안드로이드 - ListView에

나는 여전히 안드로이드 개발에 아주 새로운 해요로로드 JSON은 이름, 설명 및 이미지와 ListView로 (아래)이 JSON을로드 관련 응용 프로그램/프로젝트를하고 있어요,하지만했다 에뮬레이터에서 비어 있습니다. 내가 뭘 잘못하고 있는지 말해주십시오. 어떤 도움이라도 대단히 감사하겠습니다! (I는 초보자 나처럼 더 나은 더 구체적으로 ..)안드로이드 - ListView에

JSON :

{ 
    "success":true, 
    "games":[ 
     { 
     "id":"1", 
     "name":"Name of the Game", 
     "description":"This is what it is about", 
     "image":"IMAGE URL" 
     } 
    ] 
}

AndroidJSONParsingActivity :

// URL to make request 
    private static final String url = "URL of API"; 

    // JSON Node names 
    private static final String TAG_GAMES = "games"; 
    private static final String TAG_ID = "id"; 
    private static final String TAG_NAME = "name"; 
    private static final String TAG_DESCRIPTION = "description"; 
    private static final String TAG_IMAGE = "image"; 

    // games JSONArray 
    JSONArray games = null; 

    @Override 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.main); 

    // Hash map for ListView 
       ArrayList<HashMap<String, String>> gameList = new ArrayList<HashMap<String, String>>(); 

      // Creating JSON Parser instance 
      JSONParser jParser = new JSONParser(); 

      // getting JSON string from URL 
      JSONObject json = jParser.getJSONFromUrl(url); 

      try { 
       // Getting Array of Games 
       games = json.getJSONArray(TAG_GAMES); 

       // looping through All Games 
       for(int i = 0; i < games.length(); i++){ 
        JSONObject c = games.getJSONObject(i); 

        // Storing each JSON item in variable 
        String id = c.getString(TAG_ID); 
        String image = c.getString(TAG_IMAGE); 

        // is again JSON Object 
        JSONObject author = c.getJSONObject(TAG_DESCRIPTION); 
        String name = author.getString(TAG_NAME); 

        // creating new HashMap 
        HashMap<String, String> map = new HashMap<String, String>(); 

        // adding each child node to HashMap key => value 
        map.put(TAG_ID, id); 
        map.put(TAG_NAME, name); 
        map.put(TAG_IMAGE, image); 
        // adding HashList to ArrayList 
        gameList.add(map); 
       } 
      } catch (JSONException e) { 
       e.printStackTrace(); 
      } 


      /** 
      * Updating parsed JSON data into ListView 
      * */ 
      ListAdapter adapter = new SimpleAdapter(this, gameList, 
        R.layout.list_item, 
        new String[] { TAG_NAME, TAG_DESCRIPTION }, new int[] { 
          R.id.name, R.id.description }); 

      setListAdapter(adapter); 

      // selecting single ListView item 
      ListView lv = getListView(); 

      // Launching new screen on Selecting Single ListItem 
      lv.setOnItemClickListener(new OnItemClickListener() { 

       public void onItemClick(AdapterView<?> parent, View view, 
         int position, long id) { 
        // getting values from selected ListItem 
        String name = ((TextView) view.findViewById(R.id.name)).getText().toString(); 
        String description = ((TextView) view.findViewById(R.id.description)).getText().toString(); 

        // Starting new intent 
        Intent in = new Intent(getApplicationContext(), SingleMenuItemActivity.class); 
        in.putExtra(TAG_NAME, name); 
        in.putExtra(TAG_DESCRIPTION, description); 
        startActivity(in); 

       } 
      }); 



     }

JSON 파서 :

public class JSONParser { 

    static InputStream is = null; 
    static JSONObject jObj = null; 
    static String json = ""; 

    // constructor 
    public JSONParser() { 

    } 

    public JSONObject getJSONFromUrl(String url) { 

     // Making HTTP request 
     try { 
      // defaultHttpClient 
      DefaultHttpClient httpClient = new DefaultHttpClient(); 
      HttpPost httpPost = new HttpPost(url); 

      HttpResponse httpResponse = httpClient.execute(httpPost); 
      HttpEntity httpEntity = httpResponse.getEntity(); 
      is = httpEntity.getContent(); 

     } catch (UnsupportedEncodingException e) { 
      e.printStackTrace(); 
     } catch (ClientProtocolException e) { 
      e.printStackTrace(); 
     } catch (IOException e) { 
      e.printStackTrace(); 
     } 

     try { 
      BufferedReader reader = new BufferedReader(new InputStreamReader(
        is, "iso-8859-1"), 8); 
      StringBuilder sb = new StringBuilder(); 
      String line = null; 
      while ((line = reader.readLine()) != null) { 
       sb.append(line + "\n"); 
      } 
      is.close(); 
      json = sb.toString(); 
     } catch (Exception e) { 
      Log.e("Buffer Error", "Error converting result " + e.toString()); 
     } 

     // try parse the string to a JSON object 
     try { 
      jObj = new JSONObject(json); 
     } catch (JSONException e) { 
      Log.e("JSON Parser", "Error parsing data " + e.toString()); 
     } 

     // return JSON String 
     return jObj; 

    } 
}

,451,515,

main.xml에 :

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    android:layout_width="fill_parent" 
    android:layout_height="fill_parent" 
    android:orientation="vertical"> 
    <!-- Main ListView 
     Always give id value as list(@android:id/list) 
    --> 
    <ListView 
     android:id="@android:id/list" 
     android:layout_width="fill_parent" 
     android:layout_height="wrap_content"/> 

</LinearLayout>

list_item.xml :

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout 
    xmlns:android="http://schemas.android.com/apk/res/android" 
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content" 
    android:orientation="vertical"> 
    <!-- Name Label --> 
    <TextView 
     android:id="@+id/name" 
     android:layout_width="fill_parent" 
     android:layout_height="wrap_content" 
     android:textColor="#43bd00" 
     android:textSize="16sp" 
     android:textStyle="bold" 
     android:paddingTop="6dip" 
     android:paddingBottom="2dip" /> 
     <TextView 
      android:id="@+id/description" 
      android:layout_width="fill_parent" 
      android:layout_height="wrap_content" 
      android:textColor="#acacac" 
      android:paddingBottom="2dip" /> 
     </LinearLayout>

추가 로그 캣 정보 :

01-03 06:16:15.254: E/ActivityThread(616): Service com.android.exchange.ExchangeService has leaked ServiceConnection [email protected]47b40 that was originally bound here 
01-03 06:16:15.254: E/ActivityThread(616): android.app.ServiceConnectionLeaked: Service com.android.exchange.ExchangeService has leaked ServiceConnection [email protected]47b40 that was originally bound here 
01-03 06:16:15.254: E/ActivityThread(616): at android.app.LoadedApk$ServiceDispatcher.<init>(LoadedApk.java:969) 
01-03 06:16:15.254: E/ActivityThread(616): at android.app.LoadedApk.getServiceDispatcher(LoadedApk.java:863) 
01-03 06:16:15.254: E/ActivityThread(616): at android.app.ContextImpl.bindService(ContextImpl.java:1418) 
01-03 06:16:15.254: E/ActivityThread(616): at android.app.ContextImpl.bindService(ContextImpl.java:1407) 
01-03 06:16:15.254: E/ActivityThread(616): at android.content.ContextWrapper.bindService(ContextWrapper.java:473) 
01-03 06:16:15.254: E/ActivityThread(616): at com.android.emailcommon.service.ServiceProxy.setTask(ServiceProxy.java:157) 
01-03 06:16:15.254: E/ActivityThread(616): at com.android.emailcommon.service.ServiceProxy.setTask(ServiceProxy.java:145) 
01-03 06:16:15.254: E/ActivityThread(616): at com.android.emailcommon.service.ServiceProxy.test(ServiceProxy.java:191) 
01-03 06:16:15.254: E/ActivityThread(616): at com.android.exchange.ExchangeService$7.run(ExchangeService.java:1850) 
01-03 06:16:15.254: E/ActivityThread(616): at com.android.emailcommon.utility.Utility$2.doInBackground(Utility.java:551) 
01-03 06:16:15.254: E/ActivityThread(616): at com.android.emailcommon.utility.Utility$2.doInBackground(Utility.java:549) 
01-03 06:16:15.254: E/ActivityThread(616): at android.os.AsyncTask$2.call(AsyncTask.java:287) 
01-03 06:16:15.254: E/ActivityThread(616): at java.util.concurrent.FutureTask.run(FutureTask.java:234) 
01-03 06:16:15.254: E/ActivityThread(616): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080) 
01-03 06:16:15.254: E/ActivityThread(616): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573) 
01-03 06:16:15.254: E/ActivityThread(616): at java.lang.Thread.run(Thread.java:856) 
01-03 06:16:15.365: E/StrictMode(616): null 
01-03 06:16:15.365: E/StrictMode(616): android.app.ServiceConnectionLeaked: Service com.android.exchange.ExchangeService has leaked ServiceConnection [email protected]47b40 that was originally bound here 
01-03 06:16:15.365: E/StrictMode(616): at android.app.LoadedApk$ServiceDispatcher.<init>(LoadedApk.java:969) 
01-03 06:16:15.365: E/StrictMode(616): at android.app.LoadedApk.getServiceDispatcher(LoadedApk.java:863) 
01-03 06:16:15.365: E/StrictMode(616): at android.app.ContextImpl.bindService(ContextImpl.java:1418) 
01-03 06:16:15.365: E/StrictMode(616): at android.app.ContextImpl.bindService(ContextImpl.java:1407) 
01-03 06:16:15.365: E/StrictMode(616): at android.content.ContextWrapper.bindService(ContextWrapper.java:473) 
01-03 06:16:15.365: E/StrictMode(616): at com.android.emailcommon.service.ServiceProxy.setTask(ServiceProxy.java:157) 
01-03 06:16:15.365: E/StrictMode(616): at com.android.emailcommon.service.ServiceProxy.setTask(ServiceProxy.java:145) 
01-03 06:16:15.365: E/StrictMode(616): at com.android.emailcommon.service.ServiceProxy.test(ServiceProxy.java:191) 
01-03 06:16:15.365: E/StrictMode(616): at com.android.exchange.ExchangeService$7.run(ExchangeService.java:1850) 
01-03 06:16:15.365: E/StrictMode(616): at com.android.emailcommon.utility.Utility$2.doInBackground(Utility.java:551) 
01-03 06:16:15.365: E/StrictMode(616): at com.android.emailcommon.utility.Utility$2.doInBackground(Utility.java:549) 
01-03 06:16:15.365: E/StrictMode(616): at android.os.AsyncTask$2.call(AsyncTask.java:287)

출처

2013-01-07 Anonymous

모든 것은 확인되지만 장난감 포스트가 편집되기 전에, 쉼표가 JSON 조각에서 누락 된 JSON 응답 –

을 얻기를 위해) AsyncTask를을 (사용해야합니다. 복사/붙여 넣기 오류입니까? 그렇지 않은 경우 JSON의 형식이 올바르지 않습니다. – tiffon

안녕하세요 tiffon, JSON이 올바르게 형식화되어 있습니다. 내 복사/붙여 넣기 오류입니다. –

AsyncTask.class

class LoadMovies extends AsyncTask<Void, Void, List<Category>>{ 

private YourActivity activity; 

public LoadMovies(YourActivity activty){ 
    activity = activty; 
} 

     private final static String TAG = "Log"; 


     @Override 
     protected List<Category> doInBackground(Void... params) { 
      InputStream ips = null; 
      JSONObject json = null; 

      try{ 
       DefaultHttpClient client = new DefaultHttpClient(); 
       HttpResponse response = client.execute(new HttpGet("http://youtsite")); 

       ips = response.getEntity().getContent(); 
       BufferedReader buffer = new BufferedReader(new InputStreamReader(ips)); 
       StringBuilder builder = new StringBuilder(); 
       String line; 

       while((line = buffer.readLine()) != null){ 
        builder.append(line+"\n"); 
       } 
       json = new JSONObject(builder.toString()); 

      } 
      catch(Exception e){ 
       Log.i(TAG, e.toString()); 
      } 

       List<Category> list = new ArrayList<Category>(); 
       JSONArray array = json.optJSONObject("data").optJSONArray("reviews"); 
       for (int i = 0; i < array.length(); i++){ 
        JSONObject rss = array.optJSONObject(i); 
            Category cat = new Category(); 
            cat.addName(rss.optString("name")); 
            cat.addCode(rss.optString("code"));      
        list.add(cat); 
       } 

      return list; 
     } 

     protected void onPostExecute(List<Category> result){ 
      super.onPostExecute(result); 
        Youractivity.mMoviesAdapter.addCategory(result); 
     } 

    }

Category.class

public class Category { 
    private String name; 
    private String code; 

    void addName(String name){ 
     this.name = name; 
    } 

    void addCode(String code){ 
     this.code = code; 
    } 

    public String getName(){ 
    return this.name; 
    } 

    String getCode(){ 
     return this.code; 
    } 
}

Adapter.class

class MoviesAdapter extends ArrayAdapter<Category> { 

    Context c;  
    List<Category> mListCategory; 

    public MoviesAdapter(Context context, int resource, int textViewResource, List<Categoryy> list) { 
     super(context, resource, textViewResource, list); 
     c = context; 

     mListCategory= list; 
    } 

    public void addCategory(List<MoviesCategory> list){ 
     mListCategory.addAll(list); 
     notifyDataSetChanged(); 
    } 

    @Override 
    public View getView(int position, View convertView, ViewGroup parent){ 
     View v = convertView; 
     if(v == null){ 
      LayoutInflater inflater = LayoutInflater.from(c); 
      v = inflater.inflate(R.layout.yourview, null); 
     } 

     TextView title = (TextView) v.findViewById(R.id.title); 
     TextView code= (TextView) v.findViewById(R.id.code); 

     Category cat = getItem(position); 
     if(mov != null){ 
      title.setText(cat.getName()); 
      code.setText(cat.getCode()); 

     } 

     return v; 
    } 

}

그리고 MainActivity 통화에서

모든

public class YourActivity extends MainActivity{ private ListView mCategory; private List<Category> mCategoryArray = new ArrayList<Category>(); private LoadMovies mLoadMovies; public mMoviesAdapter adapter; @Override protected void onCreate(Bundle bundle){ super.onCreate(bundle); //MoviesList mMoviesAdapter = new MoviesAdapter(this, R.layout.main_movies_adapter, R.id.youradapterlayout, mCategoryArray); mCategoryList = (ListView) findViewById(R.id.movies_adapter_list); mMoviesList.setAdapter(mMoviesAdapter); mLoadMovies = new LoadMovies(this); mLoadMovies.execute(); } }

출처

2013-01-07 07:05:40

고맙습니다, 오크. 귀찮게해서 미안하지만 내 코드와 통합 할 때 몇 가지 문제가 있습니다. 조언이 있습니까? (예 : 어떤 유형의 어댑터를 사용할 지, 변수를 어디에 넣을 지) –

잠깐 기다려주세요!) –

이 내 코드입니다

public class as extends AsyncTask { 

      public as(int aa)  { 
         } 

      @Override  protected Object doInBackground(Object... params)  {   //int price1,sp1,save1;    try    {   JSONObject json = JSONfunctions.getJSONfromURL("http://192.168.1.97/inventory/Client.php?action=productlist&page_no="+aa+"&user_id="+userid+"");   Log.e("url", String.valueOf("http://192.168.1.97/inventory/Client.php?action=productlist&page_no="+aa+"&user_id="+userid+""));   mylist = new ArrayList<HashMap<String, String>>(); 
       try{ 
        JSONArray products = json.getJSONArray("product"); 
        Log.v("inside", "inside"); 

        Log.e("pages",String.valueOf(json.get("products_count"))); 
        pagecount=json.getInt("page_count"); 

        //JSONObject e1 = pages.getJSONObject("tot_pages"); 

       // Log.e("totpages",e1.getString("tot_pages")); 
       // pagecount=json.getInt("tot_pages"); 
        // pcount=json.getInt("p_count"); 


        for(int i=0;i<products.length();i++){ 
         String img,img1; 
         HashMap<String, String> map = new HashMap<String, String>();  
         Log.e("p c",String.valueOf(i)); 
         JSONObject e = products.getJSONObject(i); 
         Log.v("name", String.valueOf(e.getString("name"))); 
         map.put("name",e.getString("name")); 
         map.put("price",e.getString("price")); 
         map.put("sp",e.getString("special_price")); 
         map.put("image", String.valueOf(e.getString("image"))); 
        float price1 = Float.parseFloat(e.getString("price")); 
        float sp1=Float.parseFloat(e.getString("special_price")); 
        float save1=price1-sp1; 
        map.put("save",String.valueOf(save1)); 


         mylist.add(map);  

        }  
       }catch(JSONException e) 
       { 
        Log.e("log_tag", "Error parsing data "+e.toString()); 

       } 



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





      } 
          return null; 




         } 

      @Override  protected void onPostExecute(Object result)   {   //lv.setAdapter(new ItemListBaseAdapter(AllItems.this, mylist)); 
         } 




      @Override  protected void onPreExecute()  {   try{   progressDialog = ProgressDialog.show(AllItems.this, "", "Please wait");    }   catch (Exception e) { 


        e.printStackTrace(); 

           }   super.onPreExecute();  } 

     }  //previous check method 


       public class ItemListBaseAdapter extends BaseAdapter { 

        private ArrayList<HashMap<String, String>> itemDetailsrrayList;   Bitmap bitmap[];   Context context1;   String ab; 



         private LayoutInflater l_Inflater; 

      public ItemListBaseAdapter(Context context, ArrayList<HashMap<String, String>> mylist)  { 
          itemDetailsrrayList = mylist;   //l_Inflater = LayoutInflater.from(context);   context1=context; 
       } 

      public int getCount() {    return itemDetailsrrayList.size(); 
         } 

      public Object getItem(int position) {   return itemDetailsrrayList.get(position);  } 

      public long getItemId(int position) { 
          return position;  } 



        public View getView(final int position, View convertView, ViewGroup parent)  { 
       int ruban=3; 
         //final ViewHolder holder; 

         if (convertView == null) { 
        l_Inflater = LayoutInflater.from(context1); 

        convertView = l_Inflater.inflate(R.layout.list1, null,true); 



           } 

          TextView txt_itemName = (TextView) convertView.findViewById(R.id.textView1);   TextView txt_itemDescription = (TextView) convertView.findViewById(R.id.mrp1);   TextView txt_itemPrice = (TextView) convertView.findViewById(R.id.ourprice1);   TextView txt_itemSave = (TextView) convertView.findViewById(R.id.save1);   //holder.txt_itemw = (TextView) convertView.findViewById(R.id.textView4);   WebView itemimmm=(WebView)convertView.findViewById(R.id.imageView1);   TextView t1 = (TextView) convertView.findViewById(R.id.t1);    TextView t2 = (TextView) convertView.findViewById(R.id.t2);    TextView t3 = (TextView) convertView.findViewById(R.id.t3);    ImageView addprod=(ImageView)convertView.findViewById(R.id.addprod);   final Button decprod=(Button)convertView.findViewById(R.id.decprod); 
       final TextView disprod=(TextView)convertView.findViewById(R.id.disprod);   decprod.setVisibility(View.INVISIBLE);   disprod.setVisibility(View.INVISIBLE); 
          txt_itemDescription.setPaintFlags(txt_itemDescription.getPaintFlags() | Paint.STRIKE_THRU_TEXT_FLAG);   itemimmm.getSettings().setLayoutAlgorithm(LayoutAlgorithm.SINGLE_COLUMN); 
          txt_itemName.setTypeface(AllItems.face);   txt_itemDescription.setTypeface(AllItems.face);    txt_itemPrice.setTypeface(AllItems.face);   txt_itemSave.setTypeface(AllItems.face);   //holder.txt_itemw.setTypeface(AllItems.face);   t1.setTypeface(AllItems.rupee); 
       t2.setTypeface(AllItems.rupee); 
       t3.setTypeface(AllItems.rupee); 
       //StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build(); 
       //StrictMode.setThreadPolicy(policy);   txt_itemName.setText(itemDetailsrrayList.get(position).get("name"));   txt_itemDescription.setText(itemDetailsrrayList.get(position).get("price"));   txt_itemPrice.setText(itemDetailsrrayList.get(position).get("sp")); 
       txt_itemSave.setText(itemDetailsrrayList.get(position).get("save"));   //holder.txt_itemw.setText(itemDetailsrrayList.get(position).get("type")); 
       itemimmm.loadUrl(itemDetailsrrayList.get(position).get("image"));   if(itemDetailsrrayList.get(position).get("name").equals("Daughter")||itemDetailsrrayList.get(position).get("name").equals("Ethnic"))   { 
       Log.e("name", String.valueOf(itemDetailsrrayList.get(position).get("name")));   //decprod.setVisibility(View.VISIBLE);   //disprod.setVisibility(View.VISIBLE);   } 

        // Log.e("before", "try"); 

         /* try{ 

         Log.e("try", String.valueOf(itemDetailsrrayList.get(position).get("image"))); 
        Bitmap bitmap1 = BitmapFactory.decodeStream((InputStream) new URL(itemDetailsrrayList.get(position).get("image")).getContent()); 
        itemimmm.setImageBitmap(bitmap1); 
        }catch(Exception ex){ 

         ex.printStackTrace(); 
         Log.e("error",String.valueOf(ex)); 
        itemimmm.setImageResource(getResources().getIdentifier("ic_launcher", "drawable", getPackageName())); 

         Log.e("catch", "catch");*/ 

       //prodImage.setImageResource(getResources().getIdentifier("sample", "drawable", getPackageName())); 


       //itemimmm.setImageResource(getResources().getIdentifier("ic_launcher", "drawable", getPackageName())); 



        //holder.itemImage.setImageBitmap(bitmap[position]); 

           addprod.setOnClickListener(new OnClickListener() { 
           @Override 
        public void onClick(View arg0)   { 


         //decprod.setVisibility(View.VISIBLE); 
         //disprod.setVisibility(View.VISIBLE); 



             /* int k = 0; 
             if(disprod.getText()!="" || disprod.getText()!=null){ 
              k = Integer.parseInt(String.valueOf(disprod.getText())); 
             } 
             disprod.setText(String.valueOf(++k)); 
             disprod.setTag(k);*/ 
             Log.v("position", String.valueOf(position)); 


           new AddCart(decprod,disprod).execute(); 




        }   }); 




       decprod.setOnClickListener(new OnClickListener() { 

        @Override 
        public void onClick(View arg0) 
        { 
         //Log.v("item name", String.valueOf(itemDetailsrrayList.get(position).get("price"))); 

        }   }); 




       /* textView.setText(getelement()[position]); 

       ImageView imageView = (ImageView) convertView 
       .findViewById(R.id.icon); 
       imageView.setImageBitmap(bitmap);*/ 




        return convertView; 




        }

출처

2013-01-07 08:53:32 Ruban

코드에 감사드립니다. 비동기를 내 방식으로 통합하는 가장 좋은 방법은 무엇이라고 생각하십니까? (미안해해서 미안해, 네 도움에 정말 감사한다!) –

안드로이드 - ListView에

답변

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