Use a custom class for the value of TextField does not survive across re-composition In the code below, the TextField that takes a mutableStateOf("") works as expected: The TextField shows whatever I type in. However, if the TextField takes StrHolder.s as the value. The TextField does not show anything I type. Why is that? class StrHolder(var s: String) Column { var text by remember { mutableStateOf("") } TextField( value = text, onValueChange = { text = it }, ) var strHolder by remember { mutableStateOf(StrHolder("")) }...

Set RadioGroup selected RadioButton by value of String Since Kotlin does not support traditional for loop is there a way to select a RadioButton in a RadioGroup if the String x value matched the RadioButton text? Something like this will work on Java but not in Kotlin for(i...radioGroup.childCount){ int radioButtonID = radioButtonGroup.getCheckedRadioButtonId(); View radioButton = radioButtonGroup.findViewById(radioButtonID); int idx = radioButtonGroup.indexOfChild(radioButton); } Then something like this code to...

How to open a fragment from another fragment/adapter where both are part of same bottom navigation bar in Kotlin? I have a BottomNavigationView in my app and that contain four fragments. I wanted to go to 'fragment3' when I click a button in the recyclerView of the 'fragment1'. I tried the following way but it's not navigating to the bottom menu of 'fragment3', instead it loaded the 'fragment3' in the same bottom menu of 'fragment1'. Following is what I have in the onBindViewHolder of the adapter class of the 'fragment1' holder.binding.btnGoToCart.setOnClickListener { val activity=context as...

How to do many destinations in RecyclerView Adapter? I'm trying to do complex implementations in one thing: Create Navigation inside RecyclerView.Adapter Using String Resources to convert it to Id To be same Id's in navGraph and what prepared in data class by parameters of Model class. So, item is a property from dataset which is a List. And that means all item.subSectionSrcID are String Resource Id's. holder.list is Id of TextView. context is a parameter property inside constructor of SubSectionViews(): RecyclerView.Adapter() class....

Call function/method of the target fragment when navigated using Fragment Navigation (nav graph) currently my app has one activity with two fragments, One is HomeFragmentand the other is SearchFragment. I am using Fragment Navigation to navigate between Fragments. In the SearchFragment, I am asking the user to provide the value that he/she wants to search. Once done, I want the app to navigate back to HomeFragment and perform the search. For that purpose, I created an Interface and build a method in SearchFragment called addListener()to set that listener. Not to navigate from...

Jetpack compose preview crashes with hiltViewModel<>() I use compose version 1.1.0-beta03 and hilt-navigation-compose:1.0.0-beta01. this is my Composable code: fun EngagementBotChart(modifier: Modifier = Modifier) { val newHomeViewModel = hiltViewModel() AndroidView( modifier = modifier.fillMaxSize(), factory = { context -> }, update = { view -> } ) } it works fine when I build the project but this is what occurs in compose preview: java.lang.NoSuchMethodException:...

Is it possible to have a field with a generic type that refers to the actual runtime type of the containing class? I'm fiddling around with this code where I have a base class Node which can be extended: open class Node class SubNode : Node() Now, I have a Behavior class that can be attached to a node, and when this attachment happens, the behavior object is invoked: open class Behavior { fun attach(node: Node) { println("Behavior was attached to a node") } } open class Node { var behavior: Behavior? = null set(value) { field = value...

I can not use livedata on databinding I'm trying to reach my value as livedata in xml but I getting this error " java.lang.RuntimeException: Failed to call observer method" and "Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'int java.lang.String.length()' on a null object reference" Xml file viewHolder class DetailViewModel(private val satelliteRepository: SatelliteRepository) : BaseViewModel() { private val _satelliteLiveData = MutableLiveData() var satelliteLiveData:...

Which one is view-binding? This is the code showing for me: fun onclick(view: android.view.View) fun onclick(view: View) What's the difference between these.

Listener for clicking on any area of ​the SearchView I have a SearchView and I am using navigation components. I made such logic that when I click on the search button on the keyboard from fragment A, there is a transition with the transfer of the SearchView text to fragment B. And here I am in fragment B, and the text from SearchView in fragment A was passed to the input field of SearchView in fragment B, and now I need that when I click on any area of ​​the SearchView, it will go back to fragment A, while android: iconifiedByDefault = "false"...

When adding LinearLayout to ConstraintLayout, TextViews disappear I made a LinearLayout template xml, it has an ImageView and 2 TextViews in it, and I am trying to add it to my ConstraintLayout programatically. If I add it to a LinearLayout: val layout: LinearLayout = root.findViewById(R.id.linearLayoutBlockSequence) val inflater = LayoutInflater.from(context) val linearLayout = inflater.inflate(R.layout.linearlayout_block, null, false) as LinearLayout linearLayout.id = View.generateViewId() layout.addView(linearLayout) It works fine: But when I add it...

Android - gesture - run onDoubleTap gesture and prevent onLongPress afterwards I have a gesture recognizer with override methods onLongPress and onDoubleTap. However, when user does a double tap and keep the finger on the screen, onLongPress is also called. Can this be prevented? My current idea is to create bool variable that is set in onDoubleTap and checked in onLongPress, however, I am not sure how to "unset it". Is there anything like block further gestures after one is performed?

Escaping strings in kotlin to run my os command So here is a bit of a tricky one. I've just finished writing myself my first Kotlin script to execute some os commands for me and it works on a basic command. val command = "kubectl get pods" println(command) execLocal(command) fun execLocal(command: String): String { try { val commands = ArrayList() commands.add("powershell.exe") commands.add("-Command") commands.add(command) val pb = ProcessBuilder(commands)...

Firebase Authentication with Google Sign in is not working I want to add firebase google sign-in to my app and I implemented all codes according to this link: https://firebase.google.com/docs/auth/android/google-signin but it's not working all functions is deprecated, still when I go with the deprecated function nothing happens no Google page pops up. anyone, please guide me?

how can I get multiple query responses in php? Hello everyone and thanks for reading. I'm using php to receive some queries in an android app, but I only know how to receive only one object from an array, I don't know how to receive the entire array. This is what I have done in my php document.

Wyh I can not upload file to Firebase Storage I'm trying to upload jpg file to Firebase Storage. Here is my issue: fun sharePost(view: View) { val uuid = UUID.randomUUID(); val uniqueImgName = "${uuid}.jpg" val imgReference = storage.reference.child("images").child(uniqueImgName) selectedImage?.let{ imgReference.putFile(it).addOnFailureListener { e -> println(e.localizedMessage) }.addOnSuccessListener { println("passed") }...

Location permission check always get denied on samsung note 20 even the user grant it I'm trying to get location access on my app and it works fine but I found that Samsung note 20 has issue with location permission, when the user allow location permission my app gets the result of it as denied always, here is my check of location if (ActivityCompat.checkSelfPermission( activity, Manifest.permission.ACCESS_FINE_LOCATION ) == PackageManager.PERMISSION_GRANTED || ActivityCompat.checkSelfPermission( activity,...

Jacoco 0.8.7 coverage data is invalid. Error I am using jacoco 0.8.7 and for some classes I am getting this error when I try to export jacoco xml to Sonarqube. Cannot import coverage information for file 'src/main/java/com/some/package/MyClass.kt', coverage data is invalid. Error: {} java.lang.IllegalStateException: Line 88 is out of range in the file src/main/java/com/some/package/MyClass.kt (lines: 87) at org.sonar.api.utils.Preconditions.checkState(Preconditions.java:61) at...

Unresolved reference: toDoubleOrNull , ceil and few other errors are shown in Android studio Unresolved reference: toDoubleOrNull , ceil and few other errors are shown in Android studo. It is running without any issues but it is higlished in red and showing as reference issue. can someone help me to get rid of these errors? Full Code: package com.yosuva.tiptime import android.os.Bundle import androidx.appcompat.app.AppCompatActivity import com.yosuva.tiptime.databinding.ActivityMainBinding import...

How to parse response with jackson using ktor? I have this dependencies: implementation("io.ktorktor server core$ktor_version") implementation("io.ktorktor jackson$ktor_version") implementation("io.ktorktor server netty$ktor_version") implementation("ch.qos.logbacklogback classic$logback_version") implementation("io.ktorktor client cio$ktor_version") implementation("io.ktorktor client json$ktor_version") And this settings of ktor server: fun Application.configureHTTP() { install(DefaultHeaders) install(CallLogging)...

please help - why do I not get the result? I have the first app: class MainActivity : AppCompatActivity() { lateinit var v_butt1: Button lateinit var v_text1: TextView lateinit var appintent: Intent lateinit var pack: String lateinit var schl: String lateinit var wert: String val getResult = registerForActivityResult( ActivityResultContracts.StartActivityForResult() ) { if (it.resultCode == RESULT_OK) { val value = it.data?.getStringExtra("retu")...

Items in ScollableTabRow has additional padding I"m using ScrollableTabRow() to display some items. As you can see there is a padding between my items. I don't know what's wrong. How I can reduce that space between items? I tried to set all padding to 0.dp etc but it didn"t help. Is it Jetpack Compose bug or something wrong is with my code? Btw is there any better solution to display list which is scrollable horizontally Box( Modifier .padding(horizontal = 8.dp, vertical = 2.dp) .fillMaxWidth()...

Instantiate viewModel with run-time arguments using Hilt What I'm doing I'm implementing oauth2 process to my android app. After user authorized the app via browser, my app will launch an activity to retrive the authorization code from intent, and then use the code to get the access token for APIs. I have a method in viewMomodel with repository injected, to proceed the get access token API: @HiltViewModel class MainActivityViewModel @Inject constructor( private val repository: AuthRepository ) : ViewModel() { fun getAccessToken(authCode:...

ViewModel observer not getting updated in Jetpack Compose I have a VideoModel as below: class TripPlannerViewModel(application: Application) : AndroidViewModel(application) { val trips:MutableLiveData by lazy { MutableLiveData().also { Log.d("TRIP_DEBUG", "VM initialized") TripPlannerRepository.loadAllTrips(object: OnTripsUpdated { override fun onTripAdded(trip: Trip) { Log.d("TRIP_DEBUG", "Trip added") setTrips(getTrips()) } override fun onTripChanged(trip:...

Error returning value addOnSuccesListener Kotlin I am devoling a restaurant review app. I am trying to check if an user has already posted a review of a restaurant. I have the function fetchIfDataExist which access to the Firebase Database and check if an user already has a review of a restaurant, if so, the value of existingReview is changed to true. The problem is that the function works properly and changes the value of existingReview to true but I don't know why the if else statement after Log.d("URL_DEBUG", "fuera: $existingReview")...

Effect of using GlobalScope.launch while using coroutine 1. I am using: override fun updateNotification(mediaSession: MediaSessionCompat) { if (!PlayerService.IS_RUNNING) return GlobalScope.launch { notificationManager.notify(NOTIFICATION_ID, buildNotification(mediaSession)) } } I could use: override fun updateNotification(mediaSession: MediaSessionCompat) { if (!BeatPlayerService.IS_RUNNING) return CoroutineScope(Dispatchers.IO).launch { notificationManager.notify(NOTIFICATION_ID,...

How to color diagonal list item of recyclerview grid layout manager of span count of 2 I need to color list item diagonally of grid layout manager of span count 2 for example: color 0th, 3rd,4th,7th, 8th and so on position in One color color 1th, 2nd, 5th, 6th, 9th,10th and so on position in another color Please provide any logic for this for coloring item of recyclerview I also attach corresponding image also In this picture item next to hindi is has to color as item english is colored Thanks in advance

how to change greeting textView i.e, Good morning or Good night in Android studio using Kotlin I am making an app in kotlin language. I want to change that Good morning textview to good evening when time is between 4 pm to 8pm and goodnight when time is in range of night time and agin to good morning when time pasts 12 am. how can i do it in kotlin?

Pausable handler alternative So what I need is to update a textview every second, but also I need a possibility to pause the process and restart it from where it stopped. What I checked so far are handler, timer, different executors, but neither of them gives an instrument to pause it, only to cancel. I'd be very glad if anyone has a suggestion.

How do I create a GitHub Action that runs unit tests in a Kotlin Android app? In my Kotlin Android app, I run a Gradle command on my machine to execute automated tests: ./gradlew test How do I create a GitHub Action that does this for me so that I don't unwittingly merge broken or buggy code into my main branch.