在弹出窗口中单击微调器会导致 WindowManager$BadTokenException [英] Clicking spinner within popup window causes WindowManager$BadTokenException

问题描述

我已经针对同一问题查找了几个帖子，但似乎无法解决我的问题.我在整个应用程序中都使用了微调器，它们运行良好.当我尝试在弹出窗口中使用微调器时，在选择它时出现错误.弹出窗口是添加引用，我已经声明了一个全局 ViewGroup 变量(即 vg_references)，可用于检索弹出窗口上的组件.弹出窗口的代码如下.

I've looked up a couple of posts for the same problem but can't seem to resolve my issue. I've used spinners throughout my application and they are working fine. It's when I try to use a spinner within a popupwindow, I get an error when selecting it. The popup window is to add references and I've declared a global ViewGroup variable (i.e. vg_references) which can be used to retrieve the components on the popup window. The code to popup the window is as follows.

LayoutInflater inflater = (LayoutInflater) this.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
vg_references = (ViewGroup)inflater.inflate(R.layout.reference, null, false);

pw_references = new PopupWindow(vg_references, 
    this.getWindowManager().getDefaultDisplay().getWidth()/100 * 75,
    this.getWindowManager().getDefaultDisplay().getHeight()/100 * 50,
    true);
pw_references.setFocusable(true);
pw_references.showAtLocation((View)view.getParent(), Gravity.CENTER, 0, 0);

this.populateReferenceView();   

然后调用一个函数来填充弹出窗口中的组件(例如文本字段、微调器、布局等...).此函数的一部分是使用数据库中的字符串列表填充微调器.

This then calls a function to populate the components within the popupwindow (e.g. textfields, spinners, layouts, etc...). Part of this function is to populate a spinner with a list of strings from a database.

// Find the spinner
Spinner spinReferenceSourceTypes = (Spinner) vg_references.findViewById(R.id.spin_referencesSourceTypes);          

// Retrieve the list of reference source types and create an array adapter to attach to the list 
ArrayAdapter<String> dataAdapter = new ArrayAdapter<String>(
    this, android.R.layout.simple_spinner_item, databaseHelper.getReferenceSourceTypes());
dataAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
spinReferenceSourceTypes.setAdapter(dataAdapter);

// If there's only 1 item in the dropdown list, disable the dropdown list
if(spinReferenceSourceTypes.getCount() < 2) {
    spinReferenceSourceTypes.setEnabled(false);
}
else {
    spinReferenceSourceTypes.setEnabled(true);
}

当我点击这个微调器时，程序崩溃并出现以下错误.任何人都可以帮我解决这个问题.谢谢大家

When I click on this spinner, the program crashes with the following error. Can anyone please help me with this problem. Thank you all

12-04 18:43:41.507: E/AndroidRuntime(30504): FATAL EXCEPTION: main
12-04 18:43:41.507: E/AndroidRuntime(30504): android.view.WindowManager$BadTokenException: Unable to add window -- token android.view.ViewRootImpl$W@414c67c8 is not valid; is your activity running?
12-04 18:43:41.507: E/AndroidRuntime(30504):    at android.view.ViewRootImpl.setView(ViewRootImpl.java:520)
12-04 18:43:41.507: E/AndroidRuntime(30504):    at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:313)
12-04 18:43:41.507: E/AndroidRuntime(30504):    at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:215)
12-04 18:43:41.507: E/AndroidRuntime(30504):    at android.view.WindowManagerImpl$CompatModeWrapper.addView(WindowManagerImpl.java:140)
12-04 18:43:41.507: E/AndroidRuntime(30504):    at android.view.Window$LocalWindowManager.addView(Window.java:537)
12-04 18:43:41.507: E/AndroidRuntime(30504):    at android.widget.PopupWindow.invokePopup(PopupWindow.java:992)
12-04 18:43:41.507: E/AndroidRuntime(30504):    at android.widget.PopupWindow.showAsDropDown(PopupWindow.java:901)
12-04 18:43:41.507: E/AndroidRuntime(30504):    at android.widget.ListPopupWindow.show(ListPopupWindow.java:595)
12-04 18:43:41.507: E/AndroidRuntime(30504):    at android.widget.Spinner$DropdownPopup.show(Spinner.java:764)
12-04 18:43:41.507: E/AndroidRuntime(30504):    at android.widget.Spinner.performClick(Spinner.java:457)
12-04 18:43:41.507: E/AndroidRuntime(30504):    at android.view.View$PerformClick.run(View.java:14152)
12-04 18:43:41.507: E/AndroidRuntime(30504):    at android.os.Handler.handleCallback(Handler.java:605)
12-04 18:43:41.507: E/AndroidRuntime(30504):    at android.os.Handler.dispatchMessage(Handler.java:92)
12-04 18:43:41.507: E/AndroidRuntime(30504):    at android.os.Looper.loop(Looper.java:137)
12-04 18:43:41.507: E/AndroidRuntime(30504):    at android.app.ActivityThread.main(ActivityThread.java:4514)
12-04 18:43:41.507: E/AndroidRuntime(30504):    at java.lang.reflect.Method.invokeNative(Native Method)
12-04 18:43:41.507: E/AndroidRuntime(30504):    at java.lang.reflect.Method.invoke(Method.java:511)
12-04 18:43:41.507: E/AndroidRuntime(30504):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:790)
12-04 18:43:41.507: E/AndroidRuntime(30504):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:557)
12-04 18:43:41.507: E/AndroidRuntime(30504):    at dalvik.system.NativeStart.main(Native Method)

推荐答案

我可以让它发挥作用的唯一方法是使用 Dialog 而不是 PopupWindow.那样效果很好

The only way I could get this to work was to use a Dialog rather than a PopupWindow. It works fine that way

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