android保持在休眠时，后台程序继续运行（让程序获取设备电源锁）

//在获取电源锁的程序中,必须在其Manifest.xml文件中加入下面的权限:

<uses-permission android:name="android.permission.WAKE_LOCK" />


private PowerManager.WakeLock mWakeLock;



//申请设备电源锁

    private void acquireWakeLock()

    {

        if (null == mWakeLock)

        {

            PowerManager pm = (PowerManager)this.getSystemService(Context.POWER_SERVICE);

            mWakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK|PowerManager.ON_AFTER_RELEASE,"");

            if (null != mWakeLock)

            {

                mWakeLock.acquire();

            }

        }

    }



    //释放设备电源锁

    private void releaseWakeLock()

    {

        if (null != mWakeLock)

        {

            mWakeLock.release();

            mWakeLock = null;

        }

    }

 

【原创笔记】手机休眠后，定时唤醒你的后台服务

http://my.eoe.cn/indexer/archive/4587.html

Android系统休眠和定时唤醒讨论

http://bbs.csdn.net/topics/340139059