java - 类 'Anonymous class derived from PlaceSelectedListener' 必须声明为抽象或实现抽象方法

Question

我正在尝试使用来自 Google 网站的一些代码来实现 google 自动完成小部件。我在这一行有一个错误:

autocompleteFragment.setOnPlaceSelectedListener(new PlaceSelectionListener()

错误是: 类“派生自 PlaceSelectedListener 的匿名类”必须声明为抽象类或在“PlaceSelectionListener”中实现抽象方法“onError(Status)”

还有这个错误:

@Override
public void onError(AsyncTask.Status status

错误是:方法没有覆盖其父类(super class)中的方法

我可以深入了解如何解决这些错误吗？

public class Preferences extends FragmentActivity  {

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

    final TextView text = (TextView)findViewById(R.id.textView3);
    final String TAG = Preferences.class.getSimpleName();


    PlaceAutocompleteFragment autocompleteFragment = (PlaceAutocompleteFragment)
            getFragmentManager().findFragmentById(R.id.place_autocomplete_fragment);

    autocompleteFragment.setOnPlaceSelectedListener(new PlaceSelectionListener() {
        @Override
        public void onPlaceSelected(Place place) {
            // TODO: Get info about the selected place.
            Log.i(TAG, "Place: " + place.getName());

            String placeDetailsStr = place.getName() + "\n"
                    + place.getId() + "\n"
                    + place.getLatLng().toString() + "\n"
                    + place.getAddress() + "\n"
                    + place.getAttributions();
            text.setText(placeDetailsStr);
        }

       @Override
        public void onError(AsyncTask.Status status) {
            // TODO: Handle the error.
            Log.i(TAG, "An error occurred: " + status);
        }
    });


}

Answer 1

我找到了解决方案: 我改变了:

 @Override
            public void onError(AsyncTask.Status status) {
                // TODO: Handle the error.
                Log.i(TAG, "An error occurred: " + status);
            }

到:

@Override
            public void onError(Status status) {
                Log.i(TAG, "An error occurred: " + status);
            }