How to Add LazyColumn with Divider in Android Jetpack Compose

In this tutorial, we’ll learn how to add dividers to a LazyColumn in Jetpack Compose, Google’s modern toolkit for building native Android UIs. The LazyColumn widget is particularly useful for displaying lists of items in a memory-efficient manner.

LazyColumn is a composable function that lazily loads and displays a vertical list of items. It only renders what’s currently visible on the screen, which makes it a more efficient choice for large lists compared to the traditional Column.

On the other hand, Divider is a thin horizontal line that’s commonly used to separate items in a list. It provides a clear visual break between individual items, improving readability and enhancing the user experience.

Here’s a simple example of how to add dividers to a LazyColumn:

import androidx.compose.foundation.lazy.LazyColumn
import androidx.compose.foundation.lazy.items
import androidx.compose.material.Divider
import androidx.compose.runtime.Composable
import androidx.compose.ui.graphics.Color

@Composable
fun MyScreen() {
    val listItems = (1..20).toList()

    LazyColumn {
        items(listItems) { item ->
            Text(text = "Item $item")
            Divider(color = Color.Black)
        }
    }
}

In this code snippet, we’ve created a LazyColumn with a list of 20 items. For each item, we display a Text widget followed by a Divider. The Divider is drawn with a black color.

By incorporating dividers into your LazyColumn, you can make your list-based UIs more organized and visually appealing.