android4.2 屏蔽home键

屏蔽方法基于修改android源码，不能修改android源码的请绕道

1.修改文件 WindowManager.java (frameworks\base\core\java\android\view)

在其中添加public static final int FLAG_DISMISS_HOME_KEY = 0x02000000;

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

红色部分为添加

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;

..........

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;
               }

当想要在上层APP中实现时，先定义：

public static final int FLAG_DISMISS_HOME_KEY = 0x02000000;

this.getWindow().addFlags(FLAG_DISMISS_HOME_KEY);

解除home键屏蔽

this.getWindow().clearFlags(FLAG_DISMISS_HOME_KEY);

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