kotlinlang #android

this might seem like a silly question, but does anyone know if, using Android Studio (or plain old Gradle) I can isolate Kotlin warnings? the context here is we have an extremely large project with many warnings from both Kotlin and Java, and I’d like to isolate the Kotlin-only warnings. I know I could do this by writing a script to grep only *.kt files, but I figured there might be something built in I can use to do this

hfhbd

06/18/2022, 8:15 AM

Is this behavior expected? I would expect printing

1.8

instead.

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plugins {
    kotlin("android") version "1.7.0"
    id("com.android.application") version "7.2.1"
}

android {
    kotlinOptions {
        jvmTarget = "1.8"
    }
}

tasks {
    withType<org.jetbrains.kotlin.gradle.tasks.KotlinCompile> {
        println(kotlinOptions.jvmTarget) // prints null
    }
}

yousef shaaban

06/18/2022, 3:21 PM

is there way write transient
final
int

m = 50;

i want to map this line at kotlin Not use

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companion object

Rahul Gill

06/19/2022, 3:10 AM

How to keep data stores values in memory for use. Currently I'm having data store values as StateFlow in GlobalScope and then using the values for the api by providing them in lambda

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ktoClient(someHeaderValue: ()->String)= HttpClient{
  ...
  defaultConfig{
    header("headerKey", someHeaderValue())
  }
}

Tin Tran

06/20/2022, 2:41 AM

Hi. I’m seeing this crash popping up a lot in my crashlytic board. Does anyone having the same issue? Crash happened mostly in background state

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Fatal Exception: java.lang.IllegalStateException: Not implemented
       at androidx.work.CoroutineWorker.getForegroundInfo$suspendImpl(CoroutineWorker.java:100)
       at androidx.work.CoroutineWorker.getForegroundInfo(CoroutineWorker.java:6)
       at androidx.work.CoroutineWorker$getForegroundInfoAsync$1.invokeSuspend(CoroutineWorker.kt:134)
       at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:33)
       at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:106)
       at kotlinx.coroutines.scheduling.CoroutineScheduler.runSafely(CoroutineScheduler.java:571)
       at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.executeTask(CoroutineScheduler.kt:750)
       at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.runWorker(CoroutineScheduler.kt:678)
       at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.run(CoroutineScheduler.kt:665)

My work manager dependency is

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implementation 'androidx.hilt:hilt-work:1.0.0'
    kapt 'androidx.hilt:hilt-compiler:1.0.0'
    implementation "androidx.work:work-runtime-ktx:2.7.1"

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Tim Malseed

06/20/2022, 4:32 AM

Hey friends. We’re looking at hooking into the instrumented tests on Android, to receive realtime progress. We’re able to do this with regular unit tests by attaching a Gradle TestListener. However, instrumented tests don’t use the same Gradle APIs. I’m wondering how Android Studio is able to get realtime test results when running the

connectedDebugAndroidTest

task? We can attach a custom Junit

RunListener

via gradle

testInstrumentationRunnerArguments

- but this passes progress back to the app’s process itself, rather than our local machine.

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Elnur Jeksenov

06/20/2022, 8:53 AM

Hi guys! I want to disable screen recording in my app(screen capture allowed). As I researched on the internet there is only one solution:

window.setFlags(WindowManager.LayoutParams.FLAG_SECURE, WindowManager.LayoutParams.FLAG_SECURE)

is there any other solution?

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Tim Malseed

06/20/2022, 1:30 PM

Are the 'not Kotlin' emojis really necessary? I'm happy to help answer questions loosely related to Android dev in this channel, whether they directly involve Kotlin or not. Surely I'm not the only one? We have an amazing wealth of knowledge here, and it seems a shame to turn questions away just because they don't strictly relate to the language. It seems to me that there's no harm in asking..

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kotlinforandroid

06/21/2022, 11:50 AM

I want to periodically read the value of the stepcounter sensor using a

androidx.work.Worker

. However, reading the value requires me to register a callback. How do I make my worker wait for the callback to return once without using a busy-loop? Is there a builtin way?

JobService

has a dedicated

finishJob

method that one could call from the callback.

androidx.work

seems to not have this

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class MyWorker(sm: SensorManager, sensor: Sensor, context: Context, params: WorkerParameter): Worker(context, params) {
    private flag: Boolean = false

    override fun doWork(): Result {
        sm.registerListener(object : SensorEventListener {
            override fun onSensorEvent(e: SensorEvent) {
                flag = true
                // use value...
            }
        }, sensor, TIMEFRAME_FASTEST)
        
        while (!flag) {  }
        return Result.success()
    }
}

😶 1

samp

06/21/2022, 9:14 PM

Cross posting this question: https://kotlinlang.slack.com/archives/C09222272/p1655845993785259 My problem is related to this stackoverflow question : https://stackoverflow.com/questions/63478955/refactor-my-java-code-to-replace-attribute-access-to-getters-and-setters

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Satyam G

06/22/2022, 2:08 PM

Hello, I am using the In-App Update feature in Android (Immediate Update). We already have a method of

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appUpdateManager.startUpdateFlowForResult(
    info,
    AppUpdateType.IMMEDIATE,
    parentActivity,
    MY_REQUEST_CODE
)

Which triggers the Immediate flow. If you observe here we are passing here the MY_REQUEST_CODE while triggering Update. Once the update is Finished, Cancel we get the callback in OnActivityResult based on that we can take decisions. But we already know onActivityResult is deprecated now and it is recommended to use the Activity Result Api which has a code like

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var resultLauncher =
    registerForActivityResult(ActivityResultContracts.StartActivityForResult()) { result ->
        if (result.resultCode == Activity.RESULT_OK) {
            // There are no request codes
            val data: Intent? = result.data
            inAppUpdate?.let {
                inAppUpdate?.onActivityResult(result.resultCode, data)
            }
        } else if (result.resultCode == AppCompatActivity.RESULT_CANCELED) {
            finish()
        }
    }

But How to get the request code in this case ??? Can anyone help here ?

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👋 1

Sven Obser

06/23/2022, 3:09 PM

Hi everyone, I just realized that

kotlin.random.Random

produces the same “random” values with each app start on Android. 😨 Is this expected behavior?

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Log.e { "java.util.Random().nextInt(): ${java.util.Random().nextInt()}" }
Log.e { "kotlin.random.Random.nextInt(): ${kotlin.random.Random.nextInt()}" }

Output:

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java.util.Random().nextInt(): -1853486751
kotlin.random.Random.nextInt(): -351317653

java.util.Random().nextInt(): 1794921748
kotlin.random.Random.nextInt(): -351317653

java.util.Random().nextInt(): 1849140367
kotlin.random.Random.nextInt(): -351317653

Vivek Modi

06/24/2022, 9:06 AM

Hey guys, I have one string in which I want to split into list from there where I should provide character. I'll explain in details For example 1

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val string = "Birth Control"
    
    val searchText = "n"

Output

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["Birth Co", "trol"]

For example 2

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val string = "Bladder Infection"

    val searchText = "i"

Actual Output

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["Bladder ", "nfect", "on"]

Expect Output

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["Bladder ", "nfection"]

I tried some code but example 1
is working fine but example 2
is not because I only want to split first occurrence.

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val splitList = title?.split(searchText, ignoreCase = true)?.toMutableList()
    splitList?.remove(searchText)

Can someone guide me how to solve this idiomatic way. Thanks

Nurbanu Kahraman

06/24/2022, 10:51 AM

How to stop of android cracked apks?

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davidbritish

06/24/2022, 9:34 PM

Does anybody know of any documentation detailing kotlin components' Min Api? Especially now with kotlin 1.7's removal of the jvmTarget 1.6 option? Seems like existing documentation is only on Kotlin on Android's FAQ page last updated on 2020, and a Stackoverflow post from 2017.

rkeazor

06/25/2022, 2:20 AM

For those who have Data Classes in public apis. How do you handle Binary and Source Compatibility issues

AmrJyniat

06/25/2022, 5:01 AM

How to reflect a flow value when it gets ready after collecting?

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var property: String? = null
.......

propertyFlow.collect{
    property = it
}

.......

textView.text = property // reflect this value when its get ready

Something like that, any idea?

brookmg

06/25/2022, 9:18 AM

Hey guys, this might be a weird question but is there a way to start a tagged co-routine? To be able to cancel batch of them if a parameter is changed. Is dedicated a job for related tasks the only way to do this?

Hannan Shaikh

06/26/2022, 12:34 PM

Hi there, I want to setup Custom Navigation drawer using navigation components, can anyone help me

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dazza5000

06/27/2022, 6:22 PM

has anyone implemented app idle timeout using kotlin and have an implementation strategy they want to share/highlight?

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K 1

Colton Idle

06/28/2022, 2:21 AM

I need to make an api call (suspend function since I use retrofit) in my FirebaseMessagingService. What's the proper way to make a suspend call in an Android service? Does this comment still hold true in 2022? https://stackoverflow.com/a/63407811

Mahesh Kavathiya

06/28/2022, 5:32 AM

Hi Everyone, is it possible to change build flavour run time? I wanted to use common build for all environment and select flavour from menu, based on selection data will be updated which is available on each flavours like strings, drawable etc. Currently we are maintaining separate builds for DEV/SIT/UAT, but want to keep single build and QA can select flavours based on their requirement for testing. Any thought process on this? Thanks

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Ali

06/29/2022, 11:43 AM

What is the efficient way to modify a list in kotlin? for ex. From this list

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mutableListOf(listOf(1,2,3,4,5), listOf(6,7,8,9,10))

I need this modified result but keeping original list as it is.

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[[1,2], [6,7,8,9,10]]

Aldup

06/29/2022, 11:37 PM

Hello guys I want to push a local notification at a scheduled time eg: everyday at 09:00pm, defined by the user. Either with WorkManager or AlarmManager. Any advice ? Ps: I'm using jetpack compose.

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Michael Bichlmeier

06/30/2022, 8:28 AM

Hey guys, is someone of you using the play console managed publishing? I have a question about that and hope you can help me

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android dance 1

K 1

Rohan Maity

06/30/2022, 9:53 AM

Does Navigation Kotlin DSL (not compose) support actions?

Mjahangiry75

06/30/2022, 11:02 AM

Is it a bad practice to have a same model for both

retrofit

and

room?

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Katarzyna

06/30/2022, 11:26 AM

Recently, Mustafa wrote a rule-based validation structure for all my inputs. It’s very flexible and manageable. Today he will try to explain the validator library. Read the article written by Mustafa Yigit. 👇 validator | Rule Based Validation Library in Android | by Mustafa Yiğit | Jun, 2022 | Kt. Academy (kotlin-academy.com )

AmrJyniat

06/30/2022, 1:18 PM

How to recollect

SharedFlow

when the first collect got exception? like I expose a

Flow

from repo to VM then convert it to

SharedFlow

shareIn()

then collect this SharedFlow from the fragment, now I got an exception while collecting the SharedFlow, so how to retry/recollect it again?

Pradheep Kumar V

06/30/2022, 3:58 PM

When I change the display size in settings, webview in my app gets affected. Is there anyway to force the default display density on webview?

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