无法创建报警管理器 [英] Can not create Alarm Manager

问题描述

对不起，我的英语不好。我面临的问题。我尝试创建持续的报警通知。警报通知必须开始每10秒。我使用报警管理器，但它doest't工作。我在做什么错了？

 公共类RemindReceiver扩展广播接收器{私有类＆LT;＆GT; activityClass;公共RemindReceiver（）{}公共RemindReceiver（类＆LT;＆GT; activityClass）{    this.activityClass = activityClass;
}@覆盖
公共无效的onReceive（上下文的背景下，意图意图）{    NotificationManager notifyManager =（NotificationManager）context.getSystemService（Context.NOTIFICATION_SERVICE）;    通知通知=新的通知（R.mipmap.ic_launcher，一些文本，System.currentTimeMillis的（））;    意图int​​entTL =新意图（背景下，activityClass）;
    notification.setLatestEventInfo（背景下，标题，一些文本
            PendingIntent.getActivity（上下文，0，intentTL，PendingIntent.FLAG_CANCEL_CURRENT））;
    notification.flags = Notification.DEFAULT_LIGHTS | Notification.FLAG_AUTO_CANCEL;
    notifyManager.notify（1，通知）;    AlarmManager alarmManager =（AlarmManager）context.getSystemService（Context.ALARM_SERVICE）;    的PendingIntent的PendingIntent = PendingIntent.getBroadcast（背景下，0，意向，PendingIntent.FLAG_CANCEL_CURRENT）;    alarmManager.setRepeating（AlarmManager.ELAPSED_REALTIME_WAKEUP，System.currentTimeMillis的（），1000 * 5的PendingIntent）;
}公共无效setRemind（上下文的背景下）{    AlarmManager alarmManager =（AlarmManager）context.getSystemService（Context.ALARM_SERVICE）;
    意向意图=新意图（背景下，RemindReceiver.class）;
    的PendingIntent的PendingIntent = PendingIntent.getBroadcast（上下文，0，意图，0）;
    alarmManager.setRepeating（AlarmManager.ELAPSED_REALTIME_WAKEUP，System.currentTimeMillis的（），1000 * 5的PendingIntent）;
}}
 

片段：

 公共类PersonListFragment扩展片段{私人RemindReceiver remindReceiver;@覆盖
公共查看onCreateView（LayoutInflater充气器，容器的ViewGroup，捆绑savedInstanceState）{    查看rootView = inflater.inflate（R.layout.person_list_fragment_layout，集装箱，FALSE）;    按钮Next按钮=（按钮）rootView.findViewById（R.id.next_button）;
    ListView控件personListView =（ListView控件）rootView.findViewById（R.id.name_list_view）;
    清单＆LT;＆人GT; personList = PersonListGenerator.generate（）;    PersonListAdapter适配器=新PersonListAdapter（getActivity（），personList）;
    personListView.setAdapter（适配器）;    上下文的背景下= getActivity（）getApplicationContext（）。
    remindReceiver =新RemindReceiver（PersonListActivity.class）;
    remindReceiver.setRemind（上下文）;
    remindReceiver.onReceive（getActivity（），新的意向书（））;    nextButton.setOnClickListener（新View.OnClickListener（）{
        @覆盖
        公共无效的onClick（视图v）{            意向意图=新意图（getActivity（），ExpandablePersonListActivity.class）;
            startActivity（意向）;
        }
    }）;    返回rootView;
}}
 

和我一块Android清单的：

 ＆LT;使用许可权的android：NAME =android.permission.RECEIVE_BOOT_COMPLETED/＆GT;
＆LT;使用许可权的android：NAME =android.permission.WAKE_LOCK/＆GT;
＆lt;接收机器人：名字=。utility.RemindReceiver
        机器人：启用=假＆GT;
        ＆所述;意图滤光器＆gt;
            ＆lt;作用机器人：名字=android.intent.action.BOOT_COMPLETED＆GT;＆LT; /作用＆gt;
        ＆所述; /意图滤光器＆gt;
    ＆LT; /接收器＆GT;
 

解决方案

你能尝试SystemClock.elapsedRealtime（）？

例如：

  alarmManager.setRepeating（AlarmManager.ELAPSED_REALTIME_WAKEUP，SystemClock.elapsedRealtime（），1000 * 5的PendingIntent）;
 

我依稀记得AlarmManager.ELAPSED_REALTIME_WAKEUP需要SystemClock.elapsedRealtime（），而不是System.currentTimeMillis的（）

我却无法找到在哪里我之前阅读。当我找到它，我会更新。

编辑：

据：<一href=\"http://developer.android.com/reference/android/app/AlarmManager.html#set(int,%20long,%20android.app.PendingIntent)\"相对=nofollow> AlarmManager.set（int型的，长triggerAtMillis，操作的PendingIntent）SDK文档..

  

参数

  
  

  
• 类型：一ELAPSED_REALTIME，ELAPSED_REALTIME_WAKEUP，RTC，或RTC_WAKEUP的。以毫秒为单位triggerAtMillis时间报警应
    熄灭，使用

  
• 酌情：时钟（取决于报警类型）。

  
• 操作：操作时警报响起时执行;通常来自IntentSender.getBroadcast（）。

  

Sorry for my bad English. I faced with the problem. I try to create persistent alarm notification. Alarm notification must start every 10 seconds. I am using Alarm Manager,but it doest't work. What i am doing wrong?

public class RemindReceiver extends BroadcastReceiver {

private Class<?> activityClass;

public RemindReceiver() {

}

public RemindReceiver(Class<?> activityClass) {

    this.activityClass = activityClass;
}

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

    NotificationManager notifyManager = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);

    Notification notification = new Notification(R.mipmap.ic_launcher, "Some Text", System.currentTimeMillis());

    Intent intentTL = new Intent(context, activityClass);
    notification.setLatestEventInfo(context, "Title", "Some Text",
            PendingIntent.getActivity(context, 0, intentTL, PendingIntent.FLAG_CANCEL_CURRENT));
    notification.flags = Notification.DEFAULT_LIGHTS | Notification.FLAG_AUTO_CANCEL;
    notifyManager.notify(1, notification);

    AlarmManager alarmManager = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);

    PendingIntent pendingIntent = PendingIntent.getBroadcast(context, 0, intent, PendingIntent.FLAG_CANCEL_CURRENT);

    alarmManager.setRepeating(AlarmManager.ELAPSED_REALTIME_WAKEUP, System.currentTimeMillis(), 1000 * 5, pendingIntent);
}

public void setRemind(Context context) {

    AlarmManager alarmManager = (AlarmManager)context.getSystemService(Context.ALARM_SERVICE);
    Intent intent = new Intent(context, RemindReceiver.class);
    PendingIntent pendingIntent = PendingIntent.getBroadcast(context, 0, intent, 0);
    alarmManager.setRepeating(AlarmManager.ELAPSED_REALTIME_WAKEUP, System.currentTimeMillis(), 1000 * 5 , pendingIntent);
}}

Fragment:

public class PersonListFragment extends Fragment {

private RemindReceiver remindReceiver;

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {

    View rootView = inflater.inflate(R.layout.person_list_fragment_layout, container, false);

    Button nextButton = (Button) rootView.findViewById(R.id.next_button);
    ListView personListView = (ListView) rootView.findViewById(R.id.name_list_view);
    List<Person> personList = PersonListGenerator.generate();

    PersonListAdapter adapter = new PersonListAdapter(getActivity(), personList);
    personListView.setAdapter(adapter);

    Context context = getActivity().getApplicationContext();
    remindReceiver = new RemindReceiver(PersonListActivity.class);
    remindReceiver.setRemind(context);
    remindReceiver.onReceive(getActivity(), new Intent());

    nextButton.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {

            Intent intent = new Intent(getActivity(), ExpandablePersonListActivity.class);
            startActivity(intent);
        }
    });

    return rootView;
}}

And piece of my Android Manifest:

<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"/>
<uses-permission android:name="android.permission.WAKE_LOCK"/>
<receiver android:name=".utility.RemindReceiver"
        android:enabled="false">
        <intent-filter>
            <action android:name="android.intent.action.BOOT_COMPLETED"></action>
        </intent-filter>
    </receiver>

解决方案

Can you try SystemClock.elapsedRealtime() ?

e.g.:

    alarmManager.setRepeating(AlarmManager.ELAPSED_REALTIME_WAKEUP, SystemClock.elapsedRealtime(), 1000 * 5, pendingIntent);

I vaguely remember AlarmManager.ELAPSED_REALTIME_WAKEUP needing SystemClock.elapsedRealtime() and not System.currentTimeMillis()

I can't however find where I read this before. I will update when I find it.

edit:

According to: AlarmManager.set(int type, long triggerAtMillis, PendingIntent operation) sdk docs..

Parameters

• type: One of ELAPSED_REALTIME, ELAPSED_REALTIME_WAKEUP, RTC, or RTC_WAKEUP. triggerAtMillis time in milliseconds that the alarm should go off, using the
• appropriate: clock (depending on the alarm type).
• operation: Action to perform when the alarm goes off; typically comes from IntentSender.getBroadcast().

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