Blank screen on device after running kotlin app I'm working on a kotlin app that simply display a pop-up when buttons are pressed, but for some reason whenever i run the app all i get is a blank white screen. I've tried so many solutions online all to no avail. Here's my Main Activity code: import android.app.AlertDialog import android.os.Bundle import android.widget.Toast import androidx.appcompat.app.AppCompatActivity import androidx.databinding.DataBindingUtil import com.example.popup.R import...

How to register custom configuration properties converter @ConfigurationPropertiesBinding In Spring Boot project, the configuration in the YML file can be automatically converted to an @ConfigurationProperties annotated bean. But I need to override behavior to make non standard conversion because I inject value from environmental variable (which is a sting) but s should be AS map. There is error *************************** APPLICATION FAILED TO START *************************** Description: Failed to bind properties under 'app.push.firebase.application-keys' to java.util.Map:...

Kotlin Android studio New Version When i am using android studio new version with below new method for project level gradle app level gradle dependency not working. Thanks in advance buildscript { dependencies { classpath 'com.google.gmsgoogle services4.3.14' } } plugins { id 'com.android.application' version '7.3.1' apply false id 'com.android.library' version '7.3.1' apply false id 'org.jetbrains.kotlin.android' version '1.7.10' apply false }

Material Circularreveal In XML Android Someone know how to use these code in image. I mean com.google.android.material.circularreveal.......... I didn't see any tips, any code related to it and no one guide in youtube :< I WILL THANKS SO MUCH ABOUT YOUR HELP ^^

spring inject proxy based on annotation on constructor parameter I am stuck in this problem for a while now and can't seem to solve it. I think I'm just lacking the knowledge were to look for a solution. Picture the following code: @Service class Service(@Loggable private val repository: SomeRepositoryInterface) { fun create(command: Command): Tag { return repository.save(command.toEntity()) } } What I wanna do, is whenever a parameter is annotated with Loggable, I want this particular instance, repository: SomeRepositoryInterface wrapped...

Error: java.lang.NullPointerException, need any help on getting it to work i'm getting this error each time the button Medir is pressed, everything works with the rest Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'android.content.pm.ApplicationInfo android.content.Context.getApplicationInfo()' on a null object reference this is the MainActivity code: package com.example.kotlincalcinsu import android.content.Intent import androidx.appcompat.app.AppCompatActivity import android.os.Bundle import android.widget.Button...

Value Forbidden of type java.lang.String cannot be converted to JSONObject When I try to get historical data from yahoo like this: private fun getStockHistoricalData(){ val queue = VolleySingleton.getInstance(this) val query = "https://query1.finance.yahoo.com/v7/finance/download/AAPL?period1=1635962336&amp;period2=1667498336&amp;interval=1d&amp;events=history&amp;includeAdjustedClose=true" val request = StringRequest( Request.Method.GET,query, { response -> println("response = $response") }, { error -> println("Error...

How to slow down ImageAnalyzer? I try to understand the "Getting Started with CameraX" tutorial in particular the image analysis. typealias LumaListener = (luma: Double) -> Unit class LuminosityAnalyzer(private val listener: LumaListener) : ImageAnalysis.Analyzer { private fun ByteBuffer.toByteArray(): ByteArray { rewind() // Rewind the buffer to zero val data = ByteArray(remaining())...

DatePicker inside textfield Is there any way to connect textfield with datepicker in layout. Like this solutions with onFocusChangelistener and clickListeners, in my opinion, are bad. maybe there is a convenient way?

PopUp button showing on bottom Kotlin i am making a popup menu on a fragment, the problem is when i show the popup menu that it shows on the bottom of the screen and I want it to show on the right high corner, does anyone know how to solve it? Thanks in advance!!!! Code: override fun onCreateView( inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle? ): View? { // Inflate the layout for this fragment binding =...

How to extract URI argument result from deeplink navigation My goal is to extract the URI that was passed to my navController to navigate to destination B so from A I do this navController.navigate("myApp://destination") From B I want to get this "myApp://destination" uri, this is because extra logic needs to be done after going to B from A, for this, I don't want to use any arguments in the navGraph So after debugging I see that I can access mData from arguments and see the uri <a href="" rel="nofollow...

Retrofit request, skips a property when i send it I have this request interface CertApi { @POST("certificate") suspend fun getEnrollment( @Header("x-passcode") testApiKey: String, @Body certRequest: CertRequest ): CertResponse } when i try to send a request with this body @Serializable data class CertRequest( @SerialName("csr") val csr: String? = "", @SerialName("enrollment_profile_id") val enrollmentProfileId: String? = "", @SerialName("include_certificate_chain") val includeCertificateChain: Boolean =...

Room DataBase not inserting values into DB For some reason, Room isn't inserting data into DB, even when inserting data manually (custom values), and getting it later returns null. In-App Inspection (to check DB Table) shows that the values are non-existent and were never created in the 1st place. Which doesn't make sense because i manually inserted values @Database(entities = [Playlists::class], version = 1) @TypeConverters(ConvertorSong:class,ConvertorSongID:class) abstract class AppDataBase: RoomDatabase(){ abstract fun...

How can I get parcelized model with saved state handle on ViewModel? With main navigation I transfer parcelized model from one fragment to another, but I can't get model data with saved state handle via ViewModel. how can i get the data ?

Passing Firestore Data Through RecyclerView to Activity I'm trying to pass populated data that I'm getting through Firestore, when I press on a position on a recyclerview, onto another activity. However, I'm getting an error when I try to press on a recyclerview item. Is it because I'm passing intent.getParcelableExtra()!! and I need to pass something else? Thank you! This is the error: Caused by: java.lang.NullPointerException at...

How to execute a javascript function for every element in a list with Freemarker in Kotlin Ktor? I'm calling an api with Kotlin and Ktor to get a book in return as json response. From this response I want to load the book cover in my frontend Freimarker .ftl file. I'm doing this call in javascript and write it to html. When I'm calling the function like in my code shown, only the first element in the list get the book cover. The rest is empty. The javascript is executed as inline code in html. I was excepting this function will be called for every new item in the list. So what can I do...

Custom CollapsingTopAppBar Jetpack Compose The essence of the problem is that I want to write my own version of the AppBar that would include content as another Compose function. After looking at the source code of the current CollapsingTopAppBar implementation, I saw the following lines: @Composable private fun TwoRowsTopAppBar( ... scrollBehavior: TopAppBarScrollBehavior? ) { ... val pinnedHeightPx: Float = 64.dp val maxHeightPx: Float = 152.dp LocalDensity.current.run { pinnedHeightPx =...

I am getting error when I build the application in flutter Hello Everyone I am getting error when I build the apk in flutter project. I am not sure whether its is because of code or some setup issue. I think that there is something wrong in setupping flutter. The error states that: PS F:\FYP\Code\Recipedia> flutter build apk --build-name Recipedia --build-number 01 Building with sound null safety w: Runtime JAR files in the classpath should have the same version. These files were found in the classpath:...

Returning one of different object types from single function in kotlin I have the following structure at present: @Entity @Table(name = "table_app_settings") data class AppSetting( @Id @GeneratedValue(strategy = GenerationType.IDENTITY) @Column(name = "app_setting_id") val id: Long? = null, @Column(name = "app_setting_name") val name: String = "", @Column(name = "app_setting_value") var value: String = "", @Column(name = "app_setting_type") val type: AppSettingType, ) enum class AppSettingType { CHAR, STRING,...

Can't take a photo with CameraX I follow the "Getting Started with CameraX" of developer.android and the step to take a picture with a button doesn't work. I tried to know why, but I don't find anything. This is my code : typealias LumaListener = (luma: Double) -> Unit private var _binding: FragmentCameraBinding? = null private val binding get() = _binding!! class CameraXFragment : Fragment() { private var imageCapture: ImageCapture? = null private var videoCapture: VideoCapture? = null private var...

kotlin consumeEach() vs receive() I have some code of the format: class MyProducerClass { fun CoroutineScope.myProducerFunction(): ReceiveChannel = produce { // send some stuff to a channel } } class MyConsumerClass { val producerObject = MyProducerClass() fun CoroutineScope.myConsumerFunction(channel: ReceiveChannel) = launch { // Consume stuff from the channel } fun functionToBeCalledByApplication() = runBlocking {...

Spring boot using Webflux &amp; Kotlin: CRUD operation from inside a subscribed Mono is failing I'm in the process of testing how to query data from the "jsonplaceholder" API and save the received data to a local Postgresql database. When I make a call from Postman, the received data is returned correctly by "jsonplaceholder", but weirdly nothing is stored in the database. Maybe I'm just missing something in my code (see below), I don't know! This is a Spring Boot application with Webflux and Kotlin and Postgres'SQL as local database. Thanks in advance for any help! /* My model:...

LinkedBlockingQueue put null fails I have an implementation where in order to trigger when to close the thread I need to put null value into private var queue: BlockingQueue = LinkedBlockingQueue() however, when I do this it fails fun put(msg: Msg) { if (isEnabled) { queue.put(null) } } error is E FATAL EXCEPTION: main Process: com.example.viewpager2withtablayout, PID: 6771 java.lang.RuntimeException: Unable to start activity...

Existing file not visible in the filemanager I try to write logs in the file locally on the device, in order to do so I use such a logic class Logger private constructor(ctx: Context) { sealed class MsgType { data class Regular(val message: String): MsgType() object Termination: MsgType() } private var isLoggerReleased = false private val PARENT_DIR_NAME = "TestLogs" private val FILE_EXT = ".txt" @Volatile var isEnabled = false private var executor: Thread? = null @Volatile private var...

How to decode json data with Reified, Generics, Interface and Kotlin? How to decode json data with Reified, Generics, Interface and Kotlin? I created a project where i put the code and the instructions to run: https://github.com/paulocoutinhox/kotlin-gson-sample But basically the code is: import com.google.gson.Gson import com.google.gson.reflect.TypeToken interface Serializer { fun decodeValue(data: String): T? } class JsonSerializer : Serializer { override...

Decode raw H265 video using MediaCodec not playing at all I have a raw HEVC (H265) video bytearray that I want to decode and play using MediaCodec without the use for `MediaExtractor. I learned a lot about NAL units and everything, but I can't get the codec to play. Here's my code (If your answers are in Java, it's fine!) : Thread { codec = MediaCodec.createDecoderByType(KEY_MIME) val inputFormat = MediaFormat.createVideoFormat("video/hevc", KEY_WIDTH, KEY_HEIGHT) inputFormat.setInteger(MediaFormat.KEY_MAX_INPUT_SIZE,...

How to convert String to int Color value I want to set background with gradient. This's my code: val startColor = "0xFFAC235E" val endColor = "0xFF640C35" val gradient = GradientDrawable( GradientDrawable.Orientation.LEFT_RIGHT, intArrayOf( startColor.toInt(), endColor.toInt() ) ) view.background = gradient and it through an exception: java.lang.NumberFormatException: For input string: "0xFFAC235E" If I replace startColor = 0xFFAC235E, the code above work fine. But that's not what I want. I need put...

Deep link notifications not working in android 12 (Not opening the app when user clicks on notification) It was working fine, the app was also in production. But recently we noticed that on android 12 when the user clicks on the notification it doesn't open the app and navigated the fragment/activity which the deep link has. But as soon as the user opens the app the deep link gets fired(if the user has previously clicked on the notification then) and moves user to the destination which was in the deep link. And also if the user is in the app and clicks on the notification it will work fine. But...

Realm Sync and Subscriptions From what I understand, Realm is a local database while Atlas is the cloud database. When a Synced Realm is opened, it takes either a partition or some subscription queries that determine what data should be synced from Atlas down to the local realm, and any further changes made to the local realm will be synced back up to Atlas. My question is, is it possible to query for data that is NOT synced in the local realm but exists in Atlas? For example, lets say Atlas contains user information...

insertIgnore of Exposed is not inserting data I have made this table,

object PartnerOwnerMappingTable : IntIdTable("partner_owner_mapping") {
  val ownerId = integer("owner_id")
  val driverUUID = uuid("driver_uuid")
  val partnerUUID = uuid("partner_uuid")

  val createdAt = timestampWithoutTZAsInstant("created_at")
  val updatedAt = timestampWithoutTZAsInstant("updated_at")
}

and I'm trying to execute this statement using the exposedrepo. ` PartnerOwnerMappingTable.insertIgnore { it[this.ownerId] = record.ownerId...