android - RelativeLayout 设计问题 : ScrollView between a RelativeLayout and a Button

Question

我的 Activity 布局必须如下所示:

• 屏幕分为 3 个部分(3“行”)
• 第一部分由左侧的图像和旁边的两个 TextView 组成。
• 第二部分是一个大文本，放入 ScrollView 中以便滚动。
• 第三部分只是一个按钮，这个按钮必须始终位于屏幕底部。

因此，第 1 和第 3 部分都必须固定，只有第 2 部分可以滚动。

这是我的代码:

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/relativeLayout0"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent">

<RelativeLayout
    android:id="@+id/relativeLayout1"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content">

    <ImageView
        android:id="@+id/imageView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:src="@drawable/ic_launcher"
        android:layout_alignParentLeft="true"
        android:layout_alignParentTop="true" />

    <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"            
        android:layout_toRightOf="@id/imageView1"
        android:text="TextView" />

    <TextView
        android:id="@+id/textView2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"            
        android:layout_toRightOf="@id/imageView1"
        android:layout_below="@id/textView1"
        android:text="TextView" />

</RelativeLayout>

<RelativeLayout 
    android:id="@+id/relativeLayout2"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_below="@id/relativeLayout1">      

    <ScrollView
        android:id="@+id/scrollView1"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content" >    

        <TextView
            android:id="@+id/textView3"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text " />

    </ScrollView>

</RelativeLayout>

<RelativeLayout 
    android:id="@+id/relativeLayout3"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignBottom="@id/relativeLayout2">

    <Button
        android:id="@+id/button1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Button" />

</RelativeLayout>

</RelativeLayout>

这里的问题很明显:

中间部分的文本可以正常滚动，但问题是当按钮在布局中“开始”时，ScrollView 不会“结束”。

Answer 1

试试这个:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >

    <RelativeLayout
        android:id="@+id/relativeLayout1"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content" >

        <ImageView
            android:id="@+id/imageView1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_alignParentLeft="true"
            android:layout_alignParentTop="true"
            android:src="@drawable/ic_launcher" />

        <TextView
            android:id="@+id/textView1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_toRightOf="@id/imageView1"
            android:text="TextView" />

        <TextView
            android:id="@+id/textView2"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_below="@id/textView1"
            android:layout_toRightOf="@id/imageView1"
            android:text="TextView" />
    </RelativeLayout>

    <RelativeLayout
        android:id="@+id/relativeLayout2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_weight="1"
        android:layout_below="@id/relativeLayout1" >

        <ScrollView
            android:id="@+id/scrollView1"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content" >

            <TextView
                android:id="@+id/textView3"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text BIG BIG text " />
        </ScrollView>
    </RelativeLayout>

    <RelativeLayout
        android:id="@+id/relativeLayout3"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignBottom="@id/relativeLayout2" >

        <Button
            android:id="@+id/button1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Button" />
    </RelativeLayout>

</LinearLayout>