android我自己写了个组合控件RelativeLayout，怎么加入ListView

public class Viewg extends RelativeLayout {
 private TextView number;
 private EditText thing;
 private Button biaozhu;
 private Button delete;
 private int isbiaozhu=0;
 private int xiabiao;
 public Viewg(Context context, AttributeSet attrs, int defStyle) {
 super(context, attrs, defStyle);
 init(context);
 }
 public Viewg(Context context, AttributeSet attrs){
 super(context,attrs);
 init(context);
 }
public Viewg(Context context,int xiabiao){
    super(context);
    this.xiabiao=xiabiao;
    init(context);
}
public void init(Context context){
    Viewg.inflate(context, R.layout.thing, this);
    number=(TextView)findViewById(R.id.num);
    thing=(EditText)findViewById(R.id.neirong);
    biaozhu=(Button)findViewById(R.id.biaozhu);
    delete=(Button)findViewById(R.id.delete);
    number.setText(num[xiabiao-1]);
    this.setBackgroundResource(R.drawable.bwllist);
}

上面是组合控件，我是想点击一下按钮就添加一个这个类到ListView中。
ListView还写适配器吗？如果写的话怎么写，用baseadapter吗？