Get the list of collections inside of a firebase firestore document in kotlin Im trying to write a function in kotlin that will get all collections inside of a firebase firestore document. The database consists of the "doneExercises" collection inside of which theres a document named "goran". I want to get all the collections inside of that document...

Can I implement different layers of an android app with different programming languages? I want to work on an android app that uses jetpack compose.I wanted to know if I can implement the ui layer in kotlin and the other layers in Java? I googled this problem and didn't find anything

RxJava with zip operator run everything in the same thread I would try to do 2 func in the same time fun getDataSync() { compositeDisposable.add( Observable.zip( repository.getData().subscribeOn(Schedulers.io()), repository.getData3().subscribeOn(Schedulers.io()), { a, b -> a + b } ) .observeOn(AndroidSchedulers.mainThread()) .subscribe( { _data.value = it },...

Kotlin: retain coroutine context in scenario with nested runBlocking I'm fairly new to kotlin coroutines, and I have what I think is a somewhat esoteric use case related to how runBlocking and coroutine contexts interact. To start with, a simple example. Let's say I've got a dead simple context element. Nothing fancy. class ExampleContext(val s: String) : AbstractCoroutineContextElement(Key) { companion object Key : CoroutineContext.Key } When I run these examples, they behave exactly the way I'd expect them to: runBlocking(ExampleContext("foo")) {...

BroadcastReceiver does not receive anything I am using a broadcast receiver to exchange data between a service and the MainActivity, but the receiver doesn't receive anything. Does anyone know what's the problem here? Receiver code: private var broadcastReceiver = object : BroadcastReceiver() { override fun onReceive(context: Context, intent: Intent) { val extras = intent.extras if(extras != null){ when(extras.getString("message")){ "lock_phone" ->...

Element after LazyColumn (Keep scrolling LazyColumn) Might be pretty basic but I can't figure it out. So my goal is to display some text after the last list item. But seems like scrolling down the LazyColumn just gets me to the last LazyColumn item therefore the text that goes afterwards is not visible. I want to be able to keep scrolling Column(modifier = Modifier.fillMaxSize()) { LazyColumn() { items(list) { //display list elements } } Spacer(modifier = Modifier.height(8.dp)) Text(text = "end") <a...

What is java.lang.IllegalArgumentException: URL query string "name={name}" must not have replace block. For dynamic query parameters use @Query I am trying to fetch probability of Nationality from the basis of given name. For that I am using following api urlhttps://api.nationalize.io?name=michael. At the place of Michael, I want it for any random name that I will give as an input. But when I click the fetch button it gives me following error in the code "java.lang.IllegalArgumentException: URL query string "name={name}" must not have replace block. For dynamic query parameters use @Query.". I even changed my query from @Call to...

How can I iterate through nested HashMaps in Kotlin? I am new to Kotlin, and I am having trouble finding an idiomatic way to translate the snippet of Python below into Kotlin. Let's say that I have a list of words that I am trying to insert into a Trie data structure, represented as nested dictionaries in Python. Terminal nodes in the Trie will be marked simply by adding the key # to that level of the dictionary. trie = {} for word in words: cur = trie for letter in word: if letter not in cur: cur[letter] = {}...

The wrong "items" funciton is being selected by lazy row unless i specifically import "import androidx.compose.foundation.lazy.items" So im trying to follow an example from jetpack compose for lazyrows When creating the lazy row object unless i specify this import: import androidx.compose.foundation.lazy.items the items function inside the lazyrow function throws this error: Type mismatch: inferred type is List but Int was expected I believe its going to a different function based on the inputs, but im trying to figure out why the import statement above fixes it. All of the "items" functions are defined within the same file...

Linphone import fail in Intellij Idea even after download from Maven Repo is completed Background: I am a building VoIP transfer proxy application in Kotlin which will run in Server. This application registers and accepts SIP calls from SIP server as SIP client, and converts the SIP signals and media stream into private protocol and transfer to a MCU board which plays and collects audio. The private protocol part is done now, and I am trying to use Linphone SDK for the SIP part runs in the application. Problem: When I use Linphone SDK in Android Studio, everything works fine,...

How to send document to apps script kotlin android Currently Iam sending string and image file as string. to sheet via Apps script (sheet extension). Now I need to send a document files like (.zip, .glb, .obj, .arp, etc) I need to send these type of files to google sheet. so now I need to make user selected files as .zip. so now I need to send that .zip file to google sheet. but I couldnt do that. private fun startUploading() { try { val map: HashMap = HashMap() map["instagramLink"] =...

MutableSharedFlow custom implementation I am using a MutableSharedFlow instantiated like this: val flow = MutableSharedFlow( replay = 10, onBufferOverflow = BufferOverflow.DROP_OLDEST ) How could I create a custom implementation that notifies when the buffer overflows and records have been dropped?

MapBox speedLimit return null value in android I would like to use Mapbox to get the road speed limit value but returned the value from LocationObserver always is null while speed limit value in the official map box app has value In the same direction. how can i fix this problem? setup mapBoxNavigation: if (!MapboxNavigationApp.isSetup()) { MapboxNavigationApp.setup { NavigationOptions.Builder(this) .accessToken(MAPBOX_ACCESS_TOKEN) .build() } }...

Not getting local notification using Alarm Manager I have watched and read lots of videos and articles about implementing local notifications. I have implemented the code there seems to be working but it's not Here is NotificationReceiver class extended with BroadcastReceiver: const val notificationID = 2 const val channelID = "channel4" const val titleExtra = "titleExtra" const val messageExtra = "messageExtra" class NotiReceiver : BroadcastReceiver() { override fun onReceive(context: Context, intent: Intent) { val notification...

How to return a value from the body of addOnSuccessListener? fun retrieveUser(): User{ mFireStore.collection(Constants.USERS).document(getCurrentUserID()).get().addOnSuccessListener { document -> val user = document.toObject( User::class.java) return user } I want to return the user so that I can use it somewhere else in the program.

Data not visible with binding adapter I want to display data on xml using binding adapter. But the data does not appear on the screen. What is the problem? My Code: package com.nisaefendioglu.movieapp.adapters import android.widget.ImageView import androidx.databinding.BindingAdapter import com.bumptech.glide.Glide @BindingAdapter("load") fun loadImage(view: ImageView, imageUrl: String?) { imageUrl.let { Glide.with(view).load(it).into(view) } } xml :...

Firebase storage download url giving " com.google.android.gms.tasks.zzw@84a2f88" type. -----KOTLIN----- imageUri contains file pciked from gallery putfile is working good, firebase storage is always getting the file. val storRef = FirebaseStorage.getInstance().reference, also tried val storRef = Firebase.storage.reference Following are my tried methods and their results Empty url if (imageUri != null) { val strRef = storRef.child("${auth.currentUser!!.uid}/images/${imageUri!!.lastPathSegment}.jpg") strRef.putFile(imageUri!!).addOnSuccessListener { it.storage.downloadUrl.addOnSuccessListener...

NFC Reader APP, Targeting S+ (version 31 and above) requires that one of FLAG_IMMUTABLE or FLAG_MUTABLE be specified when creating a PendingIntent We have an Android NFC Reader APP was working perfect now it has errors and the APP gets crashed. 2023-01-22 150914.813 3602-3615/? E/PRM_CONFIG_Parser: get_custom_config not found 2023-01-22 150914.830 4162-4351/? E/PostureManager: fail to get service 2023-01-22 150914.832 4162-4351/? E/PostureManager: fail to get service 2023-01-22 150914.834 4162-4351/? E/PostureManager: fail to get service 2023-01-22 150914.884 12662-12662/? E/AndroidRuntime: FATAL EXCEPTION: main Process:...

Easiest way to modify value passed to inline class constructor I'm trying to use inline classes in Kotlin to create a class inlining the String class, such that if I have an instance of my class that it will always be true for the contained string that s == s.trim(). I was initially expecting there to be a straightforward way to do this, like perhaps: @JvmInline value class Trimmed private constructor(val str: String) : { constructor(s : String) : super(s.trim()) } but that doesn't work, and neither do the other direct approaches I considered...

Quarkus - how to use a user session? I have some data that will be verified and retrieved through token in Authorization Header. Then how can I set the data in some session so that it could be used in another class without verifying it again? Here is my filter class override fun filter(@Context context: ContainerRequestContext) { val token = context.getHeaderString("Authorization") verify() // FirebaseAuth verify val id = token.id //retrieved from token val name = token.name //retrieved from token } And in my...

How to specify flow merge/combine/zip type from 'Any' to another? I have function like this: val flow = pointsFlow .map { points -> prepareitems(points, listOf()) } .stateIn(viewModelScope, Lazily, listOf()) flow is a type of StateFlow But I need two flows to merge/combine/zip. The idea is to get two flows and at once prepare dashboard. my idea: fun dashboardMergeFlow() = merge(pointsFlow, items).map { prepareItems(pointsFlow.value, items.value) }.stateIn(viewModelScope, Lazily, listOf())

Trying to implement the TornadoFX "Motivational example" I'm trying to implement the motivational example from this page: https://docs.tornadofx.io/0_subsection/1_why_tornadofx For this I need a data class Person as defined here: class Person(id: Int, name: String, birthday: LocalDate) { val idProperty = SimpleIntegerProperty(id) var id by idProperty val nameProperty = SimpleStringProperty(name) var name by nameProperty val...

How to test a service function in kotlin which uses a late init Id? I am new to testing in kotlin and I was wondering how I can test this function: this is my SegmentService file: fun createSegmentFromUserIds(userIds: List, name:String, appId: String): Segmentation { val filter = createUserIdFilter(userIds) val createSegmentRequest = CreateSegmentRequest( name = name, attribute = filter, type = SegmentType.STATIC ) val segmentation = segmentMetaService.saveSegmentInfo(createSegmentRequest, appId)...

How to align button of RadioButton in Android Studio I'm doing a SignUp form to select the gender with a RadioGroup and three RadioButtons. The problem is that I want to center the button but it shows aligned on the left. radio group code: I tried to use attributes on XML, also styles to set gravity but it does not work. Here is the code of female_radio_btn.xml: Does someone know if I'm doing it the right way? Thanks!

Getting 400 when uploading video with YouTube API When trying to upload a video using YouTube Data API, I get: Exception in thread "main" com.google.api.client.googleapis.json.GoogleJsonResponseException: 400 Bad Request POST https://www.googleapis.com/upload/youtube/v3/videos?part=part&amp;uploadType=resumable { "code": 400, "errors": [ { "domain": "youtube.part", "location": "part", "locationType": "parameter", "message": "'part'", "reason": "unknownPart" } ], "message": "'part'" } at...

GET request in retrofit in android is not working I am trying to learn compose and retrofit and for that I am developing a very easy app, fetching jokes from a public API and showing them in a lazy list. But it is not working and I am not able to see any jokes. I am new to Kotlin and Jetpack compose. Please help me debug this. I have a joke class data class Joke( val id: Int,. val punchline: String, val setup: String, val type: String ) This is the API I am GETing from: https://official-joke-api.appspot.com/jokes/:id This...

Type inference in Kotlin lambdas fails when using `it` special variable I fail to understand, why the following compiles: directory.listFiles { it -> it.name.startsWith("abc") } but this doesn't: directory.listFiles { it.name.startsWith("abc") } Am I correctly assuming that in the first case, the type of it is inferred via the name property? Why is this not happening in the second case?

How to implement recyclerView in another recyclerView of different views? I'm using data binding, but I have stopped in the moment where I would like to insert recyclerview inside another recyclerview. I have recyclerview of different views like: title section, image section, recyclerview section, bottom section. What I can do I can implement one element from recyclerview using list.first(), but I do not know how to implement all items and then handle clicks on one elements (usually I could create new adapter and on seperated adapter I could create functions like...

Kotlin- Coroutines read file Main function: val users = CoroutineScope(Dispatchers.IO).launch{readFile()}.toString() readFile: suspend fun readFile(): String = withContext(Dispatchers.IO){ ............. return@withContext fullString } I'm not sure if my code is good, because im creating 2 coroutines. first one is by using CoroutineScope (Dispatchers.IO) and second one is in readfile using withContext. what is the best approach to this? Read file using coroutines

How to return a retrieved document from Firestore? FirestoreClass fun retrieveUser(): User{ return user } UserProfileActivity val retrievedUser = FirestoreClass().retrieveUser()