How to copy elements to next position, if it satisfies a certain condition in kotlin I have a String say, val statement = "Ramu is a genius-boy, who likes tea." Now, I convert this into list of words separated by space " " : val ListOfString = ["Ramu", "is", "a", "genius-boy," "who" "likes" "tea."] I want to know how do I copy "genius-boy", the number of times it contains "-" so, final list should look like val listContainingConnectedWordCopies = ["Ramu", "is", "a", "genius-boy,", "genius-boy,", "who", "likes", "tea."] even better would be this list val...

Couldn't inline method call: remember { mutableStateOf(false) } I've looked at many similar questions and researched the error, it definitely seems to be some sort of version issue as that's what's been solving the issue with some other people. However, it's not working with me. I'll show the exact error stacktrace + the code causing the issue and both app and project build.gradle's. I have the following error, if it helps this error comes from Kotlin Bytecode - I'm attempting to decompile the code: org.jetbrains.kotlin.codegen.CompilationException:...

Why is the if else() statement running when the if() statement was already satisfied? (Kotlin) class MainActivity : AppCompatActivity() { private lateinit var binding: ActivityMainBinding private var loginAttempts: Int = 0 val keyValues = mapOf("Rampart" to "ampedwalls", "Lifeline" to "carepackage", "Horizon" to "gravitylift", "Valkyrie" to "skywarddive") var username = binding.editUsername.text var password = binding.editPassword.text override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) binding =...

How to share image from jetpack composer Hey I'm new to kotlin and I'm having problem with this. The images are in the drawable folder. And I need to share the image in jetpack composer. When I click now I can only see the text but not the image to share. Image( painter = painterResource(id = image.imgId), contentDescription = "Test", modifier = Modifier.fillMaxWidth() ) var pickedImageUri by remember { mutableStateOf(null) } val context =...

When selected an option from side drawer, how to open a web page via intent in Android I am using Navigation Component in Android to migrate between the different fragments. I have few options in my side drawer and choosing different options I move between different fragments. Now for one of the options instead of opening a fragment I want to directly open a web browser using Intent. How can I achieve this thing. Things I have tried till now. Using onOptionsItemSelected() inside the base activity - but it doesn't seem to have any effect on the action. Using deepLink in the...

null video when creating a thumbnail in kotlin I've been looking around for a couple of days already, but I can't find a solution to my problem. Device fisical and virtual: API 29 Problem: I'm trying to create and view a thumbnail of a movie I have in internal storage, i get this error: W/System.err: java.lang.NullPointerException: video must not be null W/System.err: at com.checkme.newmobile.ui.reports.updateRvAdapter.onBindViewHolder(updateRvAdapter.kt:151) W/System.err: at...

Android Kotlin - onBackPressedDispatcher.onBackPressed() will finish my activity? When onBackPressed() not working in recent sdk, we have to use the new method onBackPressedDispatcher.onBackPressed() . But my question is will it finish my activity? Or, I have to callback the onBackPressedDispatcher.onBackPressed() to finish my activity ? Button code is : button.setOnClickListener { onBackPressedDispatcher.onBackPressed() } CallBack Code: onBackPressedDispatcher.addCallback(this, object: OnBackPressedCallback(true) { override fun handleOnBackPressed() {...

Ktor client Android: no String-argument constructor/factory method to deserialize from String value I am currently building an Android app which makes a request using Ktor. client.request{ method = HttpMethod.Post contentType(ContentType.Application.Json) url("https://nessa.webuntis.com/WebUntis/monitor/substitution/data") parameter("school", "ppg-bernau") header("content-type", "application/json") header("User-Agent", "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:105.0) Gecko/20100101...

I am facing issue regarding uploading files on github I created an android app in android studio using kotlin. In my laptop, there is a package called java(generated) which contains a binding impl classes. Also there is a res(generated) package. When I tried to upload it on gitub, it is not uploading these files. All other files are getting uploaded but not this one. So, when one of my contributors tried to download the code and run on her android studio, it did not download the generated folders and there were no Impl classes. Hence it could...

Jetpack Compose: How to Provide Context for Dagger/Hilt So I realized when testing my actual app that I still need to provide a Context (when running actual tests I just used val appContext = InstrumentationRegistry.getInstrumentation().targetContext so I just kinda forgot about it. But now I'm running the actual app in the emulator and get this error on startup: error: [Dagger/MissingBinding] android.content.Context cannot be provided without an @Provides-annotated method. My DI object looks like this: @Module...

Android Compose: Is there any way to dismiss dialog on click of “Done” key from keyboard Hi Im new to Android compose, Is there any way to dismiss dialog on click of “Done” key from keyboard using ImeAction: currently below code is clearfocus on click of Done along with how to dismiss the dialog TextField( value = text, onValueChange = { text = it }, singleLine = true, keyboardOptions = KeyboardOptions(imeAction = ImeAction.Done), keyboardActions = KeyboardActions( onDone = { focusRequester.requestFocus() } ), modifier =...

How do I write data to a JSON file in Kotlin? And so, I have a class data class User (val name: String, val surname: String, val phoneMain: String, val phoneAdditional: String, val email: String) I create its object and how can I write this object and then read it from JSON file? I tried to use gson to read, but I get an error because of FileWriter. And I need to provide that in JSON file can include a lot of objects, how do I do it?

How can i use google maps distance matrix api I want to make a school bus application. But I don't know how to use it. Can you send a sample for me. My goal is to make a school bus app.

how to install certificate programmatically on Android without user interaction How do I silently install CA Certificates as a device owner, the installCACert method does not allow me to use the certificate for the VPN profile.

Spring Boot Kotlin 1.7.20 K2 Compiler Spring Plugin doesn't work I was trying to use the Kotlin K2 compiler with my Spring Boot application. Unfortunately it seems like the Spring Kotlin plugin isn't supported yet or I am doing something wrong with my configuration. As the official blog-post states, the all-open & no-arg plugin is supported. Although the Kotlin plugin seems not to be supported yet even if it includes both of these plugins? When I start up my application with the following settings enabled in my build.gradle.kts file: plugins {...

How to multiply and sumup fractions in kotlin i'm new to kotlin and i'm having a trouble multiplying same parameters of two objects which are in the same class. class Fraction (private val numerator:Int, denumerator:Int) i have a class called fraction and 2 objects. var f1 = Fraction(1,6) var f2 = Fraction(3,6) i want to create a function which multiplies first fraction on the second fraction. also i have to create a function which adds up these two fractions. can someone help me?

Background color of layout is not changing on clicking button with the help of radio button? activity_main.xml; MainActivity.kt package com.example.practiceapp import android.graphics.Color import androidx.appcompat.app.AppCompatActivity import android.os.Bundle import android.widget.Button import android.widget.LinearLayout import android.widget.RadioButton class MainActivity : AppCompatActivity() { lateinit var green : RadioButton lateinit var red : RadioButton lateinit var yellow : RadioButton lateinit var button: Button lateinit var layout :...

i get this output instead of the number output i input in androidx.appcompat.widget.appcompatedittext My Github: https://github.com/Berkayszk/ArtBookTesting/blob/master/app/src/main/java/com/example/artbooktesting/viewmodel/ArtViewModel.kt Full output - androidx.appcompat.widget.appcompatedittext{2100e7f vfed..cl. .f...... 143,862-573,952 #7f080202 app:id/yeartext aid=1073741837} - I'm making a work of art recording application....

JDBC Transaction is marked for rollback error when saving a second entity I've hit a bit of an issue wherein I cannot seem to be able to save a second entity into my database. This is what I currently have on my rest controller: @PostMapping("/contact/save") fun saveContact(@RequestBody form: ContactToCompanyForm): ResponseEntity { val contactResult = companyService.saveContact(Contact( firstName = form.firstName, lastName = form.lastName, department = form.department, mobileNumber = form.mobileNumber,...

Kotlin, is it possible to access the pair of a map? Is it possible to access the whole pair of a map, not only the key or a value? Let's say we have a map map = mapOf(Pair("Example1", 1), Pair("Example2", 2), Pair("Example3", 3)) I would like to access the second pair and put it into a variable, something like I would do with a list: val ex2 = map[1] #this would result with {"Example2", 2} And then i would be able to access the pair's key/value like: ex2.key / ex2.value More specifically, I would like to use this in my function to return...

Interface and class implementations for a generic solution I have following project in Github : https://github.com/alirezaeiii/TMDb-Paging I have a generic solution in my class using TmdbItem interface, such as : abstract class BaseFragment : BaseNavTypeFragment() { protected abstract val viewModel: BaseViewModel protected lateinit var tmdbAdapter: TmdbAdapter } Here is my interface and class implementations : interface TmdbItem : Parcelable { val id :...

Kotlin coroutines supervisorScope - how to make it wait until all launches complete I have some simple "hello world" code and i would like some help to know why the last statement printed is NOT this log statement: Log.v("myFunc", "finished count") My task is to create a supervisorScope that waits for all suspend functions to complete and then prints out a message. Here is the code: suspend fun fun1() { Log.v("myFunc", "1") } suspend fun fun2() { Log.v("myFunc", "2") } suspend fun fun3() { Log.v("myFunc", "3") } suspend fun fun4() { delay(3000L)...

Do I have to free/destroy ArrayAdapters in Android? Do I have to free my custom ArrayAdapters in fragments, like I do it with binding? And also what about ArrayList that holds the data? Inside my Fragment class I have: private var binding: FragmentUhfReadBinding? = null // init onCreateView, free onDestroyView, use onViewCreated private var listAdapter: ReadUhfTagInfoItemViewAdapter? = null // init in onViewCreated private val arrayList: ArrayList? = ArrayList() override fun onCreateView(inflater: LayoutInflater,...

How to navigate to a flutter screen from kotlin? I am working on a plugin that redirects user on NewIntent to a specific page in flutter. Below is the code for how this can be achieved using java. public class MainActivity extends FlutterActivity { @Override protected void onNewIntent(@NonNull Intent intent) { super.onNewIntent(intent); if (Intent.ACTION_VIEW.equals(intent.getAction())) { FlutterEngine flutterEngine = getFlutterEngine(); if (flutterEngine != null) {...

Android: Kotlin, swipeable, scrollable Material cards like a deck I like to use material cards on android. General lists with RecyclerView is not a problem anymore. I wonder how you can implement such a concept when the cards look like a deck and they can be scrolled. Scrolling occurs with the most common scrolling animation and only horizontally. I use kotlin. Thanks

android: Bitmap decodeFile returns NullPointerException I am unit testing some images from a resources folder. I am mocking the BitmapFactory method with Power Mock PowerMockito.mockStatic(BitmapFactory::class.java) val bitmap: Bitmap = BitmapFactory.decodeFile(imagePath); Everything works fine just that I get an error trying to decode the image path. I am very certain that the path string is not null. The image path is something like this: /$project...

i cant click whole cardview Hello i have a problem with my cardview. when i click whole cardview with binding.root.setonclicklistener{} doesnt work. only work when i click a little part on bottom. but also when i try click imageview (in my cardview) for favorite it works correctly. how can i fix that ?

remember derivedStateOf or not In the examples I find (here or here) I see that derivedStateOf is always wrapped in a remember block. Checking the Recomposition counts, I don't see a difference between val foo = remember { derivedStateOf { someState } } and val foo = derivedStateOf { someState } Could anyone...

How to add OnBackPressed in webVeiw in Kotlin? I am trying to add OnBackPressed in webVeiw but it is giving error MainActivity.kt - override fun onBackPressed() { if (webView.canGoBack()){ webView.goBack()} else { super.onBackPressed() } } All the other things are working fine but after adding this this is not working please if anyone have any solution please give

Return response to API involving Spring state machine multiple states I am learning to use the spring state machine and I have some question. Let's say I have the following states - INITIATED, IN_PROGRESS, SUCCESS Now I have an API which would initiate the flow. In my flow, API's response should be returned only after state changes to SUCCESS. Is it possible to achieve this with spring state machine or does it work only when the process steps are asynchronous?