How do we verify method that has lambda function as its argument? So I have this main() method that calls printResult() method and the printResult() has a lambda argument on second parameter like this: class SomeClass() { fun main(value: Int) { printResult(value){ it -> it + it } } fun printResult(value: Int, sum: (Int) -> Int) { val result = sum(value) println(result) } } Then in the unit test, I want to verify that every time the main() method is called, the printResult() should be invoked as well. So I...

Show battery level of connected bluetooth device [Kotlin] Is it possible to show the battery level of a connected bluetooth device? I'm making an app that monitors devices and it connects thru bluetooth. I know how to show current batterylevel of the monitor (in this case a tablet), but I'm not sure if it's possible to see other battery levels. If anyone has idea's, please comment! Thanks

Why some packages in flutter works with java while some work with kotlin I have faced this issue while building my app. lets consider two cases audioplayers 0.20.1 when i include java support in my flutter project audioplayers 0.20.1 package works well with it . but when i include kotlin support in my project it gives me errors while building the project. It works well with java but doesn't works with kotlin. fluttertoast 8.0.8 when i include kotlin support in my flutter project fluttertoast 8.0.8 package works well with it . but when i include java support in my...

How to intercept the HTTP status code of all requests in Retrofit I have a huge code base for an existing project, and it performs many requests all over the app. The issue is that I have to check for a specif error code of all requests to perform a specific action.! seems simple, but the only way that I can do this is to go on each request and check for that code inside the onError response, and that's gonna take make a lot of time to do because there are many requests on the app (50+).! Example of a request: fun getOrders() { // some code when {...

Android Seekbar - put all seekbar at 0 when you increase a seekbar I have created an application with 3 search bars in an activity page. I want to set all search bars to 0 when I move a search bar, as shown in the image. I tried to do it as a group of togglebutton but it doesn't work. override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) setContentView(R.layout.activity_options_page) image_lightr.setOnClickListener {...

image quality improve by API or SDK image quality improve by API or SDK, want to create an App that can upload images to make the batter quality, radius blur, clear focus, text improvements

Android Jetpack Compose set modifier properties as percentage of device width or height I want to be able to set all Modifier properties as percentage of the known device width or height. The idea is that there is no need to support different screen sizes for all phones - small, medium or big phones. All phones should have the same composable size related to the current device width or height. And we should only implement different screen sizes for tablets or landscape mode. I know that for width, height we can use .fillMaxWidth(0.9f), and set float value [from = 0.0, to = 1.0]...

Items are not showing in Firebase Analytics I am facing issue with Firebase Analytics. I have integrated events in my Android app as per the documentation (https://firebase.google.com/docs/analytics/measure-ecommerc) and it is sending logs successfully. But I found issue with Firebase Console. Issue: Items are visible in the DebugView but not showing in Realtime. Items are not showing in Top Events. Is there any thing we need to take...

Kotlin reflection fails to return function after update to version 1.6.10 I have the following kotlin property declared in a class of my Android app: private val updateRef: KFunction by lazy { dao::class.functions.find {it.name.equals("update", true)}!! } Where dao is a reference to a Room DAO interface. Since I've updated kotlin to version 1.6.10 it doesn't work anymore, the following wierd exception is thrown every time I try to execute the code above. The same exception is thrown when I evaluate the expression using Android Studio's EVALUATE tool:...

Is this the correct way to use coroutines? I have made a sample app which updates a piece of UI (a textview) after running a coroutine. I have very little exposure to coroutines and stuff, so I would like to get a feedback on whether my approach is correct or not, and if there is something I can add/modify to have better code writing practices. Thank you. import androidx.appcompat.app.AppCompatActivity import android.os.Bundle import android.widget.Toast import androidx.lifecycle.lifecycleScope import...

Callback from dialog to activity in Kotlin I have been facing some issues while converting my android JAVA code into KOTLIN. I want to show a Material Dialog on some condition and want control back to activity as soon as the user clicks on dialog's button. My java code: public static void showAlertPopup(Context context, String title, String message) { try { MaterialAlertDialogBuilder builder = new MaterialAlertDialogBuilder(context); builder.setTitle(title != null ? title : context.getString(R.string.alertTitle));...

I want to show a customize firebase push notification in Android when app is in background or killed state I want to achieve a custom notification behavior like WhatsApp or any other app where users can interact with the notification in-tray, type a message and send it indirectly from there. So, far I have been successful to show a custom notification with 2 buttons when the app is in the foreground. I achieved this by simply showing a custom notification when I get control in the firebase service's onMessageReceived() function. According to my research and work, you do not get control in the...

How to get an Int input from user in Kotlin I am currently creating an othello game in Kotlin. I have used Kotlin before in a robotics format, where I really didn't need to display text. Now that I am creating a user Int input to place a piece, I'm not really sure what to do. I've looked everywhere and kept on getting errors. Does anyone know how to do this? (function where I do the input is down below) the rest of the code is here : <a href="https://github.com/Spanini2/othello" rel="nofollow...

Access raw retrofit data from server pre GsonConverter How does one access the raw "string" of data received from the server before it is processed by the GsonConveterFactory? This is for an Android project using Kotlin Thanks

Actual/Expect classes doesn't work in Kotlin Mutliplatform proyect I was develoing an KMM App, where I try to implement a regular localDatasource and remoteDatasource, using SQLDelight and Ktor respectively. My problems comes when I try to shared the native code from AndroidApp and iosMain, into commonModule. I start to get the following error into my commonModule expect class: Expected function 'cache' has no actual declaration in module KMM-APP.shared for JVM Expected function 'cache' has no actual declaration in module KMM-APP.shared.iosArm64Main for...

How to materialContainerTransform live-loading in recyclerview to fragment? my situation my goal The first one here is what I want. <a href="https://lh3.googleusercontent.com/tI4J5bPX5O1_T8EBo9jEchcWjFgDWvoo1WiivnlHNBAeSlekyZwzQY5oDfUSixVCTQfAVDqTfOTQgMIdmc1l_dAyD-V7sCBXqMUkGSezaf-pcpMSjuuF=w1064-v0" rel="nofollow...

Android material button gravity issue on recycler view I'm having an issue using Material button on a recycler view. When i set iconGravity = ICON_GRAVITY_TEXT_START looks like it's property not work sometimes when view is recycled. I notice that when all rows have an icon, this problem not occurs, but when one row not show an icon i got this case. The xml i'm using And the code fun bind(data: ButtonVO) { button.apply { text = data.text setIconResource(R.drawable.ic_play_arrow) } } The result when view is recycled <a...

How to trigger a websockets message from outside the routing() block in Ktor? If I have an Kotlin application that wants to trigger outgoing Websocket messages in Ktor, I usually do this from within the relevant routing block. If I have a process outside of the routing block that wants to send a Websocket message, how can I trigger that?

IntelliJ: Cannot find declaration to go to in Kotlin In my activity_main.xml I have a TextView: In my MainActivity.kt I have declared: str.setText("Changed") IntelliJ says that it cannot find declaration to go to. How can I fix this? I have looked to other answers and they do not work.

ANDROİD STUDİO EMULATOR Launching 'app' on samsung SM-M317F. Installation did not succeed. The application could not be installed: INSTALL_FAILED_OLDER_SDK List of apks: [0] 'C:\Users\demir\AndroidStudioProjects\Navigasyon\app\build\outputs\apk\debug\app-debug.apk' The application's minSdkVersion is newer than the device API level. Retry

How to be albe to click under element in android? I have clickable, transparent element in whole screen but under that there are more clickable elements, is it possible to make them clickable as well? In the same time to be able to click on this whole screen element

InfoWindow showing on top of the marker I am trying to get the InfoWindow to appear behind the marker but moving with the infoWindowAnchor(3f, 0.5f), which moves the window into half of the marker vertically, it goes on top of it. Here is how I positioned the InfoWindow And here is the wanted result and I read a lot of posts about anchoring the InfoWindow but none seem to talk...

upload image file to server using retrofi I am trying capture image and upload it From android device to server using retrofit 2.9,but i got Uri lacks file How do I solve this problem?

I can't define supportFragmentManager with kotlin in fragment class DataFragment : Fragment() { private var _binding: FragmentDataBinding? = null private val binding get() = _binding!! override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) val adapter = MyViewPagerAdapter(supportFragmentManager) adapter.addFragment(DataFragment(), "Günlük") adapter.addFragment(Data2Fragment(), "Aylık") adapter.addFragment(Data3Fragment(), "Yıllık") viewPager.adapter = adapter...

How to visible full item when click on item in reyclerview android Hey I am working in android. I have list in horizontal form. I want to do, If my view is half visible in device and if clicked, then me recylerview scroll that item, i.e. it will visible it fully. So How Can I do in my recyclerview. Can someone Suggest me how can I achieved this through recyclerview in android. The image in which view is not selected and you can see last item is half visible. The image when view is...

How to gracefully access the results of asynchronous functions in Kotlin Coroutine with Mutex synchronously? I want to process some data in an IO thread and need to access the final data after the processing is complete. This is my Process sample code: private class Process { private val scope = CoroutineScope(Dispatchers.IO) private val value: AtomicInteger = AtomicInteger(0) private val mutex = Mutex() /** * Do background task to change value. */ fun doIt() { scope.launch { println("SCOPE - start at ${System.currentTimeMillis()}")...

Clean ways to implement dynamic filtering in combination with ReactiveMongoRepository? I'm working with a Kotlin-based codebase that uses the ReactiveMongoRepository interface. What is a clean way to implement dynamic filtering with a number of optional request parameters for a REST GET call like http://www.myservice.com/widgets?color=blue&amp;size=large&amp;status=available ? I know how to solve this problem in a Java-based Spring Boot project with JPA Specifications and JpaRepository but I've never worked with Mongo before. What is an alternative for this that works with...

problem to receive from firarebase and write them on recycler view I'm trying to retrive data from firebase and write them on a custom recycler view. I wrote the code but I can't understand why the data is not correctly taken from the database. this is the main activity: private lateinit var myDatabase: FirebaseDatabase private lateinit var myReference: DatabaseReference private var nameOfTournamentOnDatabase: String = "Tournament" private var listOfTournaments: ArrayList = ArrayList() private var adapter: DataListAdapter? = null...

Kotlin dagger hilt, how to reinit or delete/clear a serviceComponent i am new to dagger hilt and dependency injection in general. I followed some exemples i could found and i manage to set up my application with hilt and it's woking perfectly. However i am using a serviceComponent in one of my activity to provide some database and from what i could understand provider is very useful because it's allow me to init and provide my data base when needed. My problem is that i don't fully get how it's working right now. And i would like to be able to change my...

firebase auhentication both email and phone sms verification In Firebase, I register the user with e-mail on the authentication side and after registration I send e-mail verification to this user, but in addition to this, I define some other features in my system, such as name, phone number while registering. I will combine these features and keep them in user collections in firestore. At the same time, I want to send an sms-code to the phone number of the data whose e-mail and password are matched in the user collections with the e-mail and password...