And also anyone know a good a library to generate a report in PDF ?

Can your non-null fields in `Fragments`/`Activity` ever have null values? Like when a fragment has been removed or an activity has been finished. I end up having stuff nullable, because even tho I can guarantee that an object has been initialised as part of the lifecycle, I'm unclear what happens when the fragment/activity is destroyed in terms of the instance of the class itself. Any reading material and opinions would be great

is there a good resource for android that uses the visual editor instead of just XML? also there seems to be a lot of tutorials out there tat still use the findID stuff that you dont have to worry about anymore in Kotlin

Hey, I distinctly remember a new feature for android being released where we can prompt the user to update to the latest version of our app. Does anyone know what this is called? I can't seem to find any information about it

@spierce7 https://www.androidpolice.com/2018/11/07/app-updates-api-will-let-android-apps-update-use/

Can you find me a Android TextView specific slack channel then?

Hi I have something like this where my RecyclerViewHolder delegates the creation of the layout to this adapter, is there a way where I can use

LayoutContainer

here in order get cached synthetic views? I Can't find a way to work 😕 LayoutContainer requires the

containerView

initialized at the class initialization but there's no way I can get it on the delegate initialization, only on the

bindView

class HeadlineDelegateAdapter @Inject constructor() : BaseDelegateAdapter {

    override fun getLayoutRes(): Int = R.layout.item_dashboard_transaction_headline
    override fun bindView(itemView: View, item: BaseViewType, viewHolder: RecyclerView.ViewHolder) {
        if (item is Headline) {
            tvHeadline.text = item.description
            tvSubtotal.text = item.subtotal
        }
    }
}

It's a field of ViewHolder and you return that.

Who will change that? @alan

using kotlin android extensions with two different layout xmls for the same custom class, where the two layouts use the same ids for views that are different but share a common base class (something like

Button

and

TextView

), is there a built-in way to tell KAE to cast views to a specific base class when reading from its cache? for now i’m stepping out of KAE and just using

findViewById<Base>(R.id.whatever).property = blah

. i saw some discussion of customizing the cache but haven’t figured out where the code for that is.

it's still there: https://android.googlesource.com/platform/frameworks/support/+/androidx-master-dev/core/ktx/src/main/java/androidx/core/widget/TextView.kt#56

I can definitely understand that rationale for breaking up RxAndroid. The issue I've encountered is that when the question is wrap it myself or use a library for an individual feature, like a location wrapper, I almost always just wrap it myself to avoid bringing in another library. But that ends up being a non trivial amount of time wrapping individual components. Of course, that's ultimately on me and I could just adjust my mindset and be more liberal about including libraries. Still, I do see value in a broader library focused on rx-ifying common android flows.

any one knows why android extensions are still experimental? it means that api can be changed or current implementation is not stable (or both)? specifically I’m interested in parcelable generation using

@Parcelize

Hello everyone, I have a composite view (TextView + EditText), I want reuse “inputType” in my both view, but there was an error, how can I fix it? thanks for help.

Yes byte code generated have subtle bug most are fixed in AGP 3.3 RC1 but there's still at least one big that can trigger random bugs on Android 8 / 9

Heya everyone! 👋 I’m a noob to kotlin and had this question. I’m trying to build a retrofit service class in kotlin and saw two approaches and not sure which one is better. 1. In the

RetrofitApi.kt

interface, define a companion object which returns a service object. 2. Define a separate class and instantiate the object in

init {}

. Is there a recommended way of doing things on android and what are the pros and cons of each approach? Thanks!

hello, I have a question which java bytecode does kotlin compiler targets per default? java 6? does it make the compiler faster if I say I target java 8? with

compileKotlin {
    kotlinOptions {
        jvmTarget = "1.8"
    }
}

our android app supports min android SDK 21

Has anyone tried inline classes with Mockito and encountered this issue https://github.com/nhaarman/mockito-kotlin/issues/309? Any workaround so far?

Hello,please help.AS 3.2.1,Kotlin,Gradle 5.0.I'm writing a mistake. How do I fix it? Thank you Cause: org.jetbrains.plugins.gradle.tooling.util.ModuleComponentIdentifierImpl.getModuleIdentifier()Lorg/gradle/api/artifacts/ModuleIdentifier;

Hello,please help.AS 3.2.1,Kotlin,Gradle 5.0.I'm writing a mistake. How do I fix it ? Thanks https://hastebin.com/irobokatax.nginx https://hastebin.com/lerifoluqu.http

can't use data binding in kotlin Unresolved reference: databinding . Is any solution for this ?

Hi :) how to template pdf file on write text(dynmic)

can i ask something about firebase in here?

i got some problem about fcm

I really wish the Android community had an official Slack as well

Hello,please help.AS 3.4.Canary 6,Kotlin,Gradle 5.0.I'm writing a mistake.How can I fix it? Thanks Gradle sync failed: tried to access method kotlin.collections.ArraysKt___ArraysKt.copyOfRange([Ljava/lang/Object;II)[Ljava/lang/Object; from class kotlin.reflect.jvm.internal.calls.CallerImpl$Method$Instance (20 s 816 ms)

Hello ! I'm using retrofit to get some data from a website. What is the best practice to return data from a call

onResponse

? Should I: * pass a callback and send the data back through it? * use the https://github.com/gildor/kotlin-coroutines-retrofit library? * pass a LiveData as parameter to the

call

function and post the value to it?

My view hierarchy is roughly (activity -> frame layout -> (fragment -> drawer layout [fits system windows] -> nav drawer [fits system windows] + frame layout [fits system windows] -> (coordinator layout and all that jazz)))

1) Implement getter with logic

Hello,please help.AS 3.4. Canary 6,Kotlin,Gradle 5.0.I'm writing a bugs.The application can not run. The error occurred after the transition to AS 3.4. I use Java 11. I tried JAVU 8 without change. How do I fix it? Thank you