Android 9 Development Cookbook - Third Edition

Scaling down large images to avoid Out of Memory exceptions

Working with images can be very memory intensive, often resulting in your application crashing with an Out of Memory exception. This is especially true with pictures taken with the device camera, as they often have a much higher resolution than the device itself.

Loading a higher resolution image than the UI supports doesn't provide any visual benefit to the user. In this example, we'll demonstrate how to take smaller samples of the image for display. We'll use BitmapFactory to first check the image size, then load a scaled-down image.

Here's a screenshot from this recipe showing a thumbnail of a very large image: