如何获取arraylist在自己的适配器中的位置

-1

我想将arraylist（项目）的位置设置到我自己的listview适配器中。如何获取arraylist在自己的适配器中的位置

holder.txtViewTitle.setText(title.get(position));

但我得到了错误。请检查以下代码。

我也得到了setImageResource的错误。

holder.imgViewLogo.setImageResource(images[position]);

谢谢。

public class LazyAdapter extends BaseAdapter{ 

private activites context; 
private ArrayList<String> title; 
private String[] images; 
private LayoutInflater inflater; 


public LazyAdapter(activites activites,String[] img ,ArrayList<String> items) { 
    super(); 

    this.context = activites; 
    this.title = items; 
    this.images = img; 

} 

@Override 
public int getCount() { 
    // TODO Auto-generated method stub 
    return title.size(); 
} 

@Override 
public Object getItem(int position) { 
    // TODO Auto-generated method stub 
    return null; 
} 

@Override 
public long getItemId(int position) { 
    // TODO Auto-generated method stub 
    return 0; 
} 

public static class ViewHolder 
{ 
    ImageView imgViewLogo; 
    TextView txtViewTitle; 

} 

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

    ViewHolder holder; 
    if(convertView==null) 
    { 
     holder = new ViewHolder(); 
     convertView = inflater.inflate(R.layout.activity_listitem, null); 

     holder.imgViewLogo = (ImageView) convertView.findViewById(R.id.activity_list_logo); 
     holder.txtViewTitle = (TextView) convertView.findViewById(R.id.activity_list_title); 

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

    holder.imgViewLogo.setImageResource(images[position]); 
    holder.txtViewTitle.setText(title.get(position)); 


    return convertView; 
} 

}

来源

2012-04-17 Rahul Patel

，如果你得到了error.post logcat的,,, – 2012-04-17 09:43:40

可以粘贴堆栈跟踪在这里，也其中U用来创建项目和IMG – Triode 2012-04-17 09:44:53

'代码我错误“你如何期待任何人猜测这是什么错误？当真？ – njzk2 2014-08-05 13:45:02

这里的问题是，我认为：

private String[] images;

你应该把它声明：

private Integer[] images;

希望这将在以下overidden帮助

来源

2012-04-17 09:53:56

public class LazyAdapter extends BaseAdapter{ 

private activites context; 
private ArrayList<String> title; 
private String[] images; 
private LayoutInflater inflater; 
Bitmap myBitmap; 


public LazyAdapter(activites activites,String[] img ,ArrayList<String> items) { 
    super(); 

    this.context = activites; 
    this.title = items; 
    this.images = img; 

} 

@Override 
public int getCount() { 
    // TODO Auto-generated method stub 
    return title.size(); 
} 

@Override 
public Object getItem(int position) { 
    // TODO Auto-generated method stub 
    return null; 
} 

@Override 
public long getItemId(int position) { 
    // TODO Auto-generated method stub 
    return 0; 
} 

public static class ViewHolder 
{ 
    ImageView imgViewLogo; 
    TextView txtViewTitle; 

} 

@Override 
public View getView(int position, View convertView, ViewGroup parent) { 
    // TODO Auto-generated method stub 
try { 
         url = new URL(images[position]); 
         connection = (HttpURLConnection) url 
            .openConnection(); 

         connection.setDoInput(true); 


          connection.connect(); 
          connection.setReadTimeout(120000); 
          InputStream  input = connection.getInputStream(); 
          myBitmap = BitmapFactory.decodeStream(input); 

          } catch (IOException e) { 
         e.printStackTrace(); 
         return null; 
        } 
    ViewHolder holder; 
    if(convertView==null) 
    { 
     holder = new ViewHolder(); 
     convertView = inflater.inflate(R.layout.activity_listitem, null); 

     holder.imgViewLogo = (ImageView) convertView.findViewById(R.id.activity_list_logo); 
     holder.txtViewTitle = (TextView) convertView.findViewById(R.id.activity_list_title); 

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

    holder.imgViewLogo.setImageBitmap(myBitmap); 
    holder.txtViewTitle.setText(title.get(position)); 


    return convertView; 
} 

}

来源

2012-04-17 11:13:41 Himanshu

我得到您的给定解决方案相同的错误。 eclipse给我警告改变setImageResource（）; – 2012-04-17 11:26:35

什么错误给你可以发布该错误。 – Himanshu 2012-04-17 11:32:50

ImageView类型中的setImageResource（int）方法不适用于参数（位图）。 – 2012-04-17 11:40:37

小幅盘整方法。试试这个，让我知道

@Override 
public int getCount() { 
    // TODO Auto-generated method stub 
    return title.size(); 
} 

@Override 
public Object getItem(int position) { 
    // TODO Auto-generated method stub 
    return position; 
} 
@Override 
public long getItemId(int position) { 
    // TODO Auto-generated method stub 
    return position; 
}

来源

2012-04-17 11:39:42

如何获取arraylist在自己的适配器中的位置

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