Android怎的在Framework层使用解锁代码

import android.app.KeyguardManager;
import android.app.KeyguardManager.KeyguardLock;
import com.android.server.wm.WindowManagerService;

  KeyguardManager keyguardManager = (KeyguardManager)mContext.getSystemService("keyguard");
  KeyguardLock keyguardLock = keyguardManager.newKeyguardLock(TAG);
  keyguardLock.disableKeyguard();