android - 使相对布局中的两个 TextView 占据 50% 的高度

Question

我有一个具有以下项目布局的自定义 ListView :

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="?android:attr/listPreferredItemHeight"
    android:paddingBottom="2dip"
    android:paddingTop="2dip" >

    <ImageView
        android:id="@+id/icon"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:layout_alignParentTop="true"
        android:paddingLeft="6dip" />

    <TextView
        android:id="@android:id/text1"
        android:layout_width="50sp"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:layout_alignParentTop="true"
        android:layout_toRightOf="@id/icon"
        android:ellipsize="marquee"
        android:gravity="center"
        android:paddingLeft="6dip"
        android:singleLine="true"
        android:textAppearance="?android:attr/textAppearanceLarge"
        android:textStyle="bold" />

    <TextView
        android:id="@+id/start_point"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentRight="true"
        android:layout_alignParentTop="true"
        android:layout_toRightOf="@android:id/text1"
        android:ellipsize="marquee"
        android:paddingLeft="6dip"
        android:paddingRight="6dip"
        android:singleLine="true"
        android:textAppearance="?android:attr/textAppearanceSmall" />

    <TextView
        android:id="@+id/end_point"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:layout_alignParentRight="true"
        android:layout_below="@id/start_point"
        android:layout_toRightOf="@android:id/text1"
        android:ellipsize="marquee"
        android:gravity="center_vertical"
        android:paddingLeft="6dip"
        android:paddingRight="6dip"
        android:singleLine="true"
        android:textAppearance="?android:attr/textAppearanceSmall" />

</RelativeLayout>

除了 start_point 和 end_point 的高度不相等外，它显示的大部分与我想要的一样。我尝试了很多东西，但要么以语法错误结束，要么以损坏的布局结束。是否有任何可行的解决方案来实现这一目标？

Answer 1

It shows mostly like I want except that start_point and end_point are not equal in height. I have tried many things but ended either in syntax error or in broken layout. Is there any working solution to achieve that?

像这样在布局中的两个 TextViews 之前插入一个额外的 View ，它将充当为 TextViews 提供等量空间的 anchor :

<RelativeLayout>
    // the icon and the first TextView here

    <View android:id="@+id/anchor" android:layout_centerVertical="true" android:layout_alignParentRight="true"      
        android:layout_width="2dp"
        android:layout_height="0dp"/>

    // the two TextView below it
   <TextView
       android:id="@+id/start_point" android:layout_above="@id/anchor" // the rest of the attributes />

   <TextView
       android:id="@+id/end_point" android:layout_below="@id/anchor" // the rest of the attributes />
</RelativeLayout>