You also need to avoid hard-coded colors or icons. To support the dark theme, you must set the app’s theme to inherit from a dark theme. Dark theme brings many benefits to developers, including being able to reduce power usage and improving visibility for users with low vision and those who are sensitive to bright light.

Gesture navigation navigating back and to the home screenĪnother new feature that was introduced with Android Q was the new system Dark theme that applies to both the Android system UI and apps running on Android devices. For more details, check out this series of blog posts about gesture navigation and the commit in the Google I/O app repository that extended the content to draw edge-to-edge. The Google I/O 2019 app was one of the first apps to support fully the gestural navigation. Extend app content to draw edge-to-edge.To support gesture navigation, app developers need to do two things: In this post, we’ll highlight several notable changes.Īndroid Q introduced an option for fully gestural navigation, allowing the user to navigate back and to the home screen using only gestures. This year's app substantially modified existing functionality and added several new features.

Today we're releasing the source code for the official Google I/O 2019 Android app. Posted by Takeshi Hagikura, Developer Programs Engineer

Game app source code