I want to implement semi circular (arc shape) progress bar with text in between and button at end as shown in given link I want to implement semi circular (arc shape) progress bar with text in between and button at end. I want to make arc shape progress bar, as shown in pic. It contains text at between and 2 button's at bottom (in glass shape). I have tried using "SeekArc Library." and "lzyzsd:circleprogress" but its not giving me any...

Configuring Undertow RequestEncodingHandler in Spring Boot I am trying to enable request decompressing (gzip) in Undertow. In the documentation its specified that this is handled by RequestEncodingHandler. I have created following component in Spring config @Component class UndertowWebServerCustomizer : WebServerFactoryCustomizer { override fun customize(factory: UndertowServletWebServerFactory) { factory.addDeploymentInfoCustomizers( UndertowDeploymentInfoCustomizer { deploymentInfo ->...

find ALL rows in a table, even if you have to scroll down in the table I'm trying to write a UI test for the Vaadin 8 tutorial application that will count the rows in a table. Using Selenide and CSS selectors for the test. The table is scrollable and created like so: override fun init(vaadinRequest: VaadinRequest) { layout = VerticalLayout() grid = Grid(Customer::class.java) grid.id = "table.customers" grid.setColumns("firstName","lastName","email") layout.addComponents(grid) populateGrid() this.content = layout } private fun...

Kotlin use class string var in annotation value? I use a annotation in my class, in class it has a string val, in annotation i want use this string, get a error @Product(code = Test.CODE, name = "product") class Test : Product { val CODE = "test.xxx.xxx.xxx.xxx.xxx" I got error 'Unresolved reference: CODE', how can i do

Swift equivalent Type in Kotlin I'm an Android developer and I don't have much exposure in Swift orKotlin. Recently I'm working with a Socket.Io client (Mirroring the existing iOS app) and found the snippet. // swift code snippet socket.emit("joinRoom", ["room": roomName]) Question: How can I represent the above line of code in kotlin especially the second parameter (["room": roomName]) More clearly: What kind of data type can be use to represent the second parameter. // Server Implementation...

How can I send a post request with Retrofit? I'm trying to send post request with Retrofit but server response an error 400: Bad Request. BaseURL : http://taskdemoserver.pythonanywhere.com This is a screenshot of server documentation. This is the Retrofit Interface. package com.e.databaseapp import retrofit2.Call import retrofit2.http.* interface Service...

Transform data class to map kotlin My problem is that I need to transform a data class in kotlin to a map, because I need to work with this structure as a requirement. My data class is the next (Podcast): data class PodCast(val id: String, val type: String, val items: List, val header: Header, val cellType:String? = "") data class Item(val type: String, val parentId: String, val parentType: String, val id: String, val action: Action, val isNew: Boolean) data class Header(val color: String, val label: String) data class...

How to pass bytes from Swift (iOS) to Kotlin common module? To share a implementation of a protocol between an android and iOS app I am experimenting with Kotlin Multiplatform. I set up a basic multiplatform project as described here. It defines common code in the shared module ... fun createApplicationScreenMessage() : String { return "Kotlin Rocks on ${platformName()}" } ... which can be used in an iOS Project...

ConstraintLayout, move a LinearLayout up (negatively) I'm migrating some projects to AndroidX with Kotlin. I'm having some issues with ConstraintLayout, I already know that, according to the documentation: Negative margins will not be supported in ConstraintLayout. [...] But I have the following situation: I need to move up in 5dp the LinearLayout, however I need the height to continue to match the lower limit of the screen. That is, I move up 5dp and...

Kotlin: Constructor when using parcelize I am creating a small testapp to learn the kotlin way, but I have some problems with the Parcelable parameters. I have created a abstract class: abstract class Goal(var number: Int, var name: String) : Parcelable Now I am trying to extend this class with a new class, but I have al sorts of construction problems: @Parcelize class OperationalGoal(number: Int, name: String, var description: String) : Goal(number, name) It is complaining about both number and name, that I need to add val...

How to use keywords (for or this or in ...) as variable or function name? some times i must to named the function or variable names as (for and in and this) but these keywords not enable. Example: val val :Int = 2019 // Error name.

Android/Kotlin: How to create a class that uses a DBLocal class? Error message: Type mismatch require context I would like to create a general DB class that manage a local DB and another DB. I have a mistake, but I don't understand what is the problem... General class: class DBHandler { companion object { val sharedInstance = DBHandler() //gérer si sharedinstance est null pour éviter pb d'ecriture } fun methodToSelectData(strQuery: String, dataBase: String)/*, completion: @escaping (_ result:*/ { print(message = strQuery) val dbLocal = DBLocal(this,...

How to recognize rotation gesture with ARcore scene (non AR)? I want to rotate rendered objects in non AR scene. TransformableNode only permit me to rotate nodes horizontally, but I want to rotate them on the Y and Z axis. I have a SceneView in my layout and I set an ontouchlistener on his scene to manage gesture. How can I manage these gestures? Thanks a lot private fun addNode(model: ModelRenderable?){ val ts = TransformationSystem(resources.displayMetrics, FootprintSelectionVisualizer()) model.let { node = TransformableNode(ts)...

Why CheckBox checked not working with Kotlin programmatically? I think this question may be asked before but this issue happened with me too so , I'm asking here again to see we can get some solution over it. So basically problem is making Checkbox checked Programmatically not working with Kotlin code . To explain , I'm sharing my code & screenshot of problem. //filterContraints is ArrayList type if(filterContraints!!.size > 0){ filterContraints!!.forEach { Log.d(TAG, "For each filter constraints : $it") if(it ==...

create a file extension only my app can read I want to protect my images through a file format and/or extension so that only my app can read it. For example .tir audio in TUNEIN radio whose audio only the app can play.

Kotlin compiler reports that "no method 'equals(Any?): Boolean available" with Spring's TypeDescriptor The Kotlin compiler is reporting an error when performing an equality check on two instances of Spring's TypeDescriptor. For example, import org.springframework.core.convert.TypeDescriptor fun foo(a: TypeDescriptor, b: TypeDescriptor) = a == b fails to compile with the error message No method 'equals(Any?): Boolean' available. TypeDescriptor does override the equals method, and replacing the == operator with a.equals(b) works. I am using Kotlin version 1.3.21.

The first time an exception is thown, instead of crashing, another fragment is displayed When an exception is thrown for the first time instead of crashing the application and showing the stack trace, while running in an emulator, another fragment of my application replaces the current one. If I retrace the steps that occurred a second time after restarting the application the expected result is obtained. I should point out that this doesn't happen in any particular part of my code. Anywhere an exception is thrown and not handled will trigger this behavior. Doesn't matter if...

SimpleXmlConverterFactory and IllegalArgumentException: Unable to create converter for retrofit2.Call<java.util.Currency> Recently I had a task to process the answer in xml format. I tried to solve the problem using retrofit and SimpleXmlConverterFactory. Please tell me how to solve the problem or which alternative to use. class App : Application() { lateinit var api : Api override fun onCreate() { super.onCreate() val retrofit = Retrofit.Builder() .baseUrl("http://www.nbrb.by/Services/") .addConverterFactory(SimpleXmlConverterFactory.create())...

How to grouping item cart by shop_id using RecyclerView in Kotlin Okey, I have list item in Cart Activity (using RecyclerView). My purpose is to separate items based on shop_id so users can process payment once when there is an item that has the same shop_id. I have googled and I have read a solution using getItemViewType, but I have no idea because in my case, shop_id is dynamic. This is the illustration: item A item F (here button process item A and F) item D (here button process item D) item B item E item C (here button process item B,E and C)...

Singleton usage creates memory leak in kotlin Trying to use Singleton class in another Singleton, but somehow it gives me memory leaks. How could i improve it? Here is my example singleton implementation class FirstSingletonClass(val context: Context) { companion object { @Volatile private var instance: FirstSingletonClass? = null fun getInstance(context: Context): FirstSingletonClass = instance ?: synchronized(this) { instance ?: FirstSingletonClass(context).also {...

Can't use FirebaseUI with fragments I'm trying to implement FirebaseAuth UI to my app, but I've ran into some issues. I'm trying to create the FirebaseUIActivity.kt as a fragment but when I call the support fragment manager supportFragmentManager.beginTransaction().replace(R.id.fragment_container, FirebaseUIActivity.newInstance()).commit() it crashes. here is some code: MainActivity.kt class MainActivity : AppCompatActivity() { private lateinit var binding: ActivityMainBinding override fun...

How to use format method in String and Int variable? If i want to show specific text or number makes sense to use some method like format ,but how to use it ??

Android - Locale Changer I am experiencing a weird behavior about changing Locale. Everything was working fine for every Android API levels. Trying to change the Locale of my app but it is not working anymore. Everything seems to works fine when setting new Locale -> AttachBaseContext -> Recreate Activity, but in the ends i see only strings from English. What recommendations do you give or this may be something wrong with latest Android Studio 3.5 Canary 9 ?

Kotlin Library Exported As Jar Usable In Java Code, But Not In Kotlin Code I've written a utility library for a project I am working on in Kotlin. The project has a number of dependencies (such as AWS libraries). I want to package the library as a 'fat' .jar so that I can use the library in other projects without issue. Currently, I am using the gradle shadow plugin. I am able to successfully use the .jar classes in Java code/projects without issue. However, when using the .jar classes in Kotlin projects/code (or attempting to) I am facing visibility issues (code...

Intermittent connectivity - Could not connect: java.io.IOException: read failed, socket might closed or timeout, read ret: -1 I have a simple app that communicates to a Bluetooth server over the rfcomm protocol. I'm able to make connections just fine sometimes, but often I start the app and receive the following error. I have no idea where to start in terms of discovering what may be causing the problem because, as I said, it actually works from time to time. Logcat: D/CONNECTTHREAD: Could not connect: java.io.IOException: read failed, socket might closed or timeout, read ret: -1 D/BluetoothSocket: close() this:...

Firebase Realtime query for multiple keys/values I have a database that looks like this: I want to order "points" and "size" so that, for example, guilds with most points using the following code: rootRef.child("displayGuilds") .orderByChild("points") and guilds with size greater or equal to "3" with the following code: rootRef.child("displayGuilds") .orderByChild("size") .startAt(3.toDouble()) But I can't figure out how to achieve both of these...

Android get LiveData from Retrofit call I'm trying to fetch some data with Retrofit on my Android project update this on the ViewModel and my activity with LiveData. Here is my service Class: class PaymentService { private var paymentMethodList = ArrayList() private val paymentMethodListLiveData = MutableLiveData() init { paymentMethodListLiveData.value = paymentMethodList } fun fetchPaymentMethods() { val retrofit = Retrofit.Builder()...

How to make hide input like password in kotlin code? I wanna to know how to make hide input text like password input when run the kotlin code in terminal ? I have code: Println("Username:") val user= readLine()!!.toString() Println("Password:") val pass= readLine()!!.toString() Print out: Username:myname Password:mypassword But i wanna: Username:myname Password:********

Android studio is not able to resolve import I am trying to work on a sample project to learn MvRx. However, seems something is wrong. Android Studio is not able to find and import activityViewModel automatically. 1) I tried to import it manually by writing its package name but it is still gray. 2) From Gradle tab, I selected my root project and clicked on Refresh Gradle Project in order to refresh all dependencies. It did not help, too. What is the problem?...

Android Q results in a series of "Unresolved reference:" errors for new classes When compiling this app in Android Studio Canary 10 I get a series of those errors. Presumably it is compiling against the wrong SDK, but it says android-Q in the gradle. Any tips?