kotlinlang #android

Warning: kotlin.reflect.jvm.internal.KFunctionImpl$caller$2: can't find referenced class java.lang.reflect.Executable
Warning: kotlin.reflect.jvm.internal.KFunctionImpl$caller$2: can't find referenced class java.lang.reflect.Executable
Warning: kotlin.reflect.jvm.internal.KFunctionImpl$defaultCaller$2: can't find referenced class java.lang.reflect.Executable
Warning: kotlin.reflect.jvm.internal.KFunctionImpl$defaultCaller$2: can't find referenced class java.lang.reflect.Executable

qlitzler

06/10/2017, 11:30 AM

Hello, before filing an issue I wanted to know if anyone else is experiencing this. I’m using Android Lifecycle Architecture with kotlin, and every other compilation I get this:

java.lang.IllegalStateException: Don't know how to compile annotation value Unresolved enum entry: android/arch/lifecycle/Lifecycle$Event.ON_STOP
	at org.jetbrains.kotlin.codegen.AnnotationCodegen$2.visitUnsupportedValue(AnnotationCodegen.java:421)

marcinmoskala

06/11/2017, 12:37 PM

Hey Kotliners, we are writing book about Android Development with Kotlin for Packt, and we've decided that there needs to be app that will show how all introduced Kotlin features can work together. Points are: * It cannot be long, while it needs to described in 20-30 pages chapter. It wasn't planned previously and now we don't want to make this part to long. Also, it should not be complex and it should use only simple and standard dependencies. I decided to include RxJava, but I am using only most basic features, which are easy to explain. * It should show as much Kotlin features as possible. But they need to be used in good way (reasonable). * We want it to look good (visually). * We would like structure to be simple, but also clean, because readers might later use it as reference in their own projects. This is why we've decided to implement it in MVP. We've decided to make Marvel gallery basing on Marvel API, because it have nice pictures and everyone likes superheroes ( at least I do xD ) I placed code proposition here https://github.com/MarcinMoskala/MarvelGallery We need as much feedback as possible. And every opinion is valuable. Packt is a big publisher, and this book will get to lot's of people. For most of them it will be first contact with Kotlin. And your feedback can make it better. But please, write on priv. I don't want to spam this group.

👍 3

jasonlow

06/12/2017, 1:21 AM

Back when I was doing java, I usually would go with something like this:

class Foo {
     private Foo mShared;
     private Context context;

     public Foo sharedInstance(Context context) {
                if (mShared == null) {
                         mShared == new Foo(context)
                }
                return mShared;
     }
}

cedric

06/12/2017, 3:09 AM

@jasonlow Contexts get valid and invalid depending on where in the app you are, storing one in a global singleton will lead to crashes

thatsmoodi

06/12/2017, 1:01 PM

Any powerful kotlin json parsing library

oleksandr.samsonov

06/12/2017, 1:21 PM

Find new Job 😄

:kotlin: 21

👍 7

nkraft

06/12/2017, 1:31 PM

Clearly your CTO wants you to suffer.

oleksandr.samsonov

06/12/2017, 6:53 PM

@kokeroulis Not to flood wrote in private

mg6maciej

06/12/2017, 10:30 PM

@budioktaviyan try https://github.com/nhaarman/mockito-kotlin

szymen

06/12/2017, 10:48 PM

@budioktaviyan you may also use workaround from this post: https://stackoverflow.com/questions/30305217/is-it-possible-to-use-mockito-in-kotlin if you don't want to include library

chris.zou

06/13/2017, 6:41 AM

Hi, anyone know what the number after the “sdk” mean?

Paul Woitaschek

06/13/2017, 8:02 AM

Has someone used multiple kotlin modules successfully?

qlitzler

06/13/2017, 9:18 AM

yes i'm using 1.1.2-5. Had the same issue with 1.1.2-4

oscarg798

06/13/2017, 4:42 PM

hi guys one question which version of kotlin is the last one for android studio, this one 1.1.2-5

kingvhit

06/14/2017, 2:51 AM

Sorry for my stupid question but does anybody let me know how can import synthetic automatically ? Like :

import kotlinx.android.synthetic.main.activity_main.*

Or any shortcut do it by your hand ?

radityagumay

06/14/2017, 2:56 AM

Import ...[classname].[layoutname]

anstaendig

06/14/2017, 8:01 AM

Anyone having the same problem?

anstaendig

06/14/2017, 8:12 AM

Nevermind, I found the issue

perryprog

06/14/2017, 12:35 PM

Well, I guess I should also get the beta?

perryprog

06/14/2017, 5:06 PM

I’m trying to start a nexus simulator running Android O... I’m getting:

Emulator: Failed to open vm 2

Emulator: Failed to create HAX VM

Emulator: No accelerator found.

Emulator: failed to initialize HAX: Invalid argument

06/14/2017, 7:54 PM

doesn't seem related to kotlin

pratama

06/16/2017, 9:35 AM

kotlin ver

1.1.2-2

borisdamato

06/16/2017, 11:16 AM

I have a problem with Android Studio 3.0 C4 and the Kotlin plugin. Even if I update it to 1.1.2-5, after restarting AS, it still says it's using 1.1.2-4

jordan29.04.1197

06/16/2017, 2:09 PM

* What went wrong: Execution failed for task ‘:app:transformClassesWithJarMergingFor<FlavorName>Debug’.

com.android.build.api.transform.TransformException: java.util.zip.ZipException: duplicate entry: org/xmlpull/v1/XmlPullParser.class

HELP

06/16/2017, 3:33 PM

What makes you believe it's related to Kotlin?

krtko

06/16/2017, 7:13 PM

which really ruins my layouts

leodeleon

06/17/2017, 12:01 PM

FATAL EXCEPTION: main
Process: com.leodeleon.popmovies, PID: 6911
java.lang.NullPointerException: Attempt to invoke virtual method 'android.support.v7.widget.RecyclerView$LayoutManager android.support.v7.widget.RecyclerView.getLayoutManager()' on a null object reference
at com.leodeleon.popmovies.feature.view.MoviesFragment.onCreateView(MoviesFragment.kt:65)
at android.support.v4.app.Fragment.performCreateView(Fragment.java:2192)

radityagumay

06/17/2017, 12:03 PM

So, who has implement couroutine here? Did someone know, how to not leak an activity which has killed? As far I know, once we reference an activity to couroutine it will leak somewhere. Last but not least, I know to solve this. Just using a weak reference. I won't using it. Weak reference is last bullet. Using it isn't a best practice Indeed. Anyone have approach?

:kotlin: 2

Title

radityagumay

06/17/2017, 12:03 PM

:kotlin: 2

@jw which approach best for this? Could you give me some advice? Thanks

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