java - android:没有这样的实例字段

Question

我正在尝试使用 Web 服务通过 AsyncTask 获取数据。 我不知道为什么当我声明全局变量“arrayList1”并且它已经初​​始化时，但我收到“arrayList1”错误并且它跳过了新的 AsyncTask 中的操作。

private Context mContext;
private ArrayList arrayList1;
private ArrayList<List> mData;
private ListView mListView;
private ListViewAdapter mAdapter;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

mContext = getApplicationContext();
mListView = (ListView)findViewById(R.id.listView1);
mData = new ArrayList<List>();
mData = LoadListView();
}

public ArrayList<List> LoadListView(Void...params) {
    arrayList1 = new ArrayList();
    //here error occurred.
    new AsyncTask<Void, Void, ArrayList<List>>() {
        @Override
        protected ArrayList<List> doInBackground(Void...params) {
            arrayList1 = GetData(); 
            //GetData() is another function will return a arraylist from web service.
            return arrayList1;
        }

        @Override
        protected void onPostExecute(ArrayList<List> arrayList) {
            mAdapter = new ListViewAdapter(arrayList, mContext);
            mAdapter.notifyDataSetChanged();
            mListView.setAdapter(mAdapter);
        }
    }.execute((Void[]) params); //error occurred skipped directly to here.

    return arrayList1;
}

Answer 1

如果您使用 proGuard，请务必检查 gradle 中的 minifyEnabled 和 ShrinkResources 以找到解决方案