or just the ones that will be different than the variable name?

anybody got experience using Kotlin + JNI on Android? Does it work nicely, or is it smarter to just use plain old Java for those parts of the app?

i tried to use databinding to do some late binding of some data to an GoogleMap infowindow. but that doesn’t look like it will work. Is there any other work around to update an infowindow after it is showing?

Anyone know a good and complete resource about Dagger 2? i want to inject various thing, like context or retrofit interface in my view module and other stuff like that

I will test today

Is there a way to create a ErrorAPI class to handle the error response?

{
  "error": {
    "name": [
      "The name field is required."
    ],
    "email": [
      "The email field is required."
    ],
    "password": [
      "The password field is required."
    ]
  }
}

{
  "status": false,
  "message": "Duplicate entry '@gmail.com' for key 'users_email_unique'"
}

{
  "status": false,
  "message": {
    "code": "1048",
    "message": "Something goes wrong."
  }
}

Should statemachines throw or noop in invalid cases?

Does anyone came across issue of logging exceptions? Crashes are omitted from LogCat, but shown in Fabric.

private fun processSelectedImages(selectedImages: LinkedHashMap<String, Image>) {
        assertMainThread()

        fun fillAdIds(
            index: Int,
            map: LinkedHashMap<String, Image>
        ) = map.values.map { image -> image.copy(adId = tempAdIds[index]!!) }

        val imagesWithAdId = listsOfImages
            .mapIndexed(::fillAdIds)
            .flatMap { it }
            .map { it.copy() }

NPE happens in internal function

fillAdIds

Yeah I think that might be helpful, I would appreciate that thank you 🙂

I actually don't fully understand yet, which parts of Kotlin and the Android Studio plugin are closed source?

If you could choose only one book to buy in this list which one would it be https://kotlinlang.org/docs/books.html

So I'm using Google Maps in my Android app for a country picker but I keep getting this error:

Java.lang.IndexOutOfBoundsException: Index: 0, Size: 0

How can I prevent this kind of error? I think the problem comes from here:

val address = geocoder.getFromLocation(it.latitude, it.longitude, 1)
val country = address[0].countryCode.toLowerCase()

Android Paging library is really good. I just published "Android Paging for Network Uncovered!" https://medium.com/@chet.deva/android-paging-for-network-uncovered-b9cb85ca637b

I am using kotlin with dagger and databindings on android. When I cleaned my

.gradle

folder in my project today I started getting compilation errors: https://gist.github.com/audax/54fffa916c420af70881ad891d3fc5f8 I am using kotlin 1.51 (but also tested 1.40 and 1.50) and the android gradle plugin 3.1.3. Anyone got an idea of why that is crashing?

The best way would be to pass a function from the layout parent and in the layout of button i write “onClick=“@{onClickGenericMethod}“, but if i want to pass paramater this implementation not work

Hi, how can I use an abstract class in databinding (3.2.0-beta02), it gives me a

Could not find accessor companyName

when using

android:text="@{data.invoice.companyName}"

(kotlin v1.2.51) with

abstract var companyName: String?

. In the kotlin bytecode I see a

getCompanyName()

method but that doesn’t work either

When an Activity is destroyed and recreated, are all of it's associated Fragments also destroyed and recreated automatically? I am somehow ending up with 2 instances of a Fragment being initialized and not exactly sure how.

how do i set up a smoother transition without any flicker and also with activity B sliding on top of activity A

Is the new motion editor available in the canary? EDIT: Already googled and checked SO. Haven't seen anything else mentioned since it's relatively hard to find info on it

I'm working on a Kotlin talk for an upcoming conference. I wanted to gather some feedback from the community. If you/your team has been using Kotlin for Android dev, what noticeable improvements have you seen in your every day Android development life? (In terms of productivity/efficiency). Or have you seen any drawbacks? I'd love to hear your views. Thank you! 🙏🏼

Hello, I am native android developer and student in university, currently managed to get a mid developer job in local company. I really enjoy Android development, especially using most popular and advanced technologies: RxJava, Android Architecture Components, Dagger2, Retrofit. I even become almost complete Kotlin developer(use Java sometimes) I spend a lot of time learning all that, and now it seems it is all for nothing... Our company has started to use ReactNative, other companies also move to cross platform or even PWAs. Earlier it did not make sense to me, but now I see that cross platform apps are better choice. I even bet that within 2 years Hybrid apps or PWAs are going to become even more popular and take over. It all happens because devices become much faster and can handle all functions, being just web apps instead of native. Can someone share their experience? I believe it is good for young people to know about better and more used alternatives , instead of wasting time in Android native development, because skills are not transferable to web at all! Also, why people are not using Kotlin for IOS? That would solve issue! Learn Kotlin and use it for IOS too

Hi, did anyone successfully migrate to AndroidX (which is now in beta)? Did you observe any build time impact (positive or negative) with jetifier enabled for compat with third-party libs relying on pre-AndroidX support libraries?

Can anyone who's done networking with bluetooth check out this question? https://stackoverflow.com/questions/51110026/bluetooth-cant-find-custom-service-uuid-in-sdp-query I've been waiting for just over a week to get this one bit of my app working the way I want, and I haven't gotten any answer

It’s a good idea to bind the entire viewModel class to a view instead specifics properties? In some cases not all property and methods of the viewModel are used by the view

Hey all. I am trying to see what Kotlin is about and since I come from java one thing that I see is the way Nulls are handled. Of course, the habit for having null default values and != null check is strong on my end and the first step would be to better understand how to program without having the nulls in mind. So for starters, having a class

class Person(val firstName: String, val lastName: String, var age: Int)

and avoiding null means that whenever I instantiate it, I need to pass default values? So maybe have firstName="", lastName="" and age=0?

Maybe a bit out of case, but I see mostly naming convention like

UserListFragment

,

UserDetailsFragment

,

UserListAdapter

,

UserListViewModel

. Now if I have all these open in Android studio I find it a lot harder to find which one is adapter, which is ModelView. Why not go with

FragmentUserList

,

AdapterUserList

,

ViewModelUserList

?

I have a class like class

someClass(val id : String, val imageResourceId: Int)

. Basically I want to set the drawable id as the source of the image resource to show in the app. However, resIds may change upon adding new resources so I end up with a database which hosts wrong ids. One way I can think of is adding the icons in the

assets

folder and user Glide to load from there. Any other thoughts?

I haven't tried it but I imagine you should be able to. Higher order functions are first class citizens, after all. Have you tried anything yet?