lateinit property ABC has not been initialized After clicking button I've implemented in recyclerView belongs to activity_main.xml (MainActivity class), which work is to switch activities (MainActivity -> EmployeeActivity), it shows a problem below. I would be grateful for every tips. Error: E/AndroidRuntime: FATAL EXCEPTION: main Process: com.example.ing, PID: 31027 kotlin.UninitializedPropertyAccessException: lateinit property context has not been initialized at...

Create file from MIME message I want to create files from the attachments of a multipart mime message. I can retrieve the information I need and also the creation itself is not a problem. what I struggle is that with the given headers and bodies I am not sure what encoding should be used to create the files. Let's say we have to attachments: //HEADER Content-Type: application/pdf; name="somepdf.pdf" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="somepdf.pdf" //BODY...

Use LocalDateTime in Micronaut Kotlin Data Class DTO I got this DTO: @Introspected data class SomeDTO( val someLocalDateTime: LocalDateTime, val someString: String ) And I want to use it in a Micronaut Controller like this: @Post @Status(HttpStatus.CREATED) fun somePostCall( someDTO: SomeDTO, authentication: Authentication ) { this.someMethodCall( someDTO.someString, someDTO.someLocalDateTime, authentication.name ) } I'm getting always this error: Required argument [SomeDTO...

Usage of Criteria Builder with not in on joined field I have a Hotel entity & HotelReservation entity. I try to fetch available Hotels to make a reservation. Idea: Fetch All Hotels and remove which are not available. (Hotel is not available if it's reserved in a certain time - in function there are parameters from -> to) fun availableHotelsBetweenDates(from: ZonedDateTime, to: ZonedDateTime): Specification = Specification { root, query, cb -> val reservationsBetweenDates: Subquery = query.subquery(HotelReservation::class.java) val...

Problems testing spring webflux Webclient with high load I am trying to learn Spring Webflux comming from C# and NetCore, we have a very similar problem like this post, where a third party service provider has some response time problems. But testing with spring-webclient is doubling the response time, I do not know if I am missing something I tried to create a similar example with: A computer running 3 servers...

No property customize found for type with QuerydslBinderCustomizer in Kotlin I have a CRUD app, created with Spring REST data in Kotlin. @Repository interface OrderRepository : PagingAndSortingRepository, QuerydslPredicateExecutor, QuerydslBinderCustomizer { override fun customize(bindings: QuerydslBindings, root: QOrder) { bindings.bind(root.address.name) .first(StringExpression::containsIgnoreCase) } } I have customized my QuerydslPredicateExecutor, as per some examples, when I run the above application, I get an initialization...

Hello, what I need is a valueEventListener () that will always run in the background on android. I will be glad if you help. :) I tried to use the service, but I keep getting errors. I have no one but you to ask questions. :(

Type 'State<List<User>?>' has no method 'getValue(Nothing?, KProperty<*>)' and thus it cannot serve as a delegate I'm trying to get a value from LiveData with observeAsState in jetpack compose, but I get a weird error Type 'State' has no method 'getValue(Nothing?, KProperty)' and thus it cannot serve as a delegate Code @Composable fun UserScreen(userViewModel:UserViewModel){ val items: List by userViewModel.fetchUserList.observeAsState() UserList(userList = items) } ViewModel class UserViewModel: ViewModel() {...

Firebase search users for multiple fields I have this function that searches an firebase realtime database for the users username and shows the closet matches in a recycler view. everything works well: private fun searchForUsers(str:String){ var firebaseUserID = FirebaseAuth.getInstance().currentUser!!.uid val queryUsers = FirebaseDatabase.getInstance().reference.child("Users").orderByChild("username").startAt(str).endAt(str + "\uff8f" ) queryUsers.addValueEventListener(object : ValueEventListener{ override fun...

Best Practice Safe Args Navigation with Hilt I'm currently using Hilt in an app for the first time and have a question regarding the Jetpack Navigation Component. Usually, I'm using the NavController + SafeArgs to navigate between my fragments (hosted in single activity). However, this is not working when using Hilt - xxxxFragmentDirections are never found. I have found no documentation how to deal with navigating with safe args when using Hilt. Can someone please share an example / point me in the right direction? All I've found so far...

No view hierarchy match found in instrumented tests When I run all the tests in a class, I end up with view hierarchy issues, seems like android is slow in drawing UI views. androidx.test.espresso.NoMatchingViewException: No views in hierarchy found matching: with id: com.company.android.employeeadmin:id/save I run this small test in isolation and suddenly the test passes. onView(withId(R.id.fab)).perform(click()) onView(withId(R.id.save)).perform(click()) The button exists in the hierarchy all the time and is never hidden or removed. I'm...

ViewPager2: Listen for setCurrentItem() completion I recently upgraded my app to use ViewPager2. When the user taps the finish-early button I call this code. setCurrentItem(myLastPageIndex, false) doSomeWork() The doSomeWork() function enables the circular progress bar on the last page. The thing is that when I call doSomeWork() the page isn't displayed yet and I get an exception because I'm trying to update a View that doesn't exist yet, createFragment() is called after doSomeWork() This used to work perfectly with the old ViewPager, is...

How to encode a ByteArray to a base36 String To encode a ByteArray to Base64 I could simply use Base64 from java.util. But now I need to change my code to create base36 instead. Unfortunately java.util doesn't have this functionality. What I need is a function/method that takes a ByteArray and outputs a String containing a base36 representation of it. No other changes like cutting off leading zeroes. So this other question looks similar but we're are 2 problems. First the question got edited so that I don't understand the answer....

Exception when trying to upgrade to Kotlin 4.1.10 in Android Studio I'm trying to upgrade to Kotlin 4.1 in our Android project but it's throwing an obscure error in the kaptDebugKotlin step. Everything runs fine on kotlin version 1.3.72 I'm using: classpath "com.android.tools.buildG4.0.1 classpath "org.jetbrains.kotlinkotlin gradle plugin4.1.10" Here's the stacktrace from ./gradlew assebleDebug --stacktrace org.gradle.api.tasks.TaskExecutionException: Execution failed for task 'appkaptDebugKotlin'. at...

Wiremock : Match String Request I am having trouble matching following string request using wiremock stub.I am not able find any examples where the request is of type string.Below is my following string request which was build to call graphql query. Request: { graphQLRequest( firstName: "JOHN", lastName: "DOE", ) { email fullname } } Any help would be appreciated

how to print text in several lines using cpcl language? I want to print a dynamic text using zq620 or qln320, the size can change, in the tests I have been doing, if the text does not fit on the ticket, it is printed on the same line. I checked the manual but did not find an instruction for the text to print on different lines automatically. I'm thinking of checking the size of the text, if it exceeds the width to make a substring so that the rest of the text is printed in a new line, I would like to know if there is a different way to do it?...

How can I write a onPrepareOptionsMenu for a PopupMenu with Kotlin in Android Studio? The function showActionMenu() shows a popup menu, it works well. I hope to change the title of a menu item when the menu is popup. I try to add onPrepareOptionsMenu(menu: Menu) in the code, but it doesn't work, how can I fix it? Code A private fun showActionMenu() { val view = mActivity.findViewById(R.id.menuMoreAction) ?: return PopupMenu(mContext, view).run { menuInflater.inflate(R.menu.menu_option_action, menu) /*...

Android Kotlin MVVM with dagger, JetPack components Currently i am working in Kotlin android development. while writing the MVVM architecture, i am stuck with ViewModel Creation Error : Only classes are allowed on the left hand side of a class literal Related classes are Detail BaseViewModel class, while creating the object of this class, we getting the error package com.logicipher.mvvm.ui.base import androidx.databinding.ObservableBoolean import androidx.lifecycle.ViewModel import com.logicipher.mvvm.data.DataManager import...

How to implementation parcelable for List<data class> (child list) in kotlin? I want to intent data class to other activity with parcelable. But I have stuck when i want to intent variabel type List. I don't know how to implementation because it's first time for me using parcelable This is my POJO/ Models @Parcelize data class HistoryTree( val id: Int, val landOwner: String, val treeNumber: String, val membershipId: String, val speciesId: Int, val speciesName: String, val diameter: Double, val areaName: String, val woodProducts: List) :Parcelable @Parcelize data class...

Add to Favourites using room database i have done implementing the add to favourites using room db successfully.but it is only specific to single user.how can i handle multiuser? scenerio is-->when user install the app for the first time -->user can able to set favourites successfully.but when log out and another user log in he could able to see previous persons favourites which is wrong. which is wrong -->i got where im going wrong because it is only having one db (specific to one single user) i refered this answer ==> <a...

How to update UI from model business logic? Use case: a simple billing app. When quantity or price change, the total should change. I'm using DataBinding, how do I notify the UI that total changed? Model: class Detail(){ private var _quantity = BigDecimal.ZERO private var _price = BigDecimal.ZERO private var _total = BigDecimal.ZERO var quantity : BigDecimal get() = _quantity set(value){ _quantity = value compute() } //same boilerplate for price private fun compute(){ total =...

What is difference between androidContext() or inject our context from activity or fragment? 1- First approach for inject context : Suppose that we have module like this : val utilModule = module { factory { MyClass(androidContext()) } } Our class is : class MyClass(private val context: Context){ fun myFun(){ //Use context here } } 2- Second approach is : Suppose that we have module like this : val utilModule = module { factory { MyClass() } } Our class is : class MyClass(){ fun myFun(context:Context){ //Use...

i have been trying to use For Loop in kotlin to ilterate through this JsonObject i have been trying to use For Loop in kotlin to ilterate through this JsonObject but i keep getting this error, can anyone help val earthQuakeJsonArray = baseJsonResponse.getJSONArray("features") //traverse the arrays for (item in earthQuakeJsonArray){ val currentQuake = earthQuakeJsonArray.getJSONObject(item) val properties = currentQuake.getJSONObject("properties") val magnitude = properties.getString("mag") val...

java.lang.AssertionError: Assertion failed - Android JUnit Mockito @Before fun setUp() { val compositeDisposable = CompositeDisposable() testScheduler = TestScheduler() val testSchedulerProvider = TestSchedulerProvider(testScheduler) sharedViewModel = SharedViewModel( testSchedulerProvider, compositeDisposable, networkHelper, repository, notesRepository, userPreferences ) sharedViewModel.noteSaving.observeForever( noteSavingObserver )...

Schema with param names with/without underscore in JAX-RS Using JAX-RS, how can I change the name of a parameter in a schema? I especially want to have parameters in snake case, but java/kotlin variables in camel case. For example: @POST @Path("somepath") @Consumes(MediaType.APPLICATION_JSON) @Produces(MediaType.APPLICATION_JSON) @APIResponses(APIResponse(responseCode = "200", description = "Token")) fun somemethod( @RequestBody(description = "lorem", content = [Content(schema = Schema(implementation = SomeReq::class))]) @NotNull...

Show a Lock Activity on top of Activity trigged using Implicit Intents (Intent.ACTION_OPEN_DOCUMENT_TREE) I'm trying to create a lock screen for my app which shows up every time the app is resumed from the background. It works normally with Android Arch Lifecycle Extensions. However, when using something like an implicit Intent.ACTION_OPEN_DOCUMENT_TREE or opening activity from an external library (Instabug) the lock screen does not show on top of the newly opened activity. To summarize here's the flow: User opens app -> User clicks on a button to trigger an external activity -> User presses the...

Multidimensional arrays in Kotlin Android Here's my array of arrays string.xml answer0 nswr0 answerzero answer1 nswr1 answerone answer2 nswr2 answertwo And how do I make a check so that at least one element is in this array? I want each question to have 3 correct answers. For a user typing - answer0 or nswr0 - he will be notified that the...

how to fix Mickito error - No interactions wanted here Initially presenter used to call the API service directly, I have refactored that piece of code to use Usecase and repository layer in between, so presenter will call the usecase which inturn calls the repository layer which calls the apiservice. but by doing this, some of the test cases are failing because of the following error org.mockito.exceptions.verification.VerificationInOrderFailure: No interactions wanted here: -> at...

message defined in describeMismatch BaseMatcher can't be printed out if mismatch Following is a method to assert recycle view item count in target range. If not in range, message in describeMismatch should be printed. But actually, after executing fail, no message. fun assertAdapterItemCountRange(viewId: Int, min: Int, max: Int, timeoutInMs: Int) { val matcher = object : BaseMatcher() { override fun describeTo(description: Description?) { description?.appendText("Fail to assert adapter item count, expected in range $min to $max")...

How To Make Multiple TextViews Show The Value Of An Edited SharedPreference Each Time In Kotlin I Have Created A Function That Dynamically Makes A Textview And Assigns The Values Of Shared Preferences To It.Now I Want To Make A New TextView Each Time The User Enters Data In It There are 5 Shared Preferences - Day , Medicine ,Time , HowMuch ,When These Are The Preferences val pref = getSharedPreferences("AddFriday", MODE_PRIVATE) val dayA = pref?.getString("day", "NOT FOUND ").toString() val medicinea = pref?.getString("medicine", "NOT FOUND ").toString() val whenSel...