There is scenario, in my staging app where I need to change my base url provided by user. But issue is I have injected retrofit object using dagger(Using @Provides annotation). Now is it right to re inject my DaggerAppComponent or how should I have been proceeded.

Hi guys. I am not sure here is the right channel to ask, but could you help a question. After update to use Android Gradle Plugin 3.6.1, our unit test keeps getting

OutOfMemoryError

exception.  It happens on the building phrase with this task

generateDebugUnitTestStubRFile"

We have multiple modules, and OOM error occurs randomly I can fix the issue by increasing the gradle max-heap size, but it’s not a good option because we ’re very close to the limit of the hardware.  So far, what I have tried are: 1. Update Gradle to 6.2.2 2. Tried to turn on/off grade worker API with `kapt.use.worker.api`&

android.enableGradleWorkers

flags (they are off by now) 3. Play around with some testOptions flags (https://docs.gradle.org/current/dsl/org.gradle.api.tasks.testing.Test.html), for example forkEvery, maxParallelForks. But I am not sure it would help, because the failure happens on the building phrase. Here is the crash log:

Caused by: com.android.ide.common.workers.WorkerExecutorException: 1 exception was raised by workers:
 java.lang.OutOfMemoryError: GC overhead limit exceeded
   at com.android.ide.common.workers.ExecutorServiceAdapter.await(ExecutorServiceAdapter.kt:108)
   at com.android.ide.common.workers.ExecutorServiceAdapter.close(ExecutorServiceAdapter.kt:118)
   at <http://kotlin.io|kotlin.io>.CloseableKt.closeFinally(Closeable.kt:53)

The crash happened by this line of code.  https://android.googlesource.com/platform/tools/base/+/studio-master-dev/build-system/gradle-core/src/main/java/com/android/build/gradle/internal/res/GenerateLibraryRFileTask.kt#120 It will be very appreciated if anyone of you would suggest any solution or direction to investigate. Generate a heapdump is on my plan

I enabled the

viewBinding

in Android Studio 3.6.1, with Gradle 6.2.2, Android Gradle plugin 3.6.1 and Kotlin Gradle plugin 1.3.70. This code:

val binding = SomeLayoutBinding.bind(itemView)

produces this warning in the IDE:

Declaration has type inferred from a platform call, which can lead to unchecked nullability issues. Specify type explicitly as nullable or non-nullable.

Even though, when I open the generated

SomeLayoutBinding.java

file, I see that it's annotated with `@NonNull`:

@NonNull
  public static SomeLayoutBinding bind(@NonNull View rootView) {

Am I missing something here? Anybody else has this issue? Where would I even report it?

Map<String,Any> vs Map<,

val data: MutableMap<String, Any>
/..../
val client = data.get("MY_DATA") as Map<String, Any>//Unchecked cast: Any? to Map<String, Any>

android studio suggest to convert it to

val client = data.get("MY_DATA") as *Map<*, *>*

What is difference between both?

Typing Kotlin code in Android Studio is too slow. Please consider voting for this issue to draw more attention to the problem. https://youtrack.jetbrains.com/issue/KT-32158

Hey everyone! I've heard that some of Android developers use IDEA instead of Android Studio. Is there any reason to do so?

can I create ViewModel instances myself or do I have to do it with

by viewModels()

? tried to google

creating view model manually

and

kotlin by viewModels()

, couldn't find anything interesting

I'm using

setHomeAsUpIndicator

to display a drawer icon which is placed by default on the left side. Which function can I use to an icon on the right side of the toolbar?

I'm having a problem where when I have navigated according to the actions selected in the images below, and then click the android back button from the findJobsFragment, the app goes to the background as expected. However when I open the app again, I am returned to the homeFragment instead of the findJobsFragment. How can I get the expected behavior? https://imgur.com/DWf20LU https://imgur.com/2BKGHtn

Does anyone have any tips on getting consistency between code style for developers? It seems like IntelliJ codestyle is a little different between intellij/kotlin style, and then there's also https://developer.android.com/kotlin/style-guide. Seems like a lot of options, but I'm looking for something turnkey that works in static code analysis and works easily to import into intellij so the IDE formatting matches the actually analyzer. Not the biggest nitpicker on style, and using something out of the box from square or another trusted company would be cool. Curious to hear what everyone is using!

Just published an article “🔪Introduction to #Dagger DI 💉 by a Life way!”. #DI is well explained with a simple Life ❤️ example. It'll help you in understanding concept and to start with it😉. Link: https://link.medium.com/eH7FMnO0R4 #kotlin #androiddev #androiddevelopment #java #android #dagger2 #square #google #inject

Is there a standard/recommended way that I can write, for example,

Observable.zip(obsA, obsB) { a, b -> a + b }

instead of

Observable.zip(
        obsA,
        obsB,
        BiFunction { a, b -> a + b }
)

? I know how to write

SomethingCustom.zip(obsA, obsB) { a, b -> a + b }

but I'm asking if there's a best practice or well-known library or something

Hi i am new in mobile development. I would like to ask if there is something like .env in android development? Thanks

Hi everyone. I have question i need to 3 screens they are same but content is different by content i mean i m same request but query of request depends on status that i give. So my question i wanna call one fragment but with different args problem is how can i call one viewmodel to every instance of fragment?

Hi everyone I am creating a custom BottomBar by extending

BaseTransientBottomBar

. But it is taking bottom Margin I want it to stick to bottom but it takes some default Bottom Margin. I am using below code to remove the bottom margin

(view.layoutParams as MarginLayoutParams).setMargins(margin10, 0, margin10, 0)

Is there any way to remove the bottom margin?

I have a domain module (contains model and use-cases) and ui-module, ui-module is dependent on domain module. I need to parcelize one of the model of domain-module, but to use it, i need to convert it to android library to take leverage of

@Parcelize

Any way, can i make use of

typealias

and

expect

and

actual

without converting the domain pure kotlin module to android module?

It seems like WorkManager's

CoroutineWorker

uses

launch

to run

doWork

, does that mean that a crash can't be caught with a regular try/catch? Does a

CoroutineExceptionHandler

need to be installed for that? If so, where?

Good-day guys, So i'm using openapi to generate some kotlin-client code, however i want to be able to use the models as Entity for android ROOM, is there a way to go around this? The models are data classes so i can't extend them

This message was deleted.

IDEA report a type mismatch here while Android Studio doesn’t. Both use latest Kotlin 1.3.70 plugin with New Inference enabled. Why is that? If I try to compile the code that Android Studio accepts, I also get the same error there at compile-time. It’s just the IDE that doesn’t report it. RxJava3’s

Function…

is marked

@FunctionalInterface

. Is it supposed to work like I’m trying to use it or isn’t it? 🙂

Hi how to use kotlin khttp lybrarie to make a request in Android App

My Activity observers 3 `MutableLiveData`in a

ViewModel

. I change their values one after another:

advertisementGoal.value = editModeInitialAdvertisement!!.goal
advertisementTargetUserType.value = editModeInitialAdvertisement!!.userTypeTarget
selectedExpertiseField.value = editModeInitialAdvertisement!!.expertiseField.id

Is this a race condition? or do

LiveData

in the UI trigger

onChange()

in order?

Does this idea of screen state make sense? I want to emit an empty screen state from viewmodel to ui and the screen state has a kotlin lambda inside of it for a call back when a button is clicked. E.g:

data class (
    val message: String,
    val callback: () -> Unit
)

What is the major difference between a JobIntentService and a JobService?

Guys can anyone give me some advice? I got this screen. The green and white part is a recyclerview with its height set to WRAP_CONTENT. The entire recyclerview is constrained to all edges of the screen, and yet, as you can see, it is centered, with its content being wrapped... What i would expect is the content to be positioned from the top, not from the center. IS there a way to do this?

Hi there, I have a RecyclerView (vertical) with a inner RecyclerView (also vertical). Reason I have that is because the inner RecyclerView has to be wrapped by a CardView and can be collapsed/expanded. Problem is that the inner adapter is not recycling the views and is binding all of them at once, not just the visible ones. Whats the suggestion to solve this problem or another approach to impl this? I thought about creating one single RecyclerView with an item decorator where the first have the card borders (left/top/right), the last have (left/bottom/right) and the others have just the left/right.

I am trying to use junit 4.13 for unit testing in Android, then I am getting unresolved for it

📚 Android Sample App using modular, clean, scalable, testable Architecture written in Kotlin that presents modern 2019 approach to Android application development, latest tech-stack and best practices. Application is based, apply and strictly complies with each of the following 5 points: • A single-activity architecture, using the Navigation component to manage fragment operations. • Android architecture components, part of Android Jetpack give to project a robust design, testable and maintainable. • Pattern Model-View-ViewModel (MVVM) facilitating separation of development of the graphical user interface. • S.O.L.I.D design principles intended to make software designs more understandable, flexible and maintainable. • Modular app architecture allows being developed features in isolation, independently from other features. For more technical details please check the project readme. Project link: https://github.com/VMadalin/kotlin-sample-app

Given the following viewmodel:

class ViewModel {
    val selectedColor: Flow<Color> = ...
    fun onNewColorSelect(newColor: Color) {
        ...
    }
}

How can the

onNewColorSelect

method update the selectedColor flow? With Android, you would use MutableLiveData. How would you solve this problem with Flow?