kotlinlang #android

Hello everybody, does someone know if there is a way to enable the coroutine debug mode on android/android studio ? (https://github.com/Kotlin/kotlinx.coroutines/blob/master/docs/debugging.md)

Nir Golan

11/12/2019, 3:47 PM

hey all have anyone worked with moshi retrofit and pairs and lived to survive?

dave08

11/13/2019, 2:07 PM

r8 is finishing with an error:

Error: Attribute Signature requires InnerClasses attribute. Check -keepattributes directive.

What could cause this?

Aiden

11/14/2019, 8:52 AM

I thought I should have to use async and await for this.

Aslam Hossin

11/14/2019, 1:36 PM

Is there any

android

opensource

library

for getting external storage image resources?

Tim

11/14/2019, 4:23 PM

is there some threshold on how many broadcasts you can send in a time period with LocalBroadcastManager

:stackoverflow: 3

Aiden

11/15/2019, 6:58 AM

How do I use MainActivity to trigger this MainViewModel to run?

Cyberpunk Keanu

11/15/2019, 10:41 AM

Hey all. I have a bottom navigation with 5 tabs But I'm using 6 Fragments. The first one is displayed by default when the activity is loaded. Then the rest 5 fragments are assigned to the 5 tabs in my bottom navigation. Now here is my ideal scenario. 1st Fragment always stays in the back stack. Then even if you keep switching between the 5 tabs, on back pressed should go to the 1st default fragment. However, idk how to do it & hence a result I now have a backstack of all the tabs that I switched in between. Anyone idea how to handle this back stack? I just want to go to the 1st Fragment on back/up press & not into a never ending backstack of tabs I switched.

Cyberpunk Keanu

11/15/2019, 12:46 PM

Anyone know how to write an inline Intent outside of an OnClickListener Lambda? I know inside the lambda, you can write like this

view.setOnClickListener { v->
    v.context.startActivity(Intent(v.context, NextClass::class.java))
}

but if I try to write it outside the lambda, I get an error saying that Intent needs a FLAG_CLEAR_NEW_TASK. But Idk where to put it? Any suggestions?

Abhishek Bansal

11/15/2019, 4:35 PM

Hey guys did anybody happen to stumble upon this? Is there a workaround that is available? It seems like Android Gradle test plugin(

com.android.test

) is broken after `AndroidX `as demonstrated in official testing blueprints. https://issuetracker.google.com/issues/129421689

mending3

11/16/2019, 3:01 PM

why is action my action bar showing the title as fragment name? for example if I'm in HomeFragment, the action bar title is HomeFragment etc

codebijan

11/16/2019, 5:25 PM

Anyone know best way to go about making a network layer in Kotlin? I have a backend REST api with several endpoints and a base URL and would like to know best practices for creating a network layer in Kotlin, much appreciated.

Sebi Sheldin Sebastian

11/17/2019, 5:17 AM

Is there a Jetpack compose channel?

Cyberpunk Keanu

11/17/2019, 3:54 PM

Can someone help me with Recyclerview layouts. What I'm trying to achieve is a Horizontal recyclerview, with a single row, & fit atleast 2 items in the total horizontal screen width. My issue, the item populating in the recyclerview take the width of the whole screen show it is only showing 1 item. If my primary condition wasn't for it to be a Horizontal scroll, I would've just used

recyclerview.layoutManager = GridLayoutManager(context, 2)

But this code by default makes the Grid layout scroll vertically. And if I add

(context, 2, GridLayoutManager.HORIZONTAL, false)

it adds 2 rows instead of 2 items in a row, but it does scroll Horizontal. Help? (P.S. It is important that the solution given scrolls the recyclerview Horizontally 🙏) Edit: A good example of what I'm trying to achieve would be this playstore's implementation of horizontal recyclerview. My items take the whole screen width unlike shrinking & thus effectively showing 2 items at once

J6ey

11/18/2019, 12:06 AM

Has any of you actually been coding on the standard close or similar to how the Sunflower app is built?

J6ey

11/18/2019, 12:08 AM

I thought kotlin was just a change in syntax but there seems to be features and practices in store

Nikola Milovic

11/18/2019, 9:05 AM

Dagger2, tests fail because lateinit not initialized

@Module(includes = [TestApplicationModuleBinds::class])
object TestApplicationModule {
    @set:Inject
    lateinit var mockQuoteDataSource : MockQuoteDataSource

class MockQuoteDataSource @Inject constructor(jsonNetworkService: JsonNetworkService) : TestQuoteRemoteDataSource(jsonNetworkService.apiService) {

I get the error

kotlin.UninitializedPropertyAccessException: lateinit property mockQuoteDataSource has not been initialized

quver

11/18/2019, 3:21 PM

Hello, guys. does anyone use/love

Android Paging Library

? Personally I think that mostly people wish to get rid of boilerplate code and get simpler solution. And now it looks kinda overhead because you need to write more that just

DiffUtil

+`LoadMorelistener`. Any thoughts about it, does it really worth it?

Paul Woitaschek

11/18/2019, 9:43 PM

Ehh what? Not verified? Why does it has to be verified?

11/19/2019, 5:02 AM

Question on Android navigation library aka single activity pattern. Is it intended to have your entire app defined by the single activity or would it actually be better to have multiple navigation for various different modules like authentication, home, may be a product list (including flows till product checkout). Has anyone used it in production app so far. Any pointers would be helpful.

:stackoverflow: 2

:google: 2

Tim

11/19/2019, 2:35 PM

does android development tend to rely more on 3rd party libraries as compared to iOS development?

dakinne

11/19/2019, 3:39 PM

fun newInstance(
            onSizeSelected: () -> Unit = {}
        ) = SizesFragment().apply {
            arguments = Bundle().apply {
                putSerializable(ON_SIZE_SELECTED, onSizeSelected )
            }
        }

Adam Powell

11/19/2019, 5:06 PM

generally speaking you can't/shouldn't.

👍 4

Abdul Samad

11/20/2019, 11:55 AM

Hello, what's the best option to store and secure your API keys ?

:google: 1

:stackoverflow: 2

Mohammed Alaa

11/20/2019, 7:01 PM

Hi guys, I was wondering if there exist something for JSON parsing that work with Retrofit in android like Codable Protocol in ios Swift that allow dynamic json parsing ,or I should create my own JSON converter for every type?

Cyberpunk Keanu

11/21/2019, 4:26 AM

Guys, which dependency injection framework is better? Dagger 2 or Koin? Now that our app is going to scale, I feel like we're going to have a need for dependency injection in it

dave08

11/21/2019, 1:09 PM

Is there some kind of coroutine scope already handled by Android Lifecycle components for Services and IntentServices?

rkeazor

11/21/2019, 1:40 PM

There is lifecycle scope, that works with lifecycle owner I believe

hikkidev

11/21/2019, 4:03 PM

Ladies and Gentlemen, whoever faced a similar problem? I am using Android Studio 4.0 Canary 4 and when using kotlinx.synthetic I get NPE

Title

hikkidev

11/21/2019, 4:03 PM

Ladies and Gentlemen, whoever faced a similar problem? I am using Android Studio 4.0 Canary 4 and when using kotlinx.synthetic I get NPE

Luca Nicoletti

11/21/2019, 4:03 PM

You sure you’ve included the right file?

kotlinx.synthetic

can point to the wrong file if the same id is used in several

xml

files

hikkidev

11/21/2019, 4:07 PM

@Luca Nicoletti yes

this is - ok

Got NPE, button_save is null

On Android studio 3.5.2 everything works as it should...🤔

Sebi Sheldin Sebastian

11/21/2019, 4:29 PM

What's your gradle version and the kotlin version? Kotlin EAP might be screwing things up a little

I just checked on the latest Canary build with Kotlin 1.3.60 and gradle 4.0.0-alpha04 and all my view holder synthetics are working fine, the only difference from yours is I'm not using Moxy

hikkidev

11/21/2019, 5:04 PM

I found a problem.

gradle-wrapper.properties: distributionUrl=******/*gradle-6.0-rc*-*.zip It is necessary to use the stable version =) On gradle-6.0-all.zip - everything is ok

Zach Klippenstein (he/him) [MOD]

11/21/2019, 7:26 PM

Something to keep in mind for the future, there are also women in this slack, not just gentlemen 😉

itnoles

11/21/2019, 11:46 PM

I am suprising you are not using Jetpack Compose on AS 4.0

hikkidev

11/22/2019, 6:04 AM

@itnoles While exploring Jetpack Compose)

@Zach Klippenstein (he/him) [MOD] Yes you are absolutely right 😅

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