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You place the Canvas in your layout the same way you would with any other Compose UI element. Within the Canvas , you can draw elements with precise control over their style and location. Note: Under the hood, Compose relies on the view-based UI's Canvas and other associated objects.

It adopts a declarative approach, enabling developers to build UI components using Kotlin code instead of XML. Compose leverages the power of Kotlin's language features and functional programming, making UI development faster, more intuitive, and less error-prone.

Jetpack Compose is a modern declarative UI Toolkit for Android. Compose makes it easier to write and maintain your app UI by providing a declarative API that allows you to render your app UI without imperatively mutating frontend views.

You can add Compose-based UI into an existing app that uses a View-based design. To create a new, entirely Compose-based screen, have your activity call the setContent() method, and pass whatever composable functions you like. setContent { // In here, we can call composables! Text(text = "Hello $name!")

A Compose app is made up of composable functions - just regular functions marked with @Composable , which can call other composable functions. A function is all you need to create a new UI component. The annotation tells Compose to add special support to the function for updating and maintaining your UI over time.

Compose allows you to do more with less code, compared to using the Android View system: Buttons, lists or animation - whatever you need to build, now there's less code to write.

Using Compose, you can build your user interface by defining a set of composable functions that take in data and emit UI elements. A simple example is a Greeting widget, which takes in a String and emits a Text widget which displays a greeting message.

Compose allows you to do more with less code, compared to using the Android View system: Buttons, lists or animation - whatever you need to build, now there's less code to write.

Composable functions can recompose, so they are not like standard functions, in the sense that they will not be called only once as part of a call stack. This is how a normal call stack would look. Each function gets called once, and it can call one or multiple other functions.

To create a new project that has Compose setup correctly, proceed as follows: If you're in the Welcome to Android Studio window, click Start a new Android Studio project. ... In the Select a Project Template window, select Empty Compose Activity and click Next. In the Configure your project window, do the following: