JSON Parsing in Android mit Volley Lib

Question

Ich habe die unten json Antwort.

[ 
{ 
    "id" : "001", 
    "firstName" : "Theo", 
    "lastName" : "Tziomakas", 
    "role" : "CEO", 
    "profileImageURL" : "http://developers.mub.lu/resources/profilePlaceholder.png" 
}, 
{ 
    "teamName" : "iOS", 
    "members" : [ 
     { 
      "id" : "002", 
      "firstName" : "Olly", 
      "lastName" : "Berry", 
      "role" : "iOS Team Lead", 
      "profileImageURL" : "http://developers.mub.lu/resources/profilePlaceholder.png", 
      "teamLead" : true 
     }, 
     { 
      "id" : "003", 
      "firstName" : "James", 
      "lastName" : "Frost", 
      "role" : "iOS Developer", 
      "profileImageURL" : "http://developers.mub.lu/resources/profilePlaceholder.png" 
     } 
     ] 
    } 
] 

Und wollen das teamName JSON-Objekt und teamName JSON-Array lesen. Diese

ist, was ich tue,

public void onResponse(JSONArray response) { 
      Log.d("Theo", response.toString()); 

      for(int i = 0;i<response.length();i++){ 

       try { 
        //[{"id":"001","firstName":"Mark","lastName":"Mason","role":"CEO","profileImageURL":"http:\/\/developers.mub.lu\/resources\/profilePlaceholder.png"}, 
        // {"teamName":"iOS","members":[{"id":"002","firstName":"Olly","lastName":"Berry","role":"iOS Team Lead","profileImageURL":"http:\/\/developers.mub.lu\/resources\/profilePlaceholder.png","teamLead":true},{"id":"003","firstName":"James","lastName":"Frost","role":"iOS Developer","profileImageURL":"http:\/\/developers.mub.lu\/resources\/profilePlaceholder.png"},{"id":"004","firstName":"Liam","lastName":"Nichols","role":"iOS Developer","profileImageURL":"http:\/\/developers.mub.lu\/resources\/profilePlaceholder.png"},{"id":"005","firstName":"Chris","lastName":"Watson","role":"iOS Developer","profileImageURL":"http:\/\/developers.mub.lu\/resources\/profilePlaceholder.png"},{"id":"006","firstName":"Richard","lastName":"Turton","role":"iOS Developer","profileImageURL":"http:\/\/developers.mub.lu\/resources\/profilePlaceholder.png"},{"id":"007","firstName":"Matt","lastName":"Colliss","role":"iOS Developer","profileImageURL":"http:\/\/developers.mub.lu\/resources\/profilePlaceholder.png"},{"id":"008","firstName":"David","lastName":"Gibson","role":"iOS Developer","profileImageURL":"http:\/\/developers.mub.lu\/resources\/profilePlaceholder.png"},{"id":"009","firstName":"Tom","lastName":"Guy","role":"iOS Developer","profileImageURL":"http:\/\/developers.mub.lu\/resources\/profilePlaceholder.png"},{"id":"010","firstName":"Rich","lastName":"Hodgkins","role":"iOS Developer","profileImageURL":"http:\/\/developers.mub.lu\/resources\/profilePlaceholder.png"}]},{"teamName":"Android","members":[{"id":"011","firstName":"David","lastName":"Branton","role":"Android Team Lead","profileImageURL":"http:\/\/developers.mub.lu\/resources\/profilePlaceholder.png","teamLead":true},{"id":"012","firstName":"Dre","lastName":"Pilipczuk","role":"Android Developer","profileImageURL":"http:\/\/developers.mub.lu\/resources\/profilePlaceholder.png"},{"id":"013","firstName":"Ray","lastName":"Britton","role":"Android Developer","profileImageURL":"http:\/\/developers.mub.lu\/resources\/profilePlaceholder.png"},{"id":"014","firstName":"Charly","lastName":"Murillo","role":"Android Developer","profileImageURL":"http:\/\/developers.mub.lu\/resources\/profilePlaceholder.png"}]},{"teamName":"Web","members":[{"id":"015","firstName":"Ryan","lastName":"French","role":"Web Team Lead","profileImageURL":"http:\/\/developers.mub.lu\/resources\/profilePlaceholder.png","teamLead":true},{"id":"016","firstName":"James","lastName":"Ward","role":"Web Developer","profileImageURL":"http:\/\/developers.mub.lu\/resources\/profilePlaceholder.png"},{"id":"018","firstName":"Adam","lastName":"Smith","role":"Web Developer","profileImageURL":"http:\/\/developers.mub.lu\/resources\/profilePlaceholder.png"},{"id":"019","firstName":"Leonard","lastName":"Da Costa","role":"Web Developer","profileImageURL":"http:\/\/developers.mub.lu\/resources\/profilePlaceholder.png"}]},{"teamName":"Design","members":[{"id":"020","firstName":"Hannah","lastName":"Tempest","role":"Design Team Lead","profileImageURL":"http:\/\/developers.mub.lu\/resources\/profilePlaceholder.png","teamLead":true},{"id":"021","firstName":"Ellis","lastName":"Reed","role":"Designer","profileImageURL":"http:\/\/developers.mub.lu\/resources\/profilePlaceholder.png"},{"id":"022","firstName":"Pete","lastName":"Horsham","role":"Designer","profileImageURL":"http:\/\/developers.mub.lu\/resources\/profilePlaceholder.png"},{"id":"023","firstName":"Hemel","lastName":"Dave","role":"Designer","profileImageURL":"http:\/\/developers.mub.lu\/resources\/profilePlaceholder.png"},{"id":"024","firstName":"Hannah","lastName":"Corke","role":"Designer","profileImageURL":"http:\/\/developers.mub.lu\/resources\/profilePlaceholder.png"}]}] 
        JSONObject jsonObject = response.getJSONObject(i); 

        for(int j=0;j<jsonObject.length();j++){ 
         JSONObject object = jsonObject.getJSONObject("teamName"); 
         Log.v("Theod",object.toString()); 




       } catch (JSONException e) { 
        e.printStackTrace(); 
       } 

Allerdings bekomme ich eine beschweren besagt, dass die „Teamname“ Objekt existiert nicht.

Irgendwelche Ideen dazu?

Danke.

Ich kann den TeamName für iOS :) lesen. Aber jetzt bin ich verwirrt mit dem Mitglieder-Array. Ich habe eine andere Schleife

@Override 
     public void onResponse(JSONArray response) { 
      Log.d("Theo", response.toString()); 

      for(int i = 0;i<response.length();i++){ 

       try { 
        //[{"id":"001","firstName":"Mark","lastName":"Mason","role":"CEO","profileImageURL":"http:\/\/developers.mub.lu\/resources\/profilePlaceholder.png"}, 
        // {"teamName":"iOS","members":[{"id":"002","firstName":"Olly","lastName":"Berry","role":"iOS Team Lead","profileImageURL":"http:\/\/developers.mub.lu\/resources\/profilePlaceholder.png","teamLead":true},{"id":"003","firstName":"James","lastName":"Frost","role":"iOS Developer","profileImageURL":"http:\/\/developers.mub.lu\/resources\/profilePlaceholder.png"},{"id":"004","firstName":"Liam","lastName":"Nichols","role":"iOS Developer","profileImageURL":"http:\/\/developers.mub.lu\/resources\/profilePlaceholder.png"},{"id":"005","firstName":"Chris","lastName":"Watson","role":"iOS Developer","profileImageURL":"http:\/\/developers.mub.lu\/resources\/profilePlaceholder.png"},{"id":"006","firstName":"Richard","lastName":"Turton","role":"iOS Developer","profileImageURL":"http:\/\/developers.mub.lu\/resources\/profilePlaceholder.png"},{"id":"007","firstName":"Matt","lastName":"Colliss","role":"iOS Developer","profileImageURL":"http:\/\/developers.mub.lu\/resources\/profilePlaceholder.png"},{"id":"008","firstName":"David","lastName":"Gibson","role":"iOS Developer","profileImageURL":"http:\/\/developers.mub.lu\/resources\/profilePlaceholder.png"},{"id":"009","firstName":"Tom","lastName":"Guy","role":"iOS Developer","profileImageURL":"http:\/\/developers.mub.lu\/resources\/profilePlaceholder.png"},{"id":"010","firstName":"Rich","lastName":"Hodgkins","role":"iOS Developer","profileImageURL":"http:\/\/developers.mub.lu\/resources\/profilePlaceholder.png"}]},{"teamName":"Android","members":[{"id":"011","firstName":"David","lastName":"Branton","role":"Android Team Lead","profileImageURL":"http:\/\/developers.mub.lu\/resources\/profilePlaceholder.png","teamLead":true},{"id":"012","firstName":"Dre","lastName":"Pilipczuk","role":"Android Developer","profileImageURL":"http:\/\/developers.mub.lu\/resources\/profilePlaceholder.png"},{"id":"013","firstName":"Ray","lastName":"Britton","role":"Android Developer","profileImageURL":"http:\/\/developers.mub.lu\/resources\/profilePlaceholder.png"},{"id":"014","firstName":"Charly","lastName":"Murillo","role":"Android Developer","profileImageURL":"http:\/\/developers.mub.lu\/resources\/profilePlaceholder.png"}]},{"teamName":"Web","members":[{"id":"015","firstName":"Ryan","lastName":"French","role":"Web Team Lead","profileImageURL":"http:\/\/developers.mub.lu\/resources\/profilePlaceholder.png","teamLead":true},{"id":"016","firstName":"James","lastName":"Ward","role":"Web Developer","profileImageURL":"http:\/\/developers.mub.lu\/resources\/profilePlaceholder.png"},{"id":"018","firstName":"Adam","lastName":"Smith","role":"Web Developer","profileImageURL":"http:\/\/developers.mub.lu\/resources\/profilePlaceholder.png"},{"id":"019","firstName":"Leonard","lastName":"Da Costa","role":"Web Developer","profileImageURL":"http:\/\/developers.mub.lu\/resources\/profilePlaceholder.png"}]},{"teamName":"Design","members":[{"id":"020","firstName":"Hannah","lastName":"Tempest","role":"Design Team Lead","profileImageURL":"http:\/\/developers.mub.lu\/resources\/profilePlaceholder.png","teamLead":true},{"id":"021","firstName":"Ellis","lastName":"Reed","role":"Designer","profileImageURL":"http:\/\/developers.mub.lu\/resources\/profilePlaceholder.png"},{"id":"022","firstName":"Pete","lastName":"Horsham","role":"Designer","profileImageURL":"http:\/\/developers.mub.lu\/resources\/profilePlaceholder.png"},{"id":"023","firstName":"Hemel","lastName":"Dave","role":"Designer","profileImageURL":"http:\/\/developers.mub.lu\/resources\/profilePlaceholder.png"},{"id":"024","firstName":"Hannah","lastName":"Corke","role":"Designer","profileImageURL":"http:\/\/developers.mub.lu\/resources\/profilePlaceholder.png"}]}] 
        JSONObject jsonObject = response.getJSONObject(1); 
        for(int j=0;j<jsonObject.length();j++){ 
         Model m = new Model(); 

         m.setRole(jsonObject.getString("teamName")); 


         JSONArray jsonArray = jsonObject.getJSONArray("members"); 


         modelArrayList.add(m); 
         for(int k = 0;k<jsonArray.length();k++){ 

          JSONObject teamMembers =    
      jsonArray.getJSONObject(i); 
      JSONObject teamMembers = jsonArray.getJSONObject(i); 

      m.setFirstName(teamMembers.getString("fistName")); 
          m.setSecondName(teamMembers.getString("lastName")); 

          modelArrayList.add(m); 
         } 
         Log.v("Theod",jsonArray.toString()); 
        } 

       } catch (JSONException e) { 
        e.printStackTrace(); 
       } 

      } 

      // Update list by notifying the adapter of changes 
      myAdapter.notifyDataSetChanged(); 
     } 
    }, new Response.ErrorListener() { 
     @Override 
     public void onErrorResponse(VolleyError error) { 

      //hidePD(); 
     } 
    }); 
    AppController.getInstance().addToRequestQueue(jsObjRequest); 

} 

aber keine Daten angezeigt werden :(

Answer 1

ich eine ähnliche Frage here beantwortet haben, die glaube ich kann Ihnen helfen.

public String parseJSON(String jsonString) { 
try { 
    JSONObject object = (JSONObject) new JSONTokener(jsonString).nextValue(); 
    return object.getJSONObject(1).getString("teamName"); 
} 
catch (JSONException e) { 
    return null; 
} 

}