可以从Fragment类中调用PlaceAutocompleteFragment(覆盖模式)

Question

我正在开发我的项目来创建一个带有导航抽屉的活动(扩展AppCompatActivity),用于在多个Fragment之间切换,其中一个是MapFragment(使用MapView实现扩展Fragment).我想在MapFragment类中调用Google提供的AutoComplete Widget.

这是我在MapFragment类中的代码

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

    AutocompleteFilter typeFilter = new AutocompleteFilter.Builder()
            .setTypeFilter(AutocompleteFilter.TYPE_FILTER_ADDRESS)
            .build();
    autocompleteFragment.setFilter(typeFilter);

    autocompleteFragment.setOnPlaceSelectedListener(new PlaceSelectionListener() {
        @Override
        public void onPlaceSelected(Place place) {
            // TODO: Get info about the selected place.
            String placeDetailsStr = place.getName() + "\n"
                    + place.getId() + "\n"
                    + place.getLatLng().toString() + "\n"
                    + place.getAddress() + "\n"
                    + place.getAttributions();
            Log.i("OnPlaceSelected", placeDetailsStr);
            map.moveCamera(CameraUpdateFactory.newLatLngZoom(place.getLatLng(), 15));

        }

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

语法错误是在

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

说

不可转换型; 无法将'android.support.v4.app.Fragment'投射到'com.google.android.gms.location.places.ui.PlaceAutocompleteFragment'

但是当我将这组代码放在MainActivity中时,它的工作正常.所以我想知道是否有任何方法可以在Fragment中调用AutoComplete Widget它是不可能的.

任何答案将不胜感激.:)

Answer 1

使用getActivity()

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