How to navigate from fragment to activity with kotlin? I have to navigate from a fragment contained inside an activity and I have to navigate to another activity fragment. How can i do it? the second activity I'm trying to reach have a navbar, if I navigate directly to the fragment home for example I cant see the navbar. The code I'm trying to execute: binding.buttonLogin.setOnClickListener { view?.let { it1 -> val intent = Intent(activity, MainActivity::class.java) startActivity(intent)...

Creating multiple intent with specific extra, always read the same extra I'm setting up an application with some notifications that are triggered by some Alarm. In order to set different notification, I take the current millis time as Id. However, when I'm passing it to intent through extra, it always receive the same value. Here's my code, it'll be clearer : In mainActivity we've : class MainActivity : AppCompatActivity() { private lateinit var alarmManager: AlarmManager private lateinit var pendingIntent: PendingIntent override fun...

Show one item at screen in a static scroll view I want to create just the front-end of an android app which can show the working of a scroll view in a way that scroll view shows only one layout or one item at a time ( For eg. in Instagram application moving from one post to another) which means there is only one complete post on the screen at a time rather than two half post when you just swipe up once. Also it's just static data and no use of recycler view or adapter in background so have to work with scroll view option or any other...

How do you nest Kotlin tests in packages in intelliJ? I have a new Kotlin project in intelliJ building with Gradle. I am using JUnit5 as a testing scheme. Initially when writing my tests, they were executable from intelliJ using the green arrow. After writing some more tests, I decided to start organizing my tests into subpackages. As soon as I moved a test into a subpackage, the test began to fail with an error No tests found for given includes: [PackageName.FileName.TestName] If I look at the gradle run configuration of that test, I see...

Kotlin - Deserializing with Jackson XmlMapper I'm having some trouble to parse correctly an XML file with Jackson XML Mapper. Suppose I have this simple XML: I am x I am y and this simple class: @Root(name="Simple",strict = false) class Simple { @Element(name = "x", required = false) lateinit var x :String @Element(name = "y", required = false) lateinit var y :String } The compiler keeps throwing this error: Exception in thread "main"...

Feign.RetryableException nodename nor servname provided I'm currently working on some microservices and when I tried testing an endpoint on my local machine I keep getting this error. 13-03-2022 173248.067 [XNIO-1 task-8] DEBUG 44feb097-ec1b-44dd-898a-15c9d4e822a9 c.l.d.r.control.service.LoginService - Enter: userLogin() with argument[s] = ghan_2@yopmail.com, 12345678abc, null, true Hibernate: select customer0_.id as id1_5_, customer0_.created_by as created_2_5_, customer0_.created_date as created_3_5_, customer0_.last_modified_by as...

How to get values from an Adapter Class in Kotlin? I'm trying to get data dynamically from an Adapter Class but I don't know how to do it. What I want is to get if the CheckBox (cardCheck) is checked when the "Calculate" Button at the bottom is clicked. Here is a picture of the layout of the app Code of Card (Model) package com.bhasvic.gardener.models data class Card(var name: String, var price: Int, var checked: Boolean) Code of Adapter Class package...

How to overload operator for null? I would like to overload an operator like invoke for null literal. For example, so I could writen something like null(1, 2) Is it possible?

I cant import kotlin coroutines properly in android studio bumblebee I am developing new android I cant import kotlin coroutines properly and getting following two error below my ViewModel where I have implemented Kotlin Coroutines import androidx.lifecycle.MutableLiveData import androidx.lifecycle.ViewModel import androidx.lifecycle.viewModelScope import com.example.weatherapp.WeatherResponse import com.example.weatherapp.domain.use_case.WeatherUseCase import...

How to escape string programmatically in Kotlin? I would like to escape string programmatically, so that it can be used inside quotes in Kotlin/Java code know, if some escape codes were used For example, string in code: "abc\"d\"" if printed: abc"d" should be converted to in code: "abc\\\"d\\\"" if printed: abc\"d\"

Any Way to Control Remaining Item on Spring Batch? If I have items like this -> [1,2,3,4,5,6,7,8,9,10] And if ChunkSize =3, spring batch ItemReader reads item like [1,2,3] [4,5,6] [7,8,9] [10] But, I want to [1,2,3] [4,5,6] [7,8,9,10] Is there any way to do this?

Kotlin, IDEA ( "gradle-wrapper.properties" not found ) & Unsupported class file major version 61 Could not open init generic class cache for initialization script 'C:\Users\danil\AppData\Local\Temp\wrapper_init.gradle' (E:\dd.gradle\caches\7.1\scripts\4owkpohf6femn0tkcx35du5j0). BUG! exception in phase 'semantic analysis' in source unit 'BuildScript' Unsupported class file major version 61 Тут довольно странная проблема, раньше ее не было, но вот ни с того ни с сего появилась в IDEA с языком Kotlin ( java...

Composable calls are not allowed inside the calculation parameter of inline fun I am trying to access the dao instance of my room database which is being used to store names(This code I wrote just to get familiar to jetpack compose). I tried to access my dao instance inside my composable function but is giving me this error -> Composable calls are not allowed inside the calculation parameter of inline fun remember(calculation: () -> TypeVariable(T)): TypeVariable(T) My Code @Composable fun HomeScreen(navController: NavController){ var dao by remember{...

AndroidStudio has trouble recording/playing .ogg audio files I am building a mobile app in AndroidStudio which can record sounds from the phone microphone via the MediaRecorder and play them back to the user via MediaPlayer. At first i used .mp3 file format which worked without problems, but once i tried .ogg format the app crashed. When using .ogg OutputFormat with Opus audio encoder, the app records a sound and crashes when i...

How to optimize and reduce the time of deserialization in a nested list(3 levels down)? I have a very huge json data which I need to deserialize & convert it into a list(collection) to be consumed in a recyclerView later, I use gson(version 2.8.8) for the deserialization. The issue is I need to make iteration in 3 loop to get to the final data and add it, as the right type, to the resulted list. I'm facing a huge outOfmemory, a freezing screen and sometimes a crash because of the large amount of the data. I tried a simple for, forEach, asSequence()?.iterator()? and even...

How can I publish my own default html page when I get the error "Webpage not available" in my Android Studio App Webview? I have some Kotlin code on Android Studio that I use to find and show my own html pages on my Android app. If the html page exists the app works well and it pulls the html page from the assets folder and shows it via the webview capability. If there is no html page with that name, then my app returns an error "Webpage not available The webpage at file:///android_asset/strainer.html could not be loaded because net:ERR_FILE_NOT_FOUND" Instead of this error I would like to show my...

One of two branches missed from test coverage I have this function as the System Under Test: fun foo(os: OutputStream) { os .bufferedWriter() .use { it.write("hello") } } And I have this test for it: @Test fun test() { val os = ByteArrayOutputStream() foo(os) Assertions.assertEquals("hello", os.toString()) } JaCoCo pinpoints the line containing .bufferedWriter() and says one of two branches were missed. Which two branches is it referring to?

Android kotlin - Some hints about 2FA code input? I want to add to my app 2FA and I need code input like this. My question is: there is some updated library to achieve this? Someone know a convenient way to create this input type? For now I found this libraries but they seems no longer maintained: https://github.com/glomadrian/material-code-input <a...

Unable to store data on Room database In this Android project I am developing, I have 1 activity with 2 fragments: one has a ListView and the other a formulary to insert the data being displayed on the ListView. The data is being stored on a Room database. The insertion part was working fine, but after some change in the code (do not remeber what change), right now is not working. Even when the insertion was working, the data was not being displayed on the ListView (that I suspect is due something wrong about the adapter...

Getting context in Kotlin Adapter for getItemCount I'm looking for a way to find the context of a RecyclerView Adapter outside of the viewholder methods. I have two different arrays that I would like to be able to display based on the activity/fragment that is being shown(the final app would have 4 arrays which is why I don't just want to make another adapter for each array). I can get it to work in the onbindviewholder using holder.itemview.context but since the arrays aren't the same size I need a way to use context for an if statement in...

RecyclerView Adapter not displaying list elements I am building a list app to learn more about RecyclerViews, ClicklListeners, ViewModels, and LiveData. I have defined a custom data class Item: data class Item(val itemName: String, var detailItems: MutableList) : Serializable And am using a ViewModel containing a list of Items: class ListViewModel : ViewModel() { private val _list = MutableLiveData() val list: LiveData = _list ... } I have been able to use a RecyclerView to display a main list view that displays the itemName...

Trying to understand kotlin object code block I would like to understand the following code snippet: @Bean fun securityWebFilterChain(http: ServerHttpSecurity): SecurityWebFilterChain? { val customPrincipalExtractor = SubjectDnX509PrincipalExtractor() customPrincipalExtractor.setSubjectDnRegex("OU=(.*?)(?:,|$)") val customAuthenticationManager = ReactiveAuthenticationManager { authentication: Authentication -> authentication.isAuthenticated = "Trusted Org Unit" == authentication.name Mono.just(authentication)...

After adding an Image from gallery after opening my app again it crashes so after uploading my image from gallery my app works fine, but when i try to close and open my app again, on debug console it throws this error java.lang.SecurityException: Permission Denial: opening provider com.android.providers.media.MediaDocumentsProvider from ProcessRecord{ce75251 30290:eu.tuto.youtubeproject/u0a447} (pid=30290, uid=10447) requires that you obtain access using ACTION_OPEN_DOCUMENT or related APIs here is my code MainActivity.kt package eu.tuto.youtubeproject...

Troubles with OkHttpClient() POST not working KOTLIN I am attempting to make a sync call that needs to complete before proceeding with storing a user in the cloud. I believe the issue is within the RequestBody as it looks like it is just a byte array. Below is the code: val client = OkHttpClient() val mediaType: MediaType? = "application/json".toMediaTypeOrNull() val body: RequestBody = RequestBody.create(mediaType,...

Kotlin - array of arrays/array of objects/arrayList of arrayList I'm new to Kotlin, and Android Studio. I'm doing a project, where I'm reading accelerometer sensor data from a smartwatch. The app that is made has a start and stop button, that starts and stops the sensor readings, respectively. I would like to start recording the data when the user presses start - I know how to access the sensor data, but I need a way to store the data until the stop button is pressed. Accelerometer data is X-, Y-, and Z-axis data, that could look something like this:...

Android Could Not Find Dependency I am developing an app the required to convert pdf to MS and vice versa. I found this SDK https://www.pdftron.com/documentation/android/get-started/integration/gradle/ and it seems that it does the work. But when adding the dependencies I get the following error: Could not find com.pdftronpdftron9.2.0. Required by: project :app Any idea? The dependency is copied the same...

Custom Layout for PopupMenu I am new to Android, trying to crate a custom layout for android.widget.PopupMenu I searched but could not find a working solution. I want I want left side green line, bottom menu items separating line. That is a customised layout for PopupMenu items I need to use android.widget.PopupMenu only. I tried this, but not working. In //app/src/main/res/layout/menu_item_more.xml In //app/src/main/res/menu/more_menu.xml...

Transforming LiveData&lt;List&lt;T&gt;&gt; to LiveData&lt;T.attribute&gt; where attribute is a List This is my first time working with Transformations, and I believe I need to use the map() method but am not sure how. I have a data type Item: data class Item( val itemName: String, var detailItems: MutableList) I need to transform an instance of LiveData to LiveData item.detailItems.asIterable() }} Any suggestions or solutions are greatly appreciated. This questions is linked to a question I opened earlier today: <a...

how to fix the android studio splash when there is an image I have a little problem with the splash in android studio, the thing is that you see the black background programmed in the theme, but you do not see the image "@drawable/bg_splash_image" the image is in webp format converted in android studio, but for strange reason I do not load, what can it be? thanks. P.S. I work in kotlin SplashActivity class SplashActivity : AppCompatActivity() { override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState)...

Android Studio bottom navigation bar problem(RecyclerView: No adapter attached; skipping layout) I added a bottom navigation bar to my activity, after which my RecycleView stopped showing. The log gives an error "RecyclerView: No adapter attached; skipping layout" As you can see I have attached an adapter for RecyclerView. So why do I keep getting this error? I have read other questions related to the same problem but none of them help. Here is my source code: class Main : AppCompatActivity() { companion object{ val INTENT_PARCELABLE = "OBJECT_INTENT" } override fun...