Much of the graphics, camera, media, bluetooth, wifi, input handling, etc... stacks are native. There's a massive amount of native code in Android below the ven

Much of the graphics, camera, media, bluetooth, wifi, input handling, etc... stacks are native. There's a massive amount of native code in Android below the veneer of the Java API that apps are given. Many of the higher level constructs are then in Java/Kotlin, though, like the builtin apps, system ui, activity & window managers, etc...