android 点击TabHost选显卡弹出PopupWindow时报错！

Question

如上图，当我点击更多时会弹出一个PopupWindow，可是总是报错，错误信息如下：
05-02 03:13:22.999: E/AndroidRuntime(1404): FATAL EXCEPTION: main
05-02 03:13:22.999: E/AndroidRuntime(1404): java.lang.IllegalStateException: The specified child already has a parent. You must call removeView() on the child's parent first.
05-02 03:13:22.999: E/AndroidRuntime(1404):  at android.view.ViewGroup.addViewInner(ViewGroup.java:1970)
05-02 03:13:22.999: E/AndroidRuntime(1404):  at android.view.ViewGroup.addView(ViewGroup.java:1865)
05-02 03:13:22.999: E/AndroidRuntime(1404):  at android.view.ViewGroup.addView(ViewGroup.java:1845)
05-02 03:13:22.999: E/AndroidRuntime(1404):  at android.widget.PopupWindow.preparePopup(PopupWindow.java:808)
05-02 03:13:22.999: E/AndroidRuntime(1404):  at android.widget.PopupWindow.showAtLocation(PopupWindow.java:681)
05-02 03:13:22.999: E/AndroidRuntime(1404):  at com.shuangchi.activity.MainActivity.openPopupWindow(MainActivity.java:209)
05-02 03:13:22.999: E/AndroidRuntime(1404):  at com.shuangchi.activity.MainActivity.access$1(MainActivity.java:207)
05-02 03:13:22.999: E/AndroidRuntime(1404):  at com.shuangchi.activity.MainActivity$1.onClick(MainActivity.java:88)
05-02 03:13:22.999: E/AndroidRuntime(1404):  at android.view.View.performClick(View.java:2408)
05-02 03:13:22.999: E/AndroidRuntime(1404):  at android.view.View$PerformClick.run(View.java:8816)
05-02 03:13:22.999: E/AndroidRuntime(1404):  at android.os.Handler.handleCallback(Handler.java:587)
05-02 03:13:22.999: E/AndroidRuntime(1404):  at android.os.Handler.dispatchMessage(Handler.java:92)
05-02 03:13:22.999: E/AndroidRuntime(1404):  at android.os.Looper.loop(Looper.java:123)
05-02 03:13:22.999: E/AndroidRuntime(1404):  at android.app.ActivityThread.main(ActivityThread.java:4627)
05-02 03:13:22.999: E/AndroidRuntime(1404):  at java.lang.reflect.Method.invokeNative(Native Method)
05-02 03:13:22.999: E/AndroidRuntime(1404):  at java.lang.reflect.Method.invoke(Method.java:521)
05-02 03:13:22.999: E/AndroidRuntime(1404):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
05-02 03:13:22.999: E/AndroidRuntime(1404):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
05-02 03:13:22.999: E/AndroidRuntime(1404):  at dalvik.system.NativeStart.main(Native Method)代码如下：
private void init()
{
//九宫格适配器
adapter = new GridViewAdapter(this, titles, imgIds);

//初始化GridView
View view = LayoutInflater.from(MainActivity.this).inflate(R.layout.activity_morefunction, null);
gridView = (GridView) view.findViewById(R.id.gridview);
gridView.setAdapter(adapter);
//初始化PopupWindow
popupWindow = new PopupWindow(gridView, LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT, true);
popupWindow.setBackgroundDrawable(new BitmapDrawable());
} private void event()
{
tabWidget.getChildAt(4).setOnClickListener(new View.OnClickListener()
{

@Override
public void onClick(View v)
{
parent = MainActivity.this.findViewById(android.R.id.tabhost);
openPopupWindow();
}
});
} /***
 * 显示PopupWindow
 */
private void openPopupWindow()
{
popupWindow.showAtLocation(parent, Gravity.CENTER,0,0);
}求解啊！怎么样才能正常显示，急急急！tabhostAndroidPopupWindow

Answer 1

提示的很明显的你的parenta 有问题 你可以换个其他布局的地方添加以下你的PopupWindow试试看

Answer 2

我知道是parent有问题，我希望的效果是PopupWindow显示在TabHost上

Answer 3

viewgroup先removeallchilds，再添加child就可以了。错误是那个child已经有一个parent了，再给他一个parent就会报错。

Answer 4

 popupWindow = new PopupWindow(view, LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT, true);
    popupWindow.setBackgroundDrawable(new BitmapDrawable());

Answer 5

你初始化PopupWindow干嘛用GridView

Answer 6

我要在PopupWindow中显示GridView啊！

Answer 7

显示popUpWindow对象之前
if(contentView != null && contentView.getParent() != null) {
((ViewGroup)contentView.getParent()).removeAllViews();
}