How to scale an Image in ImageView to keep the aspect ratio

Question

In Android, I defined an ImageView\'s layout_width to be fill_parent (which takes up the full width of the phone).

If the imag

Answer 1

This is how it worked for me inside a ConstraintLayout:

Then in code, I set the drawable as:

ImageView imgView = findViewById(R.id.myImg);
imgView.setImageDrawable(ResourcesCompat.getDrawable(getResources(), R.drawable.image_to_show, null));

This fits the image nicely according to its aspect ratio and keeps it in centre.