Add monochrome icon

[Biswa96]

Fixes #114

[Biswa96]

The new monochrome icon is based on previous colored icon created by @Donnnno . I have just traced it in Inkscape and followed the steps from official documentation https://developer.android.com/develop/ui/views/launch/icon_design_adaptive

[tmo1]

Thank you!

I tested this on an AVD (Pixel 7, Android 34), and I found that the system still displayed the regular color icon, and not the new monochrome one, until I added the <monochrome android:drawable="@drawable/ic_launcher_monochrome"/> line to app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml in addition to app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml. Please verify and fix as appropriate.

[Biswa96]

Yeah, you are right. I missed the round icon. Though round icon is not required for this kind of normal drawing. Round icon is used "only if you require a different icon asset for circular masks—for example, if your branding relies on a circular shape."¹

Footnotes

1. https://developer.android.com/develop/ui/views/launch/icon_design_adaptive ↩

[tmo1]

Yeah, you are right. I missed the round icon. Though round icon is not required for this kind of normal drawing. Round icon is used "only if you require a different icon asset for circular masks—for example, if your branding relies on a circular shape."

Yes, I saw that. The round icon may not be required in our case, and I'm not sure why @Donnnno added it, but I guess that once it's there, it needs to have the monochrome tag included.

[Donnnno]

I have no idea anymore either!

[tmo1]

Thank you! Merged, and credited in CONTRIBUTING.md