Divider decoration for constraint layout flow helper children As you may know, you can set a RecyclerView.ItemDecoration for RecyclerView's Items. However, I want to achieve something similar to that but for ConstraintLayout's Flow. Currently, I can create multiple divider views and put them inside my flow after each normal view but that can be cumbersome when my Flow has multiple views and that's not DRY and is an example of repeating yourself. Also, it's worth noting that you cannot reference the same view more than once in Flow so you cannot create a...

What are all possible ways to design a converter class in Java which converts between data types based on Logic? I have multiple classes for which I need to convert them to a string or Android's scannable string. Right now, I have just created an interface which is called TextGenerator. Whenever I want to create a text generator for new class, I just implement TextGenerator like below, let's say my class is User interface TextGenerator { fun generate(data: T) } class UserTextGenerator: TextGenerator { override fun generate(data: User): String } I know that different people will have different...

Press back to go base fragment with kotlin I have two fragments; HomeFragment & NextFragment and I go to the next one with a button from the base fragment. Then via back press I want to go back to the first one, however I end up at the apps home screen. A solution requireActivity().onBackPressedDispatcher .addCallback(viewLifecycleOwner, object : OnBackPressedCallback(true) { override fun handleOnBackPressed() { findNavController().popBackStack() } }) was...

xAxis in MP Android Chart getAxisLabel(value: Float, axis: AxisBase?) value showing negative -1 Urgent!! How to solve the problem where the value in xAxis Mpcharts is -1? Because of this problem, my first array in xAxis is not showing.. inner class MyAxisFormatter : IndexAxisValueFormatter() { override fun getAxisLabel(value: Float, axis: AxisBase?): String { var xValue = "" val index = value.toInt() Log.d("Main Activity", "value: " + value) xValue = if (index < Month_AmountArrayList.size && index > 0) {...

How can I control other application in my phone I am a beginner in programming Android applications in Java. I want to know how to control or change something, for example, cut off the Internet on another application. Is there a way or suggestion. Thank you

Test case for verifying intent override fun getLaunchIntent(context: Context, params: Map): Intent { return when (params["Activity"]) { "OneActivity" -> Intent(context,OneActivity::class.java) "TwoActivity" -> Intent(context, TwoActivity::class.java) else -> Intent(context, ThirdActivity::class.java) } } When we pass OneActivity as param, we need to verify that Intent is getting called/created. Can you guide me on this.

How to pass a parameter from Activity to BottomNavigationBar fragment using Kotlin? There are actually many articles with the same question as mine however the majority of them are not using Kotlin and also my style of launching the BottomNavigation fragment seems to be different. To make my situation abit more unique, I am actually trying to pass a bluetooth device over to the fragment, but I am guessing the method is the same. On the fragment side, based on research from many other stackoverflow atricles(<a...

Kotlin can't add or remove to the Arraylist Hello I have a class and there is a method in this class.The method creates random int values and I call my method in my fragment in while loop.The problem is I'm trying to add those values to an arrayList but It doesnt work(arrayList.Add code works in fragment in while loop but arrayList in class).I'm trying to add those values to an arrayList and use them in a textview in my fragment but It only returns default values.Here are my codes ; MY CLASS; open class Player { //property private var...

How to draw line with corner radius box using canvas I want to draw line of box with box corner radius. Expected Output But what i get Code @Override protected void onDraw(Canvas canvas) { if (bytes != null) { int[] gradientColors = new int[]{ Color.parseColor("#B3F90403"), Color.parseColor("#B3E7D104"), Color.parseColor("#B317A300") }; float[] gradientColorPos = new float[]{ 0.33f, 0.66f, 0.99f };...

how to create WebView like this [closed] how can to create WebView like this. it is possible in native developement

Displaying LiveData from Room in Activity (Android Studio kotlin) Im trying to display the LiveData (all Devices) in a LazyColumn item list in my Activity. However I dont get the Data from my Room DB in my Acitvity. DeviceDao: Here I make the query to get all Devices from my Room DB @Query("SELECT * FROM DeviceData ORDER BY id ASC") fun getAllDevices(): LiveData DeviceRepository: val readAllData: LiveData = deviceDao.getAllDevices() DeviceViewModel: private val repository: DeviceRepository private val readAllData: LiveData init { val deviceDao =...

Is there a way to nest a LazyVerticalGrid iniside a vertical scrollable view in Jetpack Compose I'm trying to show a LazyGrid of items within a main screen that has a scrollable content. I tried to set up the screen as follows: @Composable fun MainScreen(){ ConstraintLayout(Modifier.verticalScroll(remeberScrollState())) { val (view, rowView, image, gridView) = createRefs() Row(){ //view } Row (){ //rowView (a lazy row) } Row() { //image } Row() { //gridView } } } Compose had no issue with the other views but once I included the grid...

packageManager.hasSystemFeature(PackageManager.FEATURE_WIFI_RTT) always returns false I was trying to make a flutter plugin package to learn if device has Wi-Fi RTT scan support. After I tried the code on a few physical device I got always false. Than I took a look at supported phones and saw Pixel 4 is supporting this feature. And then I created an emulator which runs Pixel 4 and tried code and got false again. This is kotlin side: package...

Starting a service that records sensor data in Kotlin Android App I'm creating an android app which uses a telematics SDK to start recording driving activity when the SDK picks up that the user is driving. The SDK runs in the background, and has full access to location data in the background in order to do this. I have created a class which extends the main tracking receiver class of the SDK and I'm overriding a specific function, called 'onStartTracking' which was successfully running when the app picks up that the user is in a vehicle and moving. Now, in...

How to access property from class that extends T when getting generic Class&lt;out T&gt; in Kotlin I have an abstract class called Event which has an abstract variable handlers. The class MessageEvent extends the Event class and initialises the handlers variable. My plan is to have several different classes that extend Event, so this function takes a Class generic type. How do I access this initialised handlers variable when the class is passed to the function as a generic? My goal is to get something that works like Bukkit's plugin manager, I'm trying to create an events system that works...

What's the cleanest way to create dynamic layout according to selected item in a spinner? Im trying to figure out, what is the cleanest solution to arrange a layout according to the item selected in my spinner. In my spinner i have values representing pace for running MAS (max aerobic speed) - 800m - 1500m - 5000m - 10 000m - Half marathon & Marathon and for each of those the layout displayed gonna change. For example if it's MAS selected there will be time indicator for 100m-200m-400m-1000m and various percentage for those distance like 85% - 90% - 100% - 105% so close 16 label +...

Google Overlay - Maptiles are showing in wrong place I have stored Google Map tiles in local storage and displaying them on google map as Map overlay using this code: TileOverlayOptions().tileProvider( CustomMapTileProvider( requireContext(), folderName ) ) I am using custom map tile provider as below to get map tiles from storage: private fun readTileImage(x: Int, y: Int, zoom: Int): ByteArray? { var `in`: FileInputStream? = null var buffer: ByteArrayOutputStream? = null return try...

How do I change the visibility from "gone" to "visible" in Android Studio? So I've been slowly teaching myself how to code in Kotlin, and I've been adding buttons etc with no issues, some time has past now and I want to add a new button to my project, however when I try to add it, it refuses to display in the emulator. Looking at the Layout Inspector, it appears that the visibility is set to "gone" despite it actually being set to "visible" in the code. How can I fix this?

Unable to find Acitivty When I am calling an on click event on an element from a recyclerview it throws an exception and I am wondering what i could be doing possibly wrong? the method for the image gallery the exception android.content.ActivityNotFoundException: Unable to find explicit activity class {com.example.applicationtest/com.example.applicationtest.SecondaryActivity}; have you declared this activity in your AndroidManifest.xml? fun loadImages(){ recyclerView!!.setHasFixedSize(true)...

Extract common objects from sealed class in kotlin I have two data classes e.g. sealed class API1Status { data class Success( val name: String ) : API1Status() sealed class Error : API1Status() { object API1FAiled : Error() object SystemError : Error() object ServerError : Error() object InvalidRequest : Error() } } sealed class API2Status { data class Success( val name: String ) : API2Status() sealed class Error : API2Status() { object API2FAiled :...

Reading from a YAML file in Kotlin I'm having a hard time trying to figure out how to read a YAML file in Kotlin. In short, the YAML has the following format: aws: foo: dev: id: '1111' pro: id: '2222' bar: dev: id: '3333' pro: id: '4444' I have created these data classes: data class Account ( val id: String ) data class Owner ( val accounts: List ) data class Cloud ( val owners: List ) And then I try to parse the file with: val mapper =...

Sring boot reactive - register user Reactive programming is kind hard to understand for me. My use case - I would to register user (save it to DB) only in case the user with the given email doesn't exist in DB. I have method in kotlin in spring boot service fun registerUser2(userDto: UserDto): Mono { return personalUserRepository.findByEmail(userDto.email!!) .switchIfEmpty( personalUserRepository.save(toEntity(userDto)) ).flatMap { Mono.empty() } } then in Controller i want...

Struggling to access Spinner outside of my recycler view I have tried two different ways to access my spinner. Without success thus far. I want to load the data for each driver as chosen. To give an idea of my app. Code for adapter: class TableViewAdapter(var tripsheetlist: Tripsheetlist) : RecyclerView.Adapter() { override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): RowViewHolder { val itemView =...

How to change the color that is around the selected item in android studio bottom navigation bar in Kotlin? first time here. I'm very new to android development, and there is a little thing that is bugging me that I couldn't found the way to change the color that is around the selected item in bottom navigation bar. Like the purple color in picture below I tried changing the primary color(which is purple in default), and I also tried changing the itemRippleColor but it only change the outside of the selected item when clicked. This purple color lasts as long as the icon is selected. I also tried...

SQLDelight and data classes with one to many relations in Kotlin I am trying to create a small app using Kotlin Multiplatform where i can save book titles and their authors but i'm struggling with the data classes and how to map them together so that i get the author with all of their books and the publish date. CREATE TABLE book( id INTEGER NOT NULL, name TEXT NOT NULL, publishDate INTEGER NOT NULL, authorId INTEGER NOT NULL ) CREATE TABLE author( id INTEGER NOT NULL, name TEXT NOT NULL ) Here are my data classes: @Serializable data class bookEntity(...

Transfer data from room database to a local socket server Android Studio I have designed a room database in Android studio kotlin , now I have to get all data from the phone to computer using local socket server , is this possible? If yes how Designed the room database also created a socket server go run in the background , I have to just send the data as a whole or as a file

Migrate from NavHost to AnimatedNavHost Hi I'm trying to migrate my Android Studio project from NavHost to AnimatedNavHost, so I have made this changing: Replace rememberNavController() with rememberAnimatedNavController() Replace NavHost with AnimatedNavHost Finded on this blog: https://medium.com/androiddevelopers/animations-in-navigation-compose-36d48870776b And I don't add any animation, but when I try to...

How to get language by country, not the default one? I'm trying to get the country language of the user, not the selected one on the phone. For example: I'm building an English learning app, but in my phone I've set language to English for learning purposes, and it doesn't translate because it thinks that my language is English, but I live in brazil, I want it to find that my language is Portuguese. to get languages by especific location. I have tried some codes, but not seems to work. I have many users in my app that have English language on...

I want to add text to video using kotlin language in android. How can I do it.? I want to add text to video using kotlin language in android. How can I do it.

ShareStateFlow in Intelji plugin I have a ToolWindowFactory class like this class MyToolWindowFactory : ToolWindowFactory { private val sharedFlow = MutableSharedFlow(replay = 1) override fun createToolWindowContent(project: Project, toolWindow: ToolWindow) { CoroutineScope(Dispatchers.IO).launch { sharedFlow.emit("VALUE") } CoroutineScope(Dispatchers.IO).launch { sharedFlow.collectLatest { println("$it") } } } } I use...