public class MyAdapter extends MyBaseAdapter {
  public MyAdapter(List<Student> data) {
    super(data);
  }
  @Override
  public View getView(int position, View convertView, ViewGroup parent) {
    //获取holder持有对象
    ViewHolder holder = ViewHolder.getHolder(convertView,parent,position, R.layout.list_item);
    //获取holder对象中所有的控件
    TextView tvName = holder.getView(R.id.mTv1);
    //对控件进行操作，实现相应的方法
    TextView tvSex = holder.getView(R.id.mTv2);
    tvName.setText(data.get(position).getName());
    tvSex.setText(data.get(position).getSex());
    //返回对应的布局
    return holder.getConvertView();
  }
}

public abstract class MyBaseAdapter extends BaseAdapter {
  protected List<Student> data;
  public MyBaseAdapter (List<Student> data){
    this.data = data;
  }
  @Override
  public int getCount() {
    return data == null ? 0 : data.size();
  }

  @Override
  public Object getItem(int position) {
    return data.get(position);
  }

  @Override
  public long getItemId(int position) {
    return position;
  }

  @Override
  public View getView(int position, View convertView, ViewGroup parent) {
    //将相同的实现抽取到父类的这里，这里是固定的
    ViewHolder holder = ViewHolder.getHolder(convertView,parent,position, R.layout.list_item);
    //然后为子类提供一个具体实现的方法
    setData(holder,data.get(position));
    //这里也是相同的返回代码，也是固定的
    return holder.getConvertView();
  }
  //将这个方法设为抽象的，让他的子类必须去实现
  public abstract void setData(ViewHolder holder,T t);
}

public class MyAdapter extends MyBaseAdapter {
  public MyAdapter(List<Student> data) {
    super(data);
  }
  @Override
  public void setData(ViewHolder holder, Student t) {
    TextView tvName = holder.getView(R.id.mTv1);
    tvName.setText(t.getName());
    TextView tvSex = holder.getView(R.id.mTv2);
    tvSex.setText(t.getSex());
  }
}