This message was deleted.

Hey guys, Are normal function calls in suspend function, sequential? For Example; in the snippet below, will the liveData post empty list or wait for the suspend call to finish and post that list?

var dataList = emptyList()
fun suspend fetchData(){
    dataList = repository.getData() //another suspend function
                         .map{/* some mapping logic */}
    liveData.postValue(dataList)
}

I have this scenario and an empty list is being printed.

A few years ago, Kotlin reached the #2 spot for most loved language on SO survey. Why is Kotlin so far down this year?

I just updated multiple things in my project like AGP & Kotlin version and now I am getting this error on build:

org.jetbrains.kotlin.backend.common.BackendException: Backend Internal error: Exception during file facade code generation
File being compiled: <file://D>:/........../FirebaseMessagingService.kt
The root cause java.lang.AssertionError was thrown at: org.jetbrains.kotlin.com.intellij.openapi.diagnostic.DefaultLogger.error(DefaultLogger.java:53)

What is this error?

If arguments of a function in Java are annotated with neither

@Nullable

nor

@NotNull

, what is it considered in Kotlin. Normally it would be allowed to pass nullable arguments but I have updated Kotlin version and now it is taking them as non-nullable arguments and throwing error. Did this change?

Hello all, Any one have used GraphQL with Android?

Hey I am working to create a list of type INCOMING, OUTGOING and TIME through enum class. My data class is populated through api call and filled according to that in the list. I want to modify to add TIME enum value whenever date ends the current one.

Hey folks, trying to understand if there could be a possible memory leakage in this case. I have created a SingletonClass with private members, one of the private member is another class which then holds reference of repositories etc. So now since, there is a singleton instance of my class, which further has strong reference to other member classes, can there be any scare of

memory leakage

?

I'm trying to migrate my project to the new activity result API. I have a

PermissionUtils

that takes care of checking/requesting permissions:

object PermissionUtils {
    fun checkPermissions(context: Context, permissions: List<String>, listener: PermissionListener) {
        // uses a library that checks for permissions and calls listener.onPermissionsGranted() or listener.onPermissionsDenied()
    }
}

Now, to use the new activity result API, I'd have to register the contracts in each activity, which doesn't sound good because I have many activities and all of them would look like this:

class MyActivity : AppCompatActivity {
    val imageFromGallery = registerForActivityResult(RequestMultiplePermissions()) { 
        ...
    }

    val takePicture = registerForActivityResult(RequestMultiplePermissions()) { 
        ...
    }

    val shareImage = registerForActivityResult(RequestMultiplePermissions()) { 
        ...
    }
}

Is it possible to incorporate this logic into the

checkPermissions()

function itself?

Would it be difficult to write a CSV parser that maps lines to a data class based on annotations? The first question would be what I need to declare own annotations. Do I have to create a compiler that interprets these annotations? Edit: I know there are CSV libraries out there. It's for the learning effect.

How do we generally define coroutine scope on Android and on the backend? Constructing coroutine scope by @marcinmoskala https://kt.academy/article/cc-constructing-scope

hi, jacoco 0.8.7 is not working with kotlin 1.5.31 but it works with 1.4 btw. Is there a way to resolve this ? Or is there an alternate to jacoco for code coverage ?

This message was deleted.

a simple question, i remember the possibility to run simple kotlin file in Android Studio without launch app, like a playground.

What would be the correct approach to do this. I am getting an error

Hey Guys, I have enum class and I am mapping by value, when I am return Enum value it always complain about null issue.

enum class ConversationStatus(val status: String) {
    OPEN("open"),
    CLOSED("closed");

    companion object {
        private val mapByStatus = values().associateBy(ConversationStatus::status)
        fun fromType(status: String): ConversationStatus {
            return mapByStatus[status]
        }
    }
}

How can i avoid this ?

Anyone know if there is a kotlin coroutine implementation of java.io.File? EG, non blocking calls for things like createNewFile() and ZipFile(…)

What is the proper way to use the `

plugins.withType<com.android.build.gradle.LibraryPlugin> { }

in Gradle Kotlin Script DSL? I’m trying to configure multiple gradle modules via the gradle

submodules

block in the root build.gradle.kts. I’ve never been able to figure out how to do this though.

I already have this function fun replaceArabicNumbers(number: String): String{ return number .replace("٠", "0") .replace("١", "1") .replace("٢", "2") .replace("٣", "3") .replace("٤", "4") .replace("٥", "5") .replace("٦", "6") .replace("٧", "7") .replace("٨", "8") .replace("٩", "9") }

Just released this tiny library to encrypt DataStore using Tink.

This library will be maintained until an official solution for DataStore encryption will be released by Google.

I loaded https://github.com/corona-warn-app/cwa-app-android into vscode, and the language server gives me lots of errors, e.g.

None of the following functions can be called with the arguments supplied: 
public/*package*/ constructor Module(loader: ClassLoader!) defined in java.lang.Module
public/*package*/ constructor Module(loader: ClassLoader!, descriptor: ModuleDescriptor!) defined in java.lang.Module
public/*package*/ constructor Module(layer: ModuleLayer!, loader: ClassLoader!, descriptor: ModuleDescriptor!, uri: URI!) defined in java.lang.Modulekotlin(NONE_APPLICABLE)

I'm not even sure how to debug that. Looks like the language server doesn't have all the source loaded?

Hi Everyone, We have an Android SDK written in Kotlin. Our SDK can be consumed in Apps written in Kotlin as well as Java. We're trying to add an optional method in an interface (i.e with default implementation 

fun method(){}

). Kotlin based Apps won't complain about new method while Java based Apps will complain about implementing the new method added to the interface. Is there any thing we can do so that it's not a breaking change for Java based apps?

Hey I want to call a PUT http request. I want to parallel asynchronous call multiple times with different id. So how can be possible to do in efficient way. Do i need to use flow ?

I'm trying to load an android project into intellij, but it fails via

> This version of the Android Support plugin for IntelliJ IDEA (or Android Studio) cannot open this project, please retry with version 2020.3.1 or newer.
> Failed to stop service 'com.android.build.gradle.internal.errors.SyncIssueReporterImpl$GlobalSyncIssueService_4e280c73-f191-497b-9e82-c0aa147e7cbd'.
   > Failed to find target with hash string 'android-30' in: /opt/android-sdk

I can't find the android support plugin in the settings, intellij version 2021.2.2 I ran

sdkmanager "platforms;android-30"

So the platform should be installed.

When using a third party library, which type of logger would you prefer that the lib is using? 1️⃣ slf4j 2️⃣ Timber 3️⃣ let me provide my own implementation of a logger interface to the library 4️⃣ something else, please state in the comment. If you would take your time and comment a reason why would be highly appreciated.

This message was deleted.

Hello guys, i dont know if any of you have passed through a situation like that, but, an open source lib i was using (https://github.com/rozkminiacz/DirectionsSDK) was published with bintray .... and now that its offline, i cant even get the clients project to build ... do you have any tips? thanks

hello. I have two Kotlin classes -> Human and Main. Human is a model class which has private var - name, age, address, language. I want to create a Human instance in Main and access all of its data fields. In Java, we used to implement getter and setter for each field. What is the tradition in Kotlin? and also, how do we generate getter setter like we used to do for Java?

hey i have list. I want to update item on top of list. So which way is efficient in performance, memory management etc.

fun main() {
    val listOne = mutableListOf(2, 3)
    listOne.add(0, 1)
    println(listOne)

    var listTwo = mutableListOf(2, 3)
    listTwo = (mutableListOf(1) + listTwo).toMutableList()
    println(listTwo)
}

what's the d/w both example?

good morning ! What the "!!" means ?