Buttons will not show on displayed fragment I am currently creating a chat application for a project in Android Studio using Kotlin, Firebase Cloud Storage and Cloud Firestore, and Glide, and I am following a few tutorials to do so. Everything was fine until I created a fragment to handle the user's account settings, such as name, bio, etc. The fragment appears to work and the edit text fields and profile picture can all be edited and interacted with, but neither of the buttons for saving and signing out seem to be displayed, and I...

How to Inject constructor to abstract class with Dagger2 I have an abstract ViewModel abstract class AbstractViewModel( protected val dataStore: dataStore, protected val schedulerProvider: SchedulerProvider ): ViewModel() { abstract fun doSomething() } that is inherited by many ViewModels class InheritedViewModel1 @Inject constructor( dataStore: DataStore, schedulerProvider: SchedulerProvider ) : AbstractViewModel(packageDataStore, schedulerProvider) { override fun doSomething() {} } class InheritedViewModel2 @Inject...

Why am I getting a java.lang.ClassCastException in Kotlin? I wrote this sample code that I extracted from a library that I'm making because it is causing a java.lang.ClassCastException and I don't understand why. Here's the code: interface Event data class Update(val message: Message?) open class Message(open val text: String?) data class TextMessage(override val text: String) : Message(text = text) class MessageReceiveEvent( val message: Message, ) : Event class TextMessageReceiveEvent( val message: TextMessage, ) : Event fun...

app crashed when i click on ImageView placeholder i just write a code to get permissions to READ_EXTERNAL_STORAGE when i click on an ImageView. All of things going fine but i run the app and clicked on ImageView then the app got crashed. here is my code: in OnCreate: var iv_user_image:ImageView = findViewById(R.id.iv_user_image) iv_user_image.setOnClickListener(this@UserProfileActivity) my methods: override fun onClick(view: View?) { if (view != null){ when (view.id){...

Kotlin Plugin Error on Eclipse (Version: 2022-03) I have installed Kotlin plugin on my Eclipse IDE. But when I try to open a Kotlin file, the editor shows the below error. java.lang.NoClassDefFoundError: Could not initialize class org.jetbrains.kotlin.idea.j2k.J2KPostProcessingRegistrarImpl at org.jetbrains.kotlin.core.model.KotlinCommonEnvironmentKt.createKotlinCoreApplicationEnvironment(KotlinCommonEnvironment.kt:257) at...

if else return in kotlin Error : Kotlin: Type mismatch: inferred type is String but Unit was expected code : fun main() { val a = 2 var data: String = if (a != 2) { return "Hello" } else { return "World" } }

Jetpack Compose – BottomBar is under Bottom Navigation I've implemented BottomBar via Scaffold in Jetpack Compose. It works fine with a smartphone with gesture navigation. But when legacy bottom buttons are enabled, the overlap my BottomBar. My code: Scaffold( bottomBar = { BottomMenu() } ) { innerPadding -> Surface( color = AppTheme.colors.background.primary, modifier = Modifier...

android.view.WindowManager$BadTokenException: Unable to add window -- token null is not valid; is your activity running? in react-native android I want to show a custom view when the app is turned off or when the app is turned on, depending on the phone state. so I use WindowManager. but get error message W/System.err: android.view.WindowManager$BadTokenException: Unable to add window -- token null is not valid; is your activity running? W/System.err: at android.view.ViewRootImpl.setView(ViewRootImpl.java:1596) W/System.err: at android.view.WindowManagerGlobal.addView(WindowManagerGlobal.java:509) W/System.err: at...

NoBeanDefFoundException but scope is already defined I'm trying to solve this issue: I'm receiving a crash whenever i try to click on a push notification in certain fragment, that would redirect me to another fragment in the app. I defined my module like this: scope(named()) { factory { (view: DetailContract.View) -> DetailPresenter( view = view, monitoring = get(), api = get(), storage = get(), imageProvider = get()...

Passing a click action for preview in android jetpack compose What I have : I have a compose class that has a button I want to see the preview in the design view Issue I am facing : For the click How to pass as an object on the line I have marked in code Is this possible ? OnBoardingActionButton.kt @OptIn(ExperimentalPagerApi::class) @Composable fun OnBoardingActionButton( modifier : Modifier, pagerState: PagerState, onClick : () -> Unit ){ OnBoardingActionButtonContent(pagerState,onClick) } @OptIn(ExperimentalPagerApi::class)...

String var returning "Kotlin.Unit" instead of text in Kotlin finally I was able to capture the error in the response of an http request but now I am trying to return the result in a String and the only thing I get is a "Kotlin.Unit", why does it return that instead of text?? private suspend fun createUserPrepare():String?{ var result:String?="" try { val retrofit=retrofit.getInstance() val payload=registerPayload() val requestBody =...

How can I prevent the endIcon from getting focus when the Next key is pressed in TextInputLayout? I don't want the end Icon of EditText to get focus when the next key is pressed. I have given the imeOptions as 'actionNext' . Now when I click the Next key , if the edittext is empty , it moves to the next edittext placing the cursor there. But if the edittext is not empty, clicking the next key shifts the focus to the endIcon. Is there a way I can prevent this ?

My program only returns the days of a non-leap year Kotlin fun main(args: Array) { val year = 2020 var leap = false val month = 10 if (year % 4 == 0) { if (year % 100 == 0) { leap = year % 400 == 0 } else leap = true val numDay = when (month){ 1 ->"31" 2 ->"29" 3 ->"31" 4 ->"30" 5 ->"31" 6 ->"30" 7 ->"31" 8 ->"31" 9 ->"30" 10 ->"31" 11 ->"30" 12 ->"31" else ->"Invalid Argument" } I can't read the numDay of a leap...

How can I create regex for bank transactions Asking if anyone is able to help me get the regex for bank transactions for Android kotlin

cancelling a suspend function in kotlin if the same function is called again I want to cancel the function i created which simply increments a counter value. For example, if the specific function is triggered by click, I only want to display the log for the last uninterrupted click within 2 seconds. Basically, i want the function to cancel itself if called again if its ongoing (delay is ongoing). Is there such thing in kotlin? val counter = mutableStateOf(0) suspend fun addCounter(){ counter.value++ delay(2000) Log.e("click cat","click $counter") }`

Check if TextfieldValue is accepting space as characters I am using OutlineTextField and the value is taken from TextFieldValue. I have a save button on top of it which gets enabled if there is entered text and disabled vice versa. I have validated using below code val textFieldState = remember { mutableStateOf(TextFieldValue(EMPTY)) } onSaveClickEnabled = textFieldState.value.text.isNotEmpty(), But the above code is not validating if space entered initially. It enables...

Spring Data JPA filtering by best match I want to implement filtering for multiple fields of an entity which is ordered by best match. By best match I mean that the more of the filtered fields match the higher in the order the result is listed. I want this to work dynamically, so I can add more filters later on. I have been looking for a solution for a long time now and I didn't find an elegant way to do this with JPA. My approach is to concatenate all my predicates with or and then order them by how many of the fields match. This...

The custom token format is incorrect. Please check the documentation I'm trying to re-authorize a user after changing the password. But I am getting this error The custom token format is incorrect. Please check the documentation What could be wrong? I do every step in order: Change the password first I update the token I use a token for re-authorization still getting this error. Sometimes I get an error, something like You need to log in to change your password but I'm already logged in. Then I logout and login, and try to change the password again, but I...

Cannot access nested type through typealias I have a Quantity/Units library in Kotlin which has classes like Weight, Distance, Force. These classes inherit from a Quantity class and each contain a nested class Unit with information about the respective units for each type of quantity. As a kind of physical oddity, the consumption of an electric car (e.g. kWh/100km) is technically the same dimension as a force, so the Force.Unit class contains both NEWTON and KILOWATTHOUR_PER_100_KILOMETERS. Of course, we use FuelConsumption for...

USB Serial Kotlin I am looking for an Android USB-Serial example in Kotlin. Almost every example I have found is in Java, which I suppose is still ok, but I haven't been able to compile any of them successfully. I am quite new to Android / Kotlin, and just want to get the most basic send and receive going from my phone to a USB device over an OTG cable. Any help / pointers / suggestions gratefully received. Thank you Garrett

@Autowired not working inside testcontainers I am using test containers to make integration tests with the MSSQLServer image and when I am trying to inject my repository I am recieving the following error: lateinit property modelRepository has not been initialized And this confuse me because I'm using the same path I used to create the test but using a postgress database in another project. My test archive: package *.models.integration import *.portadapter.repository.ModelRepository import *.builders.ModelBuilder import...

kotlin-reflect-1.6.10.pom:2:1: Content is not allowed in prolog VS code As I am new in Flutter Dart ,When I am trying to build demo flutter app in my Android Phone in Android Studio OR VS code I keep getting this error, FAILURE: Build failed with an exception. * What went wrong: Execution failed for task ':app:compileDebugKotlin'.

Could not resolve all files for configuration ':app:kotlinCompilerClasspath'.

> Could not resolve org.jetbrains.kotlin:kotlin-script-runtime:1.6.10. Required by: project :app >...

How to parse this date/time in Java/Kotlin? I have this NMEA timestamp: 120722202122 and I want to parse it. I tried import java.time.LocalDateTime import java.time.format.DateTimeFormatter fun main() { println(LocalDateTime.parse("120722202122", DateTimeFormatter.ofPattern("DDMMyyHHmmss"))) } Playground but I get an Exception: Conflict found: Field MonthOfYear 1 differs from MonthOfYear 7 derived from 2022-01-12 I don't know what the Exception wants to tell...

Understanding Haskell realToFrac function I meed to migrate some Haskell code to Kotlin and I have some confusion trying yo understand the next code: floor ((realToFrac minutes :: Double) / 60) minutes is a integer value, my Kotlin code, looks like this: floor((minutes / 60).toDouble()) But I am not getting the expected results. I think I am missing the realToFrac part. I do not have Haskell experience. If it possible could you give me some idea of this line of code in another language such Java or JavaScript.

Kotlin Mockito veirfy not invoked in a coroutine test I got an error while doing a kotlin coroutine test. I'm pretty sure the function is called because I saw the logs. I'm not sure what does the error message mean. Is this related to coroutine (running on different thread) or the context (using a customized context to trigger onStart)? Wanted but not invoked: testActivity.fetch(); -> at com.example.cws.testActivity.fetch(testActivity.kt:322) However, there was exactly 1 interaction with this mock:...

ComposeUI: More convenient way to create this layout with lines connecting several composables What do I want to achieve? I want to create the following layout. It is important that the vertical "connecting" lines go inside the numbered boxes: What did I already try (first, naive approach)? I created the layout using a composable and a few lines. The numbered boxes get a boolean parameter which indicate if the top or bottom lines inside the box are shown. There also are vertical lines between the composables...

Running Sum of 1d Array in kotlin Hey guys I am learning data structure. I am trying to solve a problem of leetcode. Given an array nums. We define a running sum of an array as runningSum[i] = sum(nums[0]…nums[i]). Return the running sum of nums. Example 1: Input: nums = [1,2,3,4] Output: [1,3,6,10] Explanation: Running sum is obtained as follows: [1, 1+2, 1+2+3, 1+2+3+4]. I tried my solution and it working fine and I understand all stuff. My solution class Solution { fun runningSum(nums: IntArray): IntArray {...

How could the text written in editText modify the progressbar in Kotlin in Android Studio? I'm trying to make the progressbar interactive with the editText. When the number written in EditText is greater than 10 the progressbar increases by 10%. The code I wrote doesn't work of course but I don't see how to do it: class MainActivity : AppCompatActivity() { override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) setContentView(R.layout.first_gamble) val progressbar = findViewById(R.id.progressBar) val converter =...

How to execute shell command in Kotlin and get return value from shell [Android] I am able to execute shell commands (that has a return value) in Kotlin [Android] using the following lines of code: fun getFrequencyLevelsCPU0(): Unit { val process: java.lang.Process = java.lang.Runtime.getRuntime().exec("su -c cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_frequencies") process.waitFor() } The above lines of code are capable of running the shell command but the output of the command should be something as follows if the command was...