Hi, do you have an example of customised spinner in kotlin (androidx)? I tried so many examples with no success…I need spinner with border and arrow

can we @Parcelize

sealed class

and pass it using safeArgs or Bundle ??

Why am I getting this error in android studio dsl file?

Unresolved reference: getKotlinPluginVersion

Hey 😄  I've created a small test for a product and would appreciate any feedback on it! Long story short: If you subscribe, each day, for the next 3 days, you will get a small, but interesting RxJava2 Puzzler (written in Kotlin) with a detailed explanation. You will either learn something new, or confirm your knowledge. https://mailchi.mp/631bd69d4410/smallengineer-rxjava2puzzlers-free After three days, there is a small survey just so I can gather feedback. Thanks, and tell me what you think!

Hello everyone, I have a question regarding Library Modularization. I am working on an Android Library Project where I am trying to split the main library into multiple modules( core, registration/login modules, and other library modules) and then adding the multi module library as one to receiving apps. I read that there are limitations in adopting this approach, can anyone suggest how this can be best achieved? Thank you.

Hello everyone I have been trying Kotlinx Serialization in an android project of mine. Is this issue quite common or what? I have a List of String as an object inside my data class. But when I try to parse it, I get stringified array. Following is the data class of my api

@Serializable
data class ApiError(
  @SerialName("error") val error: Error
)

@Serializable
data class Error(
  @SerialName("code") val code: Int,
  @SerialName("timestamp") val timestamp: String,
  @SerialName("path") val path: String,
  @SerialName("method") val method: String,
  @SerialName("message") val message: List<String>
)

And this is the parsing logic:

private fun ResponseBody?.toApiError(): ApiException {
  return ApiException(
    Json(
      JsonConfiguration(
        ignoreUnknownKeys = true,
        isLenient = true
      )
    ).parse(
      ApiError.serializer(), this?.charStream()
      ?.readText()
      .orEmpty()
    )
  )
}

But when I print the key

message

all I get is

"[User not found.]"

Am I missing here something ? I am using this dependency

com.jakewharton.retrofit:retrofit2-kotlinx-serialization-converter:0.5.0

Hello, please help. Where can there be a mistake ? AS 4.0.1 Thanks

Is the

liveData

coroutine builder suited for retrying/refreshing data loads or does everyone typically avoid it when you need that functionality? I’ve started using it recently to lazily load data when needed by the UI, but i cant come up with a clean way of using

liveData

while also being able to refresh the data (i.e. when coming back to the screen) or retry failed operations. Typically my ViewModels look something like:

val data: LiveData<State<MyData>> = liveData {
    emit(Loading)
    try {
        emit(getData())
    catch (e: SomeEx) {
        emit(Error(e))
    }
}
suspend fun getData(): MyData {...}

But with this i have no way of actually retrying the operation and emitting to the LiveData again if it fails. And in the cases i need to update the data on user events like a refresh button or returning to the screen I’m stuck with the stale data.

Dumb question - but what’s the equivalent of iCloud on Android? Is there a way for a user to have app data sync across multiple devices? If so, is it via an account that you can expect all/most users to have nowadays? (edited)

I am logging out a user and shows the login screen. While logging out I want to clear all the data from room db. Logout is working fine but database is not getting cleared. I think the issue is occuring because the db clear function is getting called from viewmodel and viewmodel lifecycle get destroyed after moving to login screen. So how can I handle this issue ? Or what is best way to handle logout flow ?

I am using Kotlinx serializer for serializing/deserializing of data classes with retrofit. I need to skip the null values from serialization, but I couldn’t find the way to do that here is my data class

@Serializable
data class Attributes(
    val home: String? = null,
    val room: String? = null,
    val announcement: Int? = null,
    val push_notification_enabled: Int? = null
)

when I called Attributes().serialize() , the resulting json as below

"attributes":{
      "home":null,
      "room":"null",
      "announcement":null,
      "push_notification_enabled":null
   }

what is expected is

"attributes":{}

Note: serialize() is an extension function as below

inline fun <reified T: Any> T.serialize(): String {
    return Json.stringify(T::class.serializer(), this)
}

Basically I want to exclude all null params from serialization. I tried with by setting

JsonConfiguration( encodeDefaults = false)

, but still resulting json includes

null

fields from data class. Anyone has idea of how to do that

Hi everyone! I’m having some issues figuring out how to use a

Fragment

implementation both in the “normal” way (embedding it in an activity for instance) and also be able to display it as a modal. I know it’s pretty easy with a

DialogFragment

implementation to display it as a modal, but I wanted to know if it’s possible to also display a

Fragment

as a modal, or maybe wrap it in a

DialogFragment

?

Hey everyone I'm working on a kotlin, firebase android chat app. Anyone have any tips on adding attachment functionality like posting an image to a chat conversation and having it displayed to both parties? I already have real time messaging working, I can't figure out file attachment sharing at all and I've looked online for guides but to no avail. If anyone can point me a good direction thank you! If not then that's fine thanks for reading this!

Anyone tried sign up with facebook function? I can only see login with facebook from their documents.

hello, how does android decide if it has access to internet when you connect to wifi? i want to trick it that it has the connection, otherwise Downloadmanager doesnot download files on my VPN :(

I am using

WorkManager

with constraint

Network.Connected

but it only check if device is connected to wifi or any mobile data, it won't check if there is internet connection is present or not. So is there any way to add internet connection constraint ?

Hi everyone! I realised that I can’t use

@Parcelize

on a nested data class. Why this restriction is present?

package com.test_parcelize
import com.test_parcelize.TestNestedParcelize.*
interface TestI<T : Any>
class TestNestedParcelize : TestI<State> {
    @Parcelize
    data class State(
            val isLoading: Boolean = false
    )
}

In this example `@Parcelize`doesn’t work. I can’t import it, the code analyser breaks. if I replace 

TestNestedParcelize.*

 to 

TestNestedParcelize.State

  everything works. Looks like a bug in the kotlin plugin.

Hi. With regard to gradle files, what does ext.something mean in buildscript{}? Why not define just def something inside the buildscript{}?

This message was deleted.

What is the difference between

MergeAdapter

and the

ConcatAdapter

(which is a new class available in 

recyclerview:1.2.0-alpha02

) ?

Any ideas why this link does not work? It is supposed to open up a web-browser?'

<TextView
            android:id="@+id/textView6"
            android:layout_width="273dp"
            android:layout_height="45dp"
            android:layout_marginStart="32dp"
            android:layout_marginTop="24dp"
            android:layout_marginEnd="32dp"
            android:autoLink="web"
            android:fontFamily="@font/avenir_next_regular"
            android:text="@string/terms_and_conditions"
            android:textAlignment="center"
            android:textSize="14sp"
            android:textStyle="bold"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="@+id/linearLayout3" />

<string name="terms_and_conditions">By tapping Sign in, you agree to our <a href="<http://www.google.com>" target="_top">Terms</a>. Learn how we process your data in our Privacy Policy and Cookies Policy.</string>

hi guys! im brand new, i am learning development/kotlin. quick question. i have a button that should lead to a new page. does that mean i should create a new layout or a brand new activity?

Given the cost of using enums (vs IntDef), but not wanting to give up on the convenience they add - I was thinking it should be possible to have the compiler (or a build plugin) do the conversion for us (at least for “simple” enums with no methods/inheritance etc), so that we can get the best of both worlds. Does something like this already exist?

I have a multi module project configured to work with Dagger. I came across a use case, where I need the same component need to be shared with all the activities in the same module. How can I create a shared component without putting it inside the application class

Hey folks, how are you doing? I'd like to know if it's ok to execute a SharedPreferences task inside a Coroutine. I'm just dealing with primitive types so it's just out of curiosity

This is the approach I usually follow when using firestore. Is there any better approach to implement MVVM architecture when our primary database is Firestore? My main decision was using a single repository object for any firestore related tasks. The viewmodel can then use it just like it uses any other data repository. “Android MVVM pattern with Firebase Firestore” by Yashovardhan Dhanania https://medium.com/@yashovardhan99/android-mvvm-firestore-37c3a8d65404

Hi everyone! I'm trying to use the build analyzer in Android Studio 4.0.1 I followed the instructions on this page https://developer.android.com/studio/build/build-analyzer but Build Analyzer tab doesn't show up. Has anyone experienced a similar problem?

HI, does anyone know how to show properly a list inside an item that is part of a RecyclerView?