RecyclerView is not showing results and freezes when using getFilter I'm trying to create a simple dialog where only a SearchView is shown and once the user starts writing it will filter some data from DB and will return only items which matches that search. The issue is that once i start writing and if i type fastly the APP just freezes but even if i go slow the RecyclerView doesn't return any result even if mList is not empty. Here is my Adapter code: class AdapterRicerca( private val mListAll: ArrayList, private val callback: RicercaCallback ) :...

The onItemChangeListener crashes So I am currently working on a spinner that changes entries in a list. When loading into the Fragment and loading the List into the spinner adapter and setting up the onItemChangedListener everything works fine. But when the App goes to another Fragment and then goes back the app crashes with the following exception: E/AndroidRuntime: FATAL EXCEPTION: main Process: de.heffnersoftware.hsproduction, PID: 13111 java.lang.NullPointerException: Parameter specified as non-null is null: method...

Android Studio Kotlin Recyclerview how to do multiple type view for specific object feature? I have data from RickandMorty Api and saving them on CharacterList and I am showing them in a recyclerview.I have name,location and status informations and showing them in cards.I have another carditem for displaying dead users and I want to show Alive persons in default card and Dead persons in another carditem (Default Carditem with blue backgroundcolor and other carditem is with red backgroundcolor).So as my researches people handle that with getItemViewType() but in my case I want to...

How does this compile without errors? fun main() { val list = listOf(5, 3, 4, 11, 6) print(test(1, "abc", 4)) } fun test(criteria: T, actual: T, points: Int): Int { if (criteria == null) return 0 return if (criteria == actual) points else 0 } // prints 0 The arguments provided in main function does not match generics contract in the test function. How does this compile? Tested with Kotlin 1.7.10, here's the kotlin playground link: <a href="https://pl.kotl.in/s9fJVUw0D" rel="nofollow...

Can't solve error regarding 'org.codeaurora.qcamera3.exposure_metering.exposure_metering_mode' I am working on an android application with AR elements. When it is redirecting me from the onboarding screen to the AR screen it crashes with the following error. java.lang.IllegalArgumentException: Could not find tag for key 'org.codeaurora.qcamera3.exposure_metering.exposure_metering_mode') at android.hardware.camera2.impl.CameraMetadataNative.nativeGetTagFromKeyLocal(Native Method) at...

how to get actual path of a file picked in jetpack compose? how to get actual path of a file picked in jetpack compose and upload in via retrofit.i had tried to get path via content resolver but it returning "ERROR: Couldn't read row 0, col -1 from CursorWindow. Make sure the Cursor is correctly initialized before accessing data"

How to move the image as transparent after erasing background to other screen? I'm developing a photo editing app, in that I have a feature to add the image to other image as transparent after editing in the app. So I can able to erase the background of the image. But I don't know how to move the background erased image to other screen , like how we do for the normal image. Now if I move the transparent part appeared as grey part. you can see that image. Help me to solve this. Thank you. [ Canvas( modifier = drawModifier...

How to add indication for compose Modifier.mouseClickable? In jetpack compose Modifier.clickable adding hover and click effect, however Modifier.mouseClickable doesn't provide this. On screenshot internal modifier from Modifier.clickable and mouseClickable, I think indication = null is the reason why there is no effect on click. By the way Modifier.indication doesn't work or I use it wrong.

GreedyScheduler.onAllConstraintsMet ANR Anyone able to help with this one. Nothing in stack trace helps to track down the source of the problem as there is absolutely no reference to our app it self. And it only happens on Android 12. I completely lack to understand what java.util.Currency has to do with our app at all... #00 pc 0x458f1c libart.so #01 pc 0x6f98a8 libart.so #02 pc 0x701380 libart.so #03 pc 0x3b38c0 libart.so #04 pc 0x34a314 libart.so #05 pc 0x762bd0 libart.so at java.lang.System.arraycopy(Native...

How would I map a list of items to another function? I am trying to figure out the best way to map. This is an example of what I have. data class ValueDescription (val length: Int, val count: Int) // Now I am trying to map to a variable that looks like this val myValues = ValueDescription(length here_, count here) I have a sorted map that I want to map to my values // The map will look like this // Where both Ints hold the lengths and counts // For example I would have the length of 7 to count of 8 val out = Map How can I take the...

Calling a function every 20 seconds in kotlin There is a function I'm trying to call every 20 seconds using Timer(). I already tried as well with a while loop followed by a delay of 20 seconds, but ends up running out of memory or throws thread exceptions. How can I do this without making my app crash and run out of memory? For a matter of context, I'm building an app to communicate with a BLE device. I just started with Kotlin, so I'm not sure how to do this without breaking everything. I just want call the same function because...

How to show notifications at provided time frame and frequency in Android? I'm trying to make a feature where user can select the time frame and interval in which he would receive notifications to his phone. I'm using AlarmManager for repeating notifications, however it only covers the start time of notifications and the interval/frequency of notifications. How could I make the notifications go off only from user selected hours, let's say every day 1 PM - 8 PM (13:00 - 20:00) every 2 hours? I was thinking about using WorkManager to start AlarmManager at selected...

KSP: how can I get the default value of a data class property? I have the following data class annotated with @MyAnnotation: @MyAnnotation data class MyDataClass( val foo: Boolean = true, val bar: Int = 123, val buz: String? = "abc", ) From the ClassDeclaration I can get all the KSPropertyDeclaration, and I'm able to get the simpleName and resolve the KSType, but I don't know how to get the default values of each property.

Migration from SQLite Cipher V1 to Room DB V2 on App Update: I build two apps with the same package name: In the first app, I use SQLiteCipher using "Pass_Phrase" (Version_1 DB) for CRUD operations using Java. In the second app, I just wanted to migrate from SQLiteCipher to Room (Version_2 DB) and also read data from SQLiteCipher and put it into Room DB using Kotlin. I completed the first app and was stuck at migration's step in the second app. Need your help. Thanks a lot!

The same value, 16, was passed as the prevKey in two sequential Pages loaded from a PagingSource I have this pager with Paging 3 that keeps either repeating pages (if I allow keyReuseSupported) or returning the IllegalStateException because of "The same value, 16, was passed as the prevKey in two sequential Pages loaded from a PagingSource." I am not sure why this is happening, even if I do understand the theory. This is the paging data source: override suspend fun load(params: LoadParams): LoadResult { val key = params.key ?: parseDateFrom(date) return runCatching {...

Why is the recycler view has NullPointerException in fragment? so here is the code for my recycler view adapter, which is located at onCreate: override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) databaseReference = FirebaseDatabase.getInstance().getReference("profilUsaha") auth = FirebaseAuth.getInstance() uid = auth.currentUser?.uid.toString() daftar_pesan_recycler_view.adapter = adapter listenForLatestMessages() arguments?.let { param1 = it.getString(ARG_PARAM1) param2 =...

How to change the Permission Handler old version to the new version i have the old permission handler code, but i'm using the latest version of pubspec.yaml . how to change the code below with the latest version?? is there someone who can help me if (Platform.isAndroid) { PermissionStatus permissionStorage = await PermissionHandler().checkPermissionStatus(PermissionGroup.storage); if (permissionStorage != PermissionStatus.granted) { Map permissionStatus = await PermissionHandler().requestPermission([PermissionGroup.storage]);...

Android Studio: autoSize of EditText doesn't work in my current project there's an EditText with fixed layout_width and layout_height, called exercise that is expanded downwards programmatically: One line of text (String) + "\n" is added to the EditText. Sometimes the line added to the EditText, let's call it element, is too long to fit inside the full width of the object so it's splitted into a new line. The thing is I would either like the lines' text size in exercise to be resized to fit the EditText's width or have a clear visible...

Android Jetpack Compose Animation of Size Change with Duration How do I add duration to content size change animation in Jetpack Compose? Trying to use Modifier.animateContentSize() and pass an animationSpec with duration, but it just snaps in or out, duration is not observed. Column() { Modifier.animateContentSize (animationSpec = tween(durationMillis = 5000, easing = LinearEasing)) if (!isTabInvisible) { //some content goes here } }

In Kotlin, can I have a conditional builder element on a collection? Currently I have a query that looks something like this: override suspend fun getExternalTestsForProfile(profileKey: String, take: Int?): List { RealmDb.useRealm { where(RealmExternalTest::class.java) .sort(RealmExternalTestFields.CREATED_AT, Sort.DESCENDING) .findAll() I want to have functionality so that if take is null, it will fetch all elements in the collection, but if an Int is supplied, it will take and map in that case only. So my...

How reload app from Android Studio with Foreground Service running? I'm new to Android development. We have an app where a Foreground service gets kicked off when the app boots. The service is all good and working well. When debugging an app without a Foreground Service in Android studio was easy...you find the app in the Recents list, kill it, and then hit the "Play" button to Run your app with the most recent changes. The problem is when killing the app, the Foreground Service is still running so clicking the play button just sits there with a progress bar...

MongoDB exception DuplicateKey while saving I have a simple method to update my object fun updateUniversity(university: University): Mono { if (university.id == null) { return Mono.empty() } return universityRepository .findById(university.id!!) .filter { it.name == university.name } .map { university.copy() } .flatMap { universityRepository.save(it) } } and it fails on saving the result (org.springframework.dao.DuplicateKeyException). But saving is not only about creating...

Multiple Animations are Not Launching At the Same Time in Jetpack Compose I have 3 animations, but the top one launches first, then the other two, how do I get them all to launch at the same time? I tried putting them in the same coroutine scope but still getting same results. LaunchedEffect(isItemInView) { scope.launch { coroutineScope { launch { // Even without the scope.launch, coroutineScope, launch lines, same effect bar1.animateTo(if (isItemInView) bar1EndLocation else bar1StartLocation)...

Round the Integer value with specific steps increment and decrement (please read carefully) Kotlin [closed] I'm using Kotlin language. I have 2 scenario increment/decrement: var slotValue = 500 (it should be multiple of 500) so when I press increment, "a=501" should become = 1000 "a=1150" should become = 1500 "a=999" should become = 1500 "a=2400" should become = 2500 so when I press decrement, "a=501" should become = 500 "a=1150"...

Spring WebFlux handler for kotlin SharedFlow I can see the following example working in Spring WebFlux handler for a flow builder like the next one: suspend fun getDummyFlow(req: ServerRequest): ServerResponse { val flow = flow { // flow builder for (i in 1..3) { delay(1000) // pretend we are doing something useful here emit("Hello $i") // emit next value } } return ServerResponse .ok() .contentType(MediaType.TEXT_HTML) .bodyAndAwait(flow) } Yet, I need to...

Kotlin || How to adjust Gridlayout width and height parameters programatically for all screen sizes? I have a gridlayout with fixed height and weight paramaters. When screensize change automatically ıts getting bigger or smaller. Iv tried all methods but not succeed. How to fix? My code ; private fun loadBoard() { for (i in boardCells.indices) { for (j in boardCells.indices) { boardCells[i][j] = ImageView(this) boardCells[i][j]?.layoutParams = GridLayout.LayoutParams().apply { rowSpec = GridLayout.spec(i) columnSpec =...

java.lang.SecurityException: Call from user 0 as user 8333 without permission INTERACT_ACROSS_USERS or INTERACT_ACROSS_USERS_FULL not allowed My app crashes on an android 11 device when I try to show a toast from a fragment by clicking a button in the adapter. I have an interface through which the toast is shown. The error log is: java.lang.SecurityException: Call from user 0 as user 8333 without permission INTERACT_ACROSS_USERS or INTERACT_ACROSS_USERS_FULL not allowed. at android.os.Parcel.createExceptionOrNull(Parcel.java:2373) at android.os.Parcel.createException(Parcel.java:2357) at...

Having problems understanding how getpackagemanager() is derived from getactivity() kotlin I was looking through some docs when I stumbled upon this line of code if (activity?.packageManager?.resolveActivity(intent, 0) != null) { startActivity(intent) } I was puzzled as I can't seem to find packageManager as a method in the activity class, how did the activity instance use the dot operator with packagemanager if it is not one of the Activity class properties? Upon further digging, the packageManager method can be found in the ContextWrapper class, any idea how this works?...

Kotlin Parsing json array with new line separator I'm using OKHttpClient in a Kotlin app to post a file to an API that gets processed. While the process is running the API is sending back messages to keep the connection alive until the result has been completed. So I'm receiving something like {Status(status=,transcript=,error=)} {Status(status=,transcript=,error=)} {Status(status=,transcript=,error=)} {Status(status=,transcript="Hello, World",error=)} Which I believe is being separated by a new line character, not a comma. I figured out...