Optimize, bug fix, or test your android app

Description

I'm experienced with Java and Kotlin languages for android apps programming, some of the common issues this app can be useful for :

Adding or improving :

RecyclerView implementationNavigation graphDependencies updateApp security and progaurd settingsApp compatibility with newer or older versions of androidDatabase : SQLite, Room, FirebaseUser Authentication - including social media loginSplash ScreenFragments and BackstackViewModels and LiveDataApp Size and performanceRetrofit for API callsXml Layouts, Constraint Layout

Fixing or debugging:

NullpointerExceptionsGradle updatesApp crashesAndroid Permissions

Please contact me before you buy the gig. It's always good to discuss all the details before starting a project.