Android:BadTokenException: Unable to add window
Android:创建alertDialog报错(错误信息):
android.view.WindowManager$BadTokenException: Unable to add window -- token null is not for an application
at android.view.ViewRootImpl.setView(ViewRootImpl.java:525)
at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:407)
at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:321)
at android.view.WindowManagerImpl$CompatModeWrapper.addView(WindowManagerImpl.java:152)
at android.app.Dialog.show(Dialog.java:301)
报错原因:创建dialog时传的参数有误,下面的写法会报错
AlertDialog.Builder builder = new AlertDialog.Builder(getActivity().getApplicationContext());
参数传Context是有误的,应该传Activity 在context中不能增添窗体
正确的写法应该是:
AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
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