Показать изображения из URL с помощью JSON-андроида

Question

AsyncTask из EventHome.java

class LoadProfile extends AsyncTask<String, String, String> { 
    @Override 
    protected void onPreExecute() { 
     super.onPreExecute(); 
     pDialog = new ProgressDialog(EventHome.this); 
     pDialog.setMessage("Loading..."); 
     pDialog.setIndeterminate(false); 
     pDialog.setCancelable(false); 
     pDialog.show(); 
    } 

    /** 
    * getting Profile JSON 
    * */ 
    protected String doInBackground(String... args) { 
     // Building Parameters 
     String json = null; 
     try { 
      List<NameValuePair> params = new ArrayList<NameValuePair>(); 

      HttpClient httpclient = new DefaultHttpClient(); 
      HttpPost httppost = new HttpPost(PROFILE_URL); 
      httppost.setEntity(new UrlEncodedFormEntity(params)); 

      // Execute HTTP Post Request 
      HttpResponse response = httpclient.execute(httppost); 
      HttpEntity resEntity = response.getEntity(); 
      json = EntityUtils.toString(resEntity); 

      Log.i("All Events: ", json.toString()); 
     } catch (Exception e) { 
      e.printStackTrace(); 
     } 

     return json; 
    } 

    @Override 
    protected void onPostExecute(String json) { 
     super.onPostExecute(json); 
     // dismiss the dialog after getting all products 
     pDialog.dismiss(); 
     try{ 
     event_all = new JSONObject(json); 
     JSONArray user = event_all.getJSONArray("events"); 
     JSONObject jb= user.getJSONObject(0); 
     String name = jb.getString("name"); 
     String venue=jb.getString("location"); 
     String date=jb.getString("date_d"); 
     String descr=jb.getString("descr"); 
     String image1=jb.getString("images1"); 

     // displaying all data in textview 

     tv3.setText(name); 
     tv4.setText(venue+", "+date); 
     tv5.setText(descr); 
     }catch(Exception e) 
     { 
      e.printStackTrace(); 
     } 

    } 

} 

строку вывода JSon

{"events":[{"id":"1","name":"Demo Event","descr":"This is a demo","date_d":"12\/27\/2014","time_t":"","images":"http:\/\/www.adagioinfotech.com\/event\/uploads\/event\/demo.png","images1":"http:\/\/www.adagioinfotech.com\/event\/uploads\/event\/demo1.png","location":"Ernakulam","publish":"1"},{"id":"2","name":"Flower Show","descr":"xfvslkdfvsw fvgersdgvel fgvmerlkgjer fgertgkjerltgf dfrgergt","date_d":"12\/29\/2014","time_t":"","images":"http:\/\/www.adagioinfotech.com\/event\/uploads\/event\/demo.png","images1":"http:\/\/www.adagioinfotech.com\/event\/uploads\/event\/demo1.png","location":"Thodupuzha","publish":"1"},{"id":"3","name":"Cultural Event","descr":"sfsdnfkjn sdfrelegkrg fdgvlkgvjmer fdgbelkrek dferlkgelrk dfgerge","date_d":"12\/30\/2014","time_t":"","images":"http:\/\/www.adagioinfotech.com\/event\/uploads\/event\/demo.png","images1":"http:\/\/www.adagioinfotech.com\/event\/uploads\/event\/demo1.png","location":"Idukki","publish":"1"}]} 

Я хочу, чтобы отобразить изображения из значений JSon. Как я могу это сделать.

Answer 1

Попробуйте загрузить изображение, используя picasso как эту

@Override 
protected void onPostExecute(String json) { 
    super.onPostExecute(json); 
    // dismiss the dialog after getting all products 
    pDialog.dismiss(); 
    try{ 
     event_all = new JSONObject(json); 
     JSONArray user = event_all.getJSONArray("events"); 
     JSONObject jb= user.getJSONObject(0); 
     String name = jb.getString("name"); 
     String venue=jb.getString("location"); 
     String date=jb.getString("date_d"); 
     String descr=jb.getString("descr"); 
     String image1=jb.getString("images1"); 

     // displaying all data in textview 

     tv3.setText(name); 
     tv4.setText(venue+", "+date); 
     tv5.setText(descr); 
     if(image1 != null && !image1.equalsIgnoreCase("")) 
       Picasso.with(EventHome.this).load(image1).into(iv7); 
    }catch(Exception e) 
    { 
     e.printStackTrace(); 
    } 

} 

Места Picasso банки в libs папки вашего проекта

Answer 2

Попробуйте

protected void onPostExecute(String json) { ..... 

ImageLoader imageLoader = ImageLoader.getInstance(); 
DisplayImageOptions options = new DisplayImageOptions.Builder().cacheInMemory(true) 
.cacheOnDisc(true).resetViewBeforeLoading(true) 
.showImageForEmptyUri(fallback) 
.showImageOnFail(fallback) 
.showImageOnLoading(fallback).build(); 

//initialize image view 
ImageView imageView = (ImageView) findViewById(R.id.imageView1) 

//download and display image from url 
imageLoader.displayImage(image1, imageView, options);