How to use

1. Add as a library project
2. Add xmlns:marijnvdwerf="http://schemas.android.com/apk/res-auto" to your layout xml
3. Insert a <nl.marijnvdwerf.layouts.FixedAspectRatioFrameLayout /> view
4. Set the aspect ratio by adding a marijnvdwerf:aspectRatio="1.77" attribute
5. Specify in which direction the element should change size by adding marijnvdwerf:stretchMode="vertical"