kotlinlang #android

fun searchParent(id: String): Module?
	{
		modules.forEach { module ->
			val ret = searchParent(module, id)

			if (ret != null)
			{
				return@searchParent ret
			}
		}

		return null
	}

kevinmost

07/24/2017, 3:39 PM

Bundles only support

ArrayList

. I made a set of extensions for this:

fun Bundle.putParcelableList(key: String, value: List<Parcelable>) = putParcelableArrayList(key, value.asArrayList())

fun Bundle.putStringList(key: String, value: List<String>) = putStringArrayList(key, value.asArrayList())

internal fun <T> List<T>.asArrayList() = (this as? ArrayList) ?: ArrayList(this)

uhe

07/24/2017, 3:43 PM

@scruffyfox It's also worth checking out lazy `Sequence`s and the various transformation operations like

map

flatMap

etc I often find these easier to process than "oldschool" java loops. Just to give you an idea (completely untested and may not meet your needs):

fun searchParent(id: String): Module? =
        modules
                .asSequence()
                .mapNotNull { searchParent(it, id) }
                .firstOrNull()

fun searchParent(root: Module, id: String): Module? =
        root.steps
                ?.asSequence()
                ?.flatMap { it.steps?.asSequence() ?: emptySequence() }
                ?.firstOrNull { it.id == id }

mikejauregui

07/24/2017, 9:41 PM

Hi everyone I hope you guys are have a great day. My name is Mike, I'm from Mexico and I am new here, I would love to learn kotlin and I found this group, I was wondering if any of you could recommend a good course that I could take in order to start with kotlin, thanks in advance!

kingsley

07/25/2017, 12:52 PM

@juliocbcotta https://medium.com/@workingkills/pushing-the-limits-of-kotlin-annotation-processing-8611027b6711

khoatd191

07/25/2017, 2:23 PM

Could any help me take a look on this issue, pls?

Error:Execution failed for task ':app:kaptDebugKotlin'.
> Internal compiler error. See log for more details

I’m using AS 3.0, dagger 2.11

joachim.reiss.

07/25/2017, 3:24 PM

does anyone know what to add to the proguard rules in order to use the google places API when proguard is active ? https://stackoverflow.com/a/19706824/883083 doesn’t work for me . So I figured it might be because of kotlin ?

artem_zin

07/26/2017, 6:07 AM

Yep, build time is definitely a problem for big mixed java/kotlin projects. If you have ssh access to some powerful machine you can use https://github.com/gojuno/mainframer to build it remotely but work in IDE locally, this will allow you to use laptop during the build and build should be noticeably faster

👍 2

rockerhieu

07/26/2017, 7:42 AM

After running the command with

--debug

I found that gradle will try to find the dependencies in all repositories. In my project dependencies are scattered in 9 repositories. Gradle spends most of the time looking for most of the dependencies in the irrelevant repositories. Is there a best practice for this?

oday

07/26/2017, 12:02 PM

here it is https://github.com/Odaym/Kleverbot

ishanarya

07/26/2017, 7:14 PM

How should I get into Android?

bryan

07/26/2017, 9:29 PM

Have all of the issues with the Android gradle wrapper been fixed with Kotlin since Google’s adopting Kotlin?

vmalikov

07/27/2017, 4:11 AM

Why do you have create twice new instance of LinearLayoutManager? (http://prntscr.com/g0t5td) Maybe you should use just 1?

oday

07/27/2017, 8:44 AM

I’m not sure about the syntax of line 5, it is of type MvpView? then what is the

martynas

07/27/2017, 8:46 AM

Maybe someone else had same problem as me. I’m using Kotlin 1.1.3, AS 2.2.3, with latest stable KT plugin. When trying to use

takeIf

takeUnless

or any other function marked

@SinceKotlin("1.1")

I get message

Unresolved reference: takeIf

. Although building project works without any problems. Tried: - Reinstall plugin - Invalidate Caches / Restart - Use AS 3.0 Alpha 8 (same issue) - Use 1.1.4 eap KT plugin Not really sure what to do next?

rednifre

07/27/2017, 9:46 PM

When doing dependency injection on Android, is Dagger still the best choice or should I look for something Kotlin-specific?

kagomez

07/27/2017, 10:03 PM

does any of you get this error with

1.1.3-2

kotlin version

Error:(24, 0) Declaring custom 'clean' task when using the standard Gradle lifecycle plugins is not allowed.

kagomez

07/27/2017, 10:06 PM

I know it can be solved by deleting the

task clean

from my gradle but any idea of why this happens?

seriabov

07/28/2017, 10:40 AM

> to eliminate findViewById calls

Aren’t Kotlin Android Extensions good for this job?

Paul Woitaschek

07/28/2017, 10:46 AM

I found that complicated with multiple layouts and stuff like dialog fragments

👍 2

07/29/2017, 8:18 PM

And even then, just use ProGuard which optimizes them into ints

ahmed.yousef

07/30/2017, 1:24 PM

How can I start in Kotlin ?

Paul Woitaschek

07/30/2017, 3:27 PM

Am I the only one who has to rebuild the whole project each time a build fails?

👍 1

blakelee

07/30/2017, 9:59 PM

Is there a way to get dpi independent widths?

rkeazor

08/01/2017, 11:17 AM

Hey guys, if there are any Android devs who are looking for work at a awesome company , with good pay and compensation. Slack Me

nankai

08/02/2017, 2:36 AM

hey guys kotlin calls java with any technique?

subhash_pandey

08/02/2017, 7:23 AM

am getting redirect issue on volley can any one help me?

uhe

08/02/2017, 9:09 AM

you have to set your language level to 1.1 in the IDE settings for the kotlin compiler