Programming Tutorials

Introduction In the world of Android app development, the Jetpack Compose framework has transformed the way developers design user interfaces, making it more efficient and straightforward. One of the key features of Jetpack Compose is its ability to build modern UI components declaratively, which greatly reduces boilerplate code and allows for more expressive designs. In this article, we explore the implementation of a top app bar with a menu in Jetpack Compose using Kotlin. This is particularly useful for applications that require a sleek and intuitive navigation experience with easy access to commonly used features. The sample project we are discussing focuses on setting up a TopAppBar that includes a navigation icon, action icons, and a dropdown menu. By understanding this example, you'll gain insights into how to efficiently manage UI components within a scaffold structure while maintaining a clean and readable codebase. Let’s break down the functionality step by step to under...

Centering the Title in Jetpack Compose TopAppBar: A Guide for Android Kotlin Developers Jetpack Compose has revolutionized Android UI development, offering a powerful, declarative approach to building user interfaces. One of the most commonly used UI components in modern applications is the TopAppBar , which typically houses the app's title, navigation icons, and other action items. While it’s quite straightforward to implement a TopAppBar , customizing it to fit specific design requirements, such as centering the title text, may not be immediately obvious to new developers or those transitioning from the XML-based approach. In this article, we will break down a practical example of how to create a TopAppBar in Jetpack Compose with a centered title. We'll explore how to leverage composables, modifiers, and Jetpack Compose's layout capabilities to achieve this design. This guide is perfect for developers looking to get a better understanding of structuring a TopAppBar whil...

Introduction In modern Android development, Jetpack Compose has emerged as a powerful toolkit for building user interfaces with a more declarative approach. Developers no longer need to manage complex UI hierarchies and state changes manually. Instead, Compose enables creating highly responsive and interactive UI elements in a simplified and intuitive manner. One of the key elements in any Android application is the top app bar, which provides a space for the app's title and actionable icons such as navigation, search, and other contextual actions. This example demonstrates the implementation of a TopAppBar with action buttons using Jetpack Compose in Kotlin. The TopAppBar allows users to increase or decrease a counter value by interacting with the icons on the app bar. It highlights how Jetpack Compose simplifies building UI components, handling state management, and providing real-time feedback to users. Detailed Breakdown The example begins by setting up the MainActivity , whi...

Introduction In this Kotlin-based Android application example, we demonstrate how to use Jetpack Compose to create a TopAppBar navigation within a Scaffold . Jetpack Compose simplifies Android UI development by leveraging a declarative approach, which is different from the traditional XML layouts used in Android development. By using Composable functions, we can build UI components in a way that makes them easily reusable and highly customizable. This example creates a basic structure with a top navigation bar, a drawer that slides out from the left, and main content in the center of the screen. The goal of this tutorial is to walk through the main components of the example code, explaining the purpose of each part and how it fits into the overall structure. By the end, you’ll have a clearer understanding of how to use TopAppBar , Scaffold , and Jetpack Compose’s composable functions to create a structured and visually appealing layout. Breakdown of MainActivity.kt : Setting up the Ma...

Compose TopAppBar The TopAppBar is a popular widget of an android jetpack compose application. The most android application contains a TopAppBar component. The TopAppBar widget displays information for the current screen and it also displays actions relating to the screen subject. The TopAppBar widget has several slots for inside components. There is a slot for showing a title on the top app bar and a slot for the navigation icon. Another predefined slot for showing some actions. Navigation icon used to open and close drawer navigation. The ‘actions’ slot has a Row scope, so action IconButtons inside the slot are displayed horizontally side by side. TopAppBar ‘title’ parameter allows us to pass a Text object to show a title on it. And the ‘navigationIcon’ parameter is used to display a navigation icon typically an IconButton on a TopAppBar. The ‘actions’ parameter is for passing some action IconButtons to do some task for screen content. Android jetpack developers can display...