Question

Android 如何屏蔽Home键

Android 如何屏蔽Home键（长按短按都不起作用）。[*]package com.test.qiao;[*][*]import android.app.Activity;[*]import android.os.Bundle;[*]import android.view.KeyEvent;[*]import android.view.WindowManager;[*][*]public class ZZZActivity extends Activity {[*][*] private boolean flag = true;//true位屏蔽，false位不屏蔽 [*][*] @Override[*] public void onCreate(Bundle savedInstanceState) {[*] super.onCreate(savedInstanceState);[*] setContentView(R.layout.main);[*] }[*] @Override[*] public void onAttachedToWindow() {[*] if(flag) {[*] this.getWindow().setType(WindowManager.LayoutParams.TYPE_KEYGUARD);[*] }[*] super.onAttachedToWindow();[*] }[*][*] @Override[*] public boolean onKeyDown(int keyCode, KeyEvent event) {[*] if(keyCode == KeyEvent.KEYCODE_HOME){[*] return true;[*] }[*] return super.onKeyDown(keyCode, event);[*] }[*]}

Answer 1

public void onAttachedToWindow()
{
this.getWindow().setType(WindowManager.LayoutParams.TYPE_KEYGUARD);
super.onAttachedToWindow();
}
在你的Activity中加上这个方法就行了
下面是FRAMWORK层的代码，里面的type == WindowManager.LayoutParams.TYPE_KEYGUARD条件是返回FALSE

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;
}
}
}

Answer 2

Home键的屏蔽只能在Framework层做修改。所以，对一般应用来讲，实现不了Home键的屏蔽。b

Answer 3

如果想屏蔽到的话直接加权限禁止Home键
<uses-permission android:name="android.permission.DISABLE_KEYGUARD"/>

Answer 4

把Home键的点击事件、长按事件重写