Scaling an image to max available width, keeping aspect ratio and avoiding ImageView extra space

Question

I have this simple layout XML, and a green_square.png file which is 30X30 pixels

Answer 1

In my view, this ImageView extra layout is a bug. I had the same thing happen. As a result, text that I wanted to follow the green_square followed the extra layout. So what I did was specify the text relative to the bottom of the screen. That way, the text would go over the extra layout. I admit, it wasn't the best solution, but it looks much better than having a huge space between the green_square and the text.

Answer 2

Try this,

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

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >

<ImageView
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:background="@color/red"
    android:scaleType="centerCrop"
    android:src="@drawable/green_square" />

</LinearLayout>

Answer 3

<ImageView
        android:id="@+id/game"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:scaleType="centerCrop"
        android:adjustViewBounds="true"
        android:src="@drawable/ic_game" 
        />

this works for me. Full width of parent and center crop to keep aspect ratio

Answer 4

It's so simple. Just make the width fill_parent and height wrap_content. Here is the I figured it out.

<ImageView
    android:id="@+id/game"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:scaleType="centerCrop"
    android:adjustViewBounds="true"
    android:src="@drawable/ic_game" 
    />

Answer 5

Use scale type "fitCenter" or "fitxy"

Answer 6

There lots of great answers here which actually works. I just what to share the way I do this now with a more modern XML syntax, the constraint view. Trust me constraint view rooks!

<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="#394BAB"
    tools:context="com.appdomain.app.apppro.ActivityName">

    <ImageView
        android:id="@+id/nice_img"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="0dp"
        android:src="@drawable/green_square"
        android:scaleType="centerCrop"
        android:adjustViewBounds="true"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toTopOf="parent"/>

</android.support.constraint.ConstraintLayout>

of course the tools:context="com.collectsavings.collect.collectpro.LoginAndRegisterPrompt" and android:src="@drawable/green_square" Should all match your app activity context and drawabl resources respectively.