Android ScrollView里面嵌套ListView 显示异常（只有显示一个Item）

public class AlreadyListView extends ListView {

private Context context;

public AlreadyListView(Context context) {
this(context, null);
}

public AlreadyListView(Context context, AttributeSet attrs) {
this(context, attrs, 0);
}

public AlreadyListView(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
this.context = context;
}

//从新测量ListView的高度
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
int expandSpec = MeasureSpec.makeMeasureSpec(Integer.MAX_VALUE >> 2, MeasureSpec.AT_MOST);
super.onMeasure(widthMeasureSpec, expandSpec);
}
}

<ScrollView
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:fillViewport="true">
<cn.passiontec.posmini.view.AlreadyListView
android:id="@+id/lv_orderdetails"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:divider="@null"
android:visibility="visible"></cn.passiontec.posmini.view.AlreadyListView>