如何动态更新AutoCompleteTextView TextChangedListener上的下拉列表？

Question

我想用状态的名称更新onTextChanged（）的下拉列表。 当我键入一个字母表时，该列表应该用来自JSON响应的数据进行更新。

例如，如果我键入“a”，那么列表应显示所有具有“a”的结果。

如果我写“del”，那么列表将显示“Delhi”。

API工作正常，因为我可以得到响应，我键入一个字母。 但是UI不能正常工作或工作正常。

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

卸下onTextChanged（）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 
       ); 
      } 

     } 

在响应块添加这些行，第一清除mList。

@覆盖 公共无效onResponseListner（字符串响应）{

 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(); 
     } 
    }