彈出框內彈出框不打開

Question

我試圖打開彈出框內的微調框，但當我點擊它時什麼也沒有發生。

private void showTwitterPopUp() 
    { 
     View popUpView = getLayoutInflater().inflate(R.layout.twitter_popup, null); 
     mpopup = new PopupWindow(MainActivity.this); 
     mpopup.setWidth(this.getWindowManager().getDefaultDisplay().getWidth()); 
     mpopup.setHeight(this.getWindowManager().getDefaultDisplay().getHeight()/2); 
     mpopup.setContentView(popUpView); 
     mpopup.setAnimationStyle(android.R.style.Animation_Dialog); 
     mpopup.setFocusable(true); 
     mpopup.showAtLocation(popUpView, Gravity.CENTER, 200, 200);  
     mpopup.setBackgroundDrawable(new BitmapDrawable()); 
     mpopup.setOutsideTouchable(true); 

     account = (Button) popUpView.findViewById(R.id.button_create_account); 
     bday = (Button) popUpView.findViewById(R.id.button_birthday); 
     email = (EditText)popUpView.findViewById(R.id.edittext_email); 
     sex  = (Spinner) popUpView.findViewById(R.id.spinner_sex); 
     cancel = (Button) popUpView.findViewById(R.id.button_cancel); 

     ArrayAdapter<CharSequence> adapter1 = new ArrayAdapter<CharSequence>(this,android.R.layout.simple_spinner_item , AppConstants.SEX); 
     adapter1.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item); 
     sex.setAdapter(new CustomSpinnerAdapter(adapter1,getString(R.string.sex),this)); 
     } 

上單擊微調，然後解僱窗口給予例外。

07-16 13:07:35.434: E/AndroidRuntime(23444): java.lang.IllegalStateException: Calling with view android.widget.PopupWindow$PopupViewContainer@42e3c588 but the ViewAncestor is attached to null 
07-16 13:07:35.434: E/AndroidRuntime(23444): at android.view.WindowManagerImpl.removeViewImmediate(WindowManagerImpl.java:396) 
07-16 13:07:35.434: E/AndroidRuntime(23444): at android.view.WindowManagerImpl$CompatModeWrapper.removeViewImmediate(WindowManagerImpl.java:174) 
07-16 13:07:35.434: E/AndroidRuntime(23444): at android.widget.PopupWindow.dismiss(PopupWindow.java:1256) 
07-16 13:07:35.434: E/AndroidRuntime(23444): at android.widget.ListPopupWindow.dismiss(ListPopupWindow.java:612) 
07-16 13:07:35.434: E/AndroidRuntime(23444): at android.widget.Spinner.onDetachedFromWindow(Spinner.java:411) 
07-16 13:07:35.434: E/AndroidRuntime(23444): at android.view.View.dispatchDetachedFromWindow(View.java:11815) 
07-16 13:07:35.434: E/AndroidRuntime(23444): at android.view.ViewGroup.dispatchDetachedFromWindow(ViewGroup.java:2534) 
07-16 13:07:35.434: E/AndroidRuntime(23444): at android.view.ViewGroup.dispatchDetachedFromWindow(ViewGroup.java:2532) 
07-16 13:07:35.434: E/AndroidRuntime(23444): at android.view.ViewGroup.dispatchDetachedFromWindow(ViewGroup.java:2532) 
07-16 13:07:35.434: E/AndroidRuntime(23444): at android.view.ViewGroup.dispatchDetachedFromWindow(ViewGroup.java:2532) 
07-16 13:07:35.434: E/AndroidRuntime(23444): at android.view.ViewGroup.dispatchDetachedFromWindow(ViewGroup.java:2532) 
07-16 13:07:35.434: E/AndroidRuntime(23444): at android.view.ViewRootImpl.dispatchDetachedFromWindow(ViewRootImpl.java:2640) 
07-16 13:07:35.434: E/AndroidRuntime(23444): at android.view.ViewRootImpl.doDie(ViewRootImpl.java:3993) 
07-16 13:07:35.434: E/AndroidRuntime(23444): at android.view.ViewRootImpl.die(ViewRootImpl.java:3976) 
07-16 13:07:35.434: E/AndroidRuntime(23444): at android.view.WindowManagerImpl.removeViewImmediate(WindowManagerImpl.java:390) 
07-16 13:07:35.434: E/AndroidRuntime(23444): at android.view.WindowManagerImpl$CompatModeWrapper.removeViewImmediate(WindowManagerImpl.java:174) 
07-16 13:07:35.434: E/AndroidRuntime(23444): at android.widget.PopupWindow.dismiss(PopupWindow.java:1256) 
07-16 13:07:35.434: E/AndroidRuntime(23444): at com.incbit.mygivingbook.MainActivity.onClick(MainActivity.java:235) 
07-16 13:07:35.434: E/AndroidRuntime(23444): at android.view.View.performClick(View.java:4110) 
07-16 13:07:35.434: E/AndroidRuntime(23444): at android.view.View$PerformClick.run(View.java:17001) 
07-16 13:07:35.434: E/AndroidRuntime(23444): at android.os.Handler.handleCallback(Handler.java:615) 
07-16 13:07:35.434: E/AndroidRuntime(23444): at android.os.Handler.dispatchMessage(Handler.java:92) 
07-16 13:07:35.434: E/AndroidRuntime(23444): at android.os.Looper.loop(Looper.java:137) 
07-16 13:07:35.434: E/AndroidRuntime(23444): at android.app.ActivityThread.main(ActivityThread.java:4854) 
07-16 13:07:35.434: E/AndroidRuntime(23444): at java.lang.reflect.Method.invokeNative(Native Method) 
07-16 13:07:35.434: E/AndroidRuntime(23444): at java.lang.reflect.Method.invoke(Method.java:511) 
07-16 13:07:35.434: E/AndroidRuntime(23444): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:789) 
07-16 13:07:35.434: E/AndroidRuntime(23444): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:556) 
07-16 13:07:35.434: E/AndroidRuntime(23444): at dalvik.system.NativeStart.main(Native Method) 

Answer 1

首先，你需要與popupView來初始化PopupWindow其中創建：

mpopup = new PopupWindow(popUpView);

然後，你需要的父觀點傳遞給showAtLocation代替popUpView：

View layout = findViewById(R.layout.twitter_layout); 
mpopup.showAtLocation(layout, Gravity.CENTER, 200, 200); 

來自developer.a ndroid.com：

參數：父父視圖從