判断屏幕是否锁定

AndroidManifest.xml加两个权限  
<uses-permission android:name="android.permission.DISABLE_KEYGUARD"></uses-permission>  
<uses-permission android:name="android.permission.WAKE_LOCK"></uses-permission>  

 

public static boolean isWallPaperLocked(Context context) {
		KeyguardManager keyguardManager = (KeyguardManager) context
				.getSystemService(context.KEYGUARD_SERVICE);
		return keyguardManager.inKeyguardRestrictedInputMode();
	}