Spring Data JPA with Postgres issue with modifying a column dynamically Here's my @Query decorated method meant for updating a column with a new value. The column name is not fixed and is passed as an argument. @Modifying @Transactional @Query(value="UPDATE user SET column=newValue WHERE id=:id",nativeQuery = true) fun partialUpdate(@Param("id") id: String,@Param("column") column: String, @Param("newValue")newValue: String): Int Here's the stack trace 2021-04-01T151803,396Z [http-nio-8080-exec-1] WARN o.h.e.jdbc.spi.SqlExceptionHelper - SQL Error: 0,...

Copy parcelable data object How do I copy the parcelable data object I received through an intent from another package to the local object? Of course so that it includes the fields and their values. Must the parcelable object contain write(dest: Parcel, flags: Int)? I ask because I see the values are saved locally without this method.

Serialize JSON with Klaxon I'm trying to develop a system which alows serializing/deserializing of JSON for multiple types of classes in Kotlin. For deserialization I'm usung klaxon, but I also want to use it for serializstion. I've done some research on that, but didn't get a concluseve answer. So, can I do that? If so, how can it be done? Or should I use other library for this purpose? Here's my code package com.pineapple.threadio import com.beust.klaxon.Klaxon import com.beust.klaxon.TypeAdapter import...

progress bar doesn't fill the space it's supposed to I'm trying to achieve something like that: and I tried using card view and ended with that: and I have got a problem becaues I want the "water left" progress bar to go to the end of the card (as shown in the picture 1) but it doesn't change it's length (and I don't want to hard code that lenth), any ideas what can I do ? (code:

TornadoFX DataGrid not updating I'm using TornadoFX in Kotlin and have a DataGrid that is linked to an ArrayList called data, which gets updated. When updating the values in this ArrayList, the DataGrid is not being updated. I have looked in the documentation for some kind of refresh function as the coupling to the ArrayList seems to not be working, but there was nothing. private var datagrid: DataGrid by singleAssign() private var data = ORIGINAL_VALUE ... datagrid = datagrid(data) { ... } ... fun bar() { data =...

Cannot access 'com.android.build.gradle.internal.dsl.Lockable' on Android Studio Arctic Fox | 2020.3.1 Canary 12 how are you doing? Did you get this kind of error when writing a gradle plugin using kotlin DSL: Cannot access 'com.android.build.gradle.internal.dsl.Lockable' which is a supertype of 'com.android.build.gradle.BaseExtension'. Check your module classpath for missing or conflicting dependencies Here is the complete code: import org.gradle.api.Project import com.android.build.gradle.BaseExtension import org.gradle.kotlin.dsl.getByType private typealias AndroidBaseExtension = BaseExtension fun...

android.database.sqlite.SQLiteException: not an error (code 0 SQLITE_OK) I'm using this library to save , retreive and delete data , but whenever i try to perform any of those operations , it throws the above mentionned error , and this is the library that i'm using implementation 'com.github.p32929AndroidEasySQL Library1.4.1' This is my code private fun deleteCartDetails() { val easyDB = EasyDB.init(this,"ITEMS_DB") .setTableName("CART_TABLE") .addColumn(Column("item_id", *arrayOf("text","unique")))...

How could I update a variable to change its value? (Kotlin) As the question says, How would I be able to make a variable take a new value when the button is clicked? Ex. var count = 0 goal2View.setOnClickListener{ goalCount.text = count.plus(1).toString() } Now I want count to be equal to 1 so when the next onClickListener is executed the goalCount.text would print a value of 2. Also goalCount is the textView in my activity. goal3View.setOnClickListener{ goalCount.text = count.plus(1).toString() } Now the goalCount...

How can I do the kotlin mediaPlayer shuffle play I am trying to create shuffle mode for the music-player application. The problem is; The sound on my list only plays once and stops when finished. but I want all the sounds on my list to be shuffled and played automatically. I am very new to Android programming, I tried hard but failed. I also tried the setOnCompletionListener {} method but it didn't work. I need help. thanks everyone here are my sample codes; class MainActivity : AppCompatActivity() { var mediaPlayer = MediaPlayer()...

Sum of two generic types in kotlin How do I use generics in Kotlin to add two numbers of different types? Below is my unsuccessful attempt. fun add(a: T, b: U): Any?{ return a.plus(b) } operator fun U.plus(b: U) {} fun main(){ println(add(4, 5.6)) } I searched for the "plus" operator in Kotlin and it seems that there is no function body when the plus operator is overloaded. /** Adds the other value to this value. */ public operator fun plus(other: Byte): Int /** Adds the other value to this value. */ public...

ViewPager2 appears only after a focus change I have a ViewPager2 in my app that gets populated with fragments dynamically based on a response from a websocket request. I also have a AppCompatImageView that has an image set in the XML layout(but later gets a new bitmap to display dynamically). Now I have a problem that the ViewPager2 and the AppCompatImageView does not show when the app starts, the only way to show them is to force a focus change like opening a popupmenu or alertdialog. The really weird thing is that I have another...

Context sendbroadcast not working in real devices I created a Wdget, where I send a message from MainActivity via context.sendBroadcast. The program works fine on emulators, but no message is sent on real devices. Below is the code: MainActivity: val intent = Intent(ActualInfoWidget().WIDGET_LC_UPDATE_BUTTON) applicationContext.sendBroadcast(intent) Widget: val WIDGET_LC_UPDATE_BUTTON = "android.appwidget.action.WIDGET_LC_UPDATE_BUTTON" override fun onReceive(context: Context?, intent: Intent?) { if(WIDGET_LC_UPDATE_BUTTON ==...

Kotlin - Map integers to lists of lists I am trying to find the proper syntax to initialize "Map" in kotlin. I am a bit new to kotlin. I have variables initialized in my class as this: var jitterMs: Double = 0.0 The way I am trying to initialize is this: val bandMap: Map = emptyMap() It gives me an error that a proper getter or setter is expected, and I think that's because it just doesn't understand what I am trying to do. What is wrong with this syntax? Thanks,

How to get a List type with type arguments in Java annotation processor Let's say I have a property @MyAnnotation class Foo { var bar: List = emptyList() } And I'm writing an annotation processor for the code above: class AnnotationProcessor : AbstractProcessor() { override fun getSupportedAnnotationTypes(): MutableSet = mutableSetOf(...) @KotlinPoetMetadataPreview override fun process(annotations: MutableSet?, roundEnv: RoundEnvironment? ): Boolean { val barPropType: TypeMirror =...

creating android library on jitpack error I am following tutorial: https://medium.com/@anujguptawork/how-to-create-your-own-android-library-and-publish-it-750e0f7481bf to create android library. Everything works fine, but when I go to Jitpack, script under "LOG" has red color. This means there is error and I am unable to use m library in android projects. This is what the script says when I open...

Cast Object in Binding expression Is there a way to cast an Int to a String in a binding expression that I am using in android:text? For now I have a BindingAdapter set up to cast the Int using the Kotlin syntax as, but I was wondering if there is an expression to do this directly in xml? Thank you in advance.

How can I combine the events "setOnClickListener" and "swipe to the right" or "swipe to the left"? I'm new in Android and even newer in Kotlin and I have a problem. I am able to link a LinearLayout with the events "swipe to left" or "swipe to right" and it works properly. But if that LinearLayout contains buttons, then it doesn't work. When the LinearLayout has the buttons the only thing working are the button's "setOnClickListener" but not the "swipe" linked to the LinearLayout. I need both events (onclick and swipe). I share here the code of a little project with this problem. Any help...

How to insert into a map to a list of lists in kotlin? I have this map to lists of lists: val bandMap: Map = mutableMapOf() How do I insert into this list? I have something like this so far: bandMap[2].add() this will insert a 2 as the key. I need to put something inside of add() to insert values into the first and second list now as a value pair, such as rsrp: -120,-90,-50,-60; rsrq:-10,-4,-6 The catch is that I don't know what the values are, and am trying to add them into a list one by one. For example, add to rsrp list under band 4,...

Discover Android service from Windows 10 I want to be able to resolve a service on my Android phone from my Windows 10 computer. On the desktop I use the library JmDNS : val SERVICE_TYPE = "_myservice._tcp.local." val SERVICE_NAME = "MyService" class SampleListener : ServiceListener { override fun serviceAdded(event: ServiceEvent) { println("Service added: " + event.info) } override fun serviceRemoved(event: ServiceEvent) { println("Service removed: " + event.info) } override fun...

Spotify-Play songs using custom play list from Spotify media player I am developing some kind of Spotify and Instagram Combo application on native android(kotlin). I have integrated Spotify SDK into my application and as per SDK'S scenario my all songs from the application will be played in the Spotify media player. However, I have created an inner player that receives progress from Spotify player and update accordingly such as seekbar, play/pause buttons. I am facing a problem here which I am unable to solve. Following is my problem scenario. The problem is...

Space between items in RecyclerView I have a RecyclerView, which I fill with items (ImageView + TextView from another layout) via an Adapter. The problem is that the distance between two items changes depending on the text. I would like that the space between all the items was always the same. How can I achieve this? Here a picture reflecting the problem: Here the xml containing my recyclerView: Here the xml for an item: Thanks in...

Changing code from Activity to use in Fragment I'm trying to update my app, but ran into a problem. You see my previous app had multiple functions. One of them was a voice recorder. This voice recorder function consisted of 1 activity and 2 fragments. The activity I used acted as a MainActivity to house the two fragments, which had they're own separate functions. One was used to record sound. The other was used to save those recordings and replay them. Now the current app I'm trying to build is an updated version of this app, which will...

How to correctly return the Kotlin class to the callback С++? There is a shared addin library and a main program written in C++. Header addin.h: class IAddIn { public: virtual const char* Test()= 0; }; library: #include "addin.h" class AddIn : IAddIn { public: const char* Test() { return "libC test ok"; } }; int GetClassObject(IAddIn** pInterface) { if (!*pInterface) { pInterface = (IAddIn) new AddIn(); //return (long)*pInterface; } return 0; } main: #include "addin.h" #include #include //...

Cut pairs with empty values from map I'd like to filter out all the pairs with empty values val mapOfNotEmptyPairs: Map = mapOf("key" to Some("value"), "secondKey" to None) expected: print(mapOfNotEmptyPairs) // {key=value}

Q. Kotlin for Android Developement: Text Field to TextView? I started learning to develop Android applications in Kotlin 2 weeks ago. I'm currently trying to make some changes to my tip calculator application, and trying to display the text field input into a totalCost TextView (where you see the "Cost of Service" text below the "Tip Amount: $20.00"), but I've no idea how to go about doing that. And here's the code: activity_main.xml...

How to create spinner item using dataCollection from firebase? I have 2 firebase data collection (student, and tutorial). Student (studentID, fname, lname, fk_tutorial) Tutorial (ID, className, day, time) Here is what I am trying to achieve, generate spinner from Tutorial data (say there are 3 entries in Tutorial collection), then it will generate 3 items, in this format className + " " + day " " + time. which the Tutorial(ID) hidden from the user. When the user hit "SAVE" button, the system will save the Tutorial(ID), instead of className + " " + day "...

Show dialog confirm to get permission "display over other apps" I want to show a dialog on Google Store to get permission "display over other apps". These below images will describe to what I say. Help me!!! Thank you in advance!

How to switch and save between activities? (Kotlin) I have 2 activities (activities 1 and 2 for clarity), 1 displays editTexts, and 2 transfers those editTexts into viewTexts. When the user first opens the app, I want them to see activity 1, but when they click the button that moves to activity 2, I want the app to be locked into that activity, and should they restart the app it should open on 2. However, if they click a button in activity 2, then it should move back to activity 1 and stay there. I've tried using a boolean statement for the...

My App Keeps Stoping whenever i ran the app in android studio I am currently working on login page and now my app is stoping. My kotlin code is here. This is my practice app and its base language is kotlin. Here Xml code helps me to create a login page and the kotlin code here helps to toast package com.venkat.kotlin import androidx.appcompat.app.AppCompatActivity import android.os.Bundle import android.view.View import android.widget.Button import android.widget.EditText import android.widget.TextView import android.widget.Toast class NewActivity :...

Caused by: org.springframework.beans.FatalBeanException: A dependency cycle was detected I've changed interface that I was implementing from UserDetailsService to JwtUserDetailsService cause I started getting permissions and roles from token, not from db. But started getting the following exception Caused by: org.springframework.beans.FatalBeanException: A dependency cycle was detected when trying to resolve the AuthenticationManager. Please ensure you have configured authentication. at...