Get build time with Gradle Kotlin DSL In my Gradle script's build task, I want to get the current timestamp whenever I build my project and save it to a file in my project's resource directory. If I understand correctly, I should be able to call Java methods to achieve this, something like (in Kotlin): val timestamp = SimpleDateFormat("yyyy-MM-dd-HHmmss").format(Date()) Attempting to import my script into IntelliJ fails with unresolved reference errors (SimpleDateFormat and Date). Using the fully qualified name does not work...

Android: Detecting new pictures taken by the user I want to detect it every time the user takes a picture. I've tried to use a BroadcastReceiver and a FileObserver but neither of them ended up working for me. any suggestions?

Observe LiveData from ViewModel in Fragment i have a buttonLogin in fragment and set onclick for run method login inviewModel . note: (fargment is for navigation button and whid change item add to backstack) now :how observe for result login method result?onActivityCreated.is deprecate and whenever observe in onViewCreated with change item Runs again. becase :When the user presses back on FragmentB , FragmentA goes through onCreateView() → onViewCreated . So where should it happen?

¿cómo hacer una función que al presionar un número ejecute una acción? [closed] estoy haciendo una app para android TV, y quisiera crear la funcionalidad en la que el usuario presione los números del control remoto y sea llevado al canal con ese ID. Alguién podría ayudarme? .. Muchas gracias

BottomNavigationView, icons spaced equally I'm using BottomNavigationView with two items, however, on tablet or landscape, it pushed both icons to the center. I'm trying to have equally spaced similarly to what material shows but without label: Here is my code, does anyone know if there is an attribute that I could use to achieve this?

How to collect flow data after view is binding complete in Android kotlin Hey I am working on Kotlin flow. I am working in ViewPager2 with Paging 3 Library. I am getting some bug which caused indexing issue in ViewPager2. Someone suggested me use lifecycleScope.launchWhenCreated but it not working correctly. According to this answer The core issue is that are starting collection on Paging before ViewPager is ready to start binding the items. I tried this solution, but it didn't work well. I want to dig...

KMM: Remember selection range of TextFieldValue when using String as state type I'm working on a Kotlin Multiplatform Mobile Project and am currently implementing state management on the Android side through Viewmodules. I want to share the state definition and so I created a data class with the initial state that the screen requires. I then initialize this data class as MutableState and update it through events. The data class below defines the state of a screen. In this case it's the state of a login screen and it's Text fields. // shared module data class...

App crash when trying to open new activity android studio kotlin I'm trying to make a simple gallery app to show some images but every time I try to open a new activity to display the image in full screen the app just crashes this is my code. MainActivity.kt: import androidx.appcompat.app.AppCompatActivity import android.os.Bundle import kotlinx.android.synthetic.main.activity_main.* class MainActivity : AppCompatActivity() { val list = listOf( R.drawable.smiley , R.drawable.smiley1 , R.drawable.smiley2 , R.drawable.smiley3 ,...

Implement annotation processor that allows to call method only if variable annotated with annotation (like Rust mut) I think it's better to start with the idea I want to implement. I'm really inspired by Rust mut pointers so the same type can be immutable and mutable at same time. And I'm thinking is it possible to implement something like this for JVM. It looks I just need to create annotation @Mutates to annotate methods that changes current class state and annotation @Mutable to annotate local variable, fields and args. Logic of processor is not too hard. For every invocation of method annotated by...

Bottom navigation setOnItemSelectedListener return super I have botton navation setup up as below and it works all right. navController = findNavController(R.id.nav_host_fragment) appBarConfiguration = AppBarConfiguration(setOf(R.id.nav_1, R.id.nav_2)) setupActionBarWithNavController(navController, appBarConfiguration) binding.bottomNavView.setupWithNavController(navController) Now I would like to prevent switching fragments if current fragment is the second one and it has some flag set in it. I've tried using...

Kotlin CLOB to String I have a function in Oracle that returns a CLOB. In Java I can use the following code to execute this function and fetch the result: Oracle function definition in my Repository class: @Query(nativeQuery = true, value = "SELECT GETIDSSTATUS() FROM DUAL") Clob getIdsStatus(); Conversion to String: Clob idsStatus = dbMonRepository.getIdsStatus(); String idsStatusStr = idsStatus.getSubString(1, Math.toIntExact(idsStatus.length())); What's the equivalent code in Kotlin or any other way to...

In Kotlin with Spring Data JPA, how do I save a ManyToOne child key reference without creating a new child record? I am using Kotlin and Spring JPA CRUDRepositories. I have an Order class and table, and a Promo class and table. An Order can be associated with 1 Promo. The Promo table has pre-seeded records representing promos that can be associated with an Order - so I don't expect new Promo records to ever be created during app runtime. The Order table has a promo_id column. The Kotlin Order class has a field like this: @ManyToOne @JoinColumn(name = "promo_id") @JsonProperty("promo") val promo: Promo?,...

Why is the color for the notification icons generated by Android Image Asset Studio completely white? When I right-click on my drawable folder and do New -> Image Asset -> Notification Icons, my icon color becomes white. The background of the image I upload is transparent, but why does the icon become white? How do I fix this? I want to keep the original color. My minimum API level is set to 21.

Why does jetpack-cmpose state hoisting use callbacks? This tutorial on state hoisting in jetpack-compose says: By passing a function and not a state to OnboardingScreen we are making this composable more reusable and protecting the state from being mutated by other composables. In general, it keeps things simple. How does passing a callback function achieve these stated goals any better than passing the state directly?

Using Kotlin, how do I make the app open a specific video in the YouTube app the second the user opens the app Before you get call me out for being stupid or anything, I've only been working with Kotlin for a couple days and the only language I am familiar with somewhat is SwiftUI. Yes I Googled this and could not find any working tutorials for this. Basically what I am trying to create is an app that takes you to my unlisted rickroll the second you open the app. Alternatively, I have tried a VideoView and got it 70% working but cant fix my code that I got from a 2 year old YouTube video. I had a...

Is there any way to access methods of one aar file from another aar file in project libs folder I generated 2 aar files from 2 libraries generated by me and added in my main project by putting them in libs folder. Now i can able to access classes of the aar from main project. But i want to call class of first aar from second. Is it possible

Filter a list inside map function of another list - Kotlin I am struggling to filter a list and return it inside map function of another list. val userChoiceCategories = recommendedCategoryDb.find(RecommendedCategory::userId eq userId).toList() userChoiceCategories.forEach { // return articleDb.find().toList() .filter { article -> article.category != it.category.name } } return listOf() I want to display articles from all other categories except the one user has selected to...

In Kotlin and XML, why does TransitionDrawable.reverseTransition not work when using a listener? Running this code results in the transition just starting over from scratch. However, if I call transition.reverseTransition(2500) twice, consecutively, it works fine. Is there a way to work around this? Overall, my background goes from gray gradient to two-colour gradient. binding.ccp.setPhoneNumberValidityChangeListener { transition = ContextCompat.getDrawable(this, R.drawable.button_transition_color) as TransitionDrawable...

getting data from non-existing collection in Firestore android kotlin I'm working on an app to let user post their pictures and descriptions to a room. posted pictures and descriptions will be stored in firestore in the data structure as shown in the bracket [ collection("user").document(id).collection("post").document()]. and the posts will be retrieved to display to each user with adapter. THE PROBLEM happens when there is no initial post yet and if a user goes to the room the app will crash because the firestore path like collection and document shown above...

There is an datasource , Repo , viewModel , ui , how to make viewModel factory as there are 2 VieweModel in Ui? The datasource will hit an api . So calling it frm Ui is not possible.

fadeOut view and delete I want to apply fadeOut effect on TextView (not present in xml files) which is added to RecyclerView when it is long clicked and then deleted (long clicked -> fadeOut -> gone deleted). Here is my code: val onLongClickListener = object: TaskItemAdapter.OnLongClickListener{ override fun onItemLongClicked(position: Int) { val fadeOut = AlphaAnimation(1f, 0f) fadeOut.interpolator = DecelerateInterpolator() //add this fadeOut.duration =...

com.google.firebase.database.DatabaseException: Can't convert object of type java.lang.String to type com.example.events.Model.IMG here is my activity code:- class event_images : AppCompatActivity() { private var recyclerView: RecyclerView? = null private var imageAdapter: Imageadapter? = null private var img1: MutableList? = null override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) setContentView(R.layout.activity_event_images) recyclerView = event_images recyclerView?.setHasFixedSize(true) recyclerView?.layoutManager =...

How can I have reference for drawableTop of a Button? I declared a drawable inside my Button and I want to get a reference for that because I created a method where I display a Dialog, extract the text and drawable of that button and use it to change the text and icon of a dialog dynamically. Please do check this snippet: private fun showProductDialog(button : Button){ //extract product info selected from button //show dialog val dialog = Dialog(this) dialog.setContentView(R.layout.dialog_product) //set...

Minus Values not getting display on BAR Chat - MP Chart Android library I am using MP Chart library in android to display BAR Chart in my Android application. I can display the positive values on BAR as below : But when the Values If in Minus as below : -0.01 , -0.04 , -0.02 are not getting display on top of BAR as a BAR value. I am getting as below for this values : What might causing the issue ? I am doing...

When to use collect and collectLatest operator to collect kotlin flow? I want to know a practical scenario of both of them. I know the difference but couldn't relate to my implementation.

App crashes after calling 'AppCompatDelegate.setDefaultNightMode' when activity is navigated back to from a different activity For my pixel art editor, I've decided to implement a dark mode feature. Here is the code which handles the switching of the app to dark mode: fun extendedOnOptionsItemSelected(item: MenuItem): Boolean { when (item.itemId) { R.id.dark_mode -> { if (!AppData.darkModeEnabled) { AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_YES) AppData.darkModeEnabled = true } else {...

How Do I Send My Multipart Form Data POST Request In Kotlin Using Retrofit and OkHttp? I am trying to send multipart form data to a server: https://example.com/mail/ The data is a pdf file and a json object. I have to the best of my ability followed various examples but am not having any luck. This current iteration is crashing at enqueue. class APIClient { private var retrofit: Retrofit? = null fun getClient(): Retrofit? { val interceptor = HttpLoggingInterceptor() interceptor.level =...

auth.currentuser.uid becomes null after clearing app data and cache android kotlin I'm having a problem with my app that it throw an error as shown below. Lastly, the app was working fine but when I cleared app data and cache It starts to crash if I intent to log in. the problem may relate with auth.currentuser.uid of firebase.I have tried to uninstall the app, restart the phone and reinstall the app but the problem still exist. please kindly help. thanks in advance! the code and the error as shown below package com.example.amazontutoringcenter import...

Java or Kotlin language for android app developement as beginner [closed] I am a beginner, want to learn android app development. Which language should I choose Java or Kotlin?

Error: Could not find or load main class org.jetbrains.kotlin.daemon.KotlinCompileDaemon [daemon] Error: Could not find or load main class org.jetbrains.kotlin.daemon.KotlinCompileDaemon. Could not perform incremental compilation: Could not connect to Kotlin compile daemon Could not connect to kotlin daemon. Using fallback strategy. Error: Could not find or load main class org.jetbrains.kotlin.cli.jvm.K2JVMCompiler We have did .gradle/clean .still facing same error.