ListView的优化

• 重用convertView

public View getView(int position, View convertView, ViewGroup parent) {
        if (convertView == null) {
            convertView = LayoutInflater.from(context).inflate(R.layout.section_list_item1, null);
        }
        TextVie wtv_name = (TextView) convertView.findViewById(R.id.contact_contactinfoitem_tv_name);
        TextVie wtv_phone = (TextView) convertView.findViewById(R.id.contact_contactinfoitem_tv_phoneNum);
        Contact Info1confo = contacts.get(position);
        if (confo != null) {//toseteveryitem'stext 
            tv_name.setText(confo.getContactName());
            tv_phone.setText(confo.getContact_Phone());
        }
        return convertView;
}

• 使用ViewHolder

public View getView(int position, View convertView, ViewGrou pparent) {
        ViewHolder holder;
        if (convertView == null) {
            convertView = LayoutInflater.from(context).inflate(R.layout.section_list_item1, null);
            holder = newViewHolder();
            holder.tv_name = (TextView) convertView.findViewById(R.id.contact_contactinfoitem_tv_name);
            holder.tv_phone = (TextView) convertView.findViewById(R.id.contact_contactinfoitem_tv_phoneNum);
            convertView.setTag(holder);
        } else {
            holder = (ViewHolder) convertView.getTag();
        }
        Contact Info1confo = contacts.get(position);
        Log.i("my", "confo" + confo.getContactName());
        if (confo != null) {//toseteveryitem'stext 

            holder.tv_name.setText(confo.getContactName());
            holder.tv_phone.setText(confo.getContact_Phone());
        }
        return convertView;
}

class ViewHolder{
    TextViewtv_name,tv_phone;
}

• 图片三级缓存
• 监听滑动事件
• 少用透明View
• 开启硬件加速