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android

Tushar

06/19/2018, 9:47 AM

How to get location update continuously in background in android oreo?

:stackoverflow: 7

Tim Castelijns

06/19/2018, 9:51 AM

short answer: you can’t

purna

06/19/2018, 11:10 AM

I was wondering which would be better declaration of a method

suspend fun methodName(image: Bitmap?): String? = async {
   // heavy task
}.await()

fun methodName(image: Bitmap?): String? {
   //heavyTask
}

and in Code

async{
   methodName()
}.await()

❎ 1

2️⃣ 1

1️⃣ 3

aperfilyev

06/19/2018, 2:10 PM

I’ve made a thread on SO https://stackoverflow.com/questions/50930472/noclassdeffounderror-after-upgrading-kotlin-from-1-2-31-to-1-2-41-1-2-50

jtravis

06/19/2018, 6:29 PM

Is there a good sample application out there which shows best-of-breed usage of kotlin, architecture components, (butterknife? dagger?) etc.?

Ayden

06/20/2018, 9:34 AM

I see. Thank you for the explaination @gildor

Ketan

06/20/2018, 4:13 PM

Hi Guys, I am new to Kotlin. I have a question. What would be memory impact if I use object AndroidDTO { data class Request(name: String) data class Response(api: String) } Instead of two different data classes as below: data class Request(name: String) data class Response(api: String) In presenter, I am accessing Android.Request("Lollipop") and getting response. The real question is when view(Fragment) is replaced by another view(Fragment), Android object would be in memory until application gets closed or would be garbage collected when view and associate presenter references are gone.

pgreze

06/21/2018, 3:36 AM

top level methods are useful when writing Util classes. Example: https://github.com/TonnyL/Light/blob/master/light/src/main/java/io/github/tonnyl/light/Light.kt

changhyun

06/21/2018, 10:31 AM

android:layout_marginRight="@{rankingItemViewModel.marginLeftOrRight ? 0: 100}"

Anyone can teach me what is wrong??….

:stackoverflow: 2

brainail

06/21/2018, 11:28 AM

Hey everyone, I was wondering, how do you deal with the following issue: https://youtrack.jetbrains.net/issue/KT-8628 ? It’s about inline stuff and the fact that all line numbers in a stacktrace are shifted and greater than number of lines in a file. Also debugging seems like doesn’t work properly and don’t step into inline stuff easily (only if you do it manually). Did anyone meet the same issues? What is the best solution here? As an option all inline stuff should be massively tested to avoid crashes and don’t contain complex logic to avoid debugging… Thanks

juhanla

06/21/2018, 11:35 AM

So in Kotlin a == b should translate to a?.equals(b) ?: (b === null) . However comparing resources (resource == R.string.xxxx) seems to always return false even though manually stating resource.equals(R.string.xxxx) compares correctly. Why is that?

Seri

06/21/2018, 2:49 PM

Does Kotlin’s view binding work with layouts located in other modules? I’m getting the error

Unresolved reference: account_card

from the following line:

import kotlinx.android.synthetic.main.account_card.view.*

There was a similar 😒tackoverflow: question posted a few months ago, but it didn’t get any response. https://stackoverflow.com/questions/48808542/android-kotlin-kotlinx-module-level-view-binding

Ayden

06/21/2018, 3:25 PM

Hi guys. Anyone of you store your .AndroidStudio and .gradle in other drive?

changhyun

06/22/2018, 5:41 AM

android:layout_gravity="@{rankingItemViewModel.marginLeftOrRight  ? Gravity.RIGHT : Gravity.LEFT}"

Any one can tell me why its not working?

alex2069

06/25/2018, 5:25 AM

Add

@file:Module

Gta

06/25/2018, 1:02 PM

@lawlorslaw silly question. From what I know,

onSuccess

onError

and

onComplete

are exclusive on

Maybe

. Did you try to log on

onComplete

Hele

06/25/2018, 3:09 PM

kotlin.TypeCastException: null cannot be cast to non-null type android.support.v7.widget.RecyclerView

Hele

06/25/2018, 3:12 PM

I created row

Hele

06/26/2018, 6:52 PM

yeah I will definitely check them thanks

Tyler

06/26/2018, 7:01 PM

ok so I've got something weird going on and IDK how to fix it, I have an activity with a recyclerview and a navigation drawer, but when the drawer is first in the XML the recyclerview stays on top, and when the recyclerview is first in XML the you can't interact with it and the drawer works perfectly

martynas

06/27/2018, 6:39 AM

How can I exclude value from

@Parcelize

? I have a class where

Bar

is 3rd party library class.

data class Foo(
  val id : Int = 0,
  val bar : Bar? = null
)

At compile time I get

Type is not directly supported by 'Parcelize'. Annotate the parameter type with '@RawValue' if you want it to be serialized using 'writeValue()'

Bar

. That is fine by me. I’m happy to lose that value. But no combination of

@IgnoredOnParcel

and

@RawValue

did not worked for me yet - runtime error when serializing value.

Kevin Janvier Chinabalire

06/27/2018, 8:30 AM

Hey Guys ... I need help .. I have an app which was build Using Eclipse , I rewrote the app in Kotlin using Android Studio ... am having a challenge Generating a singed apk .. the alias key

No key with alias

not found

found in keystore

am using the same one i used in android studio..

:stackoverflow: 4

dalexander

06/27/2018, 5:41 PM

Probably Dagger 2? But some devs have found dependency injection is less useful on Kotlin projects, so you might consider whether you need it or not.

alex2069

06/28/2018, 2:59 AM

The

get()

results in it being created at call-time (and each time something accesses

httpLogging

). Without the

get()

it's kind of like a constant field that is initialized once when the class is constructed with each access to

httpLogging

returning that value.

alex2069

06/28/2018, 3:02 AM

You could try to compare it as well - go to the val and use "Show Kotlin Bytecode" - then hit the "Decompile to Java" button and compare the implementations

Ayden

06/28/2018, 6:19 AM

Hi guys. Recently I'm trying to create my project by using MVVM.

Ayden

06/28/2018, 6:19 AM

May I know what's the different between

model

and

repository

directory?

edwardwongtl

06/28/2018, 10:51 AM

I think the only Kotlin specific thing for android is the Kotlin-android extension, which you can read more from the official website

✔️ 1

☝️ 1

chi

06/28/2018, 6:48 PM

Converting the following to java snippet

backgroundPaint.setColor(0xffff0000);

to kotlin results in

backgroundPaint.color = -0x10000

. I wouldn't have been able to know how to get that hex color int on my own without the IDE conversion, please what is going on there so I can be able to reproduce it on my own?

eygraber

06/28/2018, 7:11 PM

Is it safe to set the kotlin compile target to 1.8 if min version is 24?