How to stretch three images across the screen preserving aspect ratio?

Question

I need to display three same size images (200 X 100) side by side (no gaps) on top of the screen. They should occupy entire width of the screen and preserve aspect ratio. Is it possible to accomplish that using only layout xml file, or I need to use java code?
Solution shoud be resolution independant... Can anybody post a solution or link for this (or similar) problem? Thanks!

I am currently trying to solve the same problem! Did not find a solution yet :(. might work of we wrote our own ImageView that automatically adjusts its height? But would be nicer to use the original ImageView. — Patrick Boos
Here is a simple magic formula that will solve the problem in some cases: stackoverflow.com/a/23777047/294884 — Fattie

Patrick Boos Patrick Boos · Accepted Answer · 2011-01-14T05:52:02

Got it working! But as I said above, you need to create your own class. But it is pretty small. I created it with the help of this Bob Lee's answer in this post: Android: How to stretch an image to the screen width while maintaining aspect ratio?

package com.yourpackage.widgets;

import android.content.Context;
import android.util.AttributeSet;
import android.widget.ImageView;

public class AspectRatioImageView extends ImageView {

    public AspectRatioImageView(Context context) {
        super(context);
    }

    public AspectRatioImageView(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    public AspectRatioImageView(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
    }

    @Override
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
        int width = MeasureSpec.getSize(widthMeasureSpec);
        int height = width * getDrawable().getIntrinsicHeight() / getDrawable().getIntrinsicWidth();
        setMeasuredDimension(width, height);
    }
}

Now to use it in the XML:

<com.yourpackage.widgets.AspectRatioImageView 
    android:id="@+id/image"
    android:src="@drawable/yourdrawable" 
    android:layout_width="match_parent" 
    android:layout_height="wrap_content"
    android:layout_alignParentTop="true" 
    android:layout_centerHorizontal="true" 
    android:adjustViewBounds="true" />

Have fun!

=====================================

Found another way to do the same only in XML by using android:adjustViewBounds="true". Here an example:

<LinearLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content" >

    <ImageView
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_weight="1"
        android:adjustViewBounds="true"
        android:src="@drawable/image1" />

    <ImageView
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_weight="1"
        android:adjustViewBounds="true"
        android:src="@drawable/image2" />


    <ImageView
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_weight="1"
        android:adjustViewBounds="true"
        android:src="@drawable/image2" />

</LinearLayout>

How to stretch three images across the screen preserving aspect ratio?

4 Answers