IssueTracker

Component used: androidx.core:core-ktx Version used: 1.9.0 Devices/Android versions reproduced on: LG (API 26), OnePlus (API 31)

I am following this advice to display content edge-to-edge in my app.

To display a splashscreen in my app I'm setting a different theme in the manifest which is then changed in onCreate with setTheme.

The code below works perfectly fine on my OnePlus (API 31) as well as on my LG G6 (API 26).

// WORKS ON API 26 AND API 31
override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        injector.inject(this)
        setTheme(...)
        setContentView(...)
        WindowCompat.setDecorFitsSystemWindows(window, false)
    }

This however is not working properly on my LG G6 (API 26). There is still the splashscreen theme set, so I see my app logo behind UI elements.

// DOES NOT WORK ON API 26; WORKS ON API 31
override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        injector.inject(this)
        WindowCompat.setDecorFitsSystemWindows(window, false)
        setTheme(...)
        setContentView(...)
    }

When I look at the implementation of WindowCompat.setDecorFitsSystemWindows, I see there are indeed two different versions for both of my smartphones.

public static void setDecorFitsSystemWindows(@NonNull Window window,
            final boolean decorFitsSystemWindows) {
        if (Build.VERSION.SDK_INT >= 30) {
            Api30Impl.setDecorFitsSystemWindows(window, decorFitsSystemWindows);
        } else if (Build.VERSION.SDK_INT >= 16) {
            Api16Impl.setDecorFitsSystemWindows(window, decorFitsSystemWindows);
        }
    }

I consider this a bug since I'm expecting the call order of these two method invocations to be independent of each other.