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查漏补缺之继承BaseAdapter

【查漏补缺之继承BaseAdapter】开发过程中经常用到ListView，因此适配器要非常熟练。因为模式相对固定，所以截取一段代码作为参考：

public class NewsListAdapter extends BaseAdapter { private List data; private Context context; public NewsListAdapter(Listdata, Context context) { this.data = https://www.it610.com/article/data; this.context = context; }public void setData(List data) { this.data = https://www.it610.com/article/data; }@Override public int getCount() { return data.size(); }@Override public Object getItem(int position) { return position; }@Override public long getItemId(int position) { return position; }@Override public View getView(int position, View convertView, ViewGroup parent) { View view; ViewHolder holder; if (convertView == null){ view = View.inflate(context, R.layout.item_news,null); holder = new ViewHolder(); holder.ivIcon= (ImageView) view.findViewById(R.id.iv_icon); holder.tvTitle= (TextView) view.findViewById(R.id.tv_title); holder.tvFrom= (TextView) view.findViewById(R.id.tv_from); holder.tvDate= (TextView) view.findViewById(R.id.tv_date); view.setTag(holder); }else { //复用convertView view = convertView; holder = (ViewHolder) view.getTag(); }//数据填充 NewsBean.ResultBean.DataBean dataBean = data.get(position); holder.tvTitle.setText(dataBean.getTitle()); holder.tvFrom.setText(dataBean.getAuthor_name()); holder.tvDate.setText(dataBean.getThumbnail_pic_s()); if (!TextUtils.isEmpty(dataBean.getThumbnail_pic_s())){ Picasso.with(context) .load(dataBean.getThumbnail_pic_s()) .placeholder(R.drawable.zhanwei) .error(R.drawable.zhanwei) .into(holder.ivIcon); //图片 } return view; }private static class ViewHolder{ ImageView ivIcon; TextView tvTitle,tvFrom,tvDate; } }

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