Android 优化方式

一: convertView复用

@Override
public View getView(int position, View convertView, ViewGroup parent) {
    if (convertView == null) {
        convertView = View.inflate(context, R.layout.layout_pic_item,null);
    }
    TextView tvDis = (TextView) convertView.findViewById(R.id.tv_item_picture_desc);
    tvDis.setText("设置数据");
    return convertView;
}

二:ViewHolder的使用

   @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        ViewHolder holder;
        View itemView = null;
        if (convertView == null) {
            itemView = View.inflate(context, R.layout.item_news_data, null);
            holder = new ViewHolder(itemView);
            itemView.setTag(holder);
        } else {
            itemView = convertView;
            holder = (ViewHolder) itemView.getTag();
        }
        NewsBean newsBean = newsListDatas.get(position);
        holder.tvNewsTitle.setText(newsBean.title);
        return itemView;
    }
}

public class ViewHolder {
    @ViewInject(R.id.iv_item_news_icon)
    private ImageView ivNewsIcon;

    public ViewHolder(View itemView) {
        ViewUtils.inject(this, itemView);
    }
}

三:ViewHolder的复用

@Override
    public View getView(final int position, View convertView, ViewGroup parent) {
        ViewHolder viewHolder = null;
        if (convertView == null) {
            convertView = mLayoutInflater.inflate(R.layout.item_address_layout, null);
            viewHolder = new ViewHolder(convertView);
            convertView.setTag(viewHolder);
        }else{
            viewHolder =(ViewHolder) convertView.getTag();
        }
        AddressBean addressBean = addressBeans.get(position);
        }
        return convertView;
    }