scrollview中嵌入listview动态计算listview的高度

package com.subapps.ewtodo.util;


import android.content.Context;
import android.util.AttributeSet;
import android.widget.ListView;


public class MyListView extends ListView{


public MyListView(Context context) {
super(context);
// TODO Auto-generated constructor stub
}

public MyListView(Context context, AttributeSet attrs) {
super(context, attrs);
// TODO Auto-generated constructor stub
}

public MyListView(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
// TODO Auto-generated constructor stub
}

@Override  
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {  
    int expandSpec = MeasureSpec.makeMeasureSpec(Integer.MAX_VALUE >> 2, MeasureSpec.AT_MOST);  
        super.onMeasure(widthMeasureSpec, expandSpec);   
    }  

}