Programming Tutorials

Introduction Jetpack Compose, Android's modern toolkit for building native UI, emphasizes declarative programming to make UI design simpler and more intuitive. In traditional Android development, managing user interactions, such as button clicks, often involves multiple layers of XML layouts and listener implementations. However, Jetpack Compose removes this complexity, making it easier to manage UI interactions through composable functions. This example demonstrates how to handle onClick events in Jetpack Compose by passing these events to functions. By breaking down this Kotlin example, we can explore how button clicks increment or decrement a counter and how UI components are structured within a Scaffold . This code provides a clean and organized way to manage state and UI actions, illustrating key Compose concepts like state management and composable functions. MainActivity Setup In the MainActivity.kt file, the code starts with the MainActivity class, extending AppCompatAct...

Introduction This code demonstrates how to implement a press listener in Jetpack Compose. It creates a clickable circular button that displays a rotating text with a counter value. Each press on the button increments the counter by 45 degrees, with a maximum value of 360 degrees. The code utilizes various Jetpack Compose features including animations, state management, and gesture detection. Breakdown The code is divided into three main sections: MainActivity : This is the standard Android activity class that sets the content of the app using setContent with the MainContent composable function. MainContent : This composable function defines the main layout of the app. It uses a Column to center a clickable text element vertically and horizontally. State Management : remember is used to create a mutable state variable counter to track the current angle value. animateFloatAsState animates the rotation angle based on the counter value. Click detection : A pointerInput ...