Adding view to bottom of layout inside a scrollvie

Question

So my layout looks basically like this:

<ScrollView>
    <RelativeLayout>
        <BunchOfViews/>
        <ImageView android:layout_alignParentBottom="true"/>
    </RelativeLayout>
</ScrollView>

I have the ScrollView so all of the layout always is visible no matter the height of the screen. The problem is that on a very high screen, I still want my ImageView to be at the bottom. However, a child of a ScrollView don't seem to have a defined bottom. The View is placed at the top of the layout. How can I solve this problem in a neat way?

Answer 1

From: http://code.google.com/p/k9mail/source/browse/k9mail/trunk/res/layout/account_setup_basics.xml?r=1314

This should help you:

<RelativeLayout
        android:layout_marginTop="-45dip" 
        android:padding="0dip"
        android:layout_alignParentBottom="true"
        android:gravity="bottom|right" 
        android:background="@android:drawable/bottom_bar"
        android:layout_height="fill_parent"
        android:layout_width="fill_parent">
        <Button
            android:id="@+id/manual_setup"
            android:text="@string/account_setup_basics_manual_setup_action"
            android:minWidth="@dimen/button_minWidth"
            android:layout_height="wrap_content"
            android:layout_width="wrap_content"
            android:layout_marginBottom="-4dip" 
            android:layout_alignParentLeft="true"
            android:layout_centerVertical="false" 
            />
        <Button
            android:id="@+id/next"
            android:text="@string/next_action"
            android:minWidth="@dimen/button_minWidth"
            android:layout_height="wrap_content"
            android:layout_width="wrap_content"
            android:drawableRight="@drawable/button_indicator_next"
            android:layout_marginBottom="-4dip" 
            android:layout_alignParentRight="true"
            android:layout_centerVertical="false" 
            />
    </RelativeLayout>

Answer 2

Joel Malone's answer Adding view to bottom of layout inside a scrollview does that trick. My solution is almost the same, except that I use Space widget to do the work of filling the rest height inside the parent layout. Like this:

<ScrollView
    android:layout_width="match_parent"
    android:layout_height="match_parent
    android:fillViewport="true"
    >
    <LinearLayout
        android:orientation="vertical"
        android:layout_height="wrap_content"
        >
        <android.support.v4.widget.Space
            android:layout_height="match_parent"
            android:layout_weight="1"
            />
    <ImageView
        android:layout_height="wrap_content"
        android:src="@drawable/footer_image"
        />
    </LinearLayout>
</ScrollView>

Attention:

• fill_parent in the other answers is noted as deprecated for a long time;
• Compare to an empty LinearLayout to fill the rest of parent layout, I think Space is much more appropriate(it's designed to do that job.)
• Finally, don't forget that important attribute at the beginning of ScrollView: android:fillViewport="true". They together make this trick.