不能從json文件加載圖像到我的列表視圖

我是新來的android編程我試圖從json文件加載圖像和文本我的文本視圖正在加載，但我的圖像不加載請幫助我。不能從json文件加載圖像到我的列表視圖

Customlistviewadapter

import java.util.List; 

import com.squareup.picasso.Picasso; 
import com.suni.sun.HomeGv; 
import android.app.Activity; 
import android.view.LayoutInflater; 
import android.view.View; 
import android.view.ViewGroup; 
import android.widget.ArrayAdapter; 
import android.widget.ImageView; 
import android.widget.TextView; 

public class CustomListViewAdapter extends ArrayAdapter<HomeGv> { 

    private Activity activity; 

    public CustomListViewAdapter(Activity activity, int resource, 
      List<HomeGv> img) { 
     super(activity, resource, img); 
     this.activity = activity; 
     // TODO Auto-generated constructor stub 
    } 

    @Override 
    public View getView(int position, View convertView, ViewGroup parent) { 
     // TODO Auto-generated method stub 

     ViewHolder holder = null; 
     LayoutInflater inflater = (LayoutInflater) activity.getSystemService(Activity.LAYOUT_INFLATER_SERVICE); 

     if (convertView == null) { 
      convertView = inflater.inflate(R.layout.home_item, parent, false); 
      holder = new ViewHolder(convertView); 
      convertView.setTag(holder); 

     }else { 
      holder = (ViewHolder) convertView.getTag(); 
     } 

     HomeGv thing = (HomeGv) getItem(position); 

     holder.title.setText(thing.getTitle()); 
     holder.date_taken.setText(thing.getDate()); 
     Picasso.with(activity).load(thing.getMedia()).into(holder.image); 

     return convertView; 
    } 

    private static class ViewHolder { 
     private TextView title,date_taken; 
     private ImageView image; 

     public ViewHolder(View v) { 
      title = (TextView) v.findViewById(R.id.grid_item_title); 
      date_taken = (TextView) v.findViewById(R.id.grid_item_date); 
      image = (ImageView) v.findViewById(R.id.grid_item_image); 
     } 
    } 

}

ListViewActivity類

import java.util.ArrayList; 

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

import android.app.Activity; 
import android.os.Bundle; 
import android.util.Log; 
import android.widget.ArrayAdapter; 
import android.widget.ListView; 
import com.suni.sun.JsonParse; 
import com.suni.sun.HomeGv; 


public class ListViewActivity extends Activity { 

    private ListView lv; 
    private ArrayList<HomeGv> img; 
    private ArrayAdapter<HomeGv> adap; 

    private final static String TAG = ListViewActivity.class.getSimpleName(); 
    private final static String url = "http://saicloudica.cloudapp.net/json.txt"; 


    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     // TODO Auto-generated method stub 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.home); 
     lv = (ListView) findViewById(R.id.listView); 
     setListViewAdapter(); 
     getDataFromInternet(); 
    } 

    private void getDataFromInternet(){ 
     new JsonParse(this, url).execute(); 
    } 

    private void setListViewAdapter(){ 
     img = new ArrayList<HomeGv>(); 
     adap = new CustomListViewAdapter(this, R.layout.home_item, img); 
     lv.setAdapter(adap); 
    } 

    public void parseJsonResponse(String result){ 
     Log.i(TAG, result); 
     try{ 
      JSONObject json = new JSONObject(result); 
      JSONArray jArray = new JSONArray(json.getString("items")); 
      for (int i = 0; i < jArray.length(); i++){ 
       JSONObject jObj = jArray.getJSONObject(i); 

       HomeGv imgs = new HomeGv(); 
       imgs.setTitle(jObj.getString("title")); 
       imgs.setDate(jObj.getString("date_taken")); 
       if(json.has("media")) 
       { 
        JSONObject media = jObj.getJSONObject("media"); 
        String medi = media.getString("m"); 

        if(medi != null) 
        { 
         imgs.setMedia(media.getString("m")); 
        } 
       } 


       img.add(imgs); 
      } 
      adap.notifyDataSetChanged(); 
     } catch (JSONException e){ 

      e.printStackTrace(); 
     } 
    } 

    @Override 
    public void onBackPressed() { 
     // TODO Auto-generated method stub 

     finish(); 
    } 
}

首頁類

public class HomeGv { 

    private String title; 
    private String media; 
    private String date_taken; 

    public String getTitle() { 
     return title; 
    } 
    public void setTitle(String title) { 
     this.title = title; 
    } 
    public String getMedia() { 
     return media; 
    } 
    public void setMedia(String media) { 
     this.media = media; 
    } 
    public String getDate() { 
     return date_taken; 
    } 
    public void setDate(String date_taken) { 
     this.date_taken = date_taken; 
    } 
}

登錄：

10-13 12:39:33.835: I/ListViewActivity(5501): {"generator":"http:\/\/www.flickr.com\/","title":"Recent Uploads tagged soccer","items":[{"tags":"iris copyright sports soccer be quick epping voetbal 2015 1887 sportclub silvolde hoofdklasse","author":"[email protected] (SportclubSilvolde)","title":"IMG_9207","description":" <p><a href=\"http:\/\/www.flickr.com\/people\/sportclubsilvolde\/\">SportclubSilvolde<\/a> posted a photo:<\/p> <p><a href=\"http:\/\/www.flickr.com\/photos\/sportclubsilvolde\/21782884471\/\" title=\"IMG_9207\"><img src=\"http:\/\/farm1.staticflickr.com\/681\/21782884471_6834f2c9d8_m.jpg\" width=\"240\" height=\"160\" alt=\"IMG_9207\" \/><\/a><\/p> ","date_taken":"2015-09-27T15:00:50-08:00","link":"http:\/\/www.flickr.com\/photos\/sportclubsilvolde\/21782884471\/","author_id":"[email protected]","published":"2015-09-28T02:59:30Z","media":{"m":"http:\/\/farm1.staticflickr.com\/681\/21782884471_6834f2c9d8_m.jpg"}},{"tags":"iris copyright sports soccer be quick epping voetbal 2015 1887 sportclub silvolde hoofdklasse","author":"[email protected] (SportclubSilvolde)","title":"IMG_9484","description":" <p><a href=\"http:\/\/www.flickr.com\/people\/sportclubsilvolde\/\">SportclubSilvolde<\/a> posted a photo:<\/p> <p><a href=\"http:\/\/www.flickr.com\/photos\/sportclubsilvolde\/21747301246\/\" title=\"IMG_9484\"><img src=\"http:\/\/farm1.staticflickr.com\/736\/21747301246_f03bc953d6_m.jpg\" width=\"240\" height=\"160\" alt=\"IMG_9484\" \/><\/a><\/p> ","date_taken":"2015-09-27T15:58:43-08:00","link":"http:\/\/www.flickr.com\/photos\/sportclubsilvolde\/21747301246\/","author_id":"[email protected]","published":"2015-09-28T02:59:38Z","media":{"m":"http:\/\/farm1.staticflickr.com\/736\/21747301246_f03bc953d6_m.jpg"}},{"tags":"iris copyright sports soccer be quick epping voetbal 2015 1887 sportclub silvolde hoofdklasse","author":"[email protected] (SportclubSilvolde)","title":"IMG_9135","description":" <p><a href=\"http:\/\/www.flickr.com\/people\/sportclubsilvolde\/\">SportclubSilvolde<\/a> posted a photo:<\/p> <p><a href=\"http:\/\/www.flickr.com\/photos\/sportclubsilvolde\/21585600568\/\" title=\"IMG_9135\"><img src=\"http:\/\/farm1.staticflickr.com\/588\/21585600568_bce2bcd47a_m.jpg\" width=\"240\" height=\"160\" alt=\"IMG_9135\" \/><\/a><\/p> ","date_taken":"2015-09-27T14:53:53-08:00","link":"http:\/\/www.flickr.com\/photos\/sportclubsilvolde\/21585600568\/","author_id":"[email protected]","published":"2015-09-28T02:59:28Z","media":{"m":"http:\/\/farm1.staticflickr.com\/588\/21585600568_bce2bcd47a_m.jpg"}},{"tags":"iris copyright sports soccer be quick epping voetbal 2015 1887 sportclub silvolde hoofdklasse","author":"[email protected] (SportclubSilvolde)","title":"IMG_9062","description":" <p><a href=\"http:\/\/www.flickr.com\/people\/sportclubsilvolde\/\">SportclubSilvolde<\/a> posted a photo:<\/p> <p><a href=\"http:\/\/www.flickr.com\/photos\/sportclubsilvolde\/21761757502\/\" title=\"IMG_9062\"><img src=\"http:\/\/farm6.staticflickr.com\/5648\/21761757502_e18ee1b76f_m.jpg\" width=\"240\" height=\"160\" alt=\"IMG_9062\" \/><\/a><\/p> ","date_taken":"2015-09-27T14:48:06-08:00","link":"http:\/\/www.flickr.com\/photos\/sportclubsilvolde\/21761757502\/","author_id":"[email protected]","published":"2015-09-28T02:59:27Z","media":{"m":"http:\/\/farm6.staticflickr.com\/5648\/21761757502_e18ee1b76f_m.jpg"}},{"tags":"iris copyright sports soccer be quick epping voetbal 2015 1887 sportclub silvolde hoofdklasse","author":"[email protected] (SportclubSilvolde)","title":"IMG_9718","description":" <p><a href=\"http:\/\/www.flickr.com\/people\/sportclubsilvolde\/\">SportclubSilvolde<\/a> posted a photo:<\/p> <p><a href=\"http:\/\/www.flickr.com\/photos\/sportclubsilvolde\/21773428785\/\" title=\"IMG_9718\"><img src=\"http:\/\/farm6.staticflickr.com\/5798\/21773428785_256689c88f_m.jpg\" width=\"240\" height=\"160\" alt=\"IMG_9718\" \/><\/a><\/p> ","date_taken":"2015-09-27T16:27:04-08:00","link":"http:\/\/www.flickr.com\/photos\/sportclubsilvolde\/21773428785\/","author_id":"[email protected]","published":"2015-09-28T02:59:43Z","media":{"m":"http:\/\/f 
    10-13 12:39:34.425: I/JsonParse(5501): {"generator":"http:\/\/www.flickr.com\/","title":"Recent Uploads tagged soccer","items":[{"tags":"iris copyright sports soccer be quick epping voetbal 2015 1887 sportclub silvolde hoofdklasse","author":"[email protected] (SportclubSilvolde)","title":"IMG_9207","description":" <p><a href=\"http:\/\/www.flickr.com\/people\/sportclubsilvolde\/\">SportclubSilvolde<\/a> posted a photo:<\/p> <p><a href=\"http:\/\/www.flickr.com\/photos\/sportclubsilvolde\/21782884471\/\" title=\"IMG_9207\"><img src=\"http:\/\/farm1.staticflickr.com\/681\/21782884471_6834f2c9d8_m.jpg\" width=\"240\" height=\"160\" alt=\"IMG_9207\" \/><\/a><\/p> ","date_taken":"2015-09-27T15:00:50-08:00","link":"http:\/\/www.flickr.com\/photos\/sportclubsilvolde\/21782884471\/","author_id":"[email protected]","published":"2015-09-28T02:59:30Z","media":{"m":"http:\/\/farm1.staticflickr.com\/681\/21782884471_6834f2c9d8_m.jpg"}},{"tags":"iris copyright sports soccer be quick epping voetbal 2015 1887 sportclub silvolde hoofdklasse","author":"[email protected] (SportclubSilvolde)","title":"IMG_9484","description":" <p><a href=\"http:\/\/www.flickr.com\/people\/sportclubsilvolde\/\">SportclubSilvolde<\/a> posted a photo:<\/p> <p><a href=\"http:\/\/www.flickr.com\/photos\/sportclubsilvolde\/21747301246\/\" title=\"IMG_9484\"><img src=\"http:\/\/farm1.staticflickr.com\/736\/21747301246_f03bc953d6_m.jpg\" width=\"240\" height=\"160\" alt=\"IMG_9484\" \/><\/a><\/p> ","date_taken":"2015-09-27T15:58:43-08:00","link":"http:\/\/www.flickr.com\/photos\/sportclubsilvolde\/21747301246\/","author_id":"[email protected]","published":"2015-09-28T02:59:38Z","media":{"m":"http:\/\/farm1.staticflickr.com\/736\/21747301246_f03bc953d6_m.jpg"}},{"tags":"iris copyright sports soccer be quick epping voetbal 2015 1887 sportclub silvolde hoofdklasse","author":"[email protected] (SportclubSilvolde)","title":"IMG_9135","description":" <p><a href=\"http:\/\/www.flickr.com\/people\/sportclubsilvolde\/\">SportclubSilvolde<\/a> posted a photo:<\/p> <p><a href=\"http:\/\/www.flickr.com\/photos\/sportclubsilvolde\/21585600568\/\" title=\"IMG_9135\"><img src=\"http:\/\/farm1.staticflickr.com\/588\/21585600568_bce2bcd47a_m.jpg\" width=\"240\" height=\"160\" alt=\"IMG_9135\" \/><\/a><\/p> ","date_taken":"2015-09-27T14:53:53-08:00","link":"http:\/\/www.flickr.com\/photos\/sportclubsilvolde\/21585600568\/","author_id":"[email protected]","published":"2015-09-28T02:59:28Z","media":{"m":"http:\/\/farm1.staticflickr.com\/588\/21585600568_bce2bcd47a_m.jpg"}},{"tags":"iris copyright sports soccer be quick epping voetbal 2015 1887 sportclub silvolde hoofdklasse","author":"[email protected] (SportclubSilvolde)","title":"IMG_9062","description":" <p><a href=\"http:\/\/www.flickr.com\/people\/sportclubsilvolde\/\">SportclubSilvolde<\/a> posted a photo:<\/p> <p><a href=\"http:\/\/www.flickr.com\/photos\/sportclubsilvolde\/21761757502\/\" title=\"IMG_9062\"><img src=\"http:\/\/farm6.staticflickr.com\/5648\/21761757502_e18ee1b76f_m.jpg\" width=\"240\" height=\"160\" alt=\"IMG_9062\" \/><\/a><\/p> ","date_taken":"2015-09-27T14:48:06-08:00","link":"http:\/\/www.flickr.com\/photos\/sportclubsilvolde\/21761757502\/","author_id":"[email protected]","published":"2015-09-28T02:59:27Z","media":{"m":"http:\/\/farm6.staticflickr.com\/5648\/21761757502_e18ee1b76f_m.jpg"}},{"tags":"iris copyright sports soccer be quick epping voetbal 2015 1887 sportclub silvolde hoofdklasse","author":"[email protected] (SportclubSilvolde)","title":"IMG_9718","description":" <p><a href=\"http:\/\/www.flickr.com\/people\/sportclubsilvolde\/\">SportclubSilvolde<\/a> posted a photo:<\/p> <p><a href=\"http:\/\/www.flickr.com\/photos\/sportclubsilvolde\/21773428785\/\" title=\"IMG_9718\"><img src=\"http:\/\/farm6.staticflickr.com\/5798\/21773428785_256689c88f_m.jpg\" width=\"240\" height=\"160\" alt=\"IMG_9718\" \/><\/a><\/p> ","date_taken":"2015-09-27T16:27:04-08:00","link":"http:\/\/www.flickr.com\/photos\/sportclubsilvolde\/21773428785\/","author_id":"[email protected]","published":"2015-09-28T02:59:43Z","media":{"m":"http:\/\/farm6.st 
    10-13 12:39:34.425: I/Choreographer(5501): Skipped 77 frames! The application may be doing too much work on its main thread. 
    10-13 12:39:34.495: W/Settings(5501): Setting airplane_mode_on has moved from android.provider.Settings.System to android.provider.Settings.Global, returning read-only value.

來源

2015-10-13 sun

您需要使用庫來顯示列表中的圖像。如着名的圖書館像畢加索或凌空或univeral圖像加載器 – Moudiz

@Moudiz請看代碼正確，他已經在使用畢加索 –

@Heamanth請發佈您的完整日誌，並檢查您的JSON語法[JSONLint]（http://jsonlint.com/ ） –

你可以使用它也採用了圖像加載Aquery，下載aquery罐子，在你的項目導入，並嘗試下面的代碼

 public class CustomAdapterAccept extends BaseAdapter{ 

    private Context context; 
    private ArrayList<HashMap<String,String>> listData; 
    private AQuery aQuery; 

    private static final String TAG_NAME="name"; 
    private static final String TAG_PROFILE="profile_id"; 
    private static final String TAG_IMAGE="image"; 
    private static final String TAG_CAST="cast"; 
    private static final String TAG_AGE="age"; 
    private static final String TAG_LOCATION="location"; 


    public CustomAdapterAccept(Context context,ArrayList<HashMap<String,String>> listData) { 
     this.context = context; 
     this.listData=listData; 
     aQuery = new AQuery(this.context); 
    } 

    @Override 
    public int getCount() { 
     return listData.size(); 
    } 

    @Override 
    public Object getItem(int position) { 
     return listData.get(position); 
    } 

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

    @Override 
    public View getView(final int position, View convertView, ViewGroup parent) { 
     ViewHolder holder; 
     if (convertView == null) { 
      holder = new ViewHolder(); 
      convertView = LayoutInflater.from(context).inflate(R.layout.list_item_acceptedlist, null); 
      holder.propic = (ImageView) convertView.findViewById(R.id.propicaccept); 
      holder.txtproname = (TextView) convertView.findViewById(R.id.txtpronameacptedlist); 
      holder.txtproid = (TextView) convertView.findViewById(R.id.txtproidacptedlist); 
      holder.txtprofilecast = (TextView) convertView.findViewById(R.id.txtprofilecastacptedlist); 
      holder.txtprofileage = (TextView) convertView.findViewById(R.id.txtprofileageacptedlist); 
      holder.txtprofileplace = (TextView) convertView.findViewById(R.id.txtprofileplaceacptedlist); 

      convertView.setTag(holder); 
     }else{ 
      holder = (ViewHolder) convertView.getTag(); 
     } 

     holder.txtproname.setText(listData.get(position).get(TAG_NAME)); 
     holder.txtproid.setText(listData.get(position).get(TAG_PROFILE)); 
     holder.txtprofilecast.setText(listData.get(position).get(TAG_CAST)); 
     holder.txtprofileage.setText(listData.get(position).get(TAG_AGE)); 
     holder.txtprofileplace.setText(listData.get(position).get(TAG_LOCATION)); 

     aQuery.id(holder.propic).image(listData.get(position).get(TAG_IMAGE),true,true,0,R.drawable.ic_launcher); 

     // image parameter : 1 : memory cache,2:file cache,3:target width,4:fallback image 
     return convertView; 
    } 
    class ViewHolder{ 
     ImageView propic; 
     TextView txtproname; 
     TextView txtproid; 
     TextView txtprofilecast; 
     TextView txtprofileage; 
     TextView txtprofileplace; 
    } 

}

來源

2015-10-13 12:52:46

是不是可能的picasso – sun

@HeamanthVarma picasso比Aquery和Aquery更有效率已棄用 –

剛剛從代碼中刪除這一條件if(json.has("media"))和它將工作。由於您正在檢查media作爲主JSON中的標記，但它不包含一個標記。

來源

2015-10-14 05:39:34

不能從json文件加載圖像到我的列表視圖

回答

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