Change default ui color in android app

[Korbi-code]

Hello,

I'm looking for a solution to change the default color for android.

When the app is open the "formal_name" provided by the pyproject.toml file is written on a green background.
Is it possible to change this color ?

Thanks in advance

[freakboy3742]

This isn't currently configurable in a programmatic way; however, it is something we definitely want to make customizable.

In the short term, if you want to modify this, you will need to modify the color values in the app/src/main/res/values/colors.xml file that is generated by Briefcase for your Android project. These values will be overwritten every time you regenerate the project; so if you want a specific set of values to be applied consistently, you may need to clone the template (https://github.com/beeware/briefcase-android-gradle-template), make the change in your copy, and modify pyproject.toml to point at that template.

If you look at the existing template, you'll also see that the background splash color is already templated and customizable; adding analogous "primary_color", "primary_color_dark" and "accent_color" options to the template, and exposing those options in Briefcase would be a welcome contribution.

[ikus060]

Thanks @rmartin16 for you help.

I've quickly go trough the documentation, but I fail to understand where I should define values for base_theme, accent_color, primary_color, etc. I'm guessing it need to be define in pyproject.yml but I'm not sure.

[rmartin16]

Yep; add them under the android section for the app in pyproject.toml.

[ikus060]

Thanks @rmartin16 It's working indeed.

Could I make contribution to the documentation for this kind of little quirk ? I think it might help other people.

[rmartin16]

Absolutely; all contributions are welcome.

[freakboy3742]

@ikus060 Something to keep in mind if/when you draft that documentation is that we need to make a distinction between Briefcase and Toga configuration. Toga's docs shouldn't assume that the project will be deployed with Briefcase - it's definitely a reasonable assumption, but it shouldn't be an assumed default.