android 4.0以上屏蔽HOME按键

WindowManager.java (frameworks\base\core\java\android\view)

中添加 public static final int FLAG_DISMISS_HOME_KEY = 0x02000000;

修改PhoneWindowManager.java (frameworks\base\policy\src\com\android\internal\policy\impl)

if (keyCode == KeyEvent.KEYCODE_HOME) {

            // If we have released the home key, and didn't do anything else
            // while it was pressed, then it is time to go home!
            if (!down && mHomePressed) {//红色为添加部分
                final boolean homeWasLongPressed = mHomeLongPressed;
                mHomePressed = false;

               ..........

import android.view.WindowManager;

this.getWindow().addFlags(WindowManager.LayoutParams.FLAG_DISMISS_HOME_KEY);

WindowManager.LayoutParams attrs = win != null ? win.getAttrs() : null; if (attrs != null) { final int type = attrs.type; final int flag = attrs.flags; final int homeKeyFlag = flag & WindowManager.LayoutParams.FLAG_DISMISS_HOME_KEY; if (type == WindowManager.LayoutParams.TYPE_KEYGUARD || type == WindowManager.LayoutParams.TYPE_KEYGUARD_DIALOG || homeKeyFlag == WindowManager.LayoutParams.FLAG_DISMISS_HOME_KEY) { // the "app" is keyguard, so give it the key return 0; }
如果在上层app中想屏蔽home键，只需要添加

import android.view.WindowManager;

this.getWindow().addFlags(WindowManager.LayoutParams.FLAG_DISMISS_HOME_KEY);

解除home键屏蔽添加

this.getWindow().clearFlags(WindowManager.LayoutParams.FLAG_DISMISS_HOME_KEY);