Android开发学习笔记：浅谈GridView(8)

        for (int i = 0; i < images.length; i++) 
        { 
            Picture picture = new Picture(titles[i], images[i]); 
            pictures.add(picture); 
        } 
    } 
 
    @Override
    public int getCount() 
    { 
        if (null != pictures) 
        { 
            return pictures.size(); 
        } else
        { 
            return 0; 
        } 
    } 
 
    @Override
    public Object getItem(int position) 
    { 
        return pictures.get(position); 
    } 
 
    @Override
    public long getItemId(int position) 
    { 
        return position; 
    } 
 
    @Override
    public View getView(int position, View convertView, ViewGroup parent) 
    { 
        ViewHolder viewHolder; 
        if (convertView == null) 
        { 
            convertView = inflater.inflate(R.layout.picture_item, null); 
            viewHolder = new ViewHolder(); 
            viewHolder.title = (TextView) convertView.findViewById(R.id.title); 
            viewHolder.image = (ImageView) convertView.findViewById(R.id.image); 
            convertView.setTag(viewHolder); 
        } else
        { 
            viewHolder = (ViewHolder) convertView.getTag(); 
        } 
        viewHolder.title.setText(pictures.get(position).getTitle());