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

//锁屏、唤醒相关 private KeyguardManager  km; private KeyguardLock kl; private PowerManager pm; private PowerManager.WakeLock wl;       private void wakeAndUnlock(boolean b) {        if(b)        {               //获取电源管理器对象               pm=(PowerManager) getSystemService(Context.POWER_SERVICE);                 //获取PowerManager.WakeLock对象，后面的参数|表示同时传入两个值，最后的是调试用的Tag               wl = pm.newWakeLock(PowerManager.ACQUIRE_CAUSES_WAKEUP | PowerManager.SCREEN_BRIGHT_WAKE_LOCK, "bright");                 //点亮屏幕               wl.acquire();                            //得到键盘锁管理器对象               km= (KeyguardManager)getSystemService(Context.KEYGUARD_SERVICE);               kl = km.newKeyguardLock("unLock");                 //解锁               kl.disableKeyguard();        }        else        {               //锁屏               kl.reenableKeyguard();                            //释放wakeLock，关灯               wl.release();        }       }