Android 如何屏蔽Home鍵

Android 如何屏蔽Home鍵（長按短按都不起作用）。

1. package com.test.qiao;
3. import android.app.Activity;
4. import android.os.Bundle;
5. import android.view.KeyEvent;
6. import android.view.WindowManager;
8. public class ZZZActivity extends Activity {
10. private boolean flag = true;//true位屏蔽，false位不屏蔽
12. @Override
13. public void onCreate(Bundle savedInstanceState) {
14. super.onCreate(savedInstanceState);
15. setContentView(R.layout.main);
16. }
17. @Override
18. public void onAttachedToWindow() {
19. if(flag) {
20. this.getWindow().setType(WindowManager.LayoutParams.TYPE_KEYGUARD);
21. }
22. super.onAttachedToWindow();
23. }
25. @Override
26. public boolean onKeyDown(int keyCode, KeyEvent event) {
27. if(keyCode == KeyEvent.KEYCODE_HOME){
28. return true;
29. }
30. return super.onKeyDown(keyCode, event);
31. }
32. }