Android 错误：无法使用list.setAdapter（适配器）解析simbol列表

这是我的代码，它100%工作：

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
    View inflatedView = inflater.inflate(R.layout.t1, container, false);
    final ListView list = (ListView) inflatedView.findViewById(R.id.list);
    class json extends AsyncTask<String,String, List<MovieModel> > {
        ...
        @Override
        protected void onPostExecute(final List<MovieModel> result) {
            ...
            MainActivity.Adapter adapter = new MainActivity.Adapter(getActivity().getApplicationContext(), R.layout.row, result);
            list.setAdapter(adapter);
            list.setOnItemClickListener
            ...
        }
}

问题是列表，因为我无法从onCreateView中退出，因为如果我这样做，列表就没有定义

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
    ....
    new json();
}
class json extends AsyncTask<String,String, List<MovieModel> > {
    ...
    @Override
    protected void onPostExecute(final List<MovieModel> result) {
        ...
        MainActivity.Adapter adapter = new MainActivity.Adapter(getActivity().getApplicationContext(), R.layout.row, result);
        list.setAdapter(adapter);//this is an error now

@覆盖
CreateView上的公共视图（布局、充气机、视图组容器、捆绑包保存状态）{
....
新的json（）；
}
类json扩展异步任务{
...
@凌驾
受保护的void onPostExecute（最终列表结果）{
...
MainActivity.Adapter Adapter=新的MainActivity.Adapter（getActivity（）.getApplicationContext（），R.layout.row，result）；
list.setAdapter（adapter）；//这是一个错误

---

现在的错误是“无法解析simbol‘list’”。

快速解决方案是将

list

设置为类变量

public class MainActivty extends Activity {
    private ListView mList;

    private class json extends AsyncTask<String,String, List<MovieModel> > {
        ...
        @Override
        protected void onPostExecute(final List<MovieModel> result) {
        ...
        mList.setAdapter(adapter);
        ...
    }
}

这样，您就可以在

异步任务中保留所有数据处理，并在
活动中保留所有UI处理

public class MainActivty extends Activity {
    private ListView mList;

    private class json extends AsyncTask<String,String, List<MovieModel> > {
        ...
        @Override
        protected void onPostExecute(final List<MovieModel> result) {
        ...
        mList.setAdapter(adapter);
        ...
    }
}

public class MainActivty extends Activity {
    private ListView mList;

    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        View inflatedView = inflater.inflate(R.layout.t1, container, false);
        mList = (ListView) inflatedView.findViewById(R.id.list);
        ...
    }

    private void updateUI(final List<MovieModel> result> {
        MainActivity.Adapter adapter 
            = new MainActivity.Adapter(getActivity().getApplicationContext(), R.layout.row, result);
        mList.setAdapter(adapter);
        ...
    }

    private class json extends AsyncTask<String,String, List<MovieModel> > {
        ...
        @Override
        protected void onPostExecute(final List<MovieModel> result) {
        ...
        updateUI(result);
        ...
    }
}