Android 13 (Material Design 3) app icon

[legofahrrad]

Use case
App icons on Android 13 can adapt their colour to the background image of the home screen, which looks really cool :)

Proposed Solution
Make the SC icon also adaptable, this instruction might be useful: https://developer.android.com/develop/ui/views/launch/icon_design_adaptive

#3650 may be related, though this issue is just about the app icon and not the style in the app itself.

Screenshot

(just poorly edited with gimp)

[westnordost]

It is already adaptive (separate foreground and background).

[FloEdelmann]

But there is no monochrome layer:

StreetComplete/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml

Lines 1 to 5 in 70cfe52

	<?xml version="1.0" encoding="utf-8"?>
	<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
	<background android:drawable="@color/ic_launcher_background"/>
	<foreground android:drawable="@drawable/ic_launcher_foreground"/>
	</adaptive-icon>

[FloEdelmann]

See https://developer.android.com/develop/ui/views/launch/icon_design_adaptive#design-adaptive-icons:

If you want to opt-in to supporting user theming of app icons, provide a single layer for the monochrome version of the icon.

and https://developer.android.com/develop/ui/views/launch/icon_design_adaptive#add_your_adaptive_icon_to_your_app (emphasis mine):

You can then use the <adaptive-icon> element to define the foreground, background, and monochromatic layer drawables for your icons. The <foreground>, <background>, and <monochrome> inner elements all support the android:drawable attribute.

[westnordost]

ic