How to initialize lambda variable in buildModels() when using epoxy? I'm using Epoxy instead of RecyclerView, and I'm trying to add a lambda that will be executed on click in the properties of the model. However, addTo() is not called after the listener is initialized in buildModels() of the Controller. How do I fix it? Model @EpoxyModelClass(layout = R.layout.item_routine) abstract class EpoxyRoutineModel() : EpoxyModelWithHolder() { @EpoxyAttribute var workout: String = "see" @EpoxyAttribute lateinit var listener: (Int) -> Unit override...

JSONArray cannot be converted to JSONObject Value ["1"] I have created JSONRequest by using volley ussing this tutorial https://www.tutorialspoint.com/how-to-use-volley-library-to-parse-json-in-android-kotlin-app Blynk APi returns this "1" i have this error Caused by: org.json.JSONException: Value ["1"] of type org.json.JSONArray cannot be converted to JSONObject private fun jsonParse() { val url =...

appUpdateInfo.updateAvailability() always return 1 I have two devices, one is Xiaomi and the other is a Samsung. I developed in app update with play core and I test it in beta version. In my xiaomi device it works the way it should but in Samsung the message to update never shows up. appUpdateInfo.updateAvailability() always return 1 even when there's a new update. appUpdateInfoTask.addOnSuccessListener { appUpdateInfo -> if (appUpdateInfo.updateAvailability() == UpdateAvailability.UPDATE_AVAILABLE &&...

How to create Tablayout with date? I want to create Tablayouts with date, when you swipe left you got coming days and when you swipe right you got previous days( somthing like picture below) but since I'm new to android(kotlin) I'm not sure how to do so, I thought about dynamically creating fragments each time the user swipes the tabs gets the date from the Date class.. but I want to do it the right way if there is any. I would appreciate it to know at least the right path to start or the main points that I should Know to get...

How should I navigate with sub and sub sub views in jetpack compose? I am wondering how I should set up "navigation" regarding sub and sub sub.... - views in jetpack compose. When I have a view regarding settings on a complex model which forks out into alot of minor views which can further fork out. Should I just use the same NavHostController that I use to navigate between all other views in the app? The bad thing is that this navigation configuration is getting super big and unmanagable I have access to all my viewmodels in this one. (I might be able to use...

In the code, the type of the lambda is mismatched, how does it work? I'm using the Epoxy library on Android. What I'm curious about is why the parameter of the lambda expression doesn't get an error when the type doesn't match. The listener is a lambda expression that takes an Int type as a parameter. But listener(addDetailClicked) works normally. Shouldn't it be listener(Int)? or listener({ i -> addDetailClicked(i) }). Actually, I don't know why it works even after I write the code. How is this possible? Model @EpoxyModelClass(layout = R.layout.item_routine)...

Compose Compiler requires Kotlin version I made a Kotlin Multiplatform Mobile project using android studio and ran into the following error after importing SQLDelight: e: This version (1.0.1) of the Compose Compiler requires Kotlin version 1.5.21 but you appear to be using Kotlin version 1.5.30 which is not known to be compatible. Please fix your configuration (or

suppressKotlinVersionCompatibilityCheck

but don't say I didn't warn you!). I followed <a...

FirebaseAuth still coming null in Kotlin Firebase Retrofit Room App I was developing an App in Kotlin, where I implement Firebase Retrofit and Room library for differents purposes. So my problem comes when I try to called the FirebaseUser, in order to search into the room database, where is saved the user name, and load the information regarding him/her. My firebase user is null, regardless how much wait. The fragment where the exception occurs is this: DiaryFragment.kt class DiaryFragment : Fragment(R.layout.fragment_diary),...

How do I fix a NullPointerException on Kotlin? I am a beginner in programming and I am trying to solve a math problem on Kotlin. The problem is: "Challenge -> You must read 5 integer values. Then show how many reported values ​​are even, how many reported values ​​are odd, how many reported values ​​are positive, and how many reported values ​​are negative. Assume that the number zero is positive, but it cannot be considered positive or negative. Input -> You will receive 5 integer values (-5, 0, -3, -4, 12). Exit -> Display the message...

how to call a function in kotlin from a String name? Given a list of String names, is it possible to call the proper method dynamically from a specific value? In the example, the invokeMethod is made up but it would be what I need ideally. The first parameter is the method name to call and the second one the list of parameters. class MethodPicker() { val commands = listOf("foo", "tango") fun messageReceiver() { messageParam : String = "Hi stackoverflow!" invokeMethod(commands.random(), messageParam) //HOW TO DO THIS IN...

Is it possible to inject a conditional class( based on a parameter from the previous fragment) into a view model? I'm using Hilt. I want to inject a subclass of Foo into my hilt view model. All subclasses of Foo depend on different class that is already using an @Inject constructor and can be injected into view models, activities, etc. But not into my subclass, so I'm using EntryPoints to inject them. Also, which subclass gets injected depends upon a property I'm getting from the previous fragment via the SavedStateHandle Hilt provides the view model. Is it possible to create a Factory (or another...

Why cannot I create extension to BigDecimal in Kotlin? I am trying to create an extension as a property and I experimented with an extension function as well, below an example for BigDecimal: val BigDecimal.HUNDRED: BigDecimal get() = TEN.multiply(TEN) fun BigDecimal.HUNDRED_ONE(): BigDecimal { return TEN.multiply(TEN) } It seems that Kotlin recognizes neither HUNDRED nor HUNDRED_ONE(). I am using Kotlin version 1.5.21. Am I doing anything wrong on Kotlin version 1.5.21 that doesn't work correctly? I have used this functionality before...

Convert the list to String from JSON response I am getting a list from the json response that I want to convert to strings. String fruits = remoteMessage.getData().get("fruits"); The above line gives me the following response, ["California Apple","Mango","Mexico Original Banana"] Now, what I need is, "California Apple", "Mango", "Mexico Original Banana" How could this be achieved?

How can I print data types in Kotlin this problem need print data types enter link description here but he need inputs on just one line with space between each data type this is my code , what's the problem import java.util.Scanner fun main(args:Array){ val scanner = Scanner(System.

in

) var a:Int=readLine()!!.toInt() var b:Long=readLine()!!.toLong() var c:Char=scanner.next().single() var d:Float=readLine()!!.toFloat() var...

Convert XML Layout To Jetpack Compose after API Get Request with Retrofit2 and OkHttp3 I have an app that I'm converting to Jetpack Compose. I'm hoping to create a card layout with Jetpack rather than using the current XML file I have. I'm not sure how to handle the response from the GET request call I make to the api and parse the data into Jetpack rather than the XML layout. MainActivity.kt class MainActivity : AppCompatActivity() { override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) setContent {...

Why is rememberSaveable variable flagged as unused by Android Studio Arctic Fox? Android Studio Arctic Fox (Patch 3) flags, "The value true assigned to var isVisited: Boolean in the following composable as being never used": @Composable fun MainView(navController: NavController) { var isVisited by rememberSaveable { mutableStateOf(false) } if (!isVisited) { isVisited = true // never used? navController.navigate("NextView") } Button(onClick = { navController.navigate("NextView") }) { Text(text = "MainView")...

Kotlin Jetpack Compose - Drawer Resizing Im currently having a Drawer and a Bottombar in a Scaffold Also the drawer should only show when clicked on a button in a certain activity The Scaffold itself cannot be part of the drawer class itself because it does push the buttons on the top of the screen, so my solution has been to just use the Scaffold in the Startscreen of the App (maybe you have a tip on how to improve here?) Anyways, My problem now is, that I have googled quite a lot but haven't found a good way to resize the drawer...

Why Picasso.get() can't display the image in android studio? Why Picasso.get() can't display the image in android studio? Picasso.get().load("").resize(200,200).into(imageView1)

why ide says "Value captured in a closure" when I'm using flatMap but maping then flatten doesn't in kotlin? inline fun batchQuery( paramsToBeChunked: Collection, batchSize: Int = 500, crossinline queryAction: (params: Collection) -> List ) = paramsToBeChunked.chunked(batchSize).flatMap { queryAction(it) } // Value captured in a closure inline fun batchQuery( paramsToBeChunked: Collection, batchSize: Int = 500, crossinline queryAction: (params: Collection) -> List ) = paramsToBeChunked.chunked(batchSize).map { queryAction(it) }.flatten() is there any potential problem...

Coinbase wallet development using walletlink sdk I'm developing a coinbase wallet and trying to use walletlink mobile SDK. But I got error after I import this project. I had tried many solutions to deal with the issues. Including install different version gradle or Android studio but none of these could not fix the...

what is the correct way to change the app status bar white and status bar black in color in android? Change my app status bar color to white and status bar icon color to black if (Build.VERSION.SDK_INT >= 21) { getWindow().getDecorView().setSystemUiVisibility(View.SYSTEM_UI_FLAG_LIGHT_STATUS_BAR); getWindow().setStatusBarColor(Color.WHITE); } Since, setSystemUiVisibility() is Deprecated and my minSdk version is 21 and targetSdk version is 31 How to achieve this? Thanks in advance

Issue with the method that returns List when there is no data exists in Room database table I have below method in Room database dao, which is working fine when there is a data in table. The issue is when there is no data in table. @Query("select MAX(id), * from " + DatabaseConstant.mFirmwareTable + " where batteryId= :batteryId") suspend fun retrieveSpecificFirmware(batteryId: String): List So, here you can see that Its returning list of Firmware data. But When there is no data in database I am getting below error : Process: com.dev, PID: 28592 java.lang.IllegalArgumentException:...

How to chanhow to change from currentuser uid to id receipts I have a problem because I want to be in my storage and a photo from the id of my receipt from firestore has been added. I want this id from the firestore to be the currentUser id this code: fun uploadReceiptPhoto(bytes: ByteArray) { storage.getReference("receipts") .child("${auth.currentUser!!.uid}.jpg") .putBytes(bytes) .addOnCompleteListener{ Log.d(SCAN_DEBUG, "COMPLETE UPLOAD PHOTO") }...

@SerializedName val can not be initialized in constructor Here I have a POST request using Retrofit2 returns a json String that has a field named "messageCode" and there is a BaseResponse class that defines a "val code" with @SerializedName("code") and it's read only. open class BaseResponse(@SerializedName(value = "mc", alternate = ["code"]) val code: Int) So I write a class extends BaseResponse and take that "messageCode" then give it to the "code" in super like this: class MyConcreteResponse( messageCode: Int?, val data: List? )...

Firebase Android : lateinit property database has not been initialized i followed firebase docs to use realtime database. this is my activity class MainActivity : AppCompatActivity() { private lateinit var binding: ActivityMainBinding private lateinit var auth : FirebaseAuth private lateinit var database: DatabaseReference override fun onStart() { super.onStart() init() } override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) binding =...

Got an issue react-native-screens:compileDebugKotlin FAILED when I tried to run the app Task react native screenscompileDebugKotlin FAILED w: Java source root points to a non-existent location: C:\Users\bragadeeshvar.gk\OneDrive - ASG Technologies Group w: Java source root points to a non-existent location: Inc\Desktop\WorkSpace\ReactNative\React-Native-Navigation6\node_modules\react-native-screens\android\build\generated\source\buildConfig\debug w: Runtime JAR files in the classpath should have the same version. These files were found in the classpath:...

WebP is pixelated I'm struggling with a problem about pixelated images. I download logo of Amazon(PNG) then I moved it to my Android project files and converted to WebP. The problem is that image it's pixelated Image( painter = painterResource(id = R.drawable.amazon), contentDescription = "", modifier = Modifier .align(Alignment.Center) .matchParentSize() .scale(3F, 3F), contentScale = ContentScale.Fit ) <a...

Key permanently invalidated exception biometric authorization Android Im trying to implement biometric authorization in Android app. I followed android official documentation and it was worked everything fine until today, so when I removed finger print and add new one, now its throwing exception, I tried to put try catch in getOrCreateSecretKey but it was same :( android.security.keystore.KeyPermanentlyInvalidatedException: Key permanently invalidated private class CryptographyManagerImpl : CryptographyManager { private val KEY_SIZE = 256 private val...

GetFusedLocationProviderClient returning null latitude and longitude values for users' location For an app I'm making, I need to get the users' location which will then be displayed on the map. To achieve this, I am using LocationServices.getFusedLocationProviderClient() in the code below. When I get the location value in addOnSuccessListener, the latitude and longtitude values are null for some reason, so I'm getting a NullPointerException: import android.Manifest import android.annotation.SuppressLint import android.location.Location import androidx.appcompat.app.AppCompatActivity...

LiveData.value returns Null But Livedata Direct Observe it getting result LiveData.value always returning null but Live data observe data getting output successfully