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 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...

Introduction In this Android example, we'll explore how to use Jetpack Compose to create a dynamic user interface that opens and closes a navigation drawer in response to user interactions. A navigation drawer is a commonly used UI component that slides in from the side, allowing easy access to various sections within an app. This example demonstrates a straightforward approach to handling a navigation drawer using Jetpack Compose, which is a modern toolkit that simplifies building native UI in Android applications with a declarative approach. The code in this example is organized to provide a seamless experience for managing the drawer state through simple buttons and icons. By utilizing coroutines to manage asynchronous actions, it offers smooth transitions for opening and closing the drawer. We'll go through each part of the code, breaking down how the components work together and how coroutine scopes are utilized to interact with the drawer. Setting Up the Main Activity The...

Introduction Jetpack Compose has revolutionized the way Android developers build user interfaces, moving towards a more declarative programming style. Among the various UI elements it provides, the Scaffold component is particularly valuable, as it creates a structured UI layout with elements like toolbars, drawers, and floating action buttons integrated seamlessly. This guide explores the use of Scaffold with a drawer in Jetpack Compose, providing a clear example of how to create a layout with a top app bar and a side navigation drawer. This example, built in Kotlin, illustrates how to implement a scaffold with a drawer, customize its appearance, and handle click events for drawer items. The Scaffold component makes it easy to set up a cohesive layout for Android apps, giving developers control over the look and feel while simplifying the code needed to achieve it. We’ll walk through the code structure, focusing on how each composable function contributes to a polished and user-fri...

MainActivity.kt package com.cfsuman.jetpackcompose import androidx.appcompat.app.AppCompatActivity import android.os.Bundle import androidx.activity.compose.setContent import androidx.compose.foundation.background import androidx.compose.foundation.clickable import androidx.compose.foundation.layout.* import androidx.compose.foundation.shape.RoundedCornerShape import androidx.compose.material.* import androidx.compose.material.icons.Icons import androidx.compose.material.icons.filled.* import androidx.compose.runtime.Composable import androidx.compose.runtime.mutableStateOf import androidx.compose.runtime.remember import androidx.compose.runtime.rememberCoroutineScope import androidx.compose.ui.Alignment import androidx.compose.ui.Modifier import androidx.compose.ui.graphics.Color import androidx.compose.ui.text.font.FontFamily import androidx.compose.ui.text.font.FontWeight import androidx.compose.ui.text.style.TextAlign import androidx.compose.ui.tooling.preview.Preview impo...