Android 解屏幕锁与点亮屏幕

当Android手机(应该是所有的手机都这样)收到短信或者电话时,会自动点亮屏幕,解开屏幕锁,以方便用户即时操作,下面用代码来实现这一功能:

KeyguardManager km = (KeyguardManager )getSystemService ( Context. KEYGUARD_SERVICE ) ;
//得到键盘锁管理器对象
KeyguardLock kl =km. newKeyguardLock ( "unLock" ) ;
//参数是LogCat里用的Tag
kl. disableKeyguard ( ) ;
//解锁
PowerManager pm = (PowerManager )getSystemService ( Context. POWER_SERVICE ) ;
//获取电源管理器对象
PowerManager. WakeLockwl =pm. newWakeLock (PowerManager. ACQUIRE_CAUSES_WAKEUP |PowerManager. SCREEN_DIM_WAKE_LOCK, "bright" ) ;
//获取PowerManager.WakeLock对象,后面的参数|表示同时传入两个值,最后的是LogCat里用的Tag
wl. acquire ( ) ;
//点亮屏幕
wl. release ( ) ;
//释放

需要在AndroidManifest.xml添加权限:

1 2	<uses-permission android:name="android.permission.WAKE_LOCK" /> <uses-permission android:name="android.permission.DISABLE_KEYGUARD" />