Nested JsonSubType using JacksonMapper in kotlin I have a message delivery system which can be either a push notification, or sms or ... and each of these can have their own subtypes, like Sms can be Irancell or Mediana or ... I want to use JsonSubType to find out the class of my message and use their corresponding sending mechanism. here is my code: class MedianaSmsMessage( override val receiver: String, override val message: Message, override val app: App, override val requester: DeliveryRequester, override val...

Upload files from android to FTP I want to upload images in phone directory using Kotlin in android studio to ftp server, but it returns Error: /storage/emulated/0/Pictures/AsterPhoto-Image: open failed: EISDIR (Is a directory) private fun main() { val server = "" val port = 21 val user = "" val pass = "" val ftpClient = FTPClient() try { ftpClient.connect(server, port) ftpClient.login(user, pass) ftpClient.enterLocalPassiveMode()...

Unable to create a folder with mkdir on Android device with Superuser I am using LIBSU by John Wu to run superuser commands on my android app. My objective is to create a folder with mkdir but it seems that the command runs successfully but the folder isn't created. Here's my code: fun createDialog(packageInfo: ApplicationInfo) { val folderName = "LOL" val packageName = packageInfo.packageName sudo(packageName) } fun sudo(packageName: String) { val path =...

Android: lifecycleScope.launchWhenResumed {} deprecated I've been using lifecyclesScope's launchWhenResumed for a long time now, but it seems to be deprecated. The documentation sais to use repeatOnLifecycle() but I only want the code to run once, just as it works with the old method.

why is my request not successful (i am pretty new) My function to get reviews `private fun reviews(page:Int) { val reviews = seeReview.reviewins.getReviews(id.toInt(),page) //reviewadapter vreation reviews.enqueue(object : Callback{ @SuppressLint("SuspiciousIndentation") override fun onResponse(call: Call, response: Response) { val data= response.body() Log.d("review", "onResponse: "+data.toString()) reviewAdapter= ReviewAdapter(this@show_Movies, data!!.results) val reviewREcycle=...

Jetpack compose how to reduce amount of arguments in a Composable function (clean-code)? In my application I've hoisted every major functionality and after that I've ended up with a huge Composable function: HomeScreen.kt TopSection( filterParametersState = filterParametersState, itineraryCount = flightsFromApiResponse.result?.itineraryCount ?: 0, buttonNames = viewModel.buttonNames, buttonNamesFilters = viewModel.buttonNamesFilters, selectedButtonIndex = viewModel.selectedButtonIndex.value,...

Am i correctly using coroutines in Quarkus project? I'm working on a big Quarkus non-reactive project. The migration as a reactive one is off the table for now. I have different long running tasks to start from API calls, tasks that could be cancelled anytime on-demand. So I developped a small library starting a block of code (provided by the library caller) inside a coroutine. A reference is kept and returned to the API response for later potential cancellation. The content of my task is to fetch a bunch of data from a DB and publish it to...

I always get "Unresolved reference" on imports. Ktor so I'm having problems when trying to manually use new (some specific) imports. I am trying to send a Http request in with Ktor/Kotlin. But I cant seem to get some one of the imports to work. I hit this wall over and over again. "Unresolved reference: ". My progress is like this: (for example want to use the function "val client = HttpClient(CIO)" 1: Get the import at the top import io.ktor.client.engine.cio.* " 2: Notice i get "Unresolved reference: cio" so i add the ktor-client-cio...

How to simplify complex category condition in Kotlin I have so many condition and I want to check value and find the category of that range. I tried it and it working correctly. I thought there is a simple way to do solve this kind of logic problem in kotlin. I want to be easy this kind of problem for testing purpose and many more. class Abc { val list by lazy { mutableListOf( getFirstItem(), getSecondItem(), getThirdItem(), getFourthItem(), getFifthItem(),...

Serializing entities and sending response gives the entity property name instead of the column name I'm trying to understand how to get certain entities through the database and get the column names instead of the property names of the entity and serialize them and send the response. get("/v1/posts") { val posts= service.getAll() val mapper: ObjectMapper = JsonMapper.builder() .addModule(JavaTimeModule()) .addModule(KtormModule()) .build() val json = mapper.writeValueAsString(posts) call.respond(HttpStatusCode.OK, json)...

Problem in import statement of databinding I cannot import databinding to my project. I enabled databinding and imported the databinding class in my kotlin code but I get unresolved error. I verified my build.gradle (:app) file and there is no issue there and I had put the correct statements that enable databinding and the build is successful. I still got the error. I cleaned and re built the project but still the error persists. I also invalidated the cache and restarted the project but still the error persists.

JGraphT: Infinite Loop in Blossom/KolmogorovWeightedPerfectMatching algorithm I'm trying to use the Blossom algorithm in JGraphT to create a pairing between a set of teams using costs based on whether they have already played each other and what their relative point difference is (i.e., Swiss-like). But in every 5000 or so instances, I get what appears to be an infinite loop (or at least, something that should take 1/1000 of a second taking at least ten hours, which feels like an infinite loop to me). Here is my (Kotlin) method that calls...

Why am i unable to use this simple code in my kotlin repl I receive this error ----- error: incompatible types: IntRange and Int 3..12 -> print("Good fish name") var fishName = "anyname" when (fishName.length){ 0 -> print("Error") 3..12 -> print("Good fish name") else -> { print("OK fish name") } } I was expecting to be able to have the message "Good fish name" be printed out.

Firebase cloud function call give internal error I am getting internal error from function call in android studio. Can anyone help me out what's the possible issue here? Cloud Function exports.getSuggestions = functions.https.onRequest(async (req, res) => { if(req.method=="GET") { var suggestions_dict = {1{1[], 2:[], 3:[]}, 2{1[], 2:[], 3:[]}, 3{1[], 2:[], 3:[]}, 4{1[], 2:[], 3:[]}, 5{1[], 2:[], 3:[]}, 6{1[], 2:[], 3:[]} }; const csvToJson = require('csvtojson'); // Initialize a Cloud...

Forming queries with N parameters using exposed I have a list with N entries from which a would like to form a query that looks something like this. SELECT some_column FROM table WHERE name EQUALS queryEntry_1.name AND value EQUALS queryEntry_1.value OR name EQUALS queryEntry_2.name AND value EQUALS queryEntry_2.value . . OR name EQUALS queryEntry_N.name AND value EQUALS queryEntry_N.value The result I want is every "some_column" that have a name and value in the query list. Every entry in...

MaterialSwitch becomes completely purple when unchecked I was trying to use the Material3Switch but it behaves weirdly when i use the Widget.Material3.CompoundButton.MaterialSwitch style. The switch becomes completely purble when it is unchecked even tho i don't have any purple color defined in my theme or elsewhere. My switch: My theme: @color/BLUEICE...

How to add Button event in Kotlin fragment I want to add Button onclick event in kotlin fragment, and onclick start recording. onclick event: startRecord()

How to use custom start navigation in jetpack compose I want to use custom startDestination but I am getting error. I am giving a INITIAL value on currentRoute but it throw exception. MainActivity.kt class MainActivity : ComponentActivity() { val viewModel: MainActivityViewModel by viewModels() override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) setContent { BasicNavigationTheme { BasicNavGraph(viewModel, true) } } } } @Composable...

How to add Autombed in Dooo.? [closed] La idea es la siguiente, quiero que al momento de agregar una película esa pasa con su enlace de reproducción y no tenga que hacer ese proceso manualmente, tengo una página que me brinda una API para la obtención de los enlaces, pero no sé cómo implementar esa API para que me traiga los enlaces cuando agrego una película. quiero que al momento de agregar una película esa pasa con su enlace de reproducción y no tenga que hacer ese proceso manualmente

Skip serializing GSON field in generics based on value We have the need to distinguish between an optional fields vs. nullable fields (i.e when a field is present, that it could be nullable) when serializing Kotlin data classes to JSON using GSON. The initial thought was to model the optional field as a generic: class Optional(val isPresent: Boolean = false, val value: T) {} That would permit representing it in the following serializable data class: data class SimpleRequest ( val a: Int = 0, val b: Optional = Optional(value = "") val...

Manipulating and accessing a Kotlin's Class Property? newer to OOP and wondering how to correctly do this. I'm hoping this is worded the right way! Anywho, I'm trying to essentially be able to call a undo and redo function on a individual class. So, lets say I have a declaration of this class: val testClass = Property("amount", "25") my ultimate goal would be to call something like: testClass.undo() and have the value of testclass be set to what is called in the undo class. The issue i'm having is the logic i'm calling now, doesn't "finalize"...

How to get Context and Read from Assets folder in Android Every answer on this question is incomplete, and I get a lot of errors when trying to use the code. Example: read file from assets AssetManager am = MainActivity.getAssets(); InputStream is = am.open("book.txt"); I get errors: Non-static method 'getAssets()' cannot be referenced from a static context Cannot resolve Symbol "AssetManager", which Import do I need for this? context.getAssets(); context is undefined,...

Make each element of the RecyclerView a different color I want each element with a different background than the other element in the RecyclerView class ExamSelectionAdapter(private val context: android.content.Context, private val examList: java.util.ArrayList): RecyclerView.Adapter() { inner class ExamSelectionViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView) override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ExamSelectionViewHolder { val view =...

Convert String to JSONObject in Kotlin Response.Listener { response: String -> Log.e("TAG", "RESPONSE IS $response") try { val jsonObject = JSONObject(response) jsonObject.put("status", "Signed Up") Toast.makeText(this@SignUpActivity, jsonObject.toString(), Toast.LENGTH_SHORT).show() Logged an error message to display JSONObject coud not be parsed catch (e: JSONException) { e.printStackTrace() Toast.makeText(this@SignUpActivity, "Error parsing response",...

How to scroll backLayerContent in BackdropScaffold jetpack compose I want to scroll first backLayerContent with frontLayerContent in BackdropScaffold. In my code only frontLayerContent is scrolling and backLayerContent is stuck with predefined height. I don't understand this. Can you please guide me on this? @OptIn(ExperimentalMaterialApi::class) @Composable fun CollapsingTopAppBarStylingScreen() { val scaffoldState = rememberBackdropScaffoldState(BackdropValue.Revealed) BackdropScaffold( scaffoldState = scaffoldState, appBar = {...

Can different layers of concern be coded in different programming languages? [closed] The reason I ask this is because I would be interested in writing the Business Logic in python, to then bring that Business logic (State Management) and connect it with UIs in the different platforms like Apple (Swift), Android (Kotlin). Just one Business Logic, different UI platforms. I've been searching all over for this, but haven't found any information on the matter. Haven't found any information on the subject.

Gradle: why is only only the second commandLine in the outermost scope executed? I have a gradle task in .kts task("myTask-1"){ commandLine("echo", "outside commandLine echo-1") commandLine("echo", "outside commandLine echo-2") println("outside-printl1") println("outside-printl2") doLast { commandLine("echo", "doLast commandLine echo-1") commandLine("echo", "doLast commandLine echo-2") println("doLast printl-1") println("doLast printl-2") } } When I run gradle -q myTask-1 The output is: outside-printl1...

How to scroll up animation in backLayerContent in jetpack compose I want to scroll first backLayerContent with frontLayerContent in BackdropScaffold. I want to Scroll Up animation inside my backLayerContent in Icon & Text. I am trying to learning from this article about AnimatedContent, but it is very hard to understand. Right now I used AnimatedContent content but it's going to fast and I didn't understand which direction...

LazyColumn does not recompose when MutableStateFlow value change I has a LazyColumn which show all the previous outpus and a delete button for each of them @Composable private fun HistoryScreen( outputs: ArrayList, onRemoveButtonClicked: (Int) -> Unit = {}) { LazyColumn( ) { Log.d("DebugRemoveOutput", "Check again: currently having ${outputs.size} output") Log.d("DebugRemoveOutput", "Check again: current output is $outputs") items(outputs.size) { index -> Row( ...........

Convert mutable 2D array of pairs to a static 2D array in kotlin How can I convert: mutableListOf To a: Array I'm pretty new in the language of Kotlin, I thought that I can loop for the entire 2D array and put the values in the new one, but I was wondering if there's another faster solution