New to kotlin & android. I have a button and when it is clicked, I display a toast. I want to format the toast before I display it. I wanted to do something like Toast.makeText().setGravity().show() but setGravity doesn't return the toast to show, so it seems I can either define a toast variable to setup before I show it or for chaining, I could use .also{}. Just wondering if there are any pluses or minuses of each method or what is the "Kotlin way?" Thanks. Here is code for both ways I set it up.

trueButton.setOnClickListener {
            val toast = Toast.makeText(
                this,
                R.string.correct_toast,
                Toast.LENGTH_SHORT
            )
            toast.setGravity(<http://Gravity.TOP|Gravity.TOP>, 0 , 200)
            toast.show()
        }

        falseButton.setOnClickListener {
            Toast.makeText(
                this,
                R.string.incorrect_toast,
                Toast.LENGTH_SHORT
            ).also {
                it.setGravity(<http://Gravity.TOP|Gravity.TOP>, 0, 200)
            }.show()
        }

Hi. I have a working Kotlin 1.3.61 project, using gradle 6.0.1, nothing fancy, simple jvm/jdk11 build. I want to create a few utility scripts that could be used for tooling purposes, nothing that would go to production. (Usually I do it by creating some kotlin file with

main()

inside test source root) So I created the new

script

directory and a

...ws.kts

file inside it, but here I have three issues: • the "use classpath of module:" toolbar menu is not present • script, when run, has working directory set to kotlin home, not project dir • although the build directory from project is present on classpath, the dependencies are not What am I doing wrong?

Hi ! im new here how to setup kotlin in IntellJ IDE , have seen couple of video on youtube and read article but damn when ever i click the

Run button

it shows set configuration. Feel Intellj is really complex.

currently use kotlin for backend and not an app engineer so i dont understand most article on coroutines which target android folks.

Hello, I want to participate in a project to get some team working and someone else's code understanding skills as well as get more experience with programming, libraries and test automation. Please note that the only useful thing I've created is a simple internal tool for me and my colleagues, so I'm kinda very junior with some TornadoFX and Android SDK knowledge. If you know where I can find such a project or you have any advice for me - please, do not hesitate to reply. Thank you a lot and have a great day!

Hello all, We want to start with Kotlin multiplatform, Can anyone please tell me that what is the scope of third party apps? I mean if there is any third party analytic SDK which currently we are using on native android and IOS, how we will accommodate these SDK'S with Kotlin multiplatform library or project you can say ?

How to write a function reference (like

someInstance::someFun

) but where the function has a receiver?

nope

Say I have

fun myCheck(): Boolean

which I want to repeatedly call until it returns false. If I use

while (myCheck()) {}

then I get a warning saying “control flow with empty body”. So I guess

while

is supposed to be used with a non-empty body. Does this mean there is a more appropriate way?

so can you do like

var m3 = mutableMapOf<String, Any

Is there some better form than .toByte() for case below?

val myVal: Byte
...
if(myVal != 0.toByte()) {}

Is there any way to create double or float range from String? I have strings like "0.1-0.5", "5.5-5.8", etc. in my configuration and I want to transform them to ClosedFloatRange/ClosedDoubleRange. I could create an extention function for String type but cannot instantiate those types as they are private. Also I wonder why integer ranges (IntRange,LongRange and so on) are public but floating point ranges are not.

How do I bind value from JSON to ListView ? Here's sample of my JSON

[{"kodenik":"2013129733","namakaryawan":"YASTI RIZKIA","kodebagian":"TRIE","tglupdate":"2019-12-09","tglabsen":"2019-12-09","jamin":"10:05","jamout":""},
{"kodenik":"2015184941","namakaryawan":"AGUNG SUBEKTI","kodebagian":"TUOL","tglupdate":"2019-12-09","tglabsen":"2019-12-09","jamin":"17:03","jamout":""}]

I want to build a query string with coolest way

val query = "INSERT INTO table (id, name, age) VALUES (?,?,?)"

this is ordinary way (i usually use) and the problem is, the parameter `?`need to append according to the increase or decrease of column

id, name, age

so i tried,,,

var column = "id, name, age"
val query = "INSERT INTO table (${column}) VALUES (${(1..3).forEach { ? }})"

the part

${(1..3).forEach { ? }}

is incorrect, i don’t know how to do. hope you got me,

Does Kotlin have any built-in libraries for HTTP Requests similar to Java 11's built-in HTTPClient?

The code should be exactly the same. Am I missing something?

I would like to ask regarding setter and getter, I have piece of code like that. Whenever I tried to access the variable listToko on another class, it always return empty string, while when I println resp, I know there's the value inside resp. Is there something wrong with how I use setter / getter ? Thanks

Failed to run

kotlinc

. How do I fix it? (It may occur after updating OS X to 10.15.3.)

Hi, I would like to ask, I have this kind of code below :

var abc2 = client2.newCall(post2).enqueue(object: Callback {
            override fun onResponse(call: Call, response: Response) {
                if(response.isSuccessful){
                val resp = response.body?.string()
                val gson = GsonBuilder().create()
                val feed: List<Feed> = gson.fromJson(resp,Array<Feed>::class.java).toList()
            }

            override fun onFailure(call: Call, e: IOException) {
                println("GAGAL")
            }
        })

    class Feed(val feed: List<Penyimpangan>)

    class Penyimpangan(val kodenik:String,val namakaryawan:String, val kodebagian:String, val tglupdate:String, val tglabsen:String,
                       val jamin:String, val jamout:String)

The problem is, when I try to see the value of feed, it throws something like this :

[com.example.penyimpangan_idm.ApprovalpenyimpanganActivity$Feed@4cef17c]

My output from resp is like this :

[{"kodenik":"2013129733","namakaryawan":"YASTI RIZKIA","kodebagian":"TRIE","tglupdate":"2019-12-09","tglabsen":"2019-12-09","jamin":"10:05","jamout":""}]

Hi there, first time poster...how would I call a function (indexInc) if that function is a value in a map? Thank you

val indexInc = {if (index++ == memory.size - 1) memory.add(0u)}
val commands = mapOf(">" to indexInc, "<" to indexDec)

Hey, sorta new here, coming from Golang. I was after a replacement for

waitGroup

, build my own, shockingly bad one...

// TODO: Fix this hacky parallelism
var awaitingResponse = 0
for (v in needsResponses) {
    GlobalScope.launch {
        while (awaitingResponse >= 30) {
            delay(5)
        }
        awaitingResponse++
        // send API request, record response
        awaitingResponse--
    }
}

sleep(1000) // needed in order to not just skip before any request is sent off
while (awaitingResponse > 0) {
    sleep(5000)
}

For reference it iterates over a map in parallel, what's a better way of doing this? There's an issue currently where it sometimes proceeds before all responses are fetched/ recorded

Hello, I just implemented checkbox on my recycler view, but I think I encountered a bug, so whenever I clicked on the first index, suddenly the item on the 11th index get clicked, it also apply whenever I click on 2nd item, the 12th item also get clicked. Is this a bug ? I need some assistance, thanks. For additional info, my adapter :

class RecyclerViewAdapter(val feed: List<ApprovalpenyimpanganActivity.Penyimpangan>): RecyclerView.Adapter<CustomViewHolder>(){


    override fun getItemCount(): Int {
        return feed.count()
    }

    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): CustomViewHolder {
        val layoutinflater = LayoutInflater.from(parent?.context)
        val row = layoutinflater.inflate(R.layout.penyimpanganlayout, parent, false)
        return CustomViewHolder(row)
    }

    override fun onBindViewHolder(holder: CustomViewHolder, position: Int){
        val feed = feed.get(position)
        holder.view.textView5.text = feed.namakaryawan + " - " + feed.kodenik + "\n" +
                                        feed.jamin + " - " + feed.jamout + "\n" +
                                        "Tanggal : " + feed.tglabsen
        holder.view.checkBox.setOnClickListener{
            println(position)
            println("CLICKED")
            println(feed)
        }
    }

}

class CustomViewHolder(val view: View): RecyclerView.ViewHolder(view){

}

My data class :

data class Penyimpangan(
        @SerializedName("kodenik") val kodenik : String,
        @SerializedName("namakaryawan") val namakaryawan : String,
        @SerializedName("kodebagian") val kodebagian : String,
        @SerializedName("tglupdate") val tglupdate : String,
        @SerializedName("tglabsen") val tglabsen : String,
        @SerializedName("jamin") val jamin : String,
        @SerializedName("jamout") val jamout : String
    )

What is the difference between arrayof and IntArrayof and intArrayOf in kotlin

Supppose I have kotlin product and I want to make parts of it scriptable by users run time. Could I load strings as kotlin script runtime, pass them objects and have them do something to those objects and return another object? Neither security or performance is important, but of course nice to have.

Is there a better way to write

listOfStuff.asSequence().mapNotNull { fromStuffToSomethingOrNull(it) }.firstOrNull()

hi, who can help me with IntelliJs 'JS Client and JVM Server | Gradle' Kotlin Project? building the project and starting the jvm (netty) server is working but the static js asset can't be loaded, is there some documentation I'm missing?

in kotlin i can do something like

fun log(x: Int) { ... }

fun log(x: String) { ... }

fun log(x: Boolean) { ... }

to have log take 3 different types of values

is there any way to extend this so log() could take more than 1 parameter

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