleMessageManage", "***** Alarm is set to the mmessage *****");
}

public void cancelPeriodicSchedule(PendingIntent sender) {
    if (am != null) {
        if (sender != null) {
            am.cancel(sender);
            sender.cancel();
        }
    }

    // Deactivate Broadcast Receiver to stop receiving broadcasts
    deactivateBroadcastreceiver();
}

private void activateBroadcastReceiver() {
    PackageManager pm = context.getPackageManager();
    ComponentName componentName = new ComponentName(context, AlarmReceiver.class);
    pm.setComponentEnabledSetting(componentName, PackageManager.COMPONENT_ENABLED_STATE_ENABLED, PackageManager.DONT_KILL_APP);
    Toast.makeText(context, "activated", Toast.LENGTH_LONG).show();
}

private void deactivateBroadcastreceiver() {
    // TODO Auto-generated method stub

    PackageManager pm = context.getPackageManager();
    ComponentName componentName = new ComponentName(context, AlarmReceiver.class);
    pm.setComponentEnabledSetting(componentName, PackageManager.COMPONENT_ENABLED_STATE_DISABLED, PackageManager.DONT_KILL_APP);
    Toast.makeText(context, "cancelled", Toast.LENGTH_LONG).show();

}

}

我的AlarmReceiver：

public class AlarmReceiver extends BroadcastReceiver {

int pendingIntentID; // same as scheduledMessageID

@Override
public void onReceive(Context context, Intent intent) {

    Log.e("In On Receive", "Alarm has Initiated Broadcast Receiver....");

    if (intent.hasExtra("scheduledMessageID")) {
        pendingIntentID = intent.getExtras().getInt("scheduledMessageID");
        Intent sendMessageServiceIntent = new Intent(context, SendMessageService.class);
        sendMessageServiceIntent.putExtra("pendingIntentID", pendingIntentID);
        context.startService(sendMessageServiceIntent);
    }
}

}

OnReceieve()永远不会被调用。

在我的 Manifest.xml

中

  <receiver
        android:name="myPackage.AlarmReceiver"
        android:enabled="true" >
    </receiver>

我无法弄清楚问题所在。请帮助我。谢谢！

Answer 1

http://www.vogella.com/articles/AndroidBroadcastReceiver/article.html中提供了有关使用广播接收器的优秀教程。从本质上讲，您的接收器不会声明它将接收哪些事件。清单文件中的声明需要类似：

 <receiver
    android:name="myPackage.AlarmReceiver"
    android:enabled="true" >
    <intent-filter>
            <action android:name="your.company.blah.mybroadcast" />
        </intent-filter>
</receiver>

当你创建意图时，它需要

Intent intent = new Intent();
intent.setAction("your.company.blah.mybroadcast");
// All the other things you want to put in the intent

Answer 2

我知道这已经得到了解答，但是为了进一步参考，我遇到了同样的问题，请确保你的接收器标签在标签内，但不在任何其他标签内，例如活动（＆＃39;正是我的问题。

同样有助于检查您的闹钟是否已成功注册，以便运行： adb shell dumpsys alarm

Answer 3

您只需要在闹钟管理器中注册您的接收器，这将在每60秒后调用一次广播：

Intent broadcastIntent = new Intent(YourActivity.this, AlarmReceiver.class);

        PendingIntent pi = PendingIntent.getBroadcast(this, 0, broadcastIntent, 0);

       AlarmManager am = (AlarmManager) getSystemService(ALARM_SERVICE);

        long timeInterval = 60 * 1000;

        am.setRepeating(AlarmManager.RTC_WAKEUP, System.currentTimeMillis(), timeInterval, pi);

在清单中：

<receiver
        android:name="myPackage.AlarmReceiver"
        android:enabled="true" >
    </receiver>

Alarm Manager未激活广播接收器？

3 个答案: