Android app fix

Hi, I have an app which pulls a list of posts which include images and videos of various sizes. The app right now calculates the size(height, since width we are always keeping the full phone screen)of each image and video as we scroll. But we would like to it just calculate the height for the first image in the carousel and zoom or cut the images to fit in the same frame size accordingly. ex 1: Large image, small image => First will show original large size, second small image will show in same frame size but zoomed to fit in(cut image is ok) ex 2: Small image, large image => First will show original small size, second image will be cut to fit in same small frame size. So simply just calculate the height of first image, and keep all next in same frame size