Android如何在一个线性布局里完美显示两个listview啊？

<ScrollView
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="@dimen/size_30_dp"
        android:fadingEdge="none" >


        <LinearLayout
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:gravity="center_horizontal"
            android:orientation="vertical" >


            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_gravity="left"
                android:layout_marginLeft="@dimen/size_12_dp"
                android:text="@string/text_task_personal"
                android:textColor="@color/text_task_personal_color"
                android:textSize="@dimen/size_16" />


            <com.xxx.view.MyListView
                android:id="@+id/gtask_listview_doing"
                style="@style/inventory_view_list_style"
                android:layout_width="fill_parent"
                android:layout_height="wrap_content"
                android:layout_marginTop="@dimen/detail_top"
                android:background="@color/white" />


            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_gravity="left"
                android:layout_marginLeft="@dimen/size_12_dp"
                android:text="@string/text_task_team"
                android:textColor="@color/text_task_team_color"
                android:textSize="@dimen/size_16" />


            <com.xxx.view.MyListView
                android:id="@+id/gtask_listview_finished"
                style="@style/inventory_view_list_style"
                android:layout_width="fill_parent"
                android:layout_height="wrap_content"
                android:layout_marginBottom="@dimen/detail_top"
                android:background="@color/white" />
        </LinearLayout>
    </ScrollView>

package com.xxx.view;
import android.content.Context;
import android.widget.ListView;

public class MyListView extends ListView {
    public MyListView(Context context) {
        super(context);
    }


    public MyListView(Context context, android.util.AttributeSet attrs) {
        super(context, attrs);
    }


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