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Android中,申请WakeLock可以让你的进程持续执行即使手机进入睡眠模式,比较实用的是比如后台有网络功能,可以保证操作持续进行.
需要权限
<uses-permission android:name="android.permission.WAKE_LOCK"/>
API
| Flag Value | CPU | Screen | Keyboard |
|---|---|---|---|
PARTIAL_WAKE_LOCK |
On* | Off | Off |
SCREEN_DIM_WAKE_LOCK |
On | Dim | Off |
SCREEN_BRIGHT_WAKE_LOCK |
On | Bright | Off |
FULL_WAKE_LOCK |
On | Bright | Bright |
PowerManager pm = (PowerManager) mContext.getSystemService(Context.POWER_SERVICE); wakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, Constants.TAG);
//打开 wakeLock.acquire();
//关闭
if (wakeLock != null) {
wakeLock.release();
wakeLock = null;
}
另一种方法是
@Override protected void onCreate(Bundle bundle) { super .onCreate(bundel); getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); //or
getWindow().setFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON,WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); }
原文：http://www.cnblogs.com/niray/p/4366395.html