getParcelable in kotlin not parsing to model object correctly Android I use @Parcelize to make data class Parcelable like @Parcelize data class QuestionBO(val title: String, val options: List, val correctOptionIndex: Int, val dateCreated: Date, val tags: List, val questionType: Int, val userID: String, val userName: String, val totalLikes: Int, val imageUrl: String) : Parcelable { constructor() : this("", emptyList(), 1, Date(), emptyList(), 3, "" , "", 34, "") } And calling...

Using uuid[] type in Postgres with kotlin and hibernate I'm pretty new to Kotlin and whole JVM world and I'm trying to figure out how should I use that type. I was trying to implement it as mentioned in this tutorial: https://medium.com/@sajithvijesekar/spring-jpa-data-with-postgres-array-types-a6cc4be421e2 but as a result I received: No Dialect mapping for JDBC type: 2003 during app startup. I wanted to use that field...

Get characteristic gatt from Notification I'm using RxAndroidBle with kotlin. So far I couls set multiple notifications and i'm receiving them. How can i map the notification to it's specific characteristic? So far: enter code here connectionObserver .flatMap { rxBleConnection -> rxBleConnection.discoverServices().flatMap { services -> services.getService(ServiceUUID).map(BluetoothGattService::getCharacteristics) } .flatMapObservable { s -> fromIterable(s) }...

Java Interface Objects in Kotlin Consider I have an interface like the one below: interface JSONObjectRequestListener { fun onSuccess() fun onFailure() } Now I have a method in my MainActivity: fun onRequestHappen(listener: JSONObjectRequestListener) If this were java, I would have passed this object as: onRequestHappen(new JSONObjectRequestListener() { @Override public void onResponse() { // do anything with response } @Override public void onError() { // handle error...

Shared element transition in Jetpack Navigation from RecyclerView to Detail Fragment I'm trying to make a transition with simple animation of shared element between Fragments. In the first fragment I have elements in RecyclerView, in second - exactly the same element (defined in separate xml layout, in the list elements are also of this type) on top and details in the rest of the view. I'm giving various transitionNames for all elements in bindViewHolder and in onCreateView of target fragment I'm reading them and set them to element I want make transition. Anyway animation is...

Kotlin JS: How to implement jquery in my project I'm trying to use the lib jquery from kotlin js: jq("root").html("ddddddd") But he is deprecated and does not work Warning:(8, 9) Kotlin: 'jq(String): JQuery' is deprecated. JQuery is going to be removed from the standard library Is there any other alternative to install jquery and how?

Kotlin equivalent of Scala Traversable.collect Is there an equivalent in Kotlin for Scala's Traversable.collect function? Specifically, I would like to map a List to a List, but only if that can succeed. myList.map { val myNullableThing = it.someNullableMethod() // If it is null, then I cannot continue here // and I want to simply ignore this item }

Kotlin - does IntelliJ have a GUI builder like it does for Java? Title says it all. I'd prefer to use TornadoFX over Swing since TornadoFX is built for Kotlin

Fatal exception: Could not get input device information I have just received a strange crash logs on my Fabric and have no idea how to deal with it. It looks like that: Fatal Exception: java.lang.RuntimeException: Could not get input device information. at android.hardware.input.InputManager.getInputDevice(InputManager.java:216) at android.view.KeyCharacterMap.load(KeyCharacterMap.java:334) at android.view.KeyEvent.getKeyCharacterMap(KeyEvent.java:2472) at android.view.KeyEvent.getUnicodeChar(KeyEvent.java:2529)...

Kotlin android extensions in custom view with databinding I have a Custom Linear layout and an xml file in which I have 3 checkboxes. The Custom linear layout looks roughly like this: class AdvancedBox : LinearLayout, DefineExchangesDialog.DefineExchangesDialogListener { private lateinit var mBinding: AdvancedBoxBinding private lateinit var viewModel: GlobalConfigViewModel constructor(c: Context) : super(c) { initLayout() } constructor(c: Context, a: AttributeSet) : super(c, a) { initLayout() }...

WorkManager alpha10 ListenableFuture usage I´m having some issues trying to implement the latest WorkManager-alpha10 ListenableFuture for handling process completion. Right now I´ve the following on my JobOrganizer class private fun enqueueDownloadWork(): ListenableFuture { val work = WorkManager.getInstance() .beginWith(dwdTypologiesJob) .then(dwdElementsJob) .then(dwdAnomaliesJob) return work.enqueue() } private fun createDownloadWorkRequests() {...

How to build a monitor with infinite loop? I am building a monitor in Kotlin to schedule certain operations, what I want is a program that inserts or updates some database entries for a given time intervall. What I got so far is a program that runs for a given time span, but I have an infinite loop in my porgram that takes up to 30% of processor power when it is not time for an update. So my question is how to build a monitor without an infinite loop? this my code so far: while(!operations.done &&...

Show combobox's items as a custom node in tornadofx When use a node to show combobox's items only display the fisrt item I select. val sspSelected = SimpleStringProperty() val myItems = FXCollections.observableArrayList("Item 1", "Item 2","Item 3") combobox(sspSelected){ items = myItems cellFormat { graphic = cache{ label(it) } } } label(sspSelected) <a href=""...

java compiler in Android studio 3.2 and 3.3 canary 13 shows a lot of warning When updating Android studio, after built many warning are shown, and I couldn't ignore them, I tried to resolve them but I didn't find any way, so is there any solution and what should I update? Android Studio 3.2 gralde plugin version : classpath 'com.android.tools.buildG3.3.0-alpha13' app.gradle apply plugin: 'com.android.application' apply plugin: 'kotlin-android' apply plugin: 'kotlin-android-extensions' apply plugin: 'io.fabric' apply plugin: 'kotlin-kapt' log...

how to get informations from a google drive folder? I want to get information about pdf files on a sharing folder like this one which contain tow pdf files i want to get the name of each file and the link ( and a picture of the first page if it's possible ). I'm using Kotlin for this.I don't know what i must to use i hear about the Google Drive Api but i think i don't need to login or connect to get this informations i found this fun but...

Read JSON file to Object Kotlin How can I read JSON file and then put this into objects define in @Document - model for MongoDB. I'm looking for something like jackson object mapper in Java. It doesn't work here becouse Documen - model don't have empty constructor. @Document(collection = "XXX") class Room(@Id private val id: String?, private val name: String){there is toString() method}

SocketChannel.read ( ) got correct data only once and blank To test sending data with SocketChannel: My Java app uses SocketChannel.write ( ) to keep sending same data repeatedly with a random short delay. Checking the cmdline log, the data is always sent correctly. |2018|0|null|null|0|....000000|0.000000| |2018|0|null|null|0|....000000|0.000000| |2018|0|null|null|0|....000000|0.000000| |2018|0|null|null|0|....000000|0.000000| |2018|0|null|null|0|....000000|0.000000| My Kotlin app receives the data with SocketChannel.read ( ), and print the logs a...

Share common authentication token between web and app I would like to create a website and app where users can search a song and collect it into a public list (saved to a database). Therefore, I would not like to let the user authenticate himself just to add 1 song to the list. Because you need to provide a token in order to search, I've found several options: I will save the token into the database (refresh every hour using a CRON job), and when the user wants to search, I will retrieve the code and append it client side so the request will...

Throttle or Limit Kotlin CoRoutine count I am trying to hit an http service from my coroutine. I might have to hit the service a million times, but I don't want to DOS that service. I want to throttle my coroutine (some kind of back pressure) I know I can batch the requests to acceptable concurrent number of requests. But, that's too boilerplate I think. Is there any http library out there handles this in an idiomatic way

How would i use Kotlin MultiPlatform with spring So I have a project with a module structure of -common -common-js -common-jvm -server (Kotlin/SpringBoot/Hibernate) -web(KotlinJS/React) I want to have my models shared but on the server module, I need the annotations for hibernate. What would be a good strategy? Should I take the annotations out and wrap the entity in a class that uses them? @Entity @Table(uniqueConstraints = [UniqueConstraint(columnNames = arrayOf("isbn"))]) data class Book( @NotBlank @Size(max = 249)...

Android Studio Custom Adapter out of bound exception While coding an android app in Kotlin I cam across this error: I am using the OpenWeatherMapApi and from the API I am trying to grab the Forecast Data. And I was able to pull the Forecast data thanks to okhttp3 and Gson but now my issue is displaying that data. I created and a new class for a custom ArrayAdapter where I try to display in my...

Get value from shared preferences in first time is not working I save the device token in shared preferences and I only manage to get it on the second run. This is the code: class PreferencesHelper(context: Context) { companion object { private val usernameKey = "username_key" private val passKey = "pass_key" private val tokenKey = "token_key" } private val preferences = PreferenceManager.getDefaultSharedPreferences(context) var username = preferences.getString(usernameKey, "") set(value) = preferences.edit().putString(usernameKey,...

Prevent String.Contains from matching empty I'm running a filter command on an object in kotlin and trying to match results. I didn't realize until today that an empty string will match any string in a contains query as follows: var brandname = "" var brandtofind = "tide" var result = brandtofind.contains(brandname) //results in true This is problematic when you are trying to match entries where a string can be empty as follows: var candidates = this.filter{ product -> text.contains(product.name) ||...

Varible from a Previous activity is null I am trying to pass a value from Activity 3 to Activity 2 but I am getting null Value. If I click Back button its going to previous Activity but value is null. Activity:3 TestMenuDetail: val navBarTitle2=intent.getStringExtra(TestMenuViewHolder.TEST_TITLE_NAME) val TestVar=Intent(this@TestMenuDetail,TestMenuList::class.java) intent.putExtra("TestVar2",navBarTitle2) println("Test Value $navBarTitle2")//Test Value Hello Activity:2 TestMenuList:...

Java class that extends Kotlin base class cannot call internal methods of base I am experimenting with Kotlin on Android, with Android Studio, mixing it with some existing Java code, and I've come across a problem. I have a base class in Kotlin with a single method marked as internal: package com.example.kotlin.hellokotlin open class KotlinBaseClass { internal fun doSomething() { println("Done something!") } } I then create a Kotlin class that extends KotlinBaseClass and calls the base class method: package com.example.kotlin.hellokotlin class...

Kotlin EditText key listener only works in emulator I have a key listener on an editText element. The listener only fires in the emulator but not my device. Here is my onCreate: override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) setContentView(R.layout.activity_main) val editText = EditText(this) mainLayout.addView(editText) editText.setOnKeyListener(View.OnKeyListener { v, keyCode, event -> println("KEY PRESSED: " + keyCode) false }) }

Android kotlin - receive multidimensional array / json with loopj AsyncHttpClient I try to receive multidimensional array / json and the code looks like this: val client = AsyncHttpClient() client.get("http://www.xxxxx.com/getjson.php", params, object : JsonHttpResponseHandler() { override fun onSuccess(statusCode: Int, headers: Array?, response: JSONObject?) { Log.d("letsSee", "look: " + response!!.toString()) } override fun onFailure(statusCode: Int, headers: Array?, e: Throwable, response: JSONObject?) { Log.d("letsSee", "FAIL: " +...

How to get icons from OpenWeatherMap onto Screen So I am using the OpenWeatherMap Api to create a sun spotter app, so the issue I have right now is that, I have all the icons in my drawable folder, the issue is I want to display all the icons right now I have ti set up like this: I am using that hard coded icon as a placeholder but I want all the other icons to show, my issue is how do I do...

Cannot access var object of inner class in kotlin I am trying to write a RecyclerView adapter class in Kotlin for android. I am trying to use the traditional way of creating a custom viewer class, for custom objects, and use a click listener in that. While I am able to do rest of the things like access the variables of inner class and show the RecyclerView, what I have not been able to do is add click listener to the var objects of inner class. ie something like var convertView : View? = itemView convertView.setOnClickListener(this)...

Type mismatch found while using Generic in Kotlin I am converting this code to kotlin where abstract class BaseModel(){ } BaseViewHolder abstract class BaseViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView){ abstract fun bindData(data: T) } BaseAdapter abstract class BaseAdapter(var items: List) : RecyclerView.Adapter() { override fun onCreateViewHolder(p0: ViewGroup, p1: Int): U { }...