After searching about android architecture components I realized that MVVM is better than other architectures at some points so I started to learn MVVM and I'm using Kotlin language but the problem is when I search for tutorials to start learning I found many components like RxJava, RxAndroid, Dagger2, Room, Lifecycle and etc. but they don't say why they are using them and why they choose some specific components. i will show you some examples :
1- Android MVVM with Dagger2, Retrofit, RxJava
2- Android MVVM with Dagger2, Retrofit, RxAndroid
3- Android app with MVVM dagger2 RxJava Livedata and Room
My questions are :
1- How should I decide to choose some of these components and work with them?
2- How should I know that I need to use some of them together(for example Livedata and RxJava)?
This is really confusing for me and I don't know how to start.
First you need to individually understand why to use Kotlin, MVVM, Dagger, RxJava, Retrofit.
MVVM and Kotlin:
https://medium.com/@zhangqichuan/android-development-with-mvvm-and-kotlin-9598c3623ce1
RxJava and RxAndroid:
RxAndroid is an extension to RxJava(Used for handling threads and asynchronous tasks), for more details check following links: Difference between RxJava and RxAndroid? https://www.quora.com/What-is-the-difference-between-Retrofit-and-RxJava-RxAndroid
Retrofit:
https://medium.com/@elye.project/kotlin-and-retrofit-2-tutorial-with-working-codes-333a4422a890
LiveData and room with kotlin:
Room is a database layer on top of an SQLite database which used to remove boilter plate while fetching data from local sqlite database, use following links: https://codelabs.developers.google.com/codelabs/android-room-with-a-view-kotlin/#0
After understanding this components(Kotlin, MVVM, Dagger, RxJava and RxAndroid, Retrofit, LiveData) individually then you need to do all this things in single project, use following link:
As a jr. android developer, i was thinking like you but i choose a route like :
(If you want you can see how to mix them. Koin will be added soon. https://github.com/furkanaskin/CoinStalker)
Future?
Dagger 2, maybe Rxjava etc..
If you know the Core Android basics and has done at least 1 or 2 projects then you can jump to this, https://android.jlelse.eu/why-to-choose-mvvm-over-mvp-android-architecture-33c0f2de5516