Android监听和屏蔽home键

Android监听和屏蔽home键 监听home键 public void onUserLeaveHint(){ Toast.makeText(this, "监听HOME键", Toast.LENGTH_SHORT).show(); } 屏蔽home键 1. 在activity中加上这段代码就可以屏蔽home键(onKeyDown事件会捕捉到 home键)。 public void onAttachedToWindow() { this.getWindow().setType(WindowManager.LayoutParams.TYPE_KEYGUARD); super.onAttachedToWindow(); } public void onAttachedToWindow() { this.getWindow().setType(WindowManager.LayoutParams.TYPE_KEYGUARD); super.onAttachedToWindow(); } 2.因为android系统自己对与home键power键在PhoneWindowManager中做 了处理，不会返回到上层应用的。以下为系统源码: \frameworks\policies\base\phone\com\android\internal\policy\impl\PhoneWindowManager.java 1089行 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