在linearlayout中拉伸图像按钮以使用可用空间

Question

I've been playing with some XML in order to achieve the following;

first row is a banner (works fine). Then; I have 3 buttons on each row. I want the buttons to take up all horizontal space (so; screen width diveded by 3). Also, the images on the buttons should resize to that width, without changing aspect ratio!. How can this be done?

Next; if I add rows of ImageButtons, how should I 'shell' the LinearLayouts in a scrollview to maintain the width distribution for 3 buttons?

thnx

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:layout_centerHorizontal="true"
    android:orientation="vertical" >

    <ImageView
        android:id="@+id/blogbanner"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:scaleType="fitXY"
        android:src="@drawable/test_banner_ad" />

    <LinearLayout
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:layout_weight="1" >

        <ImageButton
            android:id="@+id/imageButton1"
            android:layout_width="wrap_content"
            android:layout_height="fill_parent"
            android:layout_weight="1"
            android:scaleType="fitXY"
            android:src="@drawable/trololo" />

        <ImageButton
            android:id="@+id/imageButton2"
            android:layout_width="wrap_content"
            android:layout_height="fill_parent"
            android:layout_weight="1"
            android:scaleType="matrix"
            android:src="@drawable/scout" />

        <ImageButton
            android:id="@+id/imageButton3"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:scaleType="fitEnd"
            android:src="@drawable/painting" />

    </LinearLayout>

    <LinearLayout
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:layout_weight="1" >

        <ImageButton
            android:id="@+id/imageButton4"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:src="@drawable/whoop" />

        <ImageButton
            android:id="@+id/imageButton5"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:src="@drawable/drown" />

        <ImageButton
            android:id="@+id/imageButton6"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:src="@drawable/love" />
    </LinearLayout>



    <LinearLayout
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:layout_weight="1" >

        <ImageButton
            android:id="@+id/imageButton7"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:src="@drawable/shredder" />

        <ImageButton
            android:id="@+id/imageButton8"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:src="@drawable/frog" />

        <ImageButton
            android:id="@+id/imageButton9"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:src="@drawable/yeah03" />
    </LinearLayout>
</LinearLayout>

Answer 1

Put the 3 buttons of each row into another horizontal layout, then use the " weight " attribute to define their widths.

The images would need to have dimensions "fill_parent" & use scaleXY .