Android home screen button

2011-05-31  来源:本站原创  分类:Mobile  人气:342 

In the activity, add the following code can shield home

        public boolean onKeyDown(int keyCode, KeyEvent event)
                // TODO Auto-generated method stub
                //  Press the return button on the keyboard 

                if (keyCode == KeyEvent.KEYCODE_HOME)
                        return true;
                        return super.onKeyDown(keyCode, event);


Premise is to rewrite onAttachedToWindow () this method.

        public void onAttachedToWindow()

Because the android system key PhoneWindowManager own home to do a deal, would not return to the upper application. View Source Code:

\ Frameworks \ policies \ base \ phone \ com \ android \ internal \ policy \ impl \ 1089 lines

if (code == KeyEvent.KEYCODE_HOME) {
            // If a system window has focus, then it doesn't make sense
            // right now to interact with applications.
            WindowManager.LayoutParams attrs = win != null ? win.getAttrs() : null;
            if (attrs != null) {
                final int type = attrs.type;
                if (type == WindowManager.LayoutParams.TYPE_KEYGUARD
                        || type == WindowManager.LayoutParams.TYPE_KEYGUARD_DIALOG) {
                    // the "app" is keyguard, so give it the key
                    return false;
                final int typeCount = WINDOW_TYPES_WHERE_HOME_DOESNT_WORK.length;
                for (int i=0; i<typeCount; i++) {
                    if (type == WINDOW_TYPES_WHERE_HOME_DOESNT_WORK[i]) {
                        // don't do anything, but also don't pass it to the app
                        return true;

Note, activity in the rewrite onAttachedToWindow () method requires api 5 or more

Table attached to API Level

Android 2.3 - API Level 9

2.2 - 8

2.1 - 7

2 .. 0.1 - 6

2.0 - 5

1.6 - 4

1.5 -3

1.1 - 2

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