Modifying a SnapshotStateList throws ConcurrentModificationException The documentation of SnapshotStateList states that it is similar to a regular mutable list. I have a use case where I need to modify all the elements in the list but I'm running into ConcurrentModificationException. I have created a very simplified version of my usecase here. The following kotlin list works fine: val myList2 = mutableListOf("a", "b", "c") myList2.forEachIndexed { index, _ -> // Modify item at index myList2[index] = "x" } But I get a concurrent modification...

How to fix ClassCastException in enhanced for-loop in Kotlin? val programToScheduleMap: HashMap = HashMap() val hashMap: HashMap = Gson().fromJson(file, programToScheduleMap::class.java) val programList: ArrayList = ArrayList(hashMap.keys) val formattedProgramList: ArrayList = ArrayList() for (program in programList) { //Getting ClassCastException here val programString = Pattern.compile("(?

passing data from activity to fragment in android studio kotlin(not duplicate, those method is not working) I am having an activity called Image activity inside it there are 2 fragments called image_display and image_change fragment, for image_activity I am getting data from an adapter(using getIntent), and it's working fine up to here. so I want to send the data (i.e URL) to the fragment but my method is not working. my image_activity code is like this class ImageActivity : AppCompatActivity() { override fun onCreate(savedInstanceState: Bundle?) {...

WindowManager Crash (Java/Android) I'm so tired doing this project Im coding a project that show head-chat like Facebook But when I add view to window manager, it don't show the head chat and crash Please help me Here is my ChatHeadService.java code: public class ChatHeadService extends Service { private WindowManager mWindowManager; private View mChatHeadView; public ChatHeadService() { } @Override public IBinder onBind(Intent intent) { return null; } @Override public void...

App crash on recyclerview scrolling android kotlin I'm working on a project dealing with loading data from firebase into recyclerview. recyclerview seems working just fine but when i try to scroll it until the end of the posts it always make the app crash. it's so strange to me if i don't scroll to the end post it won't crash. in logcat it show only an error "fail to acquire dataanalyzer...". i have no clue about it. please kindly help! Code as below : package teacher import android.content.Intent import android.os.Bundle import...

Changing ActionBar Height I changed the ActionBar height in themes.xml with this 30dp The height of ActionBar changes but then it throws the alignment of my first control off. Before changing ActionBar height: After changing Actionbar height The first Spinner control is aligned to the top of the Layout I'm at a complete loss.

I am trying to use mockk anyConstructed but ending with Missing calls inside every { ... } block I am trying to return an object whenever a new object of a class is being created. I have tried using anyConstructed with a spyk or even mockk object of PredictionCheckFunction every { anyConstructed() } answers { predictionCheckFunction } It results in the following error on the above line io.mockk.MockKException: Missing calls inside every { ... } block. In Mockito I would do something like this whenNew(PredictionCheckFunction.class).withNoArguments().thenReturn(predictionCheckFunction);...

ImageView setOnClickListener Not Work (Java/Android) Im having some problem with Click Listener on Image View I try to log some text if I click on the button But it not work at all Here is my code, Hope u can help me: ChatHeadService.java ImageView closeButton = (ImageView) mChatHeadView.findViewById(R.id.close_btn); closeButton.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { Log.i("myTag", "This is my message"); //close the service and...

java.lang.IllegalStateException: Fail to serialize body. Content has type: class java.util.Collections$SingletonList I'm attempting to deserialize a JSON list of strings into the body of a ktor POST request for testing. However I get the following error: java.lang.IllegalStateException: Fail to serialize body. Content has type: class java.util.Collections$SingletonList, but OutgoingContent expected. If you expect serialized body, please check that you have installed the corresponding feature(like

Json

) and set

Content-Type

header.) Any suggestions? Here is my test setup: import...

L2Cap Connection-Oriented-Channel -Android Support Android 10 enables your app to use BLE CoC connections to transfer larger data streams between two BLE devices. This interface abstracts Bluetooth and connectivity mechanics to simplify implementation. Is there any reference implementation for this? How to instantiate L2Cap COC in android?

How to get a platform-specific newline in Kotlin Multiplatform? I am seeking a function which returns a platform-specific newline string. This is possible using System.lineSeparator(), but it's only available in Kotlin/JVM. Is there any multi-platform function? I'm aware of the expect/actual approach, but I'm searching for a shorter way. (Maybe a function in the standard library?)

Spring Boot custom model on top of another I'm new to Spring Boot and I don't know how to google this, but I have this situation: There is table tokens: id INT token VARCHAR type VARCHAR resource VARCHAR attributes JSON created_at DATETIME And this tokens are multi-purpose: login codes, share codes etc Login process: E-mail provided by user Server sent login code to e-mail User provides code Authorization So in login context, I don't have Token with resource and attributes, but I have LoginCode model which properties code userId...

exoplayer notification manager doesn't show seekbar thumb i'm using exo player notification manager to display my song media playback notification , but unfortunately seekbar thumb , current position and max duration not showing , all i get now is just that progressbar nothing else. enter image description here here's my foreground service that i use to start notification public class audioPlayerService extends Service { private SimpleExoPlayer player; private...

How to set an ImageVector from resource? I'm trying to set an icon for bottom navigation like so: sealed class Screen(val route: String, val label: String, val icon: ImageVector) { object Home : Screen("home", "Home",R.drawable.outline_home_black_24) object History : Screen("history", "History", R.drawable.outline_history_black_24) } But it says I need to switch the parameter to Int. Help is appreciated, thanks. :)

Deserializing a single nested field from an object in Kotlin I'm looking forward to deserialize the following JSON object into a single list with built-in Kotlin serialization. { items: CustomObject[] } @Serializable data class CustomObject(val name: String) The thing is, I don't want my list to be accessible through a wrapper object just for the sake of holding the list in a single field, which would end in something like that: CustomObjectList.items[] Is there a way of specifying to deserialize the items field here directly into a List? Thank you

some view in fragment not animated with transition I want to implement a Fragment toggle animation by using setEnterTransition method. the Fragment view is like this: views in index Containers are dynamically generated. and the page like this and I add the enterTransition in BaseFragment.onCreate method. val inflater = TransitionInflater.from(requireContext()) enterTransition = inflater.inflateTransition(R.transition.slide_right)...

Android Koin injected viewmodel with multiple same class parameters fails I'm following the docs as stated her https://insert-koin.io/docs/reference/koin-android/viewmodel/#viewmodel-and-injection-parameters The only difference is my viewmodel has 2 (besides Koin injected repos) parameters of the same class String. Lets call them stringA = "red" and stringB = "blue". When I pass the parameters these are clearly defined...

Why can't I initialize the variable before onCreate in Android development? I'm new to Android development. When I use ViewBinding to access items in the layout, I encountered a problem about where to initialize variable. As you can see in the code, I declare two instance variables, but only initialize the variable tag before onCreate method. My question is that why can't I initialize variable binding like variable tag before onCreate method since I can access to variable tag in the onCreate method without error? I did a test that initialize binding before onCreate...

Flow collect latest method returns same data two times I am trying to use Kotlin flow. Here I am trying to get list of data class(Example Car model class) from table using room and return as Flow(). I collect the flow using collectlatest method. But flow.collectlatest emit two times. But I dont know why. Can you please help. This issue occur after I changed the room version to 2.4.0

Spring Integration org.springframework.web.client.RestClientException: No HttpMessageConverter I keep getting the below exception in my Spring Integration project: HTTP request execution failed for URI [http://localhost:9502/clients/clientId] in the [bean 'retrieveClientIdConfigurationFlow.http:outbound-gateway#0' for component 'retrieveClientIdConfigurationFlow.org.springframework.integration.config.ConsumerEndpointFactoryBean#2'; defined in: 'class path resource [com/abs/integration/services/RetrieveClientIDConfiguration.class]'; from source: 'bean method...

Kotlin thread status different state in fragment My goal is to update IU elements in a thread in Fragment (when it is visible). Basically I've got a thread that is supposed to run in loop. It checks if one of UI element is not null, or else terminates. private val thread = Thread { while (txtHomeDest != null) { txtHomeDest.post { txtHomeDest.text = something } ... Thread.sleep(50) } I start the thread in onStart or in onViewCreated. According to documentation only NEW thread can be started so I have a check: override fun...

Navigation won't render fragments Ive recently started programming in android studio for a school project, and i cant seem to get this bottom navigation working. I've watched multiple video's on how to make a navigation using fragments. The problem is that everytime i try to navigate to a fragment it will make the icon go selected, but it won't render the fragment itself Menu items Main activity val bottomNavigationView = findViewById(R.id.bottomNavigationView); val navController = findNavController(R.id.fragment)...

How to parse an Integer for SimpleDateFormat() I want to show the Integer "zeitMinuten" and "zeitStunden" in my TextView with the "mm" and "HH" Format. Now my TextView is just "00". When I just do "actualMinutes.text = zeitMinuten.toString()" will look like "0", "1" ... "10" but I want "00", "01". I hope you understand my problem. fun timers() { var timer = object : CountDownTimer(4000, 1000) { override fun onTick(millisUntilFinished: Long) { zeitMinuten += 1...

How Add Animation On view when view width is changing [Android] I'm using collapsing toolbar and I am changing view width OnOffsetChangedListener. what I want is that put little animation when searchView width will change , now its changing very straight and its little weird for user. I tried to set android:animateLayoutChanges="true" on parent layout but it not worked var mListener = OnOffsetChangedListener { appBarLayout, verticalOffset -> if (binding.collapsingToolbar.getHeight() + verticalOffset < 2 *...

Ktor with Koin DI can't inject, missing clazz I am setting up Koin DI on Ktor in this way: https://insert-koin.io/docs/reference/koin-ktor/ktor/ But I am getting an error: No value passed for parameter 'clazz' My implementation looks like this: import io.ktor.application.* import io.ktor.routing.* import org.koin.java.KoinJavaComponent.inject import services.SomeService fun Application.registerPropertyRoutes() { routing {...

Value in editText passed in Toast message is not showing I want to pass the value of edit text in the toast but it is not showing the same.What is the mistake in my code ? This is showing:"Username: is wrong" instead of "Username : nandini is wrong".This is the image. // this is my xml code : ****** ****** // this is my MainActivity.kt...

Room Android - Managing Query Result Below is the table named : batteryDetails Please note that there are two same timeStamp value at logId 8 and 9. The same timeStamp value is 1640010766 Now, Below is the eventTypes table. The Result I want from my Room query should be like this : "If there are two or multiple same status column value then it should consider the only one which...

How to show web articles in app like facebook o linkedln I want to show articles from the web like modern social networks do, for example facebook. I know that I can redirect users to a web page with intent or show a url in webView but that is not my goal. I want users to stay in the app but I want to display articles like it is shown in the following image. Are there any libraries for that, or should I implement that from scratch? It doesn't need to be exactly the same but it should look something like this. <a...

Check if an object is of this class type in Kotlin I want to override equals function of a class. How can I check if the other object is of the same class as this? Have tried the following, but it does not work data class Alert( //properties ) { override fun equals(other: Any?): Boolean { return other is this.javeclass //&& compare property values } }

How to keep app's backstack when using implicit deeplink? (Nav component) Imagine i have a link. In my app i have bottom navigation and deep link to 3rd fragment in menu. When I press on link i'm heading to 3rd fragment as expected. But if i will try to press any another fragment from bottom menu my app is crash because this fragments not in backstack. Is there any method how can i make my app act normal after open fragment through deeplink?