自定义列表片段中的视图.找不到布局

Question

我在片段中有一个列表视图并且工作正常。现在我正在尝试做一个自定义列表视图，但我没有找到。 使用simple_list_item_1工作正常，列表项不起作用。

@Override
public void onActivityCreated(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onActivityCreated(savedInstanceState);
ListView mListView = (ListView)getActivity().findViewById(R.id.list);
//mArrayAdapter = new ArrayAdapter<String>(getContext(), android.R.layout.simple_list_item_1, android.R.id.text1, songs);
mArrayAdapter = new ArrayAdapter<String>(getContext(), android.R.layout.list_item, android.R.id.text1, songs);
mListView.setAdapter(mArrayAdapter);
}

错误

error: cannot find symbol
mArrayAdapter = new ArrayAdapter<String>(getContext(), android.R.layout.list_item, android.R.id.text1, songs);
     ^

符号：可变list_item

Answer 1

如果没有崩溃并且您的列表视图未创建，请尝试此操作，

覆盖onViewCreated()并在其中声明listview并使用view而不是getActivity(( 喜欢这个

ListView mListView = (ListView)view.findViewById(R.id.list);

和

mArrayAdapter = new ArrayAdapter<String>(getActivity(), android.R.layout.list_item, android.R.id.text1, songs);

在那里复制和粘贴代码

@Override
public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
ListView mListView = (ListView)view.findViewById(R.id.list);
//mArrayAdapter = new ArrayAdapter<String>(getContext(), android.R.layout.simple_list_item_1, android.R.id.text1, songs);
mArrayAdapter = new ArrayAdapter<String>(getActivity(), android.R.layout.list_item, android.R.id.text1, songs);
mListView.setAdapter(mArrayAdapter);
}

Answer 2

答案

@SuppressLint("ResourceType")
@Override
public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
ListView mListView = (ListView)view.findViewById(R.id.list);
mArrayAdapter = new ArrayAdapter<String>(getActivity(), R.layout.list_item , R.id.text2, songs);
mListView.setAdapter(mArrayAdapter);
}