title: most efficient way of displaying images
body: <p>My app uses 29 images in 2 different classes (and layouts). In 1 layout there is 1 image view that changes between at most 25 of the images, and then the other layout is a scroll view that contains all images where at most 3 or 4 are visible on screen at a time. Previously I had the images saved as .jpg and each is 720*540 and around 200-300kb in size. My app has had out of memory issues after going between my 2 layouts that are using the images; it is using over 100 mb. I did some research on bitmaps and tried them for my images, but they didn't help much because I still get out of memory issues and they increased the .apk size by almost 3 times. What is the most preferred way to load images, is it as a drawable from a .jpg or from a bitmap or some other way? Any suggestions would be appreciated.</p>