fix(Android): show blank icon if no adaptive icon set

[chungxon]

Fixes #578, #579, #585, #589, #594, #595, #600

In the new version 0.14.1, not everyone specified adaptive_icon_background and adaptive_icon_foreground or adaptive_icon_monochrome in their Android configuration, so the app icon may be black/blank after generating.

As suggested by #579 (comment), you can delete the android/app/src/main/res/mipmap-anydpi-v26/${androidIconName}.xml file after running generating to solve this issue.

However, it will still always create this file. I think this file should only be created if any configuration related to adaptive icons is set up.

[mw108]

Can confirm it works. Specifying adaptive_icon_background and adaptive_icon_foreground in either the pubspec.yaml or flutter_launcher_icons.yaml and regenerating the launcher icons via dart run flutter_launcher_icons solves the problem.

[xShuusui]

Would also fix #613 #611

[OutdatedGuy]

LGTM!

However, I'm not a maintainer. @MarkOSullivan94 can you have a look?

[jkoenig134]

This is an important fix, I have to delete the falsely generated file every time I want to re-generate my icons. @MarkOSullivan94 could you have a look?

[MarkOSullivan94]

Thank you for this fix @chungxon

Thank you @jkoenig134 for pinging me to get this merged

I'll get another release shipped shortly with this in it and hopefully this will help you @jkoenig134

[MarkOSullivan94]

LGTM

[jkoenig134]

@MarkOSullivan94 thank you! This will close so many issues here 🎉

[MarkOSullivan94]

@jkoenig134 published v0.14.3 - should be available in the next 10 minutes or so

[MarkOSullivan94]

Thanks everyone for bringing the issues to my attention which this PR fixes, if I've missed any please reply and let me know which ones