添加ImageView与AQUERY到ListView

Question

我有一个工作与文本列表视图，现在想要添加图像与AQuery。

我已经更改了XML并添加了ImageView元素，现在想要通过AQuery添加图片加载 直到现在，我还为TextViews使用了一个SpecialAdapter，但我正在努力获取图像

到目前为止我的代码，我觉得我必须做些什么与适配器现在想

aq.id(R.id.imageView).image(c.getString("URL"), false, false); 

，但究竟是什么？

package com.schatten.p5_4; 

import android.app.Activity; 
import android.app.ProgressDialog; 
import android.content.Context; 
import android.content.Intent; 
import android.os.AsyncTask; 
import android.os.Bundle; 
import android.view.View; 
import android.widget.AdapterView; 
import android.widget.ImageView; 
import android.widget.ListView; 
import android.widget.TextView; 
import android.widget.Toast; 

import com.androidquery.AQuery; 

import org.json.JSONArray; 
import org.json.JSONException; 
import org.json.JSONObject; 

import java.util.ArrayList; 
import java.util.HashMap; 

public class GetArticleList extends Activity { 
public final static String EXTRA_MESSAGE = ".MESSAGE"; 
    //JSON Node Names 
    private static final String TABLE = "Table"; 
    private static final String A_ID = "AID"; 
    private static final String A_TEXT = "ArtikelText"; 
    private static final String A_GROUP = "Fuel"; 
    private static final String A_PRICE = "Preis_qm"; 
    private static final String A_IMG_URL = "URL"; 
    private static String url = ""; 
    ListView lv; 
    TextView aid; 
    TextView articletext; 
    TextView preis_qm; 
    ImageView article_img; 
    ArrayList<HashMap<String, String>> oslist = new ArrayList<HashMap<String, String>>(); 
    JSONArray android = null; 
    private Context context; 
    private AQuery aq; 

@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.article_list); 
    oslist = new ArrayList<HashMap<String, String>>(); 

    Intent intent = getIntent(); 
    url = GlobalDataPool.urlArticleList + intent.getStringExtra(GetArticle.EXTRA_MESSAGE); 

    new JSONParse().execute(); 
} 

private class JSONParse extends AsyncTask<String, String, JSONObject> { 
    private ProgressDialog pDialog; 

    @Override 
    protected void onPreExecute() { 
     super.onPreExecute(); 
     aid = (TextView) findViewById(R.id.tv_aid); 
     preis_qm = (TextView) findViewById(R.id.tv_preis_qm); 
     articletext = (TextView) findViewById(R.id.tv_articletext); 
     article_img = (ImageView) findViewById((R.id.list_image); 
     pDialog = new ProgressDialog(GetArticleList.this); 
     pDialog.setMessage("Getting Data ..."); 
     pDialog.setIndeterminate(false); 
     pDialog.setCancelable(true); 
     pDialog.show(); 
    } 

    @Override 
    protected JSONObject doInBackground(String... args) { 
     JSONParser2 jParser = new JSONParser2(); 
     // Getting JSON from URL 
     JSONObject json = jParser.getJSONFromUrl(url); 
     return json; 
    } 

    @Override 
    protected void onPostExecute(JSONObject json) { 
     pDialog.dismiss(); 
     try { 
      // Getting JSON Array from URL 
      android = json.getJSONArray(TABLE); 
      for (int i = 0; i < android.length(); i++) { 

       JSONObject c = android.getJSONObject(i); 
       // Storing JSON item in a Variable 
       String AID = c.getString(A_ID); 
       String ATEXT = c.getString(A_TEXT); 
       String APRICE = c.getString(A_PRICE); 
       String AIMGURL = GlobalDataPool.imageURL + c.getString("URL"); 
       // Adding value HashMap key => value 
       HashMap<String, String> map = new HashMap<String, String>(); 
       map.put(A_ID, AID); 
       map.put(A_TEXT, ATEXT); 
       map.put(A_PRICE, APRICE); 
       map.put(A_IMG_URL, AIMGURL); 
       oslist.add(map); 
       lv = (ListView) findViewById(R.id.list); 
       SpecialAdapter adapter = new SpecialAdapter(GetArticleList.this, oslist, 
         R.layout.article_list_v, 
         new String[]{A_ID, A_TEXT, A_PRICE, A_IMG_URL}, new int[]{ 
         R.id.tv_aid, R.id.tv_articletext, R.id.tv_preis_qm, R.id.iv_url}); 


       lv.setAdapter(adapter); 


       lv.setOnItemClickListener(new AdapterView.OnItemClickListener() { 
               @Override 
               public void onItemClick(AdapterView<?> parent, View view, 
                     int position, long id) { 
                //Toast.makeText(GetArticleList.this, "You Clicked at " + oslist.get(+position).get("name"), Toast.LENGTH_SHORT).show(); 

                Intent intent = new Intent(GetArticleList.this, GetArticle.class); 
                intent.putExtra(EXTRA_MESSAGE, GlobalDataPool.urlArticle + oslist.get(+position).get("AID")); 
                startActivity(intent); 
                finish(); 
               } 
              } 
       ); 
      } 
     } catch (JSONException e) { 
      e.printStackTrace(); 
      Toast.makeText(getApplicationContext(), "ERROR: " + e.getMessage(), Toast.LENGTH_LONG).show(); 
     } 
    } 
    } 
} 

更新：对不起，不知道我的当前SpecialAdapter 这里的问题是，我想我必须要管理那里AQuery的imagae下载。 但有人可以帮我吗？

package com.schatten.p5_4; 

import java.util.HashMap; 
import java.util.List; 
import android.content.Context; 
import android.view.View; 
import android.view.ViewGroup; 
import android.widget.SimpleAdapter; 

public class SpecialAdapter extends SimpleAdapter { 
private int[] colors = new int[] {0x30FFFFFF, 0x30DDDDDD }; 

public SpecialAdapter(Context context, List<HashMap<String, String>> items, int resource, String[] from, int[] to) { 
    super(context, items, resource, from, to); 
} 

@Override 
public View getView(int position, View convertView, ViewGroup parent) { 
    View view = super.getView(position, convertView, parent); 
    int colorPos = position % colors.length; 
    view.setBackgroundColor(colors[colorPos]); 

    return view; 
} 
} 

Answer 1

好吧，我已经使用下面的适配器修复它，它的工作原理。 将是很好的意见得到更好的编码，我不知道如果我必须做的所有的东西在getView部分

package com.schatten.p5_4; 

import android.content.Context; 
import android.view.LayoutInflater; 
import android.view.View; 
import android.view.ViewGroup; 
import android.widget.ImageView; 
import android.widget.SimpleAdapter; 
import android.widget.TextView; 

import com.androidquery.AQuery; 

import java.util.HashMap; 
import java.util.List; 

public class SpecialAdapter extends SimpleAdapter { 
//HashMap<String, String> map = new HashMap<String, String>(); 
private int[] colors = new int[]{0x30FFFFFF, 0x30DDDDDD}; 
private List<HashMap<String, String>> data; 

public SpecialAdapter(Context context, List<HashMap<String, String>> items, int resource, String[] from, int[] to) { 
    super(context, items, resource, from, to); 
    data = items; 
} 

@Override 
public View getView(int position, View convertView, ViewGroup parent) { 
    View view = super.getView(position, convertView, parent); 
    ImageView list_image; 
    TextView aid; 
    TextView articletext; 
    TextView preis_qm; 

    if (convertView == null) { 
     LayoutInflater mInflater = (LayoutInflater) parent.getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE); 
     convertView = mInflater.inflate(R.layout.article_list_v, parent, false); 
    } 

    HashMap<String, String> myitem = new HashMap<String, String>(); 
    myitem = data.get(position); 

    aid = (TextView) convertView.findViewById(R.id.tv_aid); 
    preis_qm = (TextView) convertView.findViewById(R.id.tv_preis_qm); 
    articletext = (TextView) convertView.findViewById(R.id.tv_articletext); 
    aid.setText(myitem.get("AID")); 
    articletext.setText(myitem.get("ArtikelText")); 
    preis_qm.setText(myitem.get("Preis_qm")); 

    String myUrl = myitem.get("URL"); 

    if (myUrl.toLowerCase().contains("jpg")) { 
     list_image = (ImageView) convertView.findViewById(R.id.list_image); 
     AQuery aq = new AQuery(convertView); 
     aq.id(list_image).image(myitem.get("URL"), false, false, 200, 0); 
    } 

    return convertView; 
} 

}

Answer 2

您应该在适配器的getView（）方法中设置AQuery。你可以添加适配器的代码吗？