使用Robolectric测试DialogFragments

Question

我有几个关于DialogFragment使用Robolectric 测试类的问题,因为我在Internet上遇到了关于这个主题的完全缺乏的信息.

1. 传递给onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)谁的正确论据是什么？

2. 我无法传递参数DialogFragment,我正在使用以下方法:

   activity = new Activity();
   dialog = new DialogFragment();
   Bundle bundle = new Bundle();
   dialog.setArguments(bundle);
   FragmentManager fm = activity.getSupportFragmentManager();
   FragmentTransaction ft = fm.beginTransaction();
   ft.add(dialog, "fragment");
   ft.commit();
   

每当代码尝试访问参数时,它都会崩溃NullPointerException.

将高度赞赏有关这些主题的任何想法.

Answer 1

你用错了DialogFragment。您不应该提交片段，而应该show调用DialogFragment.

activity = new Activity();
dialog = new DialogFragment();
Bundle bundle = new Bundle();
dialog.setArguments(bundle);
FragmentManager fm = activity.getSupportFragmentManager();
FragmentTransaction ft = fm.beginTransaction();
dialog.show(ft, "fragment");