I am new to Kotlin (New to the world of programmers) and i am not getting what im doing wrong in this code Well hello there! As you know i am new to the world of programmers and i just started learning kotlin and i dont know why am i not getting the result. What i expected --> either "your office is closed" or "you are in office" VS What i got --> 'Process finished with exit code 0' No other result, just this. This is the code: fun main() { val hour = 6 val isWeekend = true var message:String = "nothing" if(isWeekend) { message = if ((hour > 9 && hour < 15)) {...

How to fix two API requests with flow coroutines I have problems to execute two flows with efficient way. Sometimes I have to trigger this method(click on button) twice to have different result it seems that sometimes flow is not triggered well. What could be problem here? My result I would like to achieve. CLick on button -> 1 flow triggered with success result -> (get data from 1 flow) to trigger 2 flow with new data and with success -> update UI usecases class GetImageQuotePictureItemUseCase @Inject constructor(private val api:...

Can't put variables for kts script engine in kotlin I have this code: fun main() { with(ScriptEngineManager().getEngineByExtension("kts")) { put("i", 3) val res2 = eval("i") println(res2) } } which gives me this error: Exception in thread "main" javax.script.ScriptException: error: unresolved reference: i i ^ The evaluation works fine, if I dont try to reference the variable it all works fine. What am I doing wrong to add a variable?

Automatically indent enum parameters table-like in IntelliJ Say I have an enum like this: public enum TestEnum { TEST1(5, 6, 18, 9, 3), TEST2(10, 21, 4, 5, 34), TEST3(4, 5, 8, 2, 16), TEST4(3, 1, 92, 67, 22); TestEnum(int i1, int i2, int i3, int i4, int i5) { } } How can I automatically indent the parameters for the enum to look like this: public enum TestEnum { TEST1 (5, 6, 18, 9, 3), TEST2 (10, 21, 4, 5, 34), TEST3 (4, 5, 8, 2, 16), TEST4 (3,...

Disable ads after in-app product purchase with in-app billing 5 I have set up in-app billing 5 in my application which is mainly about disabling Admob ads after the user makes a purchases , after the user pays for the in-app product , I would like to know what are the possible ways to disable ads after the purchase is made , I have thought about using product flavors but not sure if it is the right approach to follow , on the other hand i'm not using any local or remote database to save the user product purchase details , i'm here seeking an advice from...

How to have multiple custom themes in jetpack compose? My current code is as follows: @Composable fun AppTheme(darkTheme: Boolean = false, content: @Composable() () -> Unit) { val colors = if (darkTheme) DarkThemeColors else LightThemeColors MaterialTheme( colors = colors, typography = MaterialTheme.typography, shapes = MaterialTheme.shapes, ) { content() } } which im calling in main activity like that: @Inject lateinit var application: WeatherApplication override fun...

How to get File object from assets? I have a markdown file in my assets folder. I am using a markdown viewer which takes java.io.File Object as an argument to parse the file on screen. But i don't know how to get a File Object from a file in assets folder. Is there a way i can achieve this. I tried URI way but it failed. This is my code snippet which may help val markDown = File("file:///asset/GalacticAstronomy.md") if (markDown.exists()) { Toast.makeText(baseContext, "File exist",...

How do I allow only one specific fragment to have both portrait and landscape orientations in Android? In my Android application, I have added android:screenOrientation="portrait" to all activities in my Android.manifest and android:orientation="vertical" to every activity's/fragment's respective layout so that the app can only be viewed in portrait mode. However, there is one fragment in particular that I want to enable both portrait and landscape orientations. This fragment extends the DialogFragment() class as it's a full-screen fragment. This fragment is contained within another fragment,...

Replace baseContext in Fragment I have a little problem with baseContext in Fragment, in a nutshell, I'm making an application with Retrofit and RecyclerView, and for practice I decided to make them in Fragment, and then I ran into a problem that I don't know how to replace baseContext in override fun onResponse, I just replaced it with context and it still doesn't work import androidx.lifecycle.ViewModelProvider import android.os.Bundle import androidx.fragment.app.Fragment import android.view.LayoutInflater import...

What is wrong with my code. I am unable to draw on the screen I have checked my code several times and don't know where is it going wrong. i am trying to build a drawing app and after doing all this code I am unable to get any output. Not able to draw on the canvas. please help me get rid of this issue. This is my DrawingView.kt package com.example.drawingapp import android.annotation.SuppressLint import android.content.Context import android.graphics.* import android.util.AttributeSet import android.view.MotionEvent import android.view.View import...

onClick() in LazyColumn I am trying to set onClick() in IconButton like this IconButton(onClick = { navController?.navigate(NavigationScreen.Search.route) }) { Icon( painter = painterResource(id = R.drawable.hamburger_setting), "UserTweetSetting", modifier = Modifier .size(12.dp) .align(Alignment.CenterVertically),...

kotlin coroutines trying to build recipes app based on recipessdb with kotlin +coroutines and mvvm but i have an error that i don't know here is my api sevice interface GetDataServices { @GET("categories.php") suspend fun getCategoryList(): Category here is my Repositor class Repository( var getDataService : GetDataServices ?=null, var dao: RecipeDao?=null, var application: Application ){ //-1-get Main category from api suspend fun getMainCategory(): Category? { var res_rep= getDataService?.getCategoryList() return res_rep Log.v("res_rep_get",res_rep.toString())...

Android Studio Cannot Install Any SDK (Im Beginner) Im starting Android Programming so Im installing Android Studio. When Im trying to run the wizard, I get an error: "Missing SDK" I didn't download any SDK and I know that Android Studio can download and install SDK's itself. Then, I click on Next to see what's happening: I know this page should has a Todo list to download SDK's and it will...

Saving radio group checkedId with SharedPreferences to make the radio button selection to be the same when resuming Kotlin I'm trying to program an android app with android studio that counts steps taken by the user. I'm trying to make a settings/options activity where the user can both set their height and preferred measure unit. I was able to code the height selection so that it is saved into SharedPreferences so that every time the user returns to the settings activity the height stays the same. I'm trying to do the same to the measure unit selection but it doesn't seem to work. I've put the measure unit...

What is the type of a Kotlin 'data class'? I have a situation where I need to create a copy of data class object. I don't know in advance which of the many data classes I have will come in into the function. I do know, however, that only data classes will be used as input to this function. This is what didn't work: fun doSomething(obj: Any): Any { obj.copy(...) //

Hoping to display a value every 3 seconds using thread.sleep. However, it's not working im taking this kotlin basics in google and im in the "intro to debugging" section.. total noob here and i've managed to plow through the subjects and now im stuck here.. so the expected outcome is for the textview to display a quotient every three seconds but when i run the app, it shows a static value of 60. private val TAG = "MainActivity" MainActivity : AppCompatActivity() { override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) Log.d (TAG, "this...

Incompatibility between TornadoFX and lowagie iText I have a desktop application developed with TornadoFX (jaxaFx + kotlin) and when I insert the lowagie iText library in the dependencies declaration, the application stops working. When I compile with the iText library, the application just doesn't run. It doesn't return any error messages and doesn't even enter Main. Has anyone had a similar problem? dependencies { implementation("org.jetbrains.kotlin:kotlin-stdlib-jdk8:1.3.72") implementation("org.jetbrains.kotlin:kotlin-reflect:1.3.72")...

Compose - Hoverable &amp; clickable line I'm trying to make a composable with a line shape. These lines will be connecting any two coordinates together, meaning it won't be a straight horizontal/vertical line, I know I can use divider for that. I can do a line in drawWithCache (compose desktop's equivalent of Canvas), but these lines are neither hoverable nor clickable. Afaik clipping a box with a custom shape won't be helping here because hover and click events will still work with a rectangle shape. Is there any way at all that I...

Getting incoming call phone number in KOTLIN Hi im looking for a way to detect incoming calls in KOTLIN. Ive successfully implemented firebase but im stuck here. Telephony manager seems have been deprecated so i have no idea on how to achieve my goals Thanks to anyone will answer

Problem with displaying admob ads inside vpn app I'm having trouble showing admob ads inside my vpn app When users from countries with low eCPM connect to VPNs from countries with higher eCPM, Google does not know the real country of the user and therefore limits the sending of ads. For example, it shows ads that are for the UK to people in Japan and vice versa There is no way that admob remembers the user's country during the initial implementation? or any other solution

How to allow memory grwoth in tensorflow 1.15 for Java? I'm using kotlindl, which runs on tensorflow java 1.15. I expected my code to run on an RTX GPU, but I ran into an error described in this Tensorflow issue. The solution to this issue, it...

Kotlin-Java Script Warnings coming for basic project I am trying to execute a basic Kotlin JS project but getting warnings. pls help how to fix the warnings. Compiled with problems:X WARNING asset size limit: The following asset(s) exceed the recommended size limit (244 KiB). This can impact web performance. Assets: WordCountWeb4.js (254 KiB) WARNING entrypoint size limit: The following entrypoint(s) combined asset size exceeds the recommended limit (244 KiB). This can impact web performance. Entrypoints: main (254 KiB)...

how to lock device for fixed time with kotlin or flutter hey I wanna develop app that lock the device for a while it's like this app bellow https://play.google.com/store/apps/details?id=forinnovation.phoneaddiction&hl=EN I can lock screen one time, but users can unlock easily app needs to be foreground always does anyone know how to realize that?? It's just for android (if available for iphone, please let me know) and using...

No noarg super constructor for CLASS CLASS Kotlin 1.5.0 I have a error when trying to build my android app after bumping the kotlin version to 1.5.0. I am thinking its related to haveing a parcelized class and using the no-arg plugin. I have the following class import android.os.Parcelable import kotlinx.parcelize.Parcelize sealed class CDSAppbarProfile( val count: Int ) : Parcelable { @Parcelize class User( val origincount: Int, val imageUrl: String ) : Parcelable, CDSAppbarProfile(origincount)...

What are the UI blocking thread operation in Java or Kotlin Is there a documentation list of all UI blocking operation in Java or Kotlin like InputStream.read()? Or other way to identify blocking operation without needing to run the project?

Kotlin list extension function I have an extension function shown below infix fun List.sumList(that: List) = this.zip(that, Int::plus) I am now trying to make this extension function generic so that it works on list of integers as well as float and double. listOf(1,2,3).sumList(listOf(10,20,30)) gives me [11, 22, 33] Below is my attempt of writing the same extension function using generics inline infix fun List.sumListNew(that: T): List = when { T is Double -> this.zip(that, Double::plus) else ->...

How to implement zoom feature for RecyclerView? I need to implement a RecyclerView using GridLayoutManager to represent seats of a stadium. On item (seat) selection, some information pops up and finally the user can book it. The problem is, high number of seats per row on a small screen make it difficult for the user to select an item. So, I want to implement a zoom feature where user can zoom in a part of the RecyclerView to make it easier to click on an item. How's id done?

Kotlin Program Not Running I have the following kotlin code fun main() { println("How many mines do you want on the field?") val mines = readln().toInt() val minefield = Minefield(mines)... However, once I enter a number, it doesn't do anything. When I attempted to debug it, I saw that it took mines in, but kept expecting something. There's no other readln() in the initializer, and the Minefield class signature is class Minefield(mines: Int) What's going wrong?

How to cancel CountdownTImer in Android kotlin? I want to cancel the timer when user presses the back button or minimizes the app. I have tried using cancel() on 'override fun onDestroy()' but still the timer is running. Below is my countdown timer code countDownTimer = object : CountDownTimer(Constants.timerDuration, 1000) { override fun onTick(millisecondFinished: Long) { binding?.tvTimer?.text = (millisecondFinished / 1000).toString() Log.i("millis", "onTick: $millisecondFinished") }...