In this course we will learn how to add a Dark Theme support to Android 10 And Pre Android 10 Device . Android 10 introduced a system Dark theme setting, and if you want to build a modern apps your app should support the system setting as well as let users override to their preferred theme. See how to add Day Night themes into your app on Android 10 and earlier versions of Android, and then let your users decide whether to follow the system setting. You'll also learn how to go to a dark theme in battery saver mode in Pre Android 10 Device