Here the link given below for roadmap for android devlopment :

medium.com/mindorks/a-roadmap-to-b...

for ios developer

github.com/BohdanOrlov/iOS-Develop...

medium.com/ios-os-x-development/io...

for web developer

medium.freecodecamp.org/what-i-lea...

hope these links will help you.

Here latest the link given below for roadmap for android devlopment..

redblink.com/android-mobile-app-de...

I just want to thank the Android dev community all over the world that helped us with some great insights..

github.com/mobile-roadmap/android-...

Thanks,
Alana