115: Architecture Components with Akshay Chordiya

In this episode, we talk about the different parts of Android architecture components. We've had episodes on Room and the paging library, so in this one, we thought we'll touch a little on Lifecycle Owners & Observers, ViewModels, and LiveData. Akshay Chordiya helps break it down. Listen on!

Show Notes

• Android Architecture Components

Lifecycle

• Handling lifecycles with Lifecycle-Aware Components
• Lifecycle Owner
• Lifecycle Observer
• Best practices for lifecycle-aware components
• Caveat: handling onStop events

ViewModels

• Architecture Guide: ViewModels
• View Model

Code snippet for a ViewModelFactory:

class UserVMFactory( val user: MyUser ) : ViewModelProvider.Factory { override fun create(modelClass: Class): T { return when { modelClass.isAssignableFrom(UserVM::class.java) -> UserVM(user) as T else -> throw IllegalArgumentException("Unknown ViewModel class") } } } LiveData

• Live Data
• MediatorLiveData

Misc

• Android Architecture Components Deep Dive Course on Caster.IO
• Fragmented - Room episode with Florina
• Fragmented - AAC Paging library with Florina

Sponsors

• Microsoft AppCenter - Sign up now on appcenter.ms and spend less time managing your app lifecycle and more time coding.

Contact

• @Akshay_Chordiya [twitter.com]
• @fragmentedcast [twitter.com]
• @donnfelker and 📷 donnfelker
• @kaushikgopal and 📷 kaushikgopal