Hi, does anybody know about some equivalent for hasSubscribers() method in ConflatedBroadcastChannel? I want to implement Repository pattern with updateIfNeeded() method and I need to know if there are real subscribers(views) to my repo..

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Hi guys. What is the difference between liveData {} and viewModelScope {} builders in ViewModel? Does liveData survive activity recreation?

Hi! Is it okay to check via ConnectivityManager do user have an internet connection?

Hey guys, I'm trying to migrate all of our Android build.gradle files to build.gradle.kts. I'm having a hard time finding the right syntaxes and names, all Android documentation only gives Groovy examples. Is there some documentation where I can find all DSL methods etc.?

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Hi, Can someone please tell me what does

out

mean in this context ? , thanks.

/**
 * A generic class that holds a value with its loading status.
 * @param <T>
 */
sealed class Result<out R> {

    data class Success<out T>(val data: T) : Result<T>()
    data class Error(val exception: Exception) : Result<Nothing>()
    object Loading : Result<Nothing>()

    override fun toString(): String {
        return when (this) {
            is Success<*> -> "Success[data=$data]"
            is Error -> "Error[exception=$exception]"
            Loading -> "Loading"
        }
    }
}

/**
 * `true` if [Result] is of type [Success] & holds non-null [Success.data].
 */
val Result<*>.succeeded get() = this is Success && data != null

Hey guys, did anyone try writing Repository class with suspend function where the data is wrapped into NetworkBoundResource(showcased in architecture component sample GithubBrowser) and then exposed to ViewModel.

How can we mock

FirebaseAuth.getInstance().signInWithCustomToken(token).addOnCompleteListener{}

and other Task like

addOnSuccessListener

and

addOnFailureListener

using MockK ?

I'm trying to parcelize an inline class but I'm getting a runtime crash

java.lang.NoClassDefFoundError: Failed resolution of: LpackaageName/DealershipId$Creator;

@Parcelize
inline class DealershipId(val value: String): Parcelable

Did anybody encounter this? Kotlin 1.3.70, but wasn't working on 1.3.61 either

Hi, did anyone there made their

NotificationCompat

Kotlin extensions? I personally made some, and I'm looking for folks to discuss API design regarding extensions for these APIs. I'm looking forward exchanging inspiration to get to a DSL that is the lest error-prone and forget-prone possible, and very readable (can't stand these

NotificationCompat.PRIORITY_

and similar prefixes). Right, this is what I have, and I know I can make improvements, but I'd like to bounce off improvement ideas.

val notification = buildNotification(ChannelIds.Something) {
    priority = NotificationCompat.PRIORITY_MAX
    category = NotificationCompat.CATEGORY_STATUS
    visibility = Public
    contentText = "Some content text"
    smallIcon = R.drawable.ic_some_icon_white_24dp
}

//Compare 2 json files
val parser = JsonParser()
val o1 = parser.parse("{\"state\":1,\"cmd\":1}")
val o2 = parser.parse("{\"state\":1,\"cmd\":1}")

println(o1 == o2)

This seems to be enough ;-)

I’m trying to understand how companion objects lifetimes interact with the Android lifecycle. I have an app that includes something like this:

class MainActivity {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)
        Metadata.initialize()
    }
}

class Metadata {
    companion object {
        boolean initialized = false

        fun initialize(context: Context) {
            check(!initialized)
            // do stuff (omitted)
            initialized = true
        }
    }
}

Sometimes my app fails because the

check

at the beginning of

Metadata.initalize()

fails, which implies that the companion object is surviving the destruction of

MainActivity

, despite their presumably being in the same process. Could someone help me understand why the companion object stays around even if the activity needs to be re-created?

Hey, does anyone know a good open source photo editor?

Any reason my layout is not being found? this is R

com.nikolam.nsdkelper public final class com.nikolam.nsdkelper.R

and this is what's happening, the last thing i added was my library module to my app.gradle

dependancies{
implementation project(":nsdkelper")
}

I tried the solutions found online, the cache, the rebuild and so on, but haven't had any luck.

for MockK, i'm getting

MockKException: no answer found for: MyClass(#1).sendMessage(okhttp3.RequestBody$2@4ed4bd33)

, actually RequestBody's properties are same just instance is different. that's why it did not matches parameters but if i add

any()

instead of requestbody it works. is there anything else i can use instead of

any()

here ?

every {	myClass.sendMessage(MockRequest.createTestBody(value="text")) } answers { something }

....

class SomeObject(myClass:MyClass){
	fun doSomething(text: String): Flowable<Result<Boolean>> {
        val request = MockRequest.createTestBody(text)
		myClass.sendMessage(request)
	}
}
....

i have checked documentation of mockk but didn't found anything, that's why asked here:

How can I change the Toolbar font while I have structed my styles.xml like this

Does anyone know why the

onDestory

function of a fragment wouldn’t be called when closing the app ?

does anyone know the difference between the kotlin-android and kotlin-android-extensions plugins? i see people applying both, but i can't find any official doc reference to kotlin-android anymore

is there an easy way to have a`scope` that would cancel job in

onStop

. I'm thinking of equivalent of: https://github.com/trello/RxLifecycle So I would like start

Flow

in

onStart

and have it canceled by

onStop

. From what I see

LifecycleCoroutineScope

has only option to cancel it on destroy

I’d like to start using

ViewModel

for my state. Could anyone advise me how to adapt the https://developer.android.com/topic/libraries/architecture/viewmodel example to support the case where an argument needs to be passed into

getUsers()

and through to

loadUsers()

for it to do its job?

class MyViewModel : ViewModel() {
    private val users: MutableLiveData<List<User>> by lazy {
        MutableLiveData().also {
            loadUsers()
        }
    }

    fun getUsers(): LiveData<List<User>> {
        return users
    }

    private fun loadUsers() {
        // Do an asynchronous operation to fetch users.
    }
}

I could store the information in an instance variable from

getUsers()

and retrieve it from

loadUsers()

, but that doesn’t seem very nice. What I need to pass in is a

Context

(to access assets and the package manager). I don’t cache the Context.

is this channel to help with kotlin on android studio ?

Android studio gives me this error after upgrading android studio kotlin plugin version to

1.3.70-eap-42-Studio3.6-1

Cause: org.gradle.tooling.model.kotlin.dsl.KotlinDslScriptsModel can only be requested on the root project, got 'project ':app''

PS: I am not using kotlin dsl for gradle, I am using groovy

Kotlin as a language is comfy though, barring the Android bit.

Is it possible to enable assertions in Android debug builds via gradle (and not in release builds)?

why can’t I update to android studio 4.0 beta 2 from mac?

I have a module that I modified and rebuilt. However when debugging an app that uses the module it appears to be using an old version of the module. I have cleaned and rebuilt everything, but nothing seems to work. Any ideas?