獲得圖像的ListView

我正在使用圖像+文字的自定義列表視圖，這裏是我的代碼：獲得圖像的ListView

listDoctor.java

public void cek(){ 

      String url_select = "http://10.0.2.2/BloodGlucose/selectDoctor.php"; 

      HttpClient httpClient = new DefaultHttpClient(); 
      HttpPost httpPost = new HttpPost(url_select); 

      //parameter 
      ArrayList<NameValuePair> param = new ArrayList<NameValuePair>(); 

      try { 
       //add parameter 
       httpPost.setEntity(new UrlEncodedFormEntity(param)); 

      HttpResponse httpRespose = httpClient.execute(httpPost); 
      HttpEntity httpEntity = httpRespose.getEntity(); 

      //read content 
      InputStream in = httpEntity.getContent(); 
      BufferedReader read = new BufferedReader(new InputStreamReader(in)); 

      String content = ""; 
      String line = ""; 

      while((line = read.readLine())!=null){ 
       content += line; 
      } 

      Log.d("ADBUG", "content: "+content); 


      //json 
      if(!content.equals("null")){ 




       try { 
        JSONArray jArr = new JSONArray(content); 
        for(int i=0;i<jArr.length();i++){ 
         JSONObject jObj = jArr.getJSONObject(i); 
         String id = jObj.getString("_id"); 
         String name = jObj.getString("name"); 
         String dateofbirth = jObj.getString("dateofbirth"); 
         String phone = jObj.getString("telp"); 
         String address = jObj.getString("clinicaddress"); 
         String file = jObj.getString("file"); 
         String uname = jObj.getString("username_doctor"); 
         String lulusan = jObj.getString("lulusan"); 
         String clinicname = jObj.getString("clinicname"); 

         names.add(name); 
         date.add(dateofbirth); 
         telp.add(phone);  
         clinic.add(address); 
         usernamedoctor.add(uname); 
         namaklinik.add(clinicname); 
         graduate.add(lulusan); 



        } 

        setListAdapter(new DoctorArrayAdapter(this, names)); 


       } catch (JSONException e) { 
        // TODO Auto-generated catch block 
        e.printStackTrace(); 
       } 

      }else{ 
       Toast.makeText(this, "Error", Toast.LENGTH_LONG).show(); 
      } 

      } catch (ClientProtocolException e) { 
      // TODO Auto-generated catch block 
      e.printStackTrace(); 
      } catch (IOException e) { 
      // TODO Auto-generated catch block 
      e.printStackTrace(); 
      } 
     }

DoctorArrayAddapter.java

package research.android.bloodglucose; 


import java.io.BufferedInputStream; 
import java.io.BufferedReader; 
import java.io.IOException; 
import java.io.InputStream; 
import java.io.InputStreamReader; 
import java.net.MalformedURLException; 
import java.net.URL; 
import java.net.URLConnection; 
import java.util.ArrayList; 

import org.apache.http.HttpEntity; 
import org.apache.http.HttpResponse; 
import org.apache.http.NameValuePair; 
import org.apache.http.client.ClientProtocolException; 
import org.apache.http.client.HttpClient; 
import org.apache.http.client.entity.UrlEncodedFormEntity; 
import org.apache.http.client.methods.HttpPost; 
import org.apache.http.impl.client.DefaultHttpClient; 
import org.json.JSONArray; 
import org.json.JSONException; 
import org.json.JSONObject; 

import research.android.bloodglucose.R; 

import android.content.Context; 
import android.graphics.Bitmap; 
import android.graphics.BitmapFactory; 
import android.graphics.drawable.Drawable; 
import android.util.Log; 
import android.view.LayoutInflater; 
import android.view.View; 
import android.view.ViewGroup; 
import android.widget.ArrayAdapter; 
import android.widget.ImageView; 
import android.widget.TextView; 
import android.widget.Toast; 

public class DoctorArrayAdapter extends ArrayAdapter<String> { 
    private final Context context; 
    private final ArrayList<String> values; 
    private ImageView imageView; 

    public DoctorArrayAdapter(Context context, ArrayList<String> names) { 
     super(context, R.layout.list_row, names); 
     this.context = context; 
     this.values = names; 
    } 

    @Override 
    public View getView(int position, View convertView, ViewGroup parent) { 
     LayoutInflater inflater = (LayoutInflater) context 
      .getSystemService(Context.LAYOUT_INFLATER_SERVICE); 

     View rowView = inflater.inflate(R.layout.list_row, parent, false); 
     TextView textView = (TextView) rowView.findViewById(R.id.DoctorName); 
     ImageView imageView = (ImageView) rowView.findViewById(R.id.list_image); 
     textView.setText(values.get(position)); 

     // Change icon based on name 
     String s = values.get(position); 

     System.out.println(s); 

     /*if (s.equals("WindowsMobile")) { 
      imageView.setImageResource(R.drawable.windowsmobile_logo); 
     } else if (s.equals("iOS")) { 
      imageView.setImageResource(R.drawable.ios_logo); 
     } else if (s.equals("Blackberry")) { 
      imageView.setImageResource(R.drawable.blackberry_logo); 
     } else { 
      imageView.setImageResource(R.drawable.android_logo); 
     }*/ 
cek(); 
     return rowView; 
    } 

    public void cek(){ 

      String url_select = "http://10.0.2.2/BloodGlucose/selectDoctor.php"; 

      HttpClient httpClient = new DefaultHttpClient(); 
      HttpPost httpPost = new HttpPost(url_select); 

      //parameter 
      ArrayList<NameValuePair> param = new ArrayList<NameValuePair>(); 

      try { 
       //add parameter 
       httpPost.setEntity(new UrlEncodedFormEntity(param)); 

      HttpResponse httpRespose = httpClient.execute(httpPost); 
      HttpEntity httpEntity = httpRespose.getEntity(); 

      //read content 
      InputStream in = httpEntity.getContent(); 
      BufferedReader read = new BufferedReader(new InputStreamReader(in)); 

      String content = ""; 
      String line = ""; 

      while((line = read.readLine())!=null){ 
       content += line; 
      } 

      Log.d("ADBUG", "content: "+content); 


      //json 
      if(!content.equals("null")){ 




       try { 
        JSONArray jArr = new JSONArray(content); 
        for(int i=0;i<jArr.length();i++){ 
         JSONObject jObj = jArr.getJSONObject(i); 
         String id = jObj.getString("_id"); 
         String name = jObj.getString("name"); 
         String dateofbirth = jObj.getString("dateofbirth"); 
         String phone = jObj.getString("telp"); 
         String address = jObj.getString("clinicaddress"); 
         String file = jObj.getString("file"); 
         String uname = jObj.getString("username_doctor"); 
         String lulusan = jObj.getString("lulusan"); 
         String clinicname = jObj.getString("clinicname"); 


         String ed = "http://10.0.2.2/BloodGlucose/img/"+uname+".jpg"; 
         URL aURL = new URL(ed); 
         final URLConnection conn = aURL.openConnection(); 
         conn.connect(); 
         final BufferedInputStream bis = new BufferedInputStream( 
           conn.getInputStream()); 
         final Bitmap bm = BitmapFactory.decodeStream(bis); 
         bis.close(); 


         imageView.setImageBitmap(bm); 


        } 



       } catch (JSONException e) { 
        // TODO Auto-generated catch block 
        e.printStackTrace(); 
       } 

      }else{ 

      } 

      } catch (ClientProtocolException e) { 
      // TODO Auto-generated catch block 
      e.printStackTrace(); 
      } catch (IOException e) { 
      // TODO Auto-generated catch block 
      e.printStackTrace(); 
      } 
     } 

    private Drawable ImageOperations(Context ctx, String url, String saveFilename) { 
      try { 
      URL imageUrl = new URL(url); 
      InputStream is = (InputStream) imageUrl.getContent(); 
      Drawable d = Drawable.createFromStream(is, "src"); 
      return d; 
      } catch (MalformedURLException e) { 
      e.printStackTrace(); 
      return null; 
      } catch (IOException e) { 
      e.printStackTrace(); 
      return null; 
      } 
     } 




}

問題是，當我運行模擬器，圖像沒有顯示，它只顯示文本，任何人都可以幫助我？謝謝

來源

2012-09-10 Handy Lukito

你可能不希望這樣做'content.equals（「空」）' – njzk2

你是一個網絡在UI線程上連接。別。 – njzk2

，並且您在每個getView調用中調用cek（）。這似乎很多，因爲它似乎沒有做任何事情後，第一個 – njzk2

嘗試這種類型，我不使用JSON，而是通過URL

 ImageView image = (ImageView) row.findViewById(R.id.ThumbImageView); 
       if (image != null) { 
        Bitmap bitimage = null; 
        BitmapFactory.Options options = new BitmapFactory.Options(); 
        options.inSampleSize = 1; 
        try { 
         //bitimage = BitmapFactory.decodeStream((InputStream) new URL(data.getThumbnail().toString().trim().toString()).getContent(), null, options); 
         bitimage = BitmapFactory.decodeStream((InputStream) new URL(ed).getContent(), null, options); 
         image.setImageBitmap(bitimage); 
        } catch (MalformedURLException e) { 
         e.printStackTrace(); 
        } catch (IOException e) { 
         e.printStackTrace(); 
        } 

       }

來源

2012-09-10 09:52:05 mukesh

謝謝你的回答：D –

獲得圖像的ListView

回答

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