Hi, everyone! I need to create a UI wiget that will hold an observable reference to a small portion of my state and display it with a custom layout. This wiget may be used inside an Activity or a ResycleView. In modern Android, can I do it? I've tried a view, but it doesn't support lifecycle on its own. I've tried a fragment, but it seems to be unusable from a ResycleView

Hello guys please how can I pass a nested request using retrofit

like say for some reason I'm returning LiveData<List<String>> from my data source and I want to emit different values depend in which state my data is how would I handle it from view's and viewModel's part?

Hi, I currently follow the new course "Android Kotlin Fundamentals", I'm at the chapter 05.2: LiveData and LiveData observers, and i have a question about this chunk of code:

score.value = (score.value)?.minus(1)

why the parentheses ? isn't the exact same thing that:

score.value = score.value?.minus(1)

(score isn't nullable)

Is it better to do this:

context.getSystemService(VIBRATOR_SERVICE) as Vibrator

or

context.getSystemService(VIBRATOR_SERVICE) as? Vibrator

Morning (from Denmark) guys. Quick question regarding "best practices". Would you add your business logic to an activity rather than a fragment? I'm talking specifically about making an HTTP request to fetch data, which are displayed in only 1 fragment. (List of students). Other two fragments don't use these data, but will perform different HTTP requests in the future. Therefore, in my opinion it would make sense to separate this logic between fragments instead of keeping everything in the MainActivity. I'll be happy to hear your opinions. Cheers.

Hello guy i have this issues when add a class to my room model I can't insert data to that class for example. @Entity Data class AuthResponse( val token:String val refreshtoken:String val user:User ) data class User( firstname:String lastname: String )

Hey guys, I am having trouble with Dagger2 DI my fragments. I'm trying to use the googles dagger2 mvvm architecture as a reference but it's not working. The solutions I found online are deprecated or i am uncertain how to use them. I am still learning DI and dagger so it's not perfect Here's the error and the fragment that's causing it: https://hastebin.com/ipudoharef.m Here's my DI: https://github.com/Nikola-Milovic/QuoteAppMvvm/tree/master/app/src/main/java/com/example/quoteappmvvm/di

Hey guys, I need your help. The application which I’m working on contains many RecyclerViews, and each of the RecyclerViews can contain many types of items, 10+ on average. I joined my current team earlier on, and I felt very painful to maintain the huge bunch of viewtypes and binding logic during this time. So I wrote a library recently, trying to make this kind of situation a little bit easier. I hope you guys can help me review this library and give me some suggestions about API design, naming and etc. Thanks. And this is my library: https://github.com/fengdai/registry

Article to know the internals of

LiveData

and how it works. 👏 https://medium.com/androidiots/how-i-made-my-own-livedata-1faf4a45520

What’s the difference between creating a property with a getter function vs one without. Are these 2 actually the same thing?

val myLiveData: LiveData<String> = _backingLiveData

val myLiveData2: LiveData<String> 
      get() = _backingLiveData

Fast Question. How I can prevent proguard to obfuscate an object name? Im trying it with

-keep class qualifiedClassname

but it never works

Hey Guys, I am trying to write

Espresso

unit tests on Android. Does this gradle flag even work?

testOptions {
        animationsDisabled = true
    }

More of a better practice question, I have a fragment with a viewpager inside which items are also fragments. Depending on the even in a child fragment inside a viewpager I need to notify the parent fragment (the one that contains viewpager). I see a couple of ways like passing a function to the fragment constructor , using an interface and casting the context to it inside the child fragment. What other (possibly better ways) do you all see for this use case?

how do we show progress indicators in 2019? like the spinning circle

Hi everyone, I have just released a new library for generating RecyclerView adapters using annotations. If you hate writing your adapter over and over just have a look at it and tell me what's your opinion: https://github.com/PsHegger/recycleradapter-generator

How can I set a function to be used in a custom control? I can expose and bind to properties like strings, ints, etc, but how can I do the same for a function?

help me please how correctly i should get ontextchanged text to viewmodel to insert to Room DB? by not destroying MVVM architecture

Compiling an Android app fails with Java11. Only Java8 is supported, right?

Can android do something like this in the global text selection scope?

Am I right in thinking that Kotlin already supports all new language features introduced in Java 9, 10, 11 and 12, and that supporting those newer Java versions in Android does not add anything for Kotlin Developers ?

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Anyone have a Kotlin function that can take any object no matter how many nested objects it has and turn it into a Retrofit Multipart body?

Hi everyone i cant add viewmodel class func execution to @ navigate up button on app bar plz tell how can i do that?

Hi, quick question it's possible to use by lazy with a suspend function

And one more quistion in edit mode(copy/cut/selection) when im selecting text bottom toolbar hides how can i fix it?

Setting up UI unit testing in Android is pain. I recently had this experience and wrote this article which tries to consolidate all pain points/gotchas at single place. https://link.medium.com/VtccFcwWu1

tried LiveData+Coroutine but the issue is when click a button need to call the Api ,first time working fine, second time request is not sending. Transformation is required here?

I have troubles with data binding when i'm using kotlin library 1.3.21 < higher