在弹出窗口中单击微调器将导致WindowManager $ BadTokenException

Question

我已经查了几篇关于同一问题的文章，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，选择它时出现错误。弹出窗口用于添加引用，并且我已经声明了一个全局ViewGroup变量（即vg_references），该变量可用于在弹出窗口上检索组件。弹出窗口的代码如下。

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，这将调用一个函数以填充popupwindow中的组件（例如，文本字段，微调器，布局等）。此功能的一部分是使用数据库中的字符串列表填充微调器。

// 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);
}

当我单击此微调器时，程序崩溃并显示以下错误。谁能帮我解决这个问题。谢谢你们

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)

Answer 1

我可以使它起作用的唯一方法是使用对话框而不是PopupWindow。这样很好