does anybody know about an annotation library to generate manifest directly from activity classes etc?

I'm trying to start a service, but I'm having problems during init

class MyService : Service() {
    val myIntent = Intent(this, MyActivity::class.java)
    /* Other stuff */
}

This causes an NPE on

Context.getPackageName()

on the line where I'm making the Intent.

Hi. If I were to create a library-only project to form an SDK. Would it make sense to use Kotlin? Or is it more wise to go with a Java-Only SDK so it easier for people to integrate?

I guess you need to configure multidex properly https://developer.android.com/studio/build/multidex.html#keep

I'm using 1.1.2-3

I updated AS to canary 3, and tried to use

1.1.2-4

on my project. I get kapt3 compilation errors related to databinding. Reverting to

1.1.2-2

again resolves it. Does anybody here have the same problem?

Hi guys, I have a question to use AsyncTask in Kotlin. I want to post a data to server and I created a class which override AsyncTask.

open class PostTask() : AsyncTask<String, Void, Void>() {
        override fun doInBackground(vararg params: String?): Void {
            NetworkModule().getRetrofitClient(URL_TEST).create(PostService::class.java)
                    .postData(params[0])
    }
}

Android studio shows [TYPE_MISMATCH] error for

params[0]

, and if I change

String?

to

String

, the parameter’s type of doInBackground, [NO_RETURN_IN_FUNCTION_WITH_BLOCK_BODY] error is happened. 1. How to compare type

Type?

and

Type

? 2. How to write return statement, if return type was

Void

?

What is equivalent of recyclerview.addOnTouchListener in kotlin. I tried, but couldn't figure it out

no, i updated with the full code: https://gist.github.com/funrep/1ab655a69058f993d2237f8dfe64bf61

It's always transient though

Anyone has similar issue launching unit tests with gradle after build tools update to

3.0.0-alpha3

? It worked fine with stable

2.3.2

.

Execution failed for task ':app:testDebugUnitTest'.
> java.lang.NullPointerException (no error message)
   at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:100)
   at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.execute(ExecuteActionsTaskExecuter.java:70)
   ...

I'm not finding how to interact with values in the activity in a fragment. Is there something special that needs to be done with kotlin?

Does this means Java will slowly be moved out completely as language for developing Android ?

You will allocate much more garbage. Better use kotlinx.

still dont know its related to rx or kotlin

@bachhuberdesign would you move the

isPermissionGranted(activity)

out of the presenter?

I use this library usually for permission https://github.com/tbruyelle/RxPermissions And please notice that you can get the memory leaks So, my recommendation is to use Android Architecture Components instead of MVP https://medium.com/proandroiddev/android-architecture-components-cb1ea88d3835

Hey, Do you know any ways to optimize RecyclerView inside NestedScrollView ? When hasFixedSize is set to false, and there are a lot of items in recycler view, adding next items (i.e next page fetched from api ) causes UI glitches. I have disabled animations and there is only slightly diffrence.

Hi, does anyone know how to count methods in a kotlin android library or in an aar?

They have a Kotlin example up on their Github, it's kinda small but might help. https://github.com/realm/realm-java/tree/master/examples/kotlinExample

does anyone know how to declare a variable in kotlin globally ?? 😅

Thanks for sharing @harrytylenol ! I'm glad you like it! 🙌

why not a factory method to return null when necessary instead?

But it doesn't sound like Kotlin question

I love kotlin, but it still has a ways to go

It's not react yet lol

Hi Everyone, we would be having our first android summit here in Manila, PH, and one of the topics we want to include in the program is developing android apps with kotlin. It would be a pleasure if you guys can recommend someone in this group to be the speaker 🙂

is there anything additional to install in Android Studio for Kotlin lint checks? Or is everything supposed to work out of the box (with the Kotlin plugin of course)?

you're using guava, right? I found a SO post that said updating the library dependency fixed the problem, or there is a conflict between guava versions in your dependencies. you can try excluding the guava classpath in the other dependencies and keep the one you want.