Fix systemUiVisibility deprecations in ThemeManager

[Amejia481]

Deprecation docs:
https://developer.android.com/reference/android/view/View#getSystemUiVisibility()
https://developer.android.com/reference/android/view/View#SYSTEM_UI_FLAG_LIGHT_NAVIGATION_BAR
https://developer.android.com/reference/android/view/View#SYSTEM_UI_FLAG_LIGHT_STATUS_BAR

fenix/app/src/main/java/org/mozilla/fenix/theme/ThemeManager.kt

Line 81 in f4a7b4c

window.decorView.systemUiVisibility or SYSTEM_UI_FLAG_LIGHT_STATUS_BAR

fenix/app/src/main/java/org/mozilla/fenix/theme/ThemeManager.kt

Line 88 in f4a7b4c

window.decorView.systemUiVisibility =

fenix/app/src/main/java/org/mozilla/fenix/theme/ThemeManager.kt

Line 96 in f4a7b4c

window.decorView.systemUiVisibility = window.decorView.systemUiVisibility and

fenix/app/src/main/java/org/mozilla/fenix/theme/ThemeManager.kt

Line 102 in f4a7b4c

window.decorView.systemUiVisibility = window.decorView.systemUiVisibility and

Similar mozilla-mobile/android-components#9554

┆Issue is synchronized with this Jira Task

[CharlesAdam]

Can you please assign me to this issue?

[Amejia481]

Sure!

[CharlesAdam]

I'm trying to update the compileSdkVersion so I can use the new features to solve this issue since they are only available at API 30 however some errors are appearing whenever the projects try to build as in this screenshot:

[CharlesAdam]

@Amejia481 It seems some methods are not being overridden because now activities cannot be null as in this link: https://developer.android.com/reference/android/app/Application.ActivityLifecycleCallbacks#onActivityCreated(android.app.Activity,%20android.os.Bundle)
So we just need to remove the safe calls so the app can be built, however, should this be another issue?

[cadeyrn]

should this be another issue?

There is already a PR: #17809

[CharlesAdam]

@cadeyrn thanks for the info, I will generate the branch from this PR 😃

[Amejia481]

Thank you @cadeyrn and CharlesAdam, we are doing some round of tests to find any possible issue before land it.

[mcarare]

@CharlesAdam are you still working on this?

[CharlesAdam]

@mcarare Yes, I sent a PR back then but it shouldn't be merged before the base branch, I'll update and set it up for the merge

[mcarare]

This is still waiting on a stable version for https://developer.android.com/jetpack/androidx/releases/core 1.5.0 (it has reached the RC stage).

[wbillan]

1.5.0 stable was released May 18

[mcarare]

@CharlesAdam Do you want to continue working on this?

[mcarare]

Closed in #20220.