Programming Tutorials

Introduction In this example, we explore using the Scaffold component in Jetpack Compose to create a UI layout that incorporates a snackbar. A snackbar is a small, interactive notification bar that appears briefly at the bottom of the screen, providing user feedback and options like dismissing or interacting with the message. Jetpack Compose's Scaffold structure provides an efficient way to organize the UI elements of an Android application, including features like app bars, floating action buttons, and snackbars. This example demonstrates how to configure a Scaffold with a custom SnackbarHost that shows messages based on user interactions. The goal of this example is to create a simple Android application using Jetpack Compose where users can trigger a snackbar by pressing a button. The snackbar displays dynamic messages and includes a "Hide" button that allows users to dismiss it. The example code is divided into two primary composable functions: GetScaffold and Ma...

Introduction In modern Android development, Jetpack Compose has become the preferred toolkit for building UI in a declarative style, allowing developers to quickly create responsive and flexible layouts. One of the components available in Jetpack Compose is the Snackbar , a lightweight feedback mechanism that can be used to inform users about actions or provide short messages. In this article, we will explore how to create a simple yet powerful Snackbar using the SnackbarHostState to manage multiple Snackbars and showcase them in a controlled, coroutine-friendly environment. This guide walks through the Kotlin code needed to create an app with a button that displays Snackbars sequentially when clicked. This example code demonstrates how to build a scaffold layout using Jetpack Compose and configure a button to trigger multiple Snackbars through the SnackbarHostState . By following these steps, developers can gain an understanding of Compose's state handling, the coroutine scope, a...

Introduction Jetpack Compose has revolutionized the way developers create user interfaces in Android applications by offering a modern, declarative approach to UI development. One of the powerful features in Jetpack Compose is the use of Snackbar , a transient message that appears at the bottom of the screen to inform users of some event or action. While displaying a Snackbar is straightforward, dismissing it programmatically can sometimes pose a challenge, especially if you're looking to handle it based on user actions or specific conditions in your code. In this article, we'll explore how to control the visibility of a Snackbar programmatically using Jetpack Compose in Kotlin. The following walkthrough breaks down a practical example of how to implement and manage the dismissal of a Snackbar. This guide is aimed at Android developers who are looking to leverage the flexibility of Jetpack Compose to enhance their application's user experience. We'll delve into how to c...

Understanding the Snackbar Dismiss Listener in Jetpack Compose Snackbar messages in Android applications are a useful way to provide short, transient feedback to users. Jetpack Compose, the modern toolkit for building native Android UIs, has made it simpler and more intuitive to implement such UI components. However, one challenge developers often face is handling the dismissal of a Snackbar, especially if specific actions or updates need to occur when it is dismissed. The example discussed in this article demonstrates how to display a Snackbar with a dismiss listener using Jetpack Compose and Kotlin. This tutorial is particularly useful for those looking to gain a deeper understanding of managing state, coroutines, and user feedback in a Compose-based application. Let's walk through how this example efficiently utilizes coroutines and state management to handle the appearance and dismissal of a Snackbar, ensuring a smooth user experience. Overview of the Implementation The core fu...

Introduction Jetpack Compose is a modern toolkit for building native Android UI, simplifying the process with a declarative approach. One of its handy UI components is the Snackbar , which provides lightweight feedback to users. This feedback often includes a message and an optional action, allowing users to take a specific step directly from the Snackbar . In this example, we’ll explore how to create a Snackbar in Android using Kotlin and Jetpack Compose, with an action to change the background color of the app. This setup allows for a dynamic, interactive UI that responds to user actions, showcasing how Jetpack Compose handles user feedback seamlessly. In this tutorial, we’ll break down a Kotlin code example that creates a simple Android app with a button. When the button is clicked, a Snackbar appears at the bottom of the screen with an option to change the background color. We’ll explore how each function in the code contributes to building this UI, from setting up the Scaffold ...

Introduction In this article, we will explore how to implement a Scaffold layout in Android’s Jetpack Compose using Kotlin, specifically focusing on integrating a Snackbar for user notifications. Scaffold is a powerful composable in Jetpack Compose that allows developers to set up the fundamental structure of an app, including UI elements such as a TopAppBar, BottomAppBar, FloatingActionButton, Drawer, and Snackbar. Here, we will create a simple interface with a button that triggers a Snackbar to appear at the bottom of the screen. This example is suitable for developers looking to understand the basics of Scaffold and how to work with UI notifications in a modern, declarative style. The project includes the MainActivity file, which serves as the main entry point for this Compose application. In this code, we define the structure with Scaffold , configure a TopAppBar for the app’s title, and create a centered button. This button, when clicked, triggers the display of a Snackbar, al...

MainActivity.kt package com.cfsuman.jetpackcompose import androidx.appcompat.app.AppCompatActivity import android.os.Bundle import androidx.activity.compose.setContent import androidx.compose.foundation.layout.* import androidx.compose.material.* import androidx.compose.runtime.Composable import androidx.compose.runtime.mutableStateOf import androidx.compose.runtime.remember import androidx.compose.ui.Alignment import androidx.compose.ui.Modifier import androidx.compose.ui.graphics.Color import androidx.compose.ui.tooling.preview.Preview import androidx.compose.ui.unit.dp class MainActivity : AppCompatActivity() { override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) setContent { MainContent() } } @Composable fun MainContent(){ val visibleState = remember { mutableStateOf(false) } val backgroundColor = remember { mutableStateOf(Color(0xFFE3DAC9))} Scaffold( ...