Discover how to optimize your Android apps for foldable displays, multi-display devices, and large screens in this 35-minute Google I/O'19 conference talk. Explore UX considerations, app continuity, multiple tasks, multiscreen capabilities, and the Play Manager. Learn about security restrictions, new additions like wallpapers and secondary screens, and the foldable emulator. Gain insights into compatibility mode, force desktop mode, and access a comprehensive developer guide to ensure your apps are ready for these innovative device environments.