Repostory could not be found Spring R2DBC In my code I ran into this weird issue where one of my repository is not being recognized in my controller and throwing this error during startup. Parameter 0 of constructor in com.test.pack.controller.ModulesController required a bean of type 'com.test.pack.repository.ModuleRepository' that could not be found. This is my controller @RestController @RequestMapping("/modules") class ModulesController(private val moduleRepository: ModuleRepository) { @GetMapping suspend fun...

Profile fragment code not working in kotlin I making my profile fragment and I want to display the post and the number of post in the Profile of the app. I have searched for the code from websites and I wrote this codes but this codes are not working. Here is my code class ProfileFragment : Fragment() { var fragmentView: View? = null var firestore: FirebaseFirestore? = null var uid: String? = null var auth: FirebaseAuth? = null var currentUserUid: String? = null override fun onCreateView(inflater: LayoutInflater, container:...

Spring boot 2.2 upgrade causes Hibernate null identifier assertion failure error I'm trying to upgrade a project to spring boot 2.2+ but for some reason, when i run the tests, i get: 2020-07-04 103454.614 ERROR 92979 --- [ main] org.hibernate.AssertionFailure : HHH000099: an assertion failure occurred (this may indicate a bug in Hibernate, but is more likely due to unsafe use of the session): org.hibernate.AssertionFailure: null identifier org.hibernate.AssertionFailure: null identifier ... the code that invokes it (didn't change since the...

How can i get a image resource from an URL I tried using the library "Picasso" but it needs a pre-created ImageView, and I am trying to put it in a new ImageView but when I put the id that the ImageView will have it gives me an error. I am using this code to create the ImageView: val photo = ImageView(applicationContext) photo.id = variable1 Scroll.addView(photo) And I am using this code to put the image: Picasso.get().load("$url").into(variable1) And this does not work, so I thought it will be a good...

Using dagger hilt + parse Server SDK: java.lang.IllegalArgumentException currently, I am working on a project where I try to use both dagger (hilt) and parseServer SDK. The problem is that in my opinion it is impossible to use this combination in one project... Here is my opinion on why I think it is impossible, at least in the way and knows how I would like it to be: When using Parse SDK and creating a class, you have to annotate it with @ParseClasssName("YourDBClassName"). This custom class has to be registered in onCreate() with...

Why function with reified type parameter should be inlined? As I understand reified is mostly sugar, and Java: static boolean isTypeOf(Object o, Class tClass) { return tClass.isAssignableFrom(o.getClass()); } Kotlin: inline fun Any.isTypeOf(): Boolean = this is T seems to me equivalent, is there any difference? Why function with reified type parameter should be inlined?

Kotlin compilation is not executed incrementally when building from Android Studio I've created default Android project in Android Studio and selected Kotlin as a programming language. Then I've build the project (Build -> Make Project (F9)). After opening Build Analyzer window and expanding the details of the compileDebugKotlin task, I've noticed that this task has been not executed incrementally: Why Kotlin compilation is not incremental? Is there a way to enable it? Shouldn't it be enabled by...

Firebase Cloud Messaging Android using Kotlin I am trying to send cloud messages (push notifications) from the firebase console to my app. I have seen similar questions on here but nothing worked for me. I followed the documentation, watched the tutorial, searched online, and StackOverflow and nothing seems to work for me. MainActivity, I am getting the token and trying to use it to send a test message. FirebaseInstanceId.getInstance().instanceId .addOnCompleteListener(OnCompleteListener { task -> if...

How to convert selected java code to kotlin I want to be able to select some java code and convert it to kotlin in android studio. Is it possibile? Many times when I paste java code, it doesn't get converted to kotlin... NO, I dont want to convert whole java file to kotlin file. Please do not post answers like that Yes, I tried to go to prefferences and checkBox with "Convert pasted code to kotlin" is selected. But still many times my code doesn't get converted

Access elements of a list when the index is not provided in Kotlin I have a function that maps two objects fields. It works fine, but I came out with a list of objects whose fields need to be mapped. I can't access the elements of the list without passing and index but there is no way I can do that. The below code works fine when it comes to object - object mapping (both are simple objects): override fun mapFrom(item: MovieDetailReponse): MovieDetailViewItem { return MovieDetailViewItem( id = item.id.orZero(), overview =...

Caused by: groovy.lang.MissingPropertyException: Could not get unknown property 'versions' I am trying to import this below library https://github.com/skydoves/ExpandableLayout?fbclid=IwAR0xII-4YFnpzpMAMFO6CahEv3UWmYoELHt0rAp9a4DoNFupxlyLuDuD6WA and I imported this module and gives me this error: Caused by: groovy.lang.MissingPropertyException: Could not get unknown property 'versions' for object of type...

How To Format Firebase Admin SDK configuration snippet In Kotlin from Java the following is a syntax of how to write the Admin SDK configuration snippet in Java as illustrated in the block code from firebase website. Kindly assist in reformatting it to work in kotlin. FileInputStream serviceAccount = new FileInputStream("path/to/serviceAccountKey.json"); FirebaseOptions options = new FirebaseOptions.Builder() .setCredentials(GoogleCredentials.fromStream(serviceAccount)) .setDatabaseUrl("https://cftesting-89dd7.firebaseio.com") .build();...

Android. How can I take a high-resolution photo? I'm trying to take a picture with my camera and output it to ImageView. Everything works fine, but the photo resolution is too low, or if i change attributes of ImageView - the picture is too small. How can I take a high-resolution photo? Maybe a bitmap image is not the best solution for this? My code: private fun openCamera() { val requestCode = 123 val cameraIntent = Intent(MediaStore.ACTION_IMAGE_CAPTURE) startActivityForResult(cameraIntent, requestCode) } override fun...

how to fix it: ArrayIndexOutOfBoundsException: 6 in kotlin fun main() { var arrTwoD : Array = arrayOf( intArrayOf(1,1,1,0,0,0), intArrayOf(0,1,0,0,0,0), intArrayOf(1,1,1,0,0,0), intArrayOf(0,0,2,4,4,0), intArrayOf(0,0,0,2,0,0), intArrayOf(0,0,1,2,4,0) ) var max = Int.MIN_VALUE for (x in 1..4){ for(y in 1..4){ var currentSum = arrTwoD[x][y] + arrTwoD[x][y+1] + arrTwoD[x][y+2] + arrTwoD[x+1][y+1] + arrTwoD[x+2][y] + arrTwoD[x+2][y+1] + arrTwoD[x+2][y+2] max = kotlin.math.max(max, currentSum) } } println(max) } output: Exception...

how to intialize intent in fragment in Kotlin? Im recieving an null pointer Exception Error Logcat: 2020-07-05 104252.821 20008-20008/com.riddhi.nfine E/AndroidRuntime: FATAL EXCEPTION: main Process: com.riddhi.nfine, PID: 20008 java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.riddhi.nfine/com.riddhi.nfine.Income.AddBankFragment}: kotlin.KotlinNullPointerException at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2843) at...

How to convert an arithmetic expression of a string type to an integer? fun main( args : Array) { var str:String = "(%d + %d)" var str1:String var a:Int = 12 var b:Int = 13 str1 = String.format(str,12,13) var c:Int = str1.toInt() print(c) } stack trace: Exception in thread "main" java.lang.NumberFormatException: For input string: "(12 + 13)" at java.base/java.lang.NumberFormatException.forInputString(NumberFormatException.java:68) at java.base/java.lang.Integer.parseInt(Integer.java:638) at...

Android Google One-Tap googleIdToken returns null after success authentication I followed the document to implement the logic to handle user's response. class YourActivity : AppCompatActivity() { // ... private val REQ_ONE_TAP = 2 // Can be any integer unique to the Activity private var showOneTapUI = true // ... override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {...

How to return a value of object that's being done operation of on Kotlin (similar to double dot operator in Javascript)? In Javascript, there's an operator like double dot (..) where you can do an operation on the said object, and then return the modified object altogether instead of returning the function result. Example: var a = [1, 2, 3] return a..push(4) // returned data: array of [1, 2, 3, 4] Is there any such operator in Kotlin? I want to change: var a = mutableListOf(1, 2, 3) a.add(4) return a into: var a = mutableListOf(1, 2, 3) return (a..add(4)) or something like that. Thanks.

java.lang.ExceptionInInitializerError in self-referential objects? I'm having problems with the jvm compiler. I'm trying to write a factory method for classes. The factory method has an init() block that helps to define behaviour for the new object. While this method compiles for JVM, I encounter a problem when running it: java.lang.ExceptionInInitializerError Caused by: java.lang.IllegalArgumentException: Parameter specified as non-null is null: method type.ProblematicKt.nullable, parameter $this$nullable Apparently, the object isn't yet defined when I...

i have created a layout which consist of many imageButton , now i wanted to make each button rounded what will be the shortest method to do this without changing my code much i have tried using function fun def(drawableId: Int, layoutId: Int) { val bitmap=BitmapFactory.decodeResource(resources, drawableId) val rounded=RoundedBitmapDrawableFactory.create(resources,bitmap) rounded.isCircular=true val image = root.findViewById(layoutId) as ImageButton image.setImageDrawable(rounded) }

Kotlin help please I'm beginner hello dear forum could u please show me how to send information from Edit text login and Edit text password from main activity to Edit text login and Edit Text password to second activity? with shared preference please write only Kotlin I'm beginner I don't know Java this is my main activity override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) setContentView(R.layout.activity_main) val Btnregistr = findViewById(R.id.Btnregistr) val...

How to notify and update list when item has been deleted using Groupie RecyclerView library and Kotlin I have a RecyclerView implemented with the Groupie library and I can delete an item from the list fine, however need to update the view to see the change. I'd like to have something like notifyDataSetChanged() instead, so the list updates immediately. I'm a bit confused at this stage though, try a few different ways to get an interface from the class that hosts my view holder to be triggered from the fragment that holds the adapter but I think I'm stuck now if I could get some help please....

Why is HoughCircle's return value circles empty I am experiencing a problem regarding the HoughCircle algorithm in OpenCV. I am coding for android (kotlin) The code is as follows: val bitmap: Bitmap = previewView!!.bitmap ?: return val mat = Mat() Utils.bitmapToMat(bitmap, mat) Imgproc.cvtColor(mat, mat, Imgproc.COLOR_RGB2GRAY) Imgproc.GaussianBlur(mat, mat, Size(11.0, 11.0), 0.0) val circles = Mat(...

custom xml deserializer in jackson for enum I'm have a lib's enum look like this: enum class VatRate { none, tax10, tax20 } I can't modify this enum. And I need to deserialize VatRate from xml like this: vat10 I know how to create and use mixins with jackson. But how to create simple value parser for enum like fun stringToVat(value: String): VatRate ?

How to change the visibility of actionbar menu group? What I need: When I'll click the Edit option (item_edit) from the action bar menu, the group item_menu_normal will not be visible and the group item_menu_edit will be visible XML code in the menu onOptionsItemSelected function of the relevant activity override fun onOptionsItemSelected(item: MenuItem): Boolean { // Handle item selection return when (item.itemId) { R.id.item_edit -> { true...

Videos download and save in cache(Not accessible from other folder or app) Android I'm searching for the problem of downloading videos from AWS and save them in cache so that no one can access our videos. Look like youTube app where they store the video in download activity and user can play them offline. I'm tried to get the solution but not be able to find out the proper why to do this task. Kindly suggest me the proper way of securing the video.

Constructed injected interface not accessable in the class I'm following the Developing Spring Boot Application with Kotlin tutorial. In addition to that explained in the tutorial, I have also added a @Service in between the Controller and the Repository. Therefore, this is the flow - Repository is injected to the Service and then, the Service is injected into the Controller. Here is the code: Repository interface interface...

Android ENOENT (No such file or directory) while opening .csv file I have started building app in android that will read .csv file. According to information on other posts that i have found on stackoverflow i tried several solutions but neither of them work for me. To read .csv file I use: "implementation "com.github.doyaaaaakenkotlin csv jvm0.10.4" I added permissions to write and read external storage (although i use only internal storage) but it didn't help anyway. Constantly i get error like below: E/AndroidRuntime: FATAL EXCEPTION: main Process:...

Android Kotlin RecyclerView Adpater onCreateViewHolder no called This is my adapter creation. groupsAdapter = GroupsAdapter(groupsVM) groupsRecyclerView.apply { // use this setting to improve performance if you know that changes // in content do not change the layout size of the RecyclerView setHasFixedSize(true) // specify an viewAdapter adapter = groupsAdapter // use a linear layout manager layoutManager = LinearLayoutManager(context) } Then I set...

Multiply an int by 30, 31, 32 - are these really optimized by the compiler? (effective java says so) I have been reading Effective Java, 3/E. While reading the part regarding hashcode, (page 51) I noticed the book saying A nice property of 31 is that the multiplication can be replaced by a shift and a subtraction for better performance on some architectures: 31 * i == (i