set jsonarray list in autocompletetextview

Question

Ich versuche, Liste der Dienste von Web-Service zu holen und es zu Autocompletetextview hinzufügen. Angenommen, Sie geben "a" ein, erhalten Sie die folgende Liste von Diensten in der AutocompleteTextview. Ich denke, es ist ein JSON-Array, aber ich bekomme Fehler "Json error: Value Body Spa at 0 of type java.lang.String cannot be converted to JSONArray". Bitte korrigieren Sie mich, wenn ich das falsch mache.

// you get this json response on entering "a" 
 

 
[ 
 
    "Body Spa", 
 
    "Hair Cut", 
 
    "Hair massage", 
 
    "fghfghfgh", 
 
    "rtyrt", 
 
    "Gold Facial", 
 
    "Foot's massage" 
 
]

public class HomeOptionTwo extends Fragment implements TextWatcher{ 
 

 
    AutoCompleteTextView autoservice; 
 
    String[] list; 
 
    ArrayAdapter<String> adapter; 
 

 
    private static final String SERVICE = "http://192.168.200.1/android/spaservice"; 
 

 
    @Nullable 
 
    @Override 
 
    public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) { 
 
     return inflater.inflate(R.layout.homeoptiontwo, container, false); 
 
    } 
 

 
    @Override 
 
    public void onViewCreated(View view, @Nullable Bundle savedInstanceState) { 
 
     super.onViewCreated(view, savedInstanceState); 
 

 
     autoservice = (AutoCompleteTextView)view.findViewById(R.id.service); 
 

 

 
     autoservice.addTextChangedListener(this); 
 

 

 

 

 

 
    } 
 

 
    private void prepareMyList() { 
 

 
     StringRequest stringRequest = new StringRequest(Request.Method.POST, SERVICE, 
 
       new Response.Listener<String>() { 
 
        @Override 
 
        public void onResponse(String response) { 
 

 
         try { 
 
          //JSONObject jObj = new JSONObject(response); 
 

 
          JSONArray jsonarray = new JSONArray(response); 
 
          for (int i = 0; i < jsonarray.length(); i++) { 
 
           Toast.makeText(getActivity(), "services:" + jsonarray.getJSONArray(i), Toast.LENGTH_SHORT).show(); 
 

 
           adapter = new ArrayAdapter<String>(
 
             getActivity(), 
 
             android.R.layout.simple_dropdown_item_1line, 
 
             list); 
 

 
           autoservice.setAdapter(adapter); 
 
          } 
 

 

 

 

 

 
         } catch (JSONException e) { 
 
          // JSON error 
 
          e.printStackTrace(); 
 
          Toast.makeText(getActivity(), "Json error: " + e.getMessage(), Toast.LENGTH_LONG).show(); 
 
         } 
 
        } 
 
       }, new Response.ErrorListener() { 
 
      @Override 
 
      public void onErrorResponse(VolleyError error) { 
 
       Toast.makeText(getActivity(), "VolleyError" + error.toString(), Toast.LENGTH_LONG).show(); 
 
      } 
 
     }) { 
 
      @Override 
 
      protected Map<String, String> getParams() { 
 
       Map<String, String> params = new HashMap<String, String>(); 
 
       params.put("'phrase", autoservice.getText().toString()); 
 
       return params; 
 
      } 
 

 
     }; 
 

 
     RequestQueue requestQueue = Volley.newRequestQueue(getActivity()); 
 
     requestQueue.add(stringRequest); 
 
    } 
 

 

 
    @Override 
 
    public void beforeTextChanged(CharSequence s, int start, int count, int after) { 
 

 
    } 
 

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

 
    } 
 

 
    @Override 
 
    public void afterTextChanged(Editable s) { 
 

 
    } 
 
}

Answer 1

hier:

Toast.makeText(getActivity(), 
    "services:" + jsonarray.getJSONArray(i), Toast.LENGTH_SHORT).show(); 

jsonarray enthält String als Element statt JSONArray. Verwenden Sie optString oder getString, um den Wert von jsonarray JSONArray mit Index zu erhalten. like:

ArrayList<String> arrList=new ArrayList<String>(); 
for (int i = 0; i < jsonarray.length(); i++) { 
    String strValue=jsonarray.optString(i);        
    arrList.add(strValue); 
} 
    adapter = new ArrayAdapter<String>(
       getActivity(), 
       android.R.layout.simple_dropdown_item_1line, 
       arrList); 

    autoservice.setAdapter(adapter);