服务会暂停在锁屏 [英] Service pauses on screen lock

问题描述

有关测试的目的，我已经取得了蜂鸣服务 每1分钟。 （无客户端 - 服务器接口还）。它会发出蜂鸣声好时 在屏幕上，但是当它进入睡眠状态的蜂鸣声停止。

For testing purposes i have made a service that beeps every 1 minute. (No client-server interface yet). It beeps okay when the screen in on, but when it goes to sleep the beeping stops.

我在做，有定期轮询服务器的应用程序 什么东西。

I am making an application that has to periodically poll the a server for something.

对于这一点，我想创建一个会不断地将服务 在后台运行，轮询服务器，每1分钟，然后根据 从服务器的应答应当产生一个任务栏通知。

For this, I am trying to create a service that'll constantly be running in the background, poll the server every 1 min and then based on the reply from server it shall generate a task bar notification.

我有一个测试活动有两个按钮，1开始，另一个用于 停止该服务。并命名为S_PS_PollService一个服务类

I have a test activity with two buttons, 1 to start and the other to stop the service. And one service class named S_PS_PollService

的启动活动按钮setOnClickListener包括：

The setOnClickListener of 'Start Activity' button contains:

Thread pollServiceThread = new Thread() {
  public void run() {
    startService(new Intent(MM_MainMenu.this,
    S_PS_PollService.class));
  }
};

pollServiceThread.start();

在停止活动按钮，只需有：

The 'Stop Activity' button simply has:

stopService(new Intent(MM_MainMenu.this, S_PS_PollService.class));

以下是从S_PS_PollService类的方法：

Following are the methods from S_PS_PollService class:

public void onCreate() {
 pollSound = MediaPlayer.create(this, R.raw.chirp);
 alarmManager = (AlarmManager) getSystemService(ALARM_SERVICE);
 Intent myIntent = new Intent(this, S_PS_PollService.class);
 pendingIntent = PendingIntent.getService(this, 0, myIntent, 0);
 // for wake lock
 pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
 wl = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "My Tag")
 // for calendar
 calendar = Calendar.getInstance();
}

ONSTART：

Onstart:

public void onStart(Intent intent, int startId) {
 super.onStart(intent, startId);

 wl.acquire();

 pollSound.start();

 calendar.setTimeInMillis(System.currentTimeMillis());
 calendar.add(Calendar.MILLISECOND, 60000);
 alarmManager.set(AlarmManager.RTC_WAKEUP,
 calendar.getTimeInMillis(), pendingIntent);

 wl.release();
}

每当警报序幕ONSTART（）方法被执行，使得 发出蜂鸣声和设置新的警报。但它仅只要屏幕上。

Whenever the alarm kicks off onStart() method is executed, making the beep and setting new alarm. But it works only as long as screen is on.

我曾尝试 https://github.com/commonsguy/cwac-wakeful 但didnt 得到它。相对较新到Android ...

I have tried for https://github.com/commonsguy/cwac-wakeful but didnt get it. Relatively new to android ...

请帮我而言，我很绝望:)谢谢！

Please help me, im very desperate :) Thanks, !

推荐答案

这终于为我工作。 从 https://github.com/commonsguy/cwac-wakeful 下载CWAC，WakefulIntentService.jar

This finally worked for me. Download the CWAC-WakefulIntentService.jar from https://github.com/commonsguy/cwac-wakeful

在你的项目中添加一个类

add a class in your project

import com.commonsware.cwac.wakeful.WakefulIntentService;

public class WakeService extends WakefulIntentService {

    public WakeService(String name) {

        super(name);

    }
    @Override
    protected void doWakefulWork(Intent intent) {
    }
}

现在在code以下行添加在任何你想重复循环，唤醒设备

now add the following line in your code where ever you want to repeat the loop and wake the device up

WakefulIntentService.sendWakefulWork（这一点，S_WS_WakeService.class）;

这篇关于服务会暂停在锁屏的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！