android 唤醒/解锁屏幕使用示例

转载http://blog.sina.com.cn/s/blog_44df6aa50101416m.html

解锁、唤醒屏幕用到KeyguardManager，KeyguardLock，PowerManager，PowerManager.WakeLock

所需权限：

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

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

//锁屏、唤醒相关代码

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,加上会自动解锁，比较危险
              kl.disableKeyguard();
       }
       else
       {
              //锁屏
              kl.reenableKeyguard();

              //释放wakeLock，关灯
              wl.release();
       }

}