How to add the parcelable implementation for ArrayList of Custom object? I have created a class with an ArrayList of Custom object and some other string variables. I used "Add parcelable implementation" for making this class parcelable. In the auto-generated code I tried using readTypedList for the TODO part but then I get the error which I have shown below. Also the custom object Cart which I am using is also parcelable. <a href="" rel="nofollow...

Can I use direct file paths to access files stored in app specific storage? I have an app where I capture/download images and store them to the app specific storage using: File fileToSave = new File(getApplicationContext().getExternalFilesDir( Environment.DIRECTORY_PICTURES), "filename"); Then, I save the absolute path to the file in the db using: saveToDb(fileToSave.getAbsolutePath()) My question is, will I be able to access the file later using this absolute path? File file = new File(savedAbsolutePath); Is this the best practice?

New Jatpack paging library makes app crash I've updated the following libraries: kotlin.reflect to 1.5.31 room.paging to 2.4.0-alpha05 room.ktx to 2.4.0-alpha05 and now all features of my app that use list of Room objects with Flow and Paging (all my RecyclerViews actually) crash with the following vague exception: java.lang.AbstractMethodError: abstract method "java.lang.Object androidx.paging.PagingDataDiffer.presentNewList(androidx.paging.NullPaddedList, androidx.paging.NullPaddedList, int, kotlin.jvm.functions.Function0,...

Gradle Docker Build Issues I have a Dockerfile with the following contents: FROM gradle:6.9.1-jdk17 as builder COPY services/api/build.gradle.kts ./ COPY services/api/src ./ COPY services/api/settings.gradle.kts ./ RUN gradle build --no-daemon FROM openjdk:8-jre-slim COPY --from=builder /home/* /home ENTRYPOINT [ "java", "-jar", "./home/build/libs/api.jar" ] When I copy from builder using COPY --from=builder /home/* /home it works with no issue and if I sh into the image I can see that there is a folder structure...

Using Bearer Tokens for Auth with Ktor - bearer not found I want to use Ktor in my Android app with Bearer Token Authentication (dependency version: io.ktorktor client auth1.6.4). interface ApiService { suspend fun getInfos(): List companion object Factory { fun build(): ApiService { return ApiServiceImpl(httpClient = HttpClient(Android) { install(JsonFeature) { serializer = KotlinxSerializer( kotlinx.serialization.json.Json {...

Cómo hacer Un registro con ANDROID STUDIO Y Kotlin (SQLITE) Estoy utilizando ese código para hacer un registro con un botón, pero cuándo intento registrarlo no funciona, Tengo todo lo demás hecho y está bien, este código es lo mas probable que me este fallando. val nombre = findViewById(R.id.edtNombre) val apellido = findViewById(R.id.edtApellido) val email = findViewById(R.id.edtEmail) val contrasena = findViewById(R.id.edtContraseña) val btn_guardar = findViewById(R.id.btnRegistrarse) crud = UsuarioController(this)...

TextWatcher onTextChanged Android Kotlin causes infinite loop I have 3 fields: fuelAmount, fuelPricePerUnit and fuelCost. I want to add a TextWatcher to every field. Logic should look like this: fuelCost = fuelAmount * fuelPricePerUnit fuelPricePerUnit = fuelCost / fuelAmount val refuelTextWatcher = object : TextWatcher { override fun beforeTextChanged(s: CharSequence?, start: Int, count: Int, after: Int) {} override fun afterTextChanged(s: Editable?) {} override fun onTextChanged(s: CharSequence?, start: Int, before: Int, count:...

Kotlin- not getting the value of params from either.eager block I wonder how can I create a new jsonObject from overwriting some key values on existing object. In my case I have one jsonObject existingData, and an order of type Map. // order is of type Map val keys = listOf("service", "customerContact", "deliveryAddress", "deliveryZipCode", "deliveryZipArea", "deliveryCountryCode", "deliveryPhoneNumber") val newObject = existingData.toMap().map { it -> if (relevantKeys.contains(it.key) && !matching(it.value.asString, order.get(it.key))) {...

Kafka Streams: Using an Aggregator Class in windowed streams .aggregate() method My code is based off the answer here, which is in Java, I am writing my application in Kotlin. I am using the AggClass to store starting position as two Double, end position as two Double(updated with every new message in a session), and total distance which is a running total. This snippet works correctly. private val distance = trips .mapValues { _, trip -> objectMapper.readValue(trip, Trip::class.java) }.peek { _, trip ->...

How can I make Calendar change the title and day names according to language inside application? I have a Calendar instance and I would like to change the titles, button text according to language chosen inside the app. Is there a way to achieve it? Thank you

Custom TabRow in Jetpack Compose I use TabRow and I have two questions: Is it possible to remove a line that is wide the entire width screen? How Can I bring the buttons together (reduce space between them)

Am getting this error "failed to compile values file" Am new to android and am trying out the dice roller app tutorial from Android developer platform , but when ever I try to run the app on my phone in other to test the toast message. I get the error , ' failed to compile values file . Any detailed help will be appreciated.

Android smsManager.sendTextMessage throwing exception 'Own package not found: package=com.android.phone' I am using SmsManager to send text message from user's device, but some users are not able to send message from my app. Looks like most of the affected users on Android 11. Does this mean user has deleted the default phone app from their device or will adding below in Manifest file will resolve this issue?

Intent Passing Null Variables to Second Activity (Kotlin) I am really stuck. In my code below, it shows the user the contents of his/her cart and gets information from the user. Once the user is satisfied and has entered the neededd information, then the user can click on continue, which will open up a new activity. In this new activity, I want to access the information the user entered in the previous activity. But when I use Intent, it says NULL for both variables. In my Cart.kt I have put a comment on the line of code/variable that I need to...

Gradient backround for FAB in Jetpack compose I want to add a Floating Action Button with a gradient background in Jetpack Compose. I have the following snippet to do so: FloatingActionButton( onClick = { coroutineScope.safeLaunch { navController.navigate("AddTodoPage") { launchSingleTop = true } } }, shape = RoundedCornerShape(14.dp), backgroundColor = Color.Transparent, modifier = Modifier .constrainAs(addFab) { bottom.linkTo(parent.bottom)...

Akka Cluster over Azure AKS I've built a lock/unlock mechanism on top of Akka with REST endpoints, I'm able to run the Akka cluster with Cassandra event peristency locally but I'm not able to run on Azure Kubernetes (AKS). I tried to set up different configs on the application.conf (akka discovery, akka clustr with seed nodes...) but it either join an artificial cluster locally or failing with an error like below : 2021-10-13 154144.707 ERROR 16664 --- [lt-dispatcher-3] akka.io.TcpListener : Bind...

Android: Accurate way to retrieve the phone's angle? Is there a way to retrieve an Android phone's angle? If I place my phone flat on a table, the angle should be 0 degrees, if I place my phone upright against a wall, the angle should be 90 degrees. I am wondering if I can leverage any sensors built-in to the phone's hardware to accomplish this.

Mocking a Uri fails with Can't Find Stub I have this class that I'm trying to test: class GetNavigationModel @Inject constructor() { operator fun invoke(contentResolver: ContentResolver, uuid: String): NavigationModel { val cursor = contentResolver.query( Models.APPOINTMENT.contentUri, arrayOf("one", "two", "three"), "one = ?", arrayOf(uuid), null ) // more stuff follows } } This is my test so far: class GetNavigationModelTest {...

How to change bottom navigation bar's selected item programatically I am replacing my fragment with another one but bottom navigation bar's selected item is not changing. How can i change it. (Actually im new and I don't know much about design if this method is wrong you can tell me another method to make it possible) These two functions I used for changing fragments (HOST FRAGMENT) binding.bottomNavigationView.setOnItemSelectedListener { when(it.itemId){ R.id.nav_profile -> replaceFragment(ProfileFragment())...

How to access an element in a list without using the firstOrNull I am trying to see how I can access element in my list so far what I have tried gives me null or nothing at all. I have this val private val userName = bankHolder.flatMapObservable { it.remoteBankHolderr } .switchMap { it.localUsers }.switchMap { Observable.just(it.... user.name) } This is a sample of the data class I am trying to get the user.name from data class LocalUser( val userid: String, var userStatus: UserStatus, val user: User, val rSid:...

Why does this While loop doesn't work as intended? Hey guys, newbie here. One question, can't understand why this while loop doesn't work even when I entered a int bigger than 9 to the variable num, the while loop should repeat itself until the expression is false, and it doesn't, no output even. Am I missing something here? Thanks in advance. fun main () { while(true) { println ("\nWrite a positive number: ") var num = readLine()!!.toInt() var sum = 0 if (num > 9) { while (num > 9) { var digit =...

I cant assign Firestore data to my variable I was trying to get user username from Google Firestore. I pulled it easily with Google Auth User Uid and assigned to my predefined private variable named signedInUser but when i try to use signedInUser outside of addOnSuccessListener's scope, it returns null all the time and I want to use it outside of the scope. By the way In the addOnSuccessListener's scope, it returns correct string. Here is my code class ProfileFragment : Fragment() { private val TAG = "Posts Activity" private...

Kotlin MainActivity WebView loadUrl from FirebaseMessagingService In my Kotlin app in my MainActivity I have a WebView and I want to loadUrl when on the FirebaseMessagingService the function onNewToken is called: MainActivity.kt class MainActivity : AppCompatActivity() { val myWebView = findViewById(R.id.webView) myWebView.loadUrl("https://stackoverflow.com/") } MyFirebaseMessagingService.kt class MyFirebaseMessagingService : FirebaseMessagingService() { override fun onNewToken(token: String) { super.onNewToken(token)...

org.gradle.api.tasks.TaskExecutionException: Execution failed for task ':walletlink:kaptDebugKotlin' I'm trying to develop the android wallet app with this SDK project https://github.com/walletlink/walletlink-mobile-sdk as submodule but facing problem after I pull the submodule. I got Execution failed for task 'appkaptDebugKotlin'.

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Warning: The 'kotlin-android-extensions' Gradle plugin is deprecated. Please use this migration guide...

BitmapFactory.decodeByteArray return "" with a String Base64 Kotlin I have a base64 String and I want to put in a ImageView but when decode de base 64 the method decodeByteArray return "" . I use Koltin and ApI 30 val imageBytes = Base64.decode(base64, Base64.DEFAULT) val decodedImage = BitmapFactory.decodeByteArray(imageBytes, 0, imageBytes.size)

layout resource directory not created automatically when I create android project in android studio At first when i create my my android project in android studio android studio automatically creates a layout resource directory which contains the activity_main.xml file along with the main.kt file in the java directory.But after creating some few projects, android studio fails to provide me with the layout directory with the activity_main.xml and main.kt files automatically.I'm a beginner with the android studio environment that's why i prefer it comes with the layout resource folder and...

Is there a way to delete sharedPrefs in android when reinstalling the app? I find this strange, but when I uninstall my app and install it again it restores SharedPrefs which is responsible for my progress bar progress. I've tried allow backup=false but it doesn't work. Here is the code: override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) mBinding = ActivityMainBinding.inflate(layoutInflater) val view = mBinding.root setContentView(view) if (ContextCompat.checkSelfPermission(this,...

Convert stream or sequence to a stream or sequence of summaries Using Kotlin, how would I transform a Sequence of detail objects into a Sequence of summary objects, where each summary object represents a fixed number of detailed objects? It's kind of like map, except it's not one-to-one and it's kind of like reduce except it's not to a single accumulator? For example: var hourlyInfo: Sequence = ... var dailyInfo: Sequence = hourlyInfo.somethingMagical() What about the same problem with a stream instead of a sequence?

Android Back Button Event Hi, I need to do something when I clicked on the back button (which is at the bottom of the screen), how do I add click event on that button?

How to use setOnClickLisenter in Android viewModels? RestActivity package com.example.internet_ex import androidx.appcompat.app.AppCompatActivity import android.os.Bundle import android.widget.Button import android.widget.TextView import androidx.lifecycle.* import kotlinx.coroutines.launch import retrofit2.Retrofit import retrofit2.converter.moshi.MoshiConverterFactory import retrofit2.http.GET import retrofit2.http.Path import java.lang.StringBuilder data class Owner(val login: String) data class Repo(val name: String, val owner: Owner, val...