Hi Everyone is it possible to change build flavour run time

Question

Hi Everyone is it possible to change build flavour run time I wanted to use common build for all environment and select flavour from menu based on selection data will be updated which is available on each flavours like strings drawable etc Currently we are maintaining separate builds for DEV SIT UAT but want to keep single build and QA can select flavours based on their requirement for testing Any thought process on this Thanks

gildor · Answer

Flavours is just a way to separate different sources during compilation so if you want to change on runtime you should remove flavours completely and use runtime check so you have some kind config and selecting all resources code etc depending on this config

Mahesh Kavathiya · Answer

Thanks Andrey for the reply Yes I know this way we can achieve it but do you know run time possible

Francesc · Answer

You can t change flavors at runtime because flavors are a compile time feature The closest alternative I can think of would be on demand modules

Mahesh Kavathiya · Answer

Thank you < Francesc> for quick reply will check with modules

gildor · Answer

gt but do you know run time possible Yes just include code resources from all you flavors to a single flavor and select required on runtime

gildor · Answer

On Demand Modules could be very tricky you need very good separation between parts of the app and what is worse you need Google Play to even test it so at least upload it to internal app sharing so I don t really think that it worth to look into only for testing My personal advice do not bother with it publish all available flavours of the app to your app distribution services so QA can install them side by side and test It a lot closer to what actually and less chance of mistake and many possible side effects of dynamic selection Of course it really depends how different your different flavours if it just let s say about API endpoints it s easy to do and you don t really need flavours for this

Mahesh Kavathiya · Answer

Got it Thanks < gildor> Well it s not just for API endpoints there are many other resources to be handle based on flavour Currently we already have published all flavour in app distribution

gildor · Answer

if you have many resources I wouldn t bother with runtime selection in any way because you will not only make your code more complex which you don t want to do if it s not a product requirement but just for testing but also will fight with resource caching you should never cache resources or even ids anywhere outside of activity force recreate activity

MR3Y · Answer

I m not sure if this solves your problem but have you tried <https github com JakeWharton ProcessPhoenix|https github com JakeWharton ProcessPhoenix> it allows for switching between different environments at runtime

gildor · Answer

It doesn t allow to switch it just allows to restart process

MR3Y · Answer

Oh TIL I thought it would help him but as I said above wasn t sure about that