ScrollView 嵌套ListView 滑动冲突，与显示不全

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

/**
*
* @author jiarh
*2014-8-14
*/
public class UserListView extends ListView {
public UserListView(Context context) {
super(context);
}

public UserListView(Context context, AttributeSet attrs) {
super(context, attrs);
}

public UserListView(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
}

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

super.onMeasure(widthMeasureSpec, expandSpec);
}

}