kotlinlang #compose

"title": {
					"text": "{0} shared a feeling",
					"actions": [
						{
							"text": "Sara+021122",
							"action": "test1",
							"id": "9f714870-1c79-4398-ab0e-0b699d39606f"
						}
					],
					"badgeName": "mood-level-4"
}

and now i need to construct from this : “Sara+021122 shared a feeling” where Sara+021122 is clickable part of text. More in 🧵

andrew

11/05/2022, 12:04 AM

There was a pattern I saw someone post on twitter using composable fns with invokable enums a while back, I think they extended it to use sealed interfaces and such which was pretty cool. Does anyone still know where I can find it to reference it?

ste

11/05/2022, 7:16 AM

When

detectVerticalDragGestures

and

detectHorizontalDragGestures

overlap (i.e. they belong to different composables, but share the same touch source), how I can dispatch events to

detectHorizontalDragGestures

only when the drag is very horizontal? When scrolling with our thumb, vertical swipes tend to be detected as horizontal ones (images in thread)

PHondogo

11/05/2022, 6:34 PM

Hello! Who can point to any library for vizualizing graph data with 2 dimension scrolling?

nlindberg

11/05/2022, 10:54 PM

Whats the best way to convert composables into bitmaps? Want to create custom bitmaps to add as map markers that include some text and layout depending on data. I know how to do it the “non-compose” way, but would like all my UI code to be compose.

yogaboy

11/06/2022, 3:12 PM

M3 Alert - M3 says - we use tonal enhancement for elevation. I know how to achieve automatic elevation of the TopAppBar when scrolling. But the question is: How to achieve the connection of the TopAppBar elevation with the StatusBar? I use the accompanist library to change the color of the appBar. it has to be done somehow. 🤔 Because that’s how Gmail works. When scrolling, the tonal elevation of the appBar changes along with the TopAppBar. 1. TopAppBar Gmail with scroll position …. 2. My App with No scroll position 3. My App after scrolled

andrew

11/07/2022, 3:38 AM

🧵 Is there any reason why the invoke operator in a sealed interface with inheritance doesn’t work?

Hasan Nagizade

11/07/2022, 4:28 AM

if when composable recomposes everything gets recreated inside that composable where should I keep reference to my viewmodel?

Dilraj Singh

11/07/2022, 8:42 AM

I am facing a weird issue where composable block only gets the latest state from a state flow. Suppose I change state from

A->B

and

B->C

in succession, then the composable function will only get the update of state as

, it will never get the state

, whereas in every other place if I collect the state flow, then I will get 2 state updates,

and

. Is this an intended behaviour or some bug? Code attached in thread.

Christoph Wiesner

11/07/2022, 9:51 AM

i have an UI for assigning a UserRole. the list of user roles is queried from the DB (flow) and exposed as a uiState in the ViewModel. the selected role is a mutable state

private var currentRoleSelection = mutableStateOf<UserRole>(null)

i want to have a initial selection for

currentRoleSelection

(let's say the first role in the list) but i have to wait for the userRoles to be queried from the DB

val uiState: StateFlow<UiState> = combine(   
   userRoles, // Flow<UserRole>
//other flows,
   snapshotFlow { currentRole }
) { ... -> }

how would i set the mutableState once the DB roles are queried? do i need to "convert" that userRoles to a state as well in order to use sth like

derivedStateOf{}

Abhijeet Kumar

11/07/2022, 10:14 AM

Hey guys, I'm facing a repetitive memory leak in compose. I figured this might be related to AutoFill Framework where I'm using onGloballyPositioned modifier in the following way, here's the full heap dump : https://pastebin.com/raw/pA5wawTs . Could this be internal leak or am I missing something here?

Tower Guidev2

11/07/2022, 1:41 PM

Hi i am having difficulty with jetpack compose navigation when dealing with hierachical navigation i believe i require multiple NavHosts one for all my top level screens and another nav host to allow me to navigate to the lower level screens in the process of navigating down the hierachy i wish to replace the main toolbar with a simple toolbar that only displays the Up arrow can anyone point me at some example code to assist my please with this endeavor 😄

iroyo

11/07/2022, 3:19 PM

I want to achieve a “dynamic” height LazyVerticalGrid meaning the height of one item in the row determines the height of the rest to avoid the effect of the image. The only “clean” way is to ditch the Grid and make a LazyColumn with a Row as each item?!! I know the other option would be to hard code the same height for every item in the grid, but that would produce (maybe) an unwanted space between rows. The code to produce the example is simple but it’s added in the thread

Marco Pierucci

11/07/2022, 4:36 PM

Will there be an accompanist version for 1.4.0-alpha01 or are this meant to be supported only from beta version and above?

Zun

11/07/2022, 5:26 PM

When using Paging3 and a LazyColumn, I lose my scroll position upon phone rotation when my LazyColumn starts with an`item` before displaying my actual paging content Is there a proper fix for this? See thread for more info

Arjan van Wieringen

11/07/2022, 6:38 PM

I’ve an architectural question. I like working with the InteractionSource when I need to do complex event management between different composables. I prefer it over multiple callbacks everywhere. I generally add new classes implementing a custom sub interface of Interaction and handle those events in the respective composables or view models. I’m not sure however if there are any big reasons against this or if it is “against” some compose guidelines.

enighma

11/07/2022, 7:09 PM

I want a clickable modifier to only capture clicks at certain areas of the component, and pass others through. Is there a best practice here?

Billy Newman

11/07/2022, 8:39 PM

Hello all. Wondering if anyone has tried and had success using a BadgeBox on a Navbar button? My badge overflows off the side of the navbar. Code and screenshot in comments.

Kai Zhu

11/08/2022, 3:45 AM

Is this piece of doc of

BlendMode

copied from Flutter’s? They are almost identical but Compose’s version lacks the example images, which makes this paragraph (in the red frame) confusing. If adding image links isn’t an option, maybe this paragraph can be deleted as an easy fix? I was confused and searched Google, then found the Flutter doc. This was the beginning of the story.

Yashwant Gowla

11/08/2022, 8:41 AM

Hey folks, we have released a new custom library in Jetpack Compose for showcasing features in the app. Please hit a star if you like it! https://github.com/SimformSolutionsPvtLtd/SSComposeShowCaseView SSComposeShowCaseView is a customizable show case view library which allows to showcase/highlight the particular features of the application with an engaging overlay. It also provides automatic showcase view feature with customised delay and opacity attributes. Features • Simple rounded showcase view • Simple rectangle showcase view • Animated rounded showcase view • Animated rectangle showcase view • Automatic showcase view • Customise delay between showcase, background opacity

Pardip

11/08/2022, 11:18 AM

Is there way to disableclose by swiping down on ModelBottomSheetLayout. I tried to take a look at the parameters that modifies the internal behaviour of the ModalBottomSheetLayout but the internal scaffold seems not to have the sheetGesturesEnabled or isSwipable or isDraggable boolean we were looking for. I found a sheetGesturesEnabled inside the BottomSheetScaffold object, but, as I said, I didn’t find a proper way to implement it.

dave08

11/08/2022, 1:03 PM

I haven't seen anything in the docs about when/if to use

remember {}

mutableStateOf()

inside state holders... or whether the one surrounding the object itself is enough....?

Gonzalo Renedo

11/08/2022, 1:43 PM

could someone help me understand why this happens in recomposition count? It happens to me in all apps, I think it's an android bug

BasicStateCodelab – WaterCounter.kt [BasicStateCodelab.app.main] 2022-11-04 18-58-27.mp4

Gonzalo Renedo

11/08/2022, 1:44 PM

when i do click, recomposition is uncontrolled

theapache64

11/08/2022, 2:08 PM

Can I mark my

ViewModel

@Stable

? What wud be the conditions to do that? (learning about Compose Stability)

Stylianos Gakis

11/08/2022, 4:33 PM

Is there any sample which uses movableContent while also receiving parameters? The official samples here don’t do that. I got issues with it still showing the parameters passed in the previous invokation, showing stale data and as a result and I wonder if I am misusing them somehow. a weird error message

java.lang.ArrayIndexOutOfBoundsException: src.length=16 srcPos=12 dst.length=16 dstPos=11 length=-7

(edit) Seems like movableContentOf + SubCompose still don’t play well with each other even after the 1.3 fix which should fix some of the problems this combo had.

Chris Fillmore

11/08/2022, 7:13 PM

Is there a “tri state switch” composable available? (I think no, but…) What are you using for this? To be clear I mean a Switch for which toggling triggers an action, the result of which determines the switch’s final state.

PHondogo

11/08/2022, 10:39 PM

Hello! How to create programmaticaly such graph and handle tap/drag events on it's vertexes? (Count of vertexes and their titles is planned to pass as argument to composable function).

luke_c

11/09/2022, 12:00 AM

On a View based screen when I use

ModalBottomSheetLayout

in a

ComposeView

within the XML (child of a

LinearLayout

) it crashes immediately unless I add it to the root of the View hierarchy with this error:

java.lang.IllegalArgumentException: The initial value must have an associated anchor.

Is this expected behaviour?

aoriani

11/09/2022, 1:26 AM

is it possible with Jetpack Compose and Roboletric to test a scenario in which the back key is pressed ?