Required type mismatch in spring reactive I create two function in my AppUtils class but when i try to access these service in my ProductService class I get following type of error Type mismatch. Required: Flux? Found: List Type mismatch. Required: Flux? Found: List Type mismatch. Required: (TypeVariable(T)) → TypeVariable(R) Found: (AppUtils, Product?) → ProductDto? AppUtils.kt package com.main.productservice.util import com.main.productservice.entity.Product import com.main.productservice.model.ProductDto import...

Posting data to php server using retrofit failing Hey i have a problem trying to post data into php server , so basically i have create php file which insert the data into online db ( in 000webhost ) , when i open the link , it works fine , not showing any error , but when i check my online db , i dont see any data there qnd i'm not really sure what could have i missed as steps to make it work , don't know if i need to perfom login to my online db first then post data or not cause i'm already supplying 000webhost db credentials so i don't...

how to add multiple values in shared preferences and load them in recyclerview? I am trying to make a todo list app and want to save all todo title in the shared preference (I know it's a bad idea) but only one value is stored in the shared preference and only that loads on app restart. How to add and load multiple items from shared preference in recyclerView ? MainActivity.kt import android.content.Context import android.content.SharedPreferences import androidx.appcompat.app.AppCompatActivity import android.os.Bundle import...

upload image in apollo android and jetpack compose I want to upload an image using graphql, I tried this code but it didn't work in Screen there is a button called "Select" should call launcher and set URI then submit button should call ViewModel.submit and run the query @Composable fun PostFormScreen( viewModel: PostFormViewModel = viewModel(), onDone:() -> Unit ){ val launcher = rememberLauncherForActivityResult(contract = ActivityResultContracts.GetContent()) { viewModel.uri.value = it } Button(onClick = {...

addTextChangedListener not working for second time- Android Kotlin Viewmodel In my app, I have a scenario to show 2 different UI. So I created a root layout and add views to it. After adding views, I call a function to listen the text changes. Below is how I do it: when (shapes) { Shapes.CIRCLE -> { var view = View.inflate(this, R.layout.layout_config_circle, null) layout_properties_container.addView(view) mainViewModel.validateFields(edit_text_radius) } Shapes.RECTANGLE -> { var view =...

Receiving ByteArray data from API through Retrofit2 causes error in my Android App I'm calling an API in my Android app to receive this ByteArray from the server I'm using Retrofit2 in order to call the API, and in doing so I've had to specify the Response type. When I specify the Response type to be ByteArray, @GET("api/getImage") suspend fun getImage(@Query("user_id") user_id: String ): Response // This is in my API Class suspend fun getImage(user_id:...

Android: Fragment View parent has visibility GONE I recently added new Fragment into my app and I don't quite understand why is this behavior happening, but it is. Every time I start this Fragment, its layout has visibility set to gone. I found out this from LayoutInspector. This Fragment is special, because its extending abstract ParentFragment and this abstract fragment is extending BaseFragment which is used as base for my entire app. I don't know if this is reason why it is happening but I cant figure out why. onCreate will run without...

Firestore polygons don't print separately on google map. Help me find the fault & make it right I have polygons saved to firestore database as arrays which hold GeoPoints collection. Each document has one polygon saved as an array of GeoPoints but when I get these polygon documents printed on google map, they don't print on map as individual polygons but print on map as a whole/one polygon. I have several polygon in firestore which I need to see separately on google map. I am writing an e-commerce app and I have to use these polygons as shipping/delivery zones. I have multiple...

TWA autocloses on receiving intent in onNewIntent What I want is to CustomTWAActivity to not close and keep on running. I have a MainActivity that starts a TWA (Trusted Web Activity based on CCT protocol). I have extended the TWA Launcher with a Custom Class so that I can override its onNewIntent Method and do some work. From Main Activity I call the CustomTWAActivity like this: val intent = Intent(this, CustomTWAActivity::class.java) val args = call.arguments as String? if (args != null && args.isNotEmpty()) { intent.data =...

Getting Black Screen instead of Home screen behind Biometric fingerprint popup I'm using biometric for fingerprint detection, User can select device credentials from fingerprint popup And for that I have used setAllowedAuthenticators(BIOMETRIC_WEAK or DEVICE_CREDENTIAL) But When I use DEVICE_CREDENTIAL here it shows me black screen behind the fingerprint popup. And Without DEVICE_CREDENTIAL It shows Home screen behind fingerprint popup. And this issue is specific for Samsung device. In other devices it shows Home screen behind it. <a...

Execution failed for task ':app:mergeDebugResources'. Error Hi I have a problem with app:mergeDebugResources I added multidlex and check the link in Gradle.properties jvmargs=-Xmx2048m -Dfile.encoding=UTF-8. But id doesn't help still the same. In the logs saying that's a cooler problem. I don't have any idea what should I do. Thanks for any help

İnstagram clone app with Kotlin comments error My İnstagram Clone App is working normally.But İf you clicked comments and going to comments fragment and app is crashed. I am looking logcat and errors say Picasso isnt working. Please help thank you. private fun getUserInfo(imageProfile: CircleImageView, userNameTv: TextView, publisher: String) { val userREf = FirebaseDatabase.getInstance().reference.child("Users").child(publisher) userREf.addValueEventListener(object : ValueEventListener{ override fun onDataChange(p0:...

How to delegate scope in Kotlin I have a method onBind() that I want to use with a scope of binding, is there a way to achieve this? Currently, I have a variable (“binding: T”) and an abstract function onBind() in BaseBindableFragment, and in my implementation I use with(binding){} to scope onBind(). I want to avoid using with(binding) and make it so that in implementation I get onBind() { this: T -> } My abstract class abstract class BaseBindableFragment : Fragment() { protected lateinit var binding: T private...

How do I get GoogleCredentials in Kotlin for Android? For desktop applications I can use Google Cloud SDK or environment variable with path to json authorization file. Mobile application require online-created credentials. GoogleCredentials uses method fromStream to getting it. Decision I used for service key: val json = "... content of json file ..."; var inputStream: InputStream = ByteArrayInputStream(json.toByteArray()) var credentials: GoogleCredentials? = GoogleCredentials.fromStream(inputStream)...

Trying to change android notification not working (possible wrong uri) I want to change the notification sound of my notification manager. I try this by using this code. AudioAttributes audioAttributes = new AudioAttributes.Builder() .setContentType(AudioAttributes.CONTENT_TYPE_SONIFICATION) .setUsage(AudioAttributes.USAGE_NOTIFICATION) .build(); channel.setSound(alarmSound, , audioAttributes) // Register the channel with the system val notificationManager:...

Why recyclerview with paging not working properly? Hy, So, I have 2 fragments, the first one is a browser fragment, the second one is a detail fragment. I noticed that, if I scroll down a lot, for example to the 200th item, and I go to the item details fragment, and after that I navigate back, the recyclerview automtically scrolls up herself for the 60th item. After that I saw the code, and I noticed that, I use paging library, and in the config I set up the page size to 30, and the InitialLoadSizeHint to 2*pagesize which is 60. So I think...

How to make button in android to vibrate like a real button Suppose in iPhone 7 when you press the home button you feel like it's a real button because of the perfect vibration feedback. I want to achieve the same, I know the hardware is the main part that plays the main role. E.g. fun vibrate(context: Context , milliSeconds: Long = 50){ val vibrator: Vibrator = context.getSystemService(Context.VIBRATOR_SERVICE) as Vibrator if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.O)...

Writing object to csv file with a few column in Kotlin I have a problem typing objects into the csv file. I do this in three ways, but each of them puts all the fields of the object into one column in the csv file. How to correct the code so that each field of the object is in one column in the csv file? val csvWrite = CSVWriter(FileWriter("${requireActivity().getExternalFilesDir(Environment.DIRECTORY_DOWNLOADS)}/Export/inventory${date}.csv")) //First way val writer =...

Displaying live data from one column of Database in RecyclerView Header I want to create a Header for my recyclerView that displays the total amount spent. Now my idea was that in the Adapterclass of the header I want to use a function from my Dao that gives me all the data from the table and iterate over the needed column and build the sum. I am getting unresolved reference for the getExpenses() function and the error that my for loop needs an iterator method. Anyone knows why and can help me out? The Dao: @Dao interface ReceiptDao { @Query("SELECT * FROM...

E/RecyclerView: No adapter attached; skipping layout . Adapter doesn't want to be recognized/detected I'm really sorry for asking the same question like 100 other people did but i have tried every solution provided and I can't seem to find what is wrong with my code. Currently the problem with the code is that the recyclerview doesn't want to recognize my adapter. I have tried changing the View around and tried some solution that have been provided by other thread and none of them have worked so far. Have tried debugging with populating the list with dummies but it's also not the problem...

convert uri to file android kotlin I want to covert URI to file, I tried to use uri.toFile() but I got error Uri lacks 'file' scheme: content://com.android.providers.media.documents/document/image%3A37

Kotlin: MutableSharedFlow BufferOverflow behaviour on first emissions I have a following code snippet: val flow = MutableSharedFlow() launch { repeat(10) { delay(100) println("emitting$it") flow.emit(it) } } launch { flow.collect { delay(1000) println("a$it") } } launch { flow.collect { println("b$it") } } I would expect output to be like: emitting0 b0 a0 emitting1 b1 a1 ... Because of BufferOverflow.SUSPEND which causes emitter to wait until events are consumed. The actual output...

is there a way to merge these 2 kotlin functions? import org.springframework.http.ResponseEntity fun responseEntity(block: (ResponseEntity.BodyBuilder) -> T): ResponseEntity { val builder = ResponseEntity.ok() return builder.body(block(builder)) } fun responseEntityVoid(block: (ResponseEntity.BodyBuilder) -> Unit): ResponseEntity { return ResponseEntity.ok().also(block).body(null) } if I pass the block param with type () -> Unit to the first function, it returns ResponseEntity, but not ResponseEntity(which is defined in java...

Exception in thread "main @coroutine#2" java.lang.NullPointerException? I have implemented unit testing in ViewModel with mockito. class but I am getting following exception Exception in thread "main @coroutine#2" java.lang.NullPointerException at com.example.giphyandroidapp.viewmodel.GiphyTaskViewModel$getGifsFromText$1.invokeSuspend(GiphyTaskViewModel.kt:24) at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:33) at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:106) at...

How to resume a stuck code analysis in Android Studio? I recently noticed a behaviour, that the default code analysis does not finish anymore in one of my android projects, in particular in kotlin files - unfortunately without an error message. With a stuck analysis I am not able to identify errors in my code anymore and basic stuff like autocompletion does not work, which makes it unable to work. In the top right corner of the opened file I constantly get Analyzing... I...

For loop in thread on JSONArray iterates only once and I do not know why I have for loop in Runnable class and it gets data from listener from other runnable but this other runnable is on the same thread that the first runnable (its just call .run() method to reuse some code and everything works fine up untill now... I'm getting JSONObject that contains 2 importand variables, one of them is JSONArray that i'm saving as "tempResult", it's 14 objects long and the said object is never null. Then when I'm trying to iterate through it it stops after I'm trying to add...

Kotlin extension functions vs utils/helpers While searching on the internet for information I found it difficult to get a good understanding of which approach should be taken. My points for using extension functions: Let's you scope functions to specific classes Helps avoid writing one additional parameter Easier to comply with Single-Responsibility Principle as functions often need to be in separate files so each file at least doesn't require to be an instance My points against Util/Helper classes: Is considered an antipattern in OOP,...

Firestore startAt skips the snapshot given to it and behaves as startAfter instead I have a PagingSource that pages through a firestore collection to return documents. class ClipPageDataSource(mParams:Bundle, private val mAds:Boolean):PagingSource(), ClipDataSource { var query : Query?= null private val mFirestore = FirebaseFirestore.getInstance() private var mBaseQuery = mFirestore.collection(SharedConstants.COLLECTION_CLIPS) .orderBy("createdAt",Query.Direction.DESCENDING) private var mLikedQuery =...

Not able to return a desired value inside a overidden method using coroutines in kotlin I am new to kotlin and coroutines.I have been working on a client-server part of an android app.I am using mediasoup-client-android library for this. I am trying to intialize the sendtransports using createSendTransport() method.This method does have a sendTransportListener which has abstract methods.One of them being is onProduce() which returns a producerId which is a String. awaitEmit() is an...

Thymeleaf split table on different pages in pdf I have a html template with table ID Name Salary ID Name Salary