无法实例化ExpandableListAdapter类型

Question

我尝试在导航抽屉中创建一个ExpandableListView.我尝试了一个示例代码但是在编译之前我遇到了这个错误.

public class MainActivity extends Activity {

     ExpandableListAdapter listAdapter;
    ExpandableListView expListView;
    List<String> listDataHeader;
    HashMap<String, List<String>> listDataChild;

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

        // get the listview
        expListView = (ExpandableListView) findViewById(R.id.left_drawer);

        // preparing list data
        prepareListData();

   listAdapter = new ExpandableListAdapter(this, listDataHeader, listDataChild);

错误在这一行:listAdapter = new ExpandableListAdapter(this,listDataHeader,listDataChild);

为什么它说无法实例化ExpandableListAdapter类型？

Answer 1

ExpandableListAdapter也是android.widget.ExpandableListAdapter中的一个接口看起来你正在导入它,这是试图实例化你的本地ExpandableListAdapter类.

重命名你的ExpandableListAdapter.