How to create recycler view in Compose Jetpack?

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Is there any special way to create recyclerView in Compose Jetpack? Or it is the same as usual?

In jetnews sample project for list/recyclerview they are using VerticalScroller with Column and using forEach to populate items below @Composable function is example

@Composable
private fun TabWithTopics(tabname: String, topics: List<String>) {
    VerticalScroller {
        Column {
            HeightSpacer(16.dp)
            topics.forEach { topic ->
                TopicItem(
                    getTopicKey(
                        tabname,
                        "- ",
                        topic
                    ), topic
                )
                TopicDivider()
            }
        }
    }
} 

For class and method check this link

https://github.com/android/compose-samples/blob/master/JetNews/app/src/main/java/com/example/jetnews/ui/interests/InterestsScreen.kt

For more information you can download/clone jetnews sample from check here's link

https://github.com/android/compose-samples/tree/master/JetNews

Hope it's helpful for you.

How to make a Scrollable list in Jetpack Compose?, If you are new to Jetpack Compose I would recommend going what all code you would have to write if you were using a RecyclerView , I bet� You would be surprised how easy it is to create a list in Jetpack Compose! If you are new to Jetpack Compose I would recommend going through the official documentation first. Beginning with Android Studio 4.0 Canary 1 , you can preview your composable functions within the IDE.

Examples from JetNews app have static data. It's worth to mention that according to the recent Google presentation (see especially from 18:30), we should consider ScrollingList, which is intended for list with undefined number of elements (e.g. downloaded from the web), what was traditionally handled by RecyclerView. Then, it should look like this:

@Composable
fun NewsFeed(stories: List<StoryData>) {
  ScrollingList(stories) { story ->
    StoryWidget(story)
  }
}

or we can do similar thing with LiveData or RxJava Observable/Flowable:

@Composable
fun NewsFeed(stories: LiveData<List<StoryData>>) {
  ScrollingList(stories.observe()) { story ->
    StoryWidget(story)
  }
}

In such case, we are re-using StoryWidget (or any other widget of our choice) in the every step of the iteration with data emitted dynamically through the lambda expression.

How to make a RecyclerView in Jetpack Compose?, This example is similar to creating a list using LinearLayout in a pre-Compose world. It does not do recycling of the views. I'm going to stick my neck out and� How to create recycler view in Compose Jetpack? Hot Network Questions Did I miss EU customs on a flight from Brazil with stopover in Portugal to Germany?

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According to this article there is new version:

@Composable
fun <T> AdapterList(
 data: List<T>,
 modifier: Modifier = Modifier.None,
  itemCallback: @Composable() (T) -> Unit
)

@Composable
 fun Scrollable(
dragDirection: DragDirection,
scrollableState: ScrollableState,
onScrollStarted: (startedPosition: PxPosition) -> Unit = {},
onScrollStopped: (velocity: Float) -> Unit = {},
enabled: Boolean = true,
children: @Composable() () -> Unit
)

 AdapterList(
    data = (1..20).map { it }.toList()
) {
    if (it % 2 == 0) {
        Text("$it Even", style = TextStyle(fontSize = 40.sp, color = 
  Color.Gray))
    } else {
        Text(text = "$it Odd", style = TextStyle(fontSize = 70.sp))
    }
}

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This is a sample code that uses AdapterList for implementing recylcerview in compose

@Composable
fun Feeds(feeds:LiveData<List<Feed>>) {
    val mFeeds by feeds.observeAsState(emptyList())
    AdapterList(data = feeds){feed->
    FeedsItem(feed)
    }
}

Jetpack Compose, I am sure by now you must have realised how easy it is to make a RecyclerView like list in Jetpack Compose using AdapterList . If you try to� Jetpack Compose is built around composable functions. These functions let you define your app's UI programmatically by describing its shape and data dependencies, rather than focusing on the process of the UI's construction. To create a composable function, just add the @Composable annotation to the function name.

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How to create recycler view in Compose Jetpack?, Jetpack Compose aims to be a declarative framework to build your RecyclerView's view holder without exposing the internal views and with� Android Jetpack Compose Review Tagged in: Android, Jetpack, Testing, Compose. During the last Google I/O the Android team officially announced a brand new Jetpack library named Compose. Trust me when I say this library could change the way developers write Android applications in the future. So let's review it and write down some thoughts about it.

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Comments
  • Yup. What about the recycling.
  • From where is ScrollingList element? I'm trying use it and it can not be found for the IDE.
  • @LucasSousa You are right. ScrollingList is not element. I google it and found that ScrollingList is not available now. It will be available in the next release. So, we have to wait. (Found here)