Anyone has any idea why this crash

Caused by android.os.BadParcelableException: Parcelable protocol requires subclassing from Parcelable

is happening even my data class implement

Parcelable

interface and annotate with

@Parcelizee

, Any kind of hints/context would be appreciated

How to make a

Flow

emit new value on some event(for example emitting new list when an item is added to the list

Hey I want to filter link from string in kotlin way. For example

val string = "Check out this property I found using Daft 
    
    <https://www.daft.ie>"

Output

<https://www.daft.ie>

I want to send image View image from one to another activity and set that image in image view

Hello, I have an abstract class

A

and data class

D

such that :

abstract class A {
  //other fields
  open val qty: Int?
}

data class D(
  //other fields
  override val qty: Int?
): A()

now, when I use class

D

for auto-serializing my JSON response using

gson

, I get the following error:

java.lang.IllegalArgumentException:class D declares multiple JSON fields named qty

if I’m overriding

qty

- won’t it mean that there is actually only one field called

qty

?

Hey guys; is there a different between ... CoroutineScope(SupervisorJob() + Dispatchers.IO) and ... CoroutineScope(Dispatchers.IO + SupervisorJob()) If yes, which is the correct format?

This message was deleted.

I am building an Android library, is there anyway to create an intent to start an activity the exist in the host app?

I am using Jetpack Compose, and am trying to communicate a navigation event from the view model back to the screen composable. The idea is that the user enters their username in a text field, hits "Next", and then the view model makes a call to an API to determine whether to use an internal login (in this case we navigate to a password entry screen), or use a web login (in this case we navigate to a screen hosting a WebView). My proof of concept is this:

typealias NavEventListener<T> = (T) -> Unit

class NavEventDispatcher<T> {
    var listeners = mutableListOf<NavEventListener<T>>()

    fun dispatchEvent(value: T) {
        listeners.forEach {
            it(value)
        }
    }
}

@Composable
fun <T> HandleNavEvent(dispatcher: NavEventDispatcher<T>, listener: NavEventListener<T>) {
    DisposableEffect(dispatcher) {
        dispatcher.listeners.add(listener)
        onDispose {
            dispatcher.listeners.clear()
        }
    }
}

Basically, a screen composable calls

HandleNavEvent(viewModel.dispatcher) { eventPayload -> onNavigate(...) }

, and the view model simply adds a dispatcher instance. I have this dispatcher as a second public property of the view model alongside a single state flow describing the UI state. My question is, is there a better way to do this? It seems to work for the most part, I'm new to compose and am wondering if there is anything I'm not considering here. The motivation for this is my architecture has it such that, if we just navigate by watching the UI state, then when we navigate back, you bounce right back to the second screen because the UI state for the previous screen is still one which means "navigate forward". I needed a way to reset the state, and didn't want to have a requirement that all my UI states have a "reset" method which resets only part of it. I figured separating the UI state from the navigation state was the way to go.

class MainActivity : AppCompatActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

        val rollButton: Button = findViewById(R.id.roll_button)
        rollButton.setOnClickListener { clickMe() }
    }

    private var word = listOf("Bla", "Blabla", "Yo", "Go")

    private fun clickMe() {
        val resultText: TextView = findViewById(R.id.result_text)
        val listIndex = 0
        resultText.text = word[listIndex]
        listIndex + 1
    }
}

Sorry for this stupid question, I mean to show "Bla" on first click, "Blabla" on second click and so on. but when I run the app, the screen only shows "Bla" even on second or next click. Thanks in advance

What is best and optimal way to remove all elements but not first element in kotlin mutable list ?

Is there a way to check kotlin coverage% (wrt Java) in the app?

Hey I am updating kotlinx coroutines to latest version in android. I am getting weird issue on lint check. I updated my version to 

1.5.1

 to 

1.6.0

 in my project.

Hello... I have a fun in another usecase layer which return Observable.

override fun getUpdates(): Observable<Model>

How can I handle this from the presenter layer using kotlin coroutines? I need scheduler in the presenter layer.e

Hiii team I am using Exoplayer 2.16 But when play mp4 full HD video it return an codec error. Any one please help me how to play mp4 HD video in latest exo player.

Is there some good practice to test

ViewModel.onCleared()

? It is protected, so cannot be called from tests... I cancel some coroutines jobs there and have to call it at the end of my test. I'm thinking about adding a separate method just for tests which calls

onCleared()

internally, but it seems quite ugly.

Did any of you enabled

android.nonTransitiveRClass=true

? I’m wondering what to do with include layout on xml referring a layout from another gradle module, when using databinding.

Is this the end of synthetics support? https://youtrack.jetbrains.com/issue/KT-50784

This message was deleted.

I saw a few days ago a library to construct Android UI with Kotlin, maybe a DSL. Like Anko, but newer and supported. Maybe it was from Square? I can’t find it now. Anybody here know what it might be. Thank you!

I’m trying to install build tools via

sdkmanager

on CI, but I get

sdkmanager "build-tools;30.0.3"
Warning: Dependant package with key emulator not found!                         
Warning: Unable to compute a complete list of dependencies.                     
/ #                                     ] 10% Computing updates...

anybody has a clue please?

This version (1.0.0-beta07) of the Compose Compiler requires Kotlin version 1.4.32 but you appear to be using Kotlin version 1.5.10 which is not known to be compatible. Please fix your configuration (or suppressKotlinVersionCompatibilityCheck

but don't say I didn't warn you!).

Such a message in exception gives reason to smile 🙃

Does anyone have any additional information about the Kotlin vulnerability reported in the Q4 2020 Security Bulletin? We have developed an Android app for a client, and as part of security verification need to run a OWASP dependency check, and the only thing that came back flagged that appears on our app's runtime dependencies is CVE-2020-29582. Unfortunately there is very little information on this, and the referenced issue KT-42181 is either private or unexistent.

Anyone knows how can I fill the placeholder

total

with the value for this string:

"%{total} price for the Pizza"

does anyone know of any good tutorials to send notifications based on a calendar date/time? I'm creating a reminder app and need a way to send notifications or alerts to the user for when it is time to be reminded

This message was deleted.

In my new project in bumblebee I see something like below in my top level gradle file. I usually see

com.android.application

in my module level gradle file.

plugins {
    id 'com.android.application' version '7.0.0-alpha13' apply false
}

And I don' see any dependencies block like

{
classpath('com.android.tools.build:gradle:7.0.0-alpha13')
}

Don't we need this anymore? How my new project is getting android gradle plugin?

Hi all, A question I am creating an Android project using Android Studio IDE, I get the build system configured for the new project (great). I wonder how to change the

org.gradle.api.initialization.Settings.DEFAULT_SETTINGS_FILE

It’s a final value which I understand to an extent why , however if I want the settings of the root project to use settings of a buildSrc module I write how can I change it ? I would like to set in my root settings.gradle.kts the name of the DEFAULT_SETTINGS_FILE to “buildSrc/settings.gradle.kts”. Any help appreciated 🙂 also thought on this appreciated more 🙂

What’s the best way to ensure that no one is mitm and looking at my applications network traffic outside of certificate pinning?