How come that upper-left button in the toolbar (default) navigates me back properly to the previous fragment but the upper right button (my implemented button) which is called via

navController.navigate(R.id.action_global_goOnlineFragment)

takes me to an empty fragment? All other fragments will also be displayed as empty... the only thing that loads properly is the toolbar. Please help me I have been scrathing my head for too long

What is a deeplink URI for another module? I am trying to deeplink 2 fragments together from different modules and connect them via deeplinks (as I cannot find any other way) and Idk how to structure the URI's. (here is the more detailed question on stackoverflow, ive went through 4,5 projects now and a couple of articles but they're horrible for getting started) This is the example from the article

<deepLink app:uri="myApp://fragmentD"/>

What does myApp represent, and how is it structured? By directories, or modules?

I am trying to make a kotlin library for android for the first time, and I have what seems like a dumb question: Do i always have to add the dependencies from my library module into the gradle file of the app I'm importing the library into? Example. In my module I am using Ktor to fetch a file. I import the module into an a different android application but the application wont build without also adding Ktor its Gradle file. Is there a way to ensure the these dependencies are automatically included with the module?

Im trying to test a ViewModel that lazily loads data when the LiveData is accessed and first emits a Loading state, the loads the data, then emits a Data state with the result. The data is loaded in a coroutine on the viewModelScope and I’m using TestCoroutineScope and MockK in my test but for some reason my mock observer doesn’t get the loading emission unless I pause the dispatcher then resume it. Here’s a basic example of my issue

// The view model 
class LazyViewModel(val repo: Repo) : ViewModel() {
    val state: LiveData<State<String>> by lazy {
        loadData()
        _state
    }

    private val _state = MutableLiveData<State<String>>()
    private fun loadData() {
        viewModelScope.launch {
            _state.value = State.Loading
            _state.value = State.Data(repo.getData())
        }
    }
}
// the test
    @Test
    fun `get loading then data`() = coroutinesTestRule.testScope.runBlockingTest {
        val mockObserver: Observer<State<String>> = mockk(relaxUnitFun = true)

        val mockRepo: Repo = mockk {
            coEvery { getData() } returns "data"
        }
        val viewModel = LazyViewModel(mockRepo)
        // If I don't pause then resume the dispatcher _state.value = State.Loading seemingly gets skipped
        pauseDispatcher()
        viewModel.state.observeForever(mockObserver)
        resumeDispatcher()
        verifyOrder {
            mockObserver.onChanged(State.Loading)
            mockObserver.onChanged(State.Data("data"))
        }
    }

Good Afternoon.. ladies and gentlemen... Please i've been struggling on how to increase the padding of an Android Chip, all efforts have failed... The Chip is create programmatically.

val chip = Chip(mContext).apply {
                setPadding(130)
                setTextAppearance(R.style.ChipTextStyle_ProductList)
                isCheckedIconVisible = true
                setTextColor(ContextCompat.getColorStateList(mContext, R.color.chip_state_list_bg))
                chipBackgroundColor = ContextCompat.getColorStateList(mContext, R.color.chip_bg_state_list)
                isCloseIconVisible = true
                text = item.name
            }

Hi guys can someone help me, I have been trying to load an image from a url without an extension and haven't had any success. this is what I have: val url ="https://unsplash.com/photos/D8LcRLwZyPs"

Picasso.get()
    .load(url)
    .fit()
    .centerCrop()
    .into(imageView)

but this does not work

I’m excited to announce that my open-source sample project about

Android Modular Architecture

just reach 1K ⭐️ on

Github

. Maybe sounds insignificant if you compare with video reproductions or a post likes on twitter. But isn’t, the project is among top 10 github projects in Kotlin related with Android Architecture Sample with several mentions/references like

Android Weekly

,

AndroidSweets

,

Droidcon

and

KotlinBy

. I want to say thank you ❤️ in this way for all the support received by the

android/kotlin developer community

and I hope that some of the architecture decisions taken help you to apply/inspire to your current or next project. Of course, nothing is perfect and this project isn’t an exception, there are a lot of things to improve, but the iteration is the key to my point of view. Project Link: https://github.com/VMadalin/android-modular-architecture

Hi, I'm looking for the kotlin equivalent of

Map<Class<? extends AbstractCode>

I tried

Class<? : AbstractCode>

and

Class<Any : AbstractCode>

.Can someone help me please?

This message was deleted.

Hey guys, can anyone advise a library for building android ui using dsl? From the requirements: at least a 1000 stars on the github and the last commit no later than a year ago.

Hi There, I am working with an exoplayer in a grid and it is consuming too much memory. Can anybody provide me any guidance on how to manage exoplayer in a grid? Thanks!

Hi, I have following class

open class XModemPacket(protected var bytes: ByteArray = ByteArray(133))

Can someone give me a hint, how I can have the getter public. I want that every sub class can set it and can be obtained from outside.

Hi Everyone! I'm currently investigating Jetpack compose and how it might work for our project going forward, but we are heavy users of Dagger in the current world of Android. One project I've been looking around in is the JetNews app, and there is no use of Dagger or Hilt. Any idea how Dagger/Hilt will play with Compose? I'd imagine composables would end up being injectable, just like fragments and activities are right now.

Hey guys what approach would you use to have something like this? (Multiple horizontal recviews, and other stuff underneath it etc..) I dont think nested scroll view works for this nor mergeAdapter. Just a general direction to look into is appreciated. I am aware SO is more fitting as this isnt specific to kotlin, but I dont have a concrete problem nor a question, so Id probably get shamed or ignored there.

Hello, how can i center a Toolbar text without using TextView tag inside the Toolbar?

Hey Guys, I received NullPointerException in logs even after putting a check for 'null'. Can anyone tell me how and when can I get NullPointerException for checking "isPreview" in the below statement...

if (lastWallpaperEngine != null && !lastWallpaperEngine!!.isPreview) {
}

Logs received in play-store...

java.lang.NullPointerException: 

  at android.service.wallpaper.WallpaperService$Engine.isPreview (WallpaperService.java:390)

  at VideoWallpaperEngine.onSurfaceDestroyed (VideoWallpaperService.java:158)

CPU utilization is going 200% and above when I am working with Android Studio, How can over come this ?

How I could achieve something like this in edittext? add like an indicator to hint about the typed text

For Folks using ViewBinding -- I have a question, I am not sure if this is a bug. We have been using ViewBinding and so far it looks good, however, for a scenario where I wanted to include layouts that reside in a different library(AAR) in my app's current layout, unfortunately my binding variable has no visibility of the views that are available within the included layout, is this a known issue or is there any other way?

What do you think, to what extent is it permissible to load dataBinding with logic? for example, if I need to process a click on a button, should I create a separate interface for this event, or is it permissible to directly call viewModel methods to handle this event? for example, if all the presentation logic is one single click, would it not be unnecessary to create a separate interface for this?

Can i get a tutorial that specifically points to the MVP/MVVM in android development, necessary details on the structure ( packages/ modules ) in android studio, a short reference??

Afternoon... I have a

RecyclerView

that uses a

PagedListAdapter

which fetches data from

ROOM

and Network API. It uses a

BoundaryCallback

to make request to the API of which the data returned is inserted into the Database(ROOM) i have a list item that has an increment and decrement button... I have attached an image of the list... The current list is filterable, e.g i can filter the list of products by category Problem If i increase a product item quantity using the increment button, to e.g 12 and then i try to add more to filter the list by, the current list doesn't refresh which is fine because the

DiffUtil.ItemCallback

confirms that the items are the same, but once i try to increment that same product's quantity after filtering by more category, it starts from zero again.... So i'm not really sure what the problem really is: below is the code that does the increment and decrement.

override fun onIncrementQuantity(position: Int, item: ProductEntity) {
    item.quantity = item.quantity + 1
    selectedProducts[item.item.id!!] = item
    productAdapter?.notifyItemChanged(position, item)
}

override fun onDecrementQuantity(position: Int, item: ProductEntity) {
    item.quantity = if (item.quantity == 0) 0 else item.quantity - 1
    if (item.quantity == 0) {
        selectedProducts.remove(item.item.id)
    } else {
        selectedProducts[item.item.id!!] = item
    }
    productAdapter?.notifyItemChanged(position, item)
}

Does anyone know if there have been studies regarding the build speed of a project on kts vs groovy?

anyone know of any good books or courses on the android operating system itself not developing apps?

Hey guys, junior here

Car

is a class, which extends an abstract class

Vehicle

I didn't write a constructor for

Vehicle

. why the compiler complains?

This message was deleted.

Hi. I want to write an extension in buildSrc, something like this: fun List <String> .kapt () {this.forEatch {kapt (it)}}, but in buildSrc there is no visibility on the kapt method. can I somehow connect kotlin-kapt here, or will I call this method in another way?

I just found out about the existence of Jetpack Compose. Is this technology already widely used? Should you think about switching to it?