Question

我想用状态名更新onTextChanged（）的下拉列表。当我输入字母表时，列表应该使用JSON响应中的数据进行更新。

例如，如果我输入“a”，那么列表应显示所有带有“a”的结果。

如果我写“del”，那么列表将显示“Delhi”。

API工作正常，因为我能够在输入字母时获得响应。但UI无法正常工作或正常工作。

EditProfileFragment：

public class EditProfileFragment extends Fragment {
AutoCompleteTextView mAutoCompleteTextView;
private List<StateModel> mList = new ArrayList<>();
private AreaAdapter mAdapter;

@Override
public void onCreate(@Nullable Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
}

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

    mAutoCompleteTextView = (AutoCompleteTextView) view.findViewById(R.id.autoComplete);

    mAutoCompleteTextView.addTextChangedListener(new TextWatcher() {
        @Override
        public void beforeTextChanged(CharSequence s, int start, int count, int after) {

        }

        @Override
        public void onTextChanged(CharSequence s, int start, int before, int count) {
            getStateList(s.toString());

        }

        @Override
        public void afterTextChanged(Editable s) {

        }
    });
    return view;
}

@Override
public void onActivityCreated(@Nullable Bundle savedInstanceState) {
    super.onActivityCreated(savedInstanceState);
}

private void getStateList(CharSequence s) {
    String url = "https://example.com/search/name/" + s;
    final HashMap<String, String> params = new HashMap<String, String>();

    EzApp.networkController.networkCall(getActivity(), url, params, new NetworkCallController.OnResponse() {
        @Override
        public void onResponseListner(String response) {

            Log.i("EPF STATES:--", response.toString());
            try {
                JSONArray jsonArray = new JSONArray(response);
                for (int j = 0; j < jsonArray.length(); j++) {
                    JSONObject obj = jsonArray.getJSONObject(j);
                    StateModel model = new StateModel();
                    model.setName(obj.getString("name"));
                    model.setId(obj.getString("id"));
                    mList.add(model);
                }
                mAdapter = new AreaAdapter(getActivity(),
                        android.R.layout.simple_spinner_item, mList,
                        true);
                mAutoCompleteTextView.setAdapter(mAdapter);
                mAdapter.notifyDataSetChanged();
            } catch (JSONException e) {
                e.printStackTrace();
            }
        }
    });
}
}

AreaAdapter：

public class AreaAdapter extends ArrayAdapter<StateModel> {
Context context;
Boolean enabled;

public AreaAdapter(Context context, int resourceId,
                   List<StateModel> item, boolean enabled) {
    super(context, resourceId, item);
    this.enabled = enabled;
    this.context = context;
}

/* private view holder class */
private static class ViewHolder {
    private TextView txtName;
}

@Override
public View getView(final int position, View convertView, ViewGroup parent) {

    final StateModel rowItem = getItem(position);

    View row = null;
    if (convertView == null) {
        ViewHolder holder = new ViewHolder();
        LayoutInflater inflater = (LayoutInflater) context
                .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        row = inflater.inflate(R.layout.area_autosuggest_row_list, null);
        holder.txtName = (TextView) row.findViewById(R.id.txt_name);
        row.setTag(holder);
    } else {
        row = convertView;
    }
    final ViewHolder holder = (ViewHolder) row.getTag();
    holder.txtName.setText(rowItem.getName());

    return row;
}
}

API响应：

1

[{"id":"1","name":"Andaman and Nicobar"},{"id":"2","name":"Andhra Pradesh"},
{"id":"3","name":"Arunachal Pradesh"},{"id":"4","name":"Assam"},
{"id":"25","name":"Nagaland"},{"id":"24","name":"Mizoram"}]

2

[{"id":"10","name":"Delhi"}]

Answer 1

从onTextChanged（）中删除您的代码，并添加此

  private Timer mTimer =new Timer();
  private final long DELAY = 1500;


 @Override
        public void afterTextChanged(final Editable editable) {

            mTimer.cancel();
            if (!editable.toString().equals("")) {
                mTimer = new Timer();
                mTimer.schedule(
                        new TimerTask() {
                            @Override
                            public void run() {
                                runOnUiThread(new TimerTask() {
                                    @Override
                                    public void run() {
                                         getStateList(editable.toString());
                                    }
                                });

                            }
                        },
                        DELAY
                );
            }

        }

在响应块中添加以下行，首先清除mList。

@覆盖 public void onResponseListner（String response）{

        Log.i("EPF STATES:--", response.toString());
        try {
            mList.clear();
            mList = new ArrayList<>();

            JSONArray jsonArray = new JSONArray(response);
            for (int j = 0; j < jsonArray.length(); j++) {
                JSONObject obj = jsonArray.getJSONObject(j);
                StateModel model = new StateModel();
                model.setName(obj.getString("name"));
                model.setId(obj.getString("id"));
                mList.add(model);
            }
             mAdapter = new AreaAdapter(getActivity(),
                    android.R.layout.simple_spinner_item, mList,
                    true);
            mAutoCompleteTextView.setAdapter(mAdapter);
            mAutoCompleteTextView.showDropDown();
        } catch (JSONException e) {
            e.printStackTrace();
        }
    }

如何在AutoCompleteTextView TextChangedListener上动态更新下拉列表？

1 个答案: