Question

我正在尝试将数据（我选择的字符串）从listview中的一个片段传递到edittext中的另一个片段。在这种情况下，这怎么可能？

我可以使用捆绑包吗？如果是，怎么样？

第一个片段：

public class AirportPostFragment extends Fragment {

String stringsList[];
ArrayAdapter<String> adapter;
private ListView listViewAirports;
private EditText editSearch;
Context myContext;
XmlPullParser parser;
HashSet airport_list;
HashSet<String> list = new HashSet<>();

@Nullable
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
    View rootView = inflater.inflate(R.layout.fragment_airportpost, container, false);

    listViewAirports = (ListView) rootView.findViewById(R.id.listView_airports);
    editSearch = (EditText) rootView.findViewById(R.id.search_airport);
    adapter = new ArrayAdapter<>(getActivity(),android.R.layout.simple_list_item_1, stringsList);

    listViewAirports.setAdapter(adapter);
    listViewAirports.setOnItemClickListener(new AdapterView.OnItemClickListener() {
        @Override
        public void onItemClick(AdapterView<?> parent, View view, int position,
                                long id) {
            FragmentManager fm = getActivity().getFragmentManager();
            fm.beginTransaction().replace(R.id.content_main, new FinishPostFragment()).commit();
        }
    });

    searchAirport();
    return rootView;
}

SecondFragment：

public class FinishPostFragment extends Fragment{

@Nullable
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
    View rootView = inflater.inflate(R.layout.fragment_finishpost, container, false);

    return rootView;
}

@Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
    inflater.inflate(R.menu.finish_post_button, menu);
}
}

Answer 1

你应该使用Bundle 这是一个例子

FragmentManager fm = getActivity().getFragmentManager();
Fragment fragment = new FinishPostFragment();
Bundle bundle = new Bundle();
bundle.putString("data", "your string");
fragment.setArgument(bundle);
fm.beginTransaction().replace(R.id.content_main, fragment).commit();

并在你的第二个片段中：

String data = getArguments().getString("data");

并且有一种更清洁的方式。在第二个片段中，添加newInstance函数：

public static final String DATA_TAG="data";
private String mData;
public static FinishPostFragment newInstance(String data) {
        Bundle args = new Bundle();
        args.putString(DATA_TAG, data);
        FinishPostFragment fragment = new FinishPostFragment();
        fragment.setArguments(args);
        return fragment;
}

@Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        if (getArguments() != null)
            mData = getArguments().getString(DATA_TAG);
        }
    }

如何将从ListView中选择的项目String传递给另一个片段？

1 个答案: