Question

我在设置闹钟时遇到问题，即发送有关即将发生的事件的通知。我使用这些代码行从我的班级调用它（到目前为止它在应用程序启动后10秒开始，仅用于测试目的）：

public void initNotifications(){
        AlarmManager alarms = (AlarmManager)this.getSystemService(Context.ALARM_SERVICE);

        BroadcastManager receiver = new BroadcastManager();
        IntentFilter filter = new IntentFilter("ALARM_ACTION");
        registerReceiver(receiver, filter);

        Intent intent = new Intent("ALARM_ACTION");
        intent.putExtra("param", "My scheduled action");
        PendingIntent operation = PendingIntent.getBroadcast(this, 0, intent, 0);
        // I choose 3s after the launch of my application
        alarms.set(AlarmManager.RTC_WAKEUP, System.currentTimeMillis()+10000, operation) ;
    }

and here is the Broadcast Manager class (separate file):

public class BroadcastManager extends BroadcastReceiver {
    @Override
    public void onReceive(Context context, Intent intent) {
        // TODO Auto-generated method stub
        //Toast.makeText(context, intent.getStringExtra("param"),Toast.LENGTH_SHORT).show();
        Intent it =  new Intent(context, MainActivity.class);
        createNotification(context, it);
    }

我还有createNotification函数，工作正常。

现在我将以下行添加到android Manifest：

<receiver
            android:name="BroadcastManager"
            android:label="BroadcastReceiverAux">
            <intent-filter>
                <action android:name="ALARM" />

                <category android:name="android.intent.category.DEFAULT" />
            </intent-filter>
        </receiver>

在十秒钟之前退出应用程序时会发生以下错误代码：

Activity com.mysampleapp.MainMenu has leaked IntentReceiver com.mysampleapp.BroadcastManager@3370c300 that was originally registered here. Are you missing a call to unregisterReceiver()?
                                                                    android.app.IntentReceiverLeaked: Activity com.mysampleapp.MainMenu has leaked IntentReceiver com.mysampleapp.BroadcastManager@3370c300 that was originally registered here. Are you missing a call to unregisterReceiver()?
                                                                        at android.app.LoadedApk$ReceiverDispatcher.<init>(LoadedApk.java:960)
                                                                        at android.app.LoadedApk.getReceiverDispatcher(LoadedApk.java:761)
                                                                        at android.app.ContextImpl.registerReceiverInternal(ContextImpl.java:2002)
                                                                        at android.app.ContextImpl.registerReceiver(ContextImpl.java:1982)
                                                                        at android.app.ContextImpl.registerReceiver(ContextImpl.java:1976)
                                                                        at android.content.ContextWrapper.registerReceiver(ContextWrapper.java:503)
                                                                        at com.mysampleapp.MainMenu.initNotifications(MainMenu.java:672)
                                                                        at com.mysampleapp.MainMenu.onCreate(MainMenu.java:133)
                                                                        at android.app.Activity.performCreate(Activity.java:6283)
                                                                        at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1119)
                                                                        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2642)
                                                                        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2756)
                                                                        at android.app.ActivityThread.access$900(ActivityThread.java:177)
                                                                        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1448)
                                                                        at android.os.Handler.dispatchMessage(Handler.java:102)
                                                                        at android.os.Looper.loop(Looper.java:145)
                                                                        at android.app.ActivityThread.main(ActivityThread.java:5940)
                                                                        at java.lang.reflect.Method.invoke(Native Method)
                                                                        at java.lang.reflect.Method.invoke(Method.java:372)
                                                                        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1389)
                                                                        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1184)

我老老实实地在Stack上查看了几个主题，但我找不到能解决问题的答案。我希望即使在设备重启后我的通知仍然可以运行，但是我想在以后杀死应用程序之后立即显示它们之后再移动。

提前谢谢你，约翰

Answer 1

尝试使用这样的AlarmManager，它对我有用：

        Intent intent = new Intent(getActivity(), BroadcastManager.class);
        PendingIntent pendingIntent = PendingIntent.getBroadcast(getActivity(), 0, intent, PendingIntent.FLAG_ONE_SHOT);

        AlarmManager alarmManager = (AlarmManager) getActivity().getSystemService(Context.ALARM_SERVICE);
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
            alarmManager.setExact(AlarmManager.RTC, System.currentTimeMillis()+10000, pendingIntent);
        } else {
            alarmManager.set(AlarmManager.RTC, System.currentTimeMillis()+10000, pendingIntent);
        }

关闭应用程序时取消Android警报。泄露的IntentReceiver

1 个答案: