How can I see the json generated from Ktor? I want to see the json result of the body but I have no idea how, I am recieving a 400 bad request and I am pretty sure the issue comes from "listOf(PostInvoiceResultInsideLineItems("API", 1, furiousInvoice.amount_inc_tax, "1", "FR_200"))" In the API, it needs something like this: "line_items": [ { "label": "API", "quantity": 1, "currency_amount": 2000, "unit": "1", "vat_rate":...

Spring boot: How to convert a 2 dimensional array of dynamic JavaScript Objects into Kotlin I am trying to send this JSON object to a Spring boot application in Kotlin. It is a 2 dimensional array of objects that each contain a key that is a string and a value that is an integer like so: [ [ { "-1": 272 }, { "2": 0 }, { "apple": -1 }, { "apple": -1 }...

How do I wait for a void function to finish executing before triggering a completable in Android? I'm very new to RxJava/RxAndroid and I'm very confused with how to achieve this workflow: Trigger void function Once it completes, provide some sort of callback to start a Completable function. I tried wrapping my void function in an Observable that emits a , but honestly I've no clue if that's the right thing to do. fun observableFoo(): Observable { return Observable.create { emitter -> emitter.onNext( voidFunction() ) } .subscribeOn(Schedulers.io())...

Android with Kotlin: How to filter DatabaseReference I want to filter a getReference according to the data that is saved in a field. I want it to return only the uid that have the "status" with a value of "1" my code is this for now, it is returning all the uid that are inside "empleados"

Getting a Value from the inside of a Coroutine outside of the Coroutine in Kotlin? I'm pretty new with kotlin programming and have to complete a tourguide project. I have a hopefully simple problem, but I'm too stupid to fix it I guess. In the following code segment I want to use the val "loc" (that's coming from the inside of a coroutine / addOnSuccessListener) as the "startlocation" that is currently set on "LatLng(49.7913, 9.9534)" outside the coroutine. But how do I get that value outside to the main thread? Sadly I can't just do "val startlocation = loc" :( Please,...

How to show the output after user input editText? I want to show output when user input something in the edit text. This is the code snippet submit.setOnClickListener { Toast.makeText(requireActivity(), "$username", Toast.LENGTH_LONG).show() } When I run it, it will appear as this image But when I change the "text:" into username and declaring var username = binding.text I will get this error None of the following functions can be...

Get Frame Rate of Android using Kotlin I am able to get the frame rate of the Android system using the following answer in Java: https://stackoverflow.com/a/8908035/4190159 However, being new to Kotlin I was wondering how can I get the frame rate of Android system using Kotlin code? (my app is using Kotlin instead of Java) The code as follows is not working for me: fun getFrameRate(): String { val timeElapsed1: android.os.SystemClock =...

Kotlin Singleton Class vs Normal Class I am new in kotlin and i read lots of documentation about singleton pattern and kotlin object declaration. I have some problems about singletons. Firstly, If singletons are beneficial for device memmory, Why is it used so little? How can we decide, we need to use singleton or not ? Why we need multiple instances exactly if singleton beneficial for memmory? If we don't need constructor can we use object all the times instead of class ? And lastly i have a class which is authenticating phone...

How to parse from map to object for Realm pls help me on this. i need to get the response from multiple item options however key is dynamic. I used Map but how can i convert it to object so that realm will accept it like this

var item_options: @WriteWith RealmList? = null,

this is my code val multiple_item_options: Map this is the response from api "multiple_item_options": { "151668": [ { "option_name": "Dipping Sauce",...

How to use lifecycle, livedata, and viewmodel with kotlin extensions deprecated This is my first time to learn & use kotlin programming to create an app, so I don't really know much about kotlin. I learn to use it from Indonesian app, called Skill Academy, but the subject regarding it uses kotlin extensions, which is now deprecated. I need your help and shares how to use lifecycle, livedata, and viewmodel using new viewbinding. Thank you

Comapring data class in Kotlin using == operator I am trying to write an assertion by comparing two Kotlin data classes.I am just simplifying the question by using a minimal class. data class X(val isThatSo: Boolean) { val name:String = "xyz" } In my test val s = """ { "isThatSo": "true", "name": "Ankit" } """ assert(Gson().fromJson(s, X::class.java) == X(true)) Looks to me that the name field is not compared at all because the value in both the objects is different. Is my understanding correct?

How to use `apply` in Kotlin when property and function have the same variable name data class Foo( val aaa: String, val bbb: String ) fun bar(aaa: String) { Foo().apply { aaa = aaa // this line gives error bbb = "bbb" } } IDE gives an error Val cannot be reassigned which suggests it's trying to reassign the function level aaa. how can I correctly use apply here to assign value of function level variable aaa to Foo's property aaa?

I had this problem to connect me to the main activity: Modifier 'override' is not applicable to 'local function' I have this problem to connect the menu to the main activity: Modifier 'override' is not applicable to 'local function' This is the main activity code: enter code heclass MainActivity : AppCompatActivity() { private lateinit var adapter: Adapter private lateinit var layoutManger:LinearLayoutManager override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) setContentView(R.layout.activity_main) layoutManger = LinearLayoutManager(this,...

Best way to securely cache data in a kotlin app? New-ish to Kotlin and building an app. I need some objects to be persistent data. Each of these objects will have a unique key. The objects will not take up a ton of memory and the cache size will probably rarely be over 10 of these objects, and most of the time just be 2 or 3 of these objects. I am wondering what is the best way to cache this data? I will encrypt the data but it must also be secure and only accessible by my app, i.e. not accessible by other apps on the phone or backed up by...

How to implement a validation code component I have to implement a validation code component where the user has to introduce a 4 digit code in 4 diferent edit text but I don't know how to start. Never have I seen an example of this and on the internet I can't find any example. This is what i want to implmenent: Any help would be a appreciated.

In GlanceAppWidget actionStartActivity is not calling in actionRunCallback inside onRun override function Component used: GlanceAppWidget Library & Version used: androidx.glance:glance-appwidget:1.0.0-alpha03 In the onClick of Button, we use actionRunCallback, inside the onRun override function we are trying to call actionStartActivity but it's not calling this actionStartActivity function. Issue Tracker : https://issuetracker.google.com/issues/238814668 <a href=""...

how can i retrieve the coordinates by searching the address name in the osmdroid map app I would like to add to my application an editText box to search for a point using the address, I would like to obtain the coordinates and then trace a path. how can i implement this? is there a tutorial to follow? subsequently I would like to be able to create a route starting from a predetermined starting point and setting a maximum distance that the route must have, can you help me?

How to set (programatically) Gone Margin in Constraint Layout? There is a use case where 4 views are connected vertically (named A,B,C,D respectively from top to bottom). When C is not visible then gone margin is set to 12dp resulting in a height of 16dp(12dp + 4dp RV item margin) from B. But when both B & C are gone then the gap between A & D is needed to be 24dp. The approach I'm using right now is programatically attaching D to the bottom of A & making margin as 24dp. Is there a way by which I...

how to fill the data class from xml file? Early data lay in the application.yml file, but it was necessary to move it into a separate file to solve a parallel problem. The question is how to specify the path to this data. I tried to change the path using PropertySource, but nothing really happened. Each time or data was taken from the same file or spring fell before it could start @ConstructorBinding @ConfigurationProperties(prefix = "merchant-connection") data class ConnectionsProfileProperties( val connectionProfiles: Map ) {...

Unable to start activity ComponentInfo to create tabMenu I´m trying to launch other activity in my app when i´m doing login in my app. This second activity have a tabMenu with a viewPager2 but when my app tray load this activity launch error: java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.citysportgym/com.example.citysportgym.ProfileActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'void androidx.viewpager2.widget.ViewPager2.setAdapter(androidx.recyclerview.widget.RecyclerView$Adapter)' on a...

Kotlin: setTheme not changing the theme colors How to change the theme by programmatically? Style true @android:color/transparent Manifest Activity class PetTransparentActivity : PetBaseActivity() { override fun onCreate(savedInstanceState: Bundle?) { if (missionArgs.isTransparent) { Log.d("Activity", "Transparent") setTheme(R.style.Pet_Theme_Transparent) } else { Log.d("Activity", "Not Transparent") setTheme(R.style.AppTheme_NoBar)...

Add Constraints to ConstraintLayout - Android Studio I've been trying to use constraints with a ConstraintLayout with an ID of card_details to position it on the screen, but the constraints are not working, and the IDE is not recommending them as available attributes as well. Here's the code I'm using. Here's how they look like: The highlighted item should be placed beneath the image with these...

Kotlin Flows/Channel Concurrency Processing Since coroutine flows are sequential performing long running operations in the collector/consumer will cause the execution time to be the sum of the long running operations. To overcome this behavior and execute the long running operation concurrently in the collector/consumer I was wondering if the following code is conformed with coroutines and structured concurrency and also bug free, since it help me achieve the required behavior: private suspend fun listenForResponses( channel:...

Error installing Kotlin plugin in eclipse. Can anyone help me out please? I have 2 more plugins, PyDev and jar files.

How to create the model from a dynamic api and pass it to Realmlist in kotlin need help. i have a dynmic API key as shown in pic. based on some solutions, i need to use map to handle dynamic. my issue is how to create the model for Realmlist as it is complaining on Map. pls help. already created model for single item: open class SingleMultipleOptions ( var key :String ?= null, var option_name:String?= null, var id:Long?= null, var item_price:Double?= null , var item_name:String?= null ) and this is for Map @SerializedName("multiple_item_options")...

Getting SHA256 digest of an APK programmatically android I have an installed APK on my device, and I am trying to get the SHA256 digest of the same. Manually, I do it like this: apksigner verify --print-certs path/to/apk.apk and use the SHA256 digest. But I need to do the same thing programmatically, by passing the package name of the APK, I get the SHA256 digest. Is there anyway I can achieve it?

Error importing a framework from Swift to Kotlin in Kotlin Multiplatform I have exported a framework that consists of two classes in Swift, I have used the @objc annotation. I am trying to import it to Kotlin now and I have created a .def file with the following structure: language = Objective-C package = platform.iOSWrapper modules = SingletonFramework and in my build.gradle I've put these two: iosX64() { compilations.getByName("main") { val DateTools by cinterops.creating { // Path to .def file...

Recycler view pagination in kotlin android development Want to show images from internal storage in android studio using recycler view, did that but now want to use pagination, can it be done using pagination? class TestingAdapter(var URI_String: ArrayList, var activity: Activity) : RecyclerView.Adapter() { override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder { val view: View = LayoutInflater.from(parent.context).inflate(R.layout.view, parent, false) return ViewHolder(view) } override fun onBindViewHolder(holder:...

Getting suggestion to use Java 8 library for Java 11 project inside Android Studio. Why? Inside build.gradle: compileOptions { sourceCompatibility JavaVersion.VERSION_11 targetCompatibility JavaVersion.VERSION_11 } kotlinOptions { jvmTarget = '11' } Code: implementation "androidx.lifecycle:lifecycle-viewmodel-ktx:$lifecycleVersion" implementation "androidx.lifecycle:lifecycle-livedata-ktx:$lifecycleVersion" kapt "androidx.lifecycle:lifecycle-compiler:$lifecycleVersion" Which line suggestion is coming: kapt...