/**
* 模拟按home键
* 程序退到后台运行
* @param context
*/
private void imitatePressHome(Context context)
{
Intent intent = new Intent(Intent.ACTION_MAIN);
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
intent.addCategory(Intent.CATEGORY_HOME);
context.startActivity(intent);
}
/**
* 注册home键监听
* @param context
*/
private void registerHomeReceiver(Context context)
{
context.registerReceiver(mHomeKeyEventReceiver, new IntentFilter(
Intent.ACTION_CLOSE_SYSTEM_DIALOGS));
}
/**
* home键处理
*/
private BroadcastReceiver mHomeKeyEventReceiver = new BroadcastReceiver() {
String SYSTEM_REASON = "reason";
String SYSTEM_HOME_KEY = "homekey";
String SYSTEM_HOME_KEY_LONG = "recentapps";
@Override
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
if (action.equals(Intent.ACTION_CLOSE_SYSTEM_DIALOGS)) {
String reason = intent.getStringExtra(SYSTEM_REASON);
if (TextUtils.equals(reason, SYSTEM_HOME_KEY)) {
//表示按了home键,程序到了后台
Toast.makeText(context, "home pressed", 1000).show();
}else if(TextUtils.equals(reason, SYSTEM_HOME_KEY_LONG)){
//表示长按home键,显示最近使用的程序列表
Toast.makeText(context, "home long pressed", 1000).show();
}
}
}
};
/**
* home键屏蔽
*/
@Override
public void onAttachedToWindow() {
// TODO Auto-generated method stub
this.getWindow().setType(WindowManager.LayoutParams.TYPE_KEYGUARD);
super.onAttachedToWindow();
}
在4.0 以后，无论是在onCreate()还是onAttachedToWindow()中都不能重设window的Type，想用此法屏蔽Home键无效！
4.0以上执行这段代码会报java.lang.IllegalArgumentException: Window type can not be changed after the window is added.至于怎么屏蔽，现在网上还没有很好的解决办法，mtk的到是有解决办法，其他平台的就不行了....除非修改底层框架
mtk的解决办法：
public static final int FLAG_HOMEKEY_DISPATCHED = 0x80000000;
在onCreate中执行
this.getWindow().setFlags(FLAG_HOMEKEY_DISPATCHED, FLAG_HOMEKEY_DISPATCHED);