Ktor 1.3.0-beta-1 multiplatform - SSL pinning for iOS in kotlin I'm using ktor-1.3.0-beta-1 I need to add few NSURLSessionDelegate checks for SSL Pinning. I need exactly the code I found here Ktor multiplatform - SSL pinning for iOS in kotlin, in a Multiplatform app I'm working on (I try to migrate some stuff from native APP to a Multiplatform library). I'm pretty new to Kotlin, so I don't have a full knowledge on how it works... I want to ask...

PlacePicker in Kotlin I am following https://github.com/AndroidCodility/PlacePickerAPI The issue is placepicker opens and closes suddently. I have found one of the answer on stackoverflow and also done as below : Enabled Places API in Google console. I have added Api key in AndroidManifest file as below : Is PlacePicker is deperecated? If yes, What might be the solution for this issue? Is there any support provided for...

How access the ViewModel inside an Activity using ViewModelProviders.of()? First of all this is not a duplicate question, I have tried all the other methods found here on SO but they didn't solve my problem. I'm having a problem with the ViewModelProviders. These are my codes. viewModel = ViewModelProviders.of(this).get(VideoPlayerViewModel::class.java) The 'this' is giving an error. Here's the error None of the following functions can be called with the arguments supplied. of(Fragment) defined in androidx.lifecycle.ViewModelProviders of(FragmentActivity)...

kotlin fragment error NullPointerException my complete code class BlankFragment : Fragment() { override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? { val rootView = inflater.inflate(R.layout.mainex, container, false) val groupAdapter = GroupAdapter().apply { spanCount = 2 } recycler_view.apply { //error NullPointerException in this line layoutManager = GridLayoutManager(rootView.context,...

Android Calender Design I have to implement calender of this design, searched many libraries but unable to find any exact design. Any library or custom solution will be appreciated.

error : "Attempt to invoke virtual method 'android.view.Window$Callback android.view.Window.getCallback()' on a null object reference" I have MainActivity, Adapter, ViewHolder etc. I am trying to change the value of textView inside activity_main2.xml file from ViewHolder. I call the function inside MainActivity from ViewHolder but giving this error. E/AndroidRuntime: FATAL EXCEPTION: main Process: com.soyut.su.epos01, PID: 18042 java.lang.NullPointerException: Attempt to invoke virtual method 'android.view.Window$Callback android.view.Window.getCallback()' on a null object reference at...

Entity with multiple members having same custom data type I'm having an Entity class Damage @Entity class Damage( @PrimaryKey(autoGenerate = true) var damageId: Int, var position: String, var place: DamageItem? = null, var cause: DamageItem? = null ) DamageItem is a regular POJO data class DamageItem( var itemId: String, var itemDesc: String) While trying to compile this code it is showing an error that Cannot figure out how to save this field into database. You can consider adding a type converter...

White Screen Appears While Switching Dialog Fragments I have a Fragment / Dialog Fragment hierarchy like this: At the base, there is main Fragment(lets call it A). And upon it, there is another DialogFragment(B) on which in some other cases another DialogFragment(C) appears. So when A and B are the only ones that are being shown, as expected, A is being shown as dimmed at the background and B is focused and bright at the front. Problem arises when C is also called. For a brief time -while B is becoming dimmer and going to background- a white...

Kotlin Native Dynamic Library Persistence We are looking to use a Dynamic Shared Kotlin Native lib in our project but there seems to be no way of storing on this layer. While it works with Expect Actuals in the MPP solutions it doesn't have the same effect when it comes to Shared Libs for business logic only, where there is no UI layer. We have tried multiple libs such as: Kissme, SQLDelight, Shared Preferences. None of the above seem to work and there is no example of how this can be achieved either other than an Interface...

TornadoFX - right way to instantiate decoupled controller? I have a controller which has no direct coupling to the view classes, i.e. it subscribes to events from the event bus, and nothing else. I'm arbitrarily creating it in the View class (by inject()), but it really doesn't need to be there. Is there a way to tell TornadoFX that it should be created otherwise?

IllegalStateException in Android. Exception copied from Play Store console When will be getting this error. This actually I have copied from console. It is something related tp LifeCycle. But I am not able to understand the issue java.lang.IllegalStateException: at h.a.a.a.a.c.b.d.Z.a (1) at androidx.lifecycle.LiveData.a at androidx.lifecycle.LiveData.b at c.m.q.a (1) at h.a.a.a.a.c.b.e.N.a (6) at h.a.a.a.a.a.f.run at android.os.Handler.handleCallback (Handler.java:751) at android.os.Handler.dispatchMessage (Handler.java:95) at...

Kotlin Annotation processor how to get constructor argument types? I'm writing an annotation processor in Kotlin and I want to get types of constructor arguments. Here is my annotated class @SomeAnnotation class MyClass(name: String, age: Int) Can I extract the String and the Int types from annotatedElement.kotlinMetadata? Or should I just use the annotatedElement which is a TypeElement? How can I do this? This is where I'm stucked: val metadata = annotatedElement.kotlinMetadata as KotlinClassMetadata val proto = metadata.data.classProto val...

A successful build is needed before the preview can be displayed android on Android studio 4.0 Canary I have tried to open the preview but can not open it. I have tried with the open studio again but can show the only preview with a blank white screen, can not show the content inside it. Then I open it again then showing the following content at a preview side. A successful build is needed before the preview can be displayed A Build process has been finished and tried to build multiple times but still showing the same error. I have used simple text inside it. @Composable fun...

refresh data in a Firestore Paging Adapter using Swipe Refresh Layout I am using FirestorePagingAdapter to show data in my app but when I use Swipe Refresh Layout did not work with FirestorePagingAdapter, swipe refresh layout.isVisible = true in LOAD_MORE when I don't scroll how to work with a Swipe Refresh Layout in FirestorePagingAdapter? ViewHolde.class: class ViewHolde(item: View) : RecyclerView.ViewHolder(item){ val username = item.findViewById(R.id.iduser) as TextView val title = item.findViewById(R.id.idtitle) as TextView...

Cancelling an event in Functional reactive programming I just started looking at Functional reactive programming. It is very impressive and I would like to use this style in Android development. I recently watched video for reference and I am stuck at handling the scenario similar to the following, Let's say there is a pure function X (combination of pure functions) which listens request stream, makes a network call and heavy JSON parsing and emits the...

Get singleton object via companion using reflection and class name As the title stands, I want to get a singleton instance via reflection using the class name. Let's say I have this class: abstract class MyClass : BaseClass() { abstract fun getExampleObject() : ExampleObject companion object { @Volatile private var INSTANCE: MyClass? = null fun getInstance(context: Context): MyClass { return INSTANCE ?: synchronized(this) { val instance = Base.myBuilder(context.applicationContext,...

No Activity found to handle Intent error with valid url I have this small method: private fun showWebsiteWithUrl(url: String) { val i = Intent(Intent.ACTION_VIEW) i.data = Uri.parse(url) startActivity(i) } And I see in google play that sometimes this method throw android.content.ActivityNotFoundException exception. The url parameter is a valid url like this: http://www.stackoverflow.com/ This is the beginning of the stacktrace: Caused by android.content.ActivityNotFoundException: No...

Using android kotlin - problem with random number display + delay I am using kotlin in Android Studio. I am writing a simple program to display a series of random numbers with a delay of 1 second between each one. RandNumText is the name of the on screebn box. I have tried the following :- enter code herei=1 enter code herewhile (i

Why does Kotlin data class objects have backticks? This is my data class created using a Kotlin data class creator Plugin. data class ResponseHealthInisghts( val `data`: List, val message: String, val statusCode: Int ) This code gets work even if I remove the backticks, I wonder if it's for Java interoperability. But this variable is not a keyword but also it has backticks. why?

Comparison Networking libraries: Retrofit and Fuel (in context to kotlin) Personally i am using Retrofit but while surfing through some articles i am found library Fuel (this) which is developed in kotlin. There is Two question i have in my mind (too much surf to compare this two lib but no luck:( ) 1) Performance wise which one is better 2) Which one is easy-to-use

How to convert base64 string into image in kotlin android I have a Base64 String that represents a BitMap image. I need to transform that String into a BitMap image again to use it on a ImageView in my Android app How to do it?

Having trouble with Volley, JSONArrays and Kotlin What is the correct way to do this with Volley? Rest of the code can be found here: https://gist.github.com/samip5/3a42aa3cdf7d82a543b618d2dda88b4a It keeps crashing in the for loop with this tracktrace: E/AndroidRuntime: FATAL EXCEPTION: main Process: fi.samipsolutions.voitracker, PID: 9573 java.lang.RuntimeException: java.lang.reflect.InvocationTargetException at...

How to add dependencies to tests of another project in a multi-platform multi-project Kotlin build I have a multi-platform Kotlin project, which contains multiple modules (subprojects). The Building Multiplatform Projects with Gradle documentation of Kotlin clearly shows how to set up project dependencies between modules: kotlin { sourceSets { commonMain { dependencies { // All of the compilations that include source set 'commonMain'...

Passing String Data using Nav controller from Parent Activity class to Child Fragment So I want to pass data from my navigation activity class to the child fragment class but the value is not been passed, please what am I doing wrong. am Passing my value using Bundle /**sender class @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_menu); Toolbar toolbar = findViewById(R.id.toolbar); setSupportActionBar(toolbar); DrawerLayout drawer = findViewById(R.id.drawer_layout);...

Nullable vs Option Since Kotlin provides nullable and non-nullable types, is Optional/Maybe still useful? For example Arrow's Option.

How to change backgroud color BlockQuotes in Android TextViews? I parse html from website and i use textview.Html.fromHtml(text)) and text in tag always background white same as textview background. How to change color background .

Android Q - Get depth map from portrait mode photos I'm trying to build a sample Android App to extract the depth map of portrait mode photos taken with the google camera app. I know that it's saved along the blurred photos. I read the Dynamic Depth Format documentation coming from Google : https://developer.android.com/training/camera2/Dynamic-depth-v1.0.pdf It's pretty new and I don't find any resource related to this subject or how...

Implementing Update to kotlin data class I'm new to Kotlin and i want to build a data class update. my data-class represents a DB document and i need to implement CRUD for it. so Creating, Reading & Deleting is easy. but how about updating? i have class : data class RecordType(val id: String, val name: String, val description: String, val values: Array, var companyId : String? = ""); my controller sends to my service layer the update object: data class UpdateRecordTypeRequestModel (@NotEmpty val id: String,...

Moving code from fragment to Activity so it is available in 2 fragments I have app where i navigate through fragments using Navigation Architecture components. In 1. fragment I am creating bluetooth connection but I need to use it in second fragment. I understand that I need to create connection in Main activity instead of fragment, but I can't find out how and where should I move my code from fragment. This is the code from fragment I need to move override fun onViewCreated(view: View, savedInstanceState: Bundle?) { // Register for broadcasts when a...

Room & Retrofit : List<Object> Id'like to save my News in a Room Database. I know how to do it when the data on the Response is List of News but not when it's a NewsList which contains a list of News. Here is my code : My API Get function : @GET("other/club.json") suspend fun getListNews(): Response My model : data class NewsList( @SerializedName(value = "news") val news: List) @Entity(tableName = "news_table") data class News( @PrimaryKey(autoGenerate = false) @SerializedName(value = "id") var id: Int,...