onclickをlistview/jsonに設定するとエラーが発生する

Question

コードを実行しようとするとjson例外が発生します。 問題はonclickリスナーで発生します。私は、アプリケーションがここクリックでRSSフィードの記事へ

を行く持ってしようとしているここでの主な活動

public class Blocku extends ListActivity { 

private RssListAdapter adapter; 

/** Called when the activity is first created. */ 
@Override 
public void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    List<JSONObject> jobs = new ArrayList<JSONObject>(); 
    try { 
     jobs = BlockuReader.getLatestRssFeed(); 
    } catch (Exception e) { 
     Log.e("RSS ERROR", "Error loading RSS Feed Stream >> " + e.getMessage() + " //" + e.toString()); 
    } 

    adapter = new RssListAdapter(this,jobs); 
    setListAdapter(adapter); 
} 

protected void onListItemClick(ListView l, View v, int position, long id) { 
     super.onListItemClick(l, v, position, id); 

     String link = null; 
    try { 
     String url = Article.getUrl().toString(); 

     link = adapter.getItem(position).getString(url).toString(); 
     Intent i = new Intent(Intent.ACTION_VIEW); 
      i.setData(Uri.parse(link)); 
      startActivity(i); 
    } catch (JSONException e) { 
     Context context = getApplicationContext(); 
     CharSequence text = "error"; 
     int duration = Toast.LENGTH_SHORT; 

     Toast toast = Toast.makeText(context, text, duration); 
     toast.show(); 
     e.printStackTrace(); 
    } 

    } 

} 

---

アダプタですよ。

public class RssListAdapter extends ArrayAdapter<JSONObject> { 

public RssListAdapter(Activity activity, List<JSONObject> imageAndTexts) { 
    super(activity, 0, imageAndTexts); 
} 


@Override 
public View getView(int position, View convertView, ViewGroup parent) { 

    Activity activity = (Activity) getContext(); 
    LayoutInflater inflater = activity.getLayoutInflater(); 

    // Inflate the views from XML 
    View rowView = inflater.inflate(R.layout.image_text_layout, null); 
    JSONObject jsonImageText = getItem(position); 


    ////////////////////////////////////////////////////////////////////////////////////////////////////// 
    //The next section we update at runtime the text - as provided by the JSON from our REST call 
    //////////////////////////////////////////////////////////////////////////////////////////////////// 
    TextView textView = (TextView) rowView.findViewById(R.id.job_text); 

    try { 
     Spanned text = (Spanned)jsonImageText.get("text"); 
     textView.setText(text); 

    } catch (JSONException e) { 
     textView.setText("JSON Exception"); 
    } 

    return rowView; 

} 


} 

---

および記事クラス

public class Article { 

private long articleId; 
private long feedId; 
private String title; 
private String description; 
private String pubDate; 
private static URL url; 
private String encodedContent; 

private static String link; 
/** 
* @return the articleId 
*/ 
public long getArticleId() { 
    return articleId; 
} 
/** 
* @param articleId the articleId to set 
*/ 
public void setArticleId(long articleId) { 
    this.articleId = articleId; 
} 
/** 
* @return the feedId 
*/ 
public long getFeedId() { 
    return feedId; 
} 
/** 
* @param feedId the feedId to set 
*/ 
public void setFeedId(long feedId) { 
    this.feedId = feedId; 
} 
/** 
* @return the title 
*/ 
public String getTitle() { 
    return title; 
} 
/** 
* @param title the title to set 
*/ 
public void setTitle(String title) { 
    this.title = title; 
} 
/** 
* @return the url 
*/ 
public static URL getUrl() { 
    return url; 
} 
/** 
* @param url the url to set 
*/ 
public void setUrl(URL url) { 
    Article.url = url; 
} 
/** 
* @param description the description to set 
*/ 
public void setDescription(String description) { 
    this.description = description; 
} 
/** 
* @return the description 
*/ 
public String getDescription() { 
    return description; 
} 
/** 
* @param pubDate the pubDate to set 
*/ 
public void setPubDate(String pubDate) { 
    this.pubDate = pubDate; 
} 
/** 
* @return the pubDate 
*/ 
public String getPubDate() { 
    return pubDate; 
} 
/** 
* @param encodedContent the encodedContent to set 
*/ 
public void setEncodedContent(String encodedContent) { 
    this.encodedContent = encodedContent; 
} 
/** 
* @return the encodedContent 
*/ 
public String getEncodedContent() { 
    return encodedContent; 
} 


} 

Answer 1

JSONExceptionは、通常、解析に問題がある場合にスローされます。 JSONの解析方法を確認してください。これは、「あなたが望むサイトをリストしている」という名前のキーの値を取得しようとしていると言います。