无法解析方法getListView和setListAdapter(Android) [英] Cannot Resolve Method getListView and setListAdapter (Android)

问题描述

当我尝试使用标题中列出的任何一种方法(getListView()和setListAdapter())时，我收到一条错误消息，指出该方法无法解析.

When I try to use either of the methods listed in the title (getListView() and setListAdapter()), I get an error that says the methods cannot be resolved.

这是我的代码:

 public void onResume() {
    super.onResume();

    mCurrentUser = ParseUser.getCurrentUser();
    mFriendsRelation = mCurrentUser.getRelation(ParseConstants.KEY_FRIENDS_RELATION);
    mFriendsRelation.getQuery().findInBackground(new FindCallback<ParseUser>() {
        @Override
        public void done(List<ParseUser> friends, ParseException e) {
            List<ParseUser> mFriends = friends;
            String[] usernames = new String[mFriends.size()];
            int i = 0;
            for(ParseUser user: mFriends){
                usernames[i] = user.getUsername();
                i++;
            }
            ArrayAdapter<String> adapter = new ArrayAdapter<String>(
                    getListView().getContext(),android.R.layout.simple_list_item_1,
                    android.R.layout.simple_list_item_checked, usernames);
            setListAdapter(adapter);
        }


    });

这在名为MainActivity的类中.

This is inside of a class called MainActivity.

推荐答案

您的MainActivity必须扩展ListActivity

public class MainActivity extends ListActivity {

转到此 Android列表视图以获取更多信息.

Go to this Android List View for more information.

这篇关于无法解析方法getListView和setListAdapter(Android)的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！