How to set maxHeight over DimensionRatio with ConstraintLayout?

Question

I\'m trying to display an image centered in parent with a dimension ratio of 1220:1000 AND a maximum height of 300dp (to keep the image small even with large screen)

Answer 1

If you want to enforce max_height and keep the dimension ratio at the same time, you need to constrain the width based on height. You can achieve that by adding W to your ratio:

app:layout_constraintDimensionRatio="W,1220:1000"

This will constrain the height first and then set the width accordingly to satisfy the ratio.

More info on how this dimension ratio works can be found in the documentation.