Android Sunflower with Compose

Warning: The Sunflower repository is no longer under maintenance, We are prioritizing https://github.com/android/compose-samples as the up-to-date source of truth for Compose best practises. Please use that repository and sample set to continue learning about Jetpack Compose. If you’d like to continue using Sunflower, we encourage you to maintain your own fork of the sample.

A gardening app illustrating Android development best practices with migrating a View-based app to Jetpack Compose. To learn about how Sunflower was migrated to Compose, see the migration journey document.

[!Note] To see the original View implementation of Sunflower, checkout the views branch.

Screenshots

Features

This sample showcases how to migrate an existing View-based app (Material 2) to Compose (Material 3). See the linked migration journey doc above to learn more.

[!Note] As Compose cannot render HTML code in Text yet. The AndroidViewBinding API is used to embed a TextView in Compose. See the PlantDescription composable in the PlantDetailView file.

Requirements

Unsplash API key

Sunflower uses the Unsplash API to load pictures on the gallery screen. To use the API, you will need to obtain a free developer API key. See the Unsplash API Documentation for instructions.

Once you have the key, add this line to the gradle.properties file, either in your user home directory (usually ~/.gradle/gradle.properties on Linux and Mac) or in the project’s root folder:

unsplash_access_key=<your Unsplash access key>

The app is still usable without an API key, though you won’t be able to navigate to the gallery screen.

Android Studio IDE setup

For development, the latest version of Android Studio is required. The latest version can be downloaded from here.

Sunflower uses ktlint to enforce Kotlin coding styles. Here’s how to configure it for use with Android Studio (instructions adapted from the ktlint README):

Close Android Studio if it’s open
Download ktlint using these installation instructions
Apply ktlint settings to Android Studio using these instructions
Start Android Studio

Additional resources

Check out these Wiki pages to learn more about Android Sunflower:

Non-Goals

Previously, this sample app was focused on demonstrating best practices for multiple Jetpack libraries. However, this is no longer the case and development will instead be focused on how to adopt Compose in an existing View-based app. So, there are no plans to implement features outside of this scope. Keep this in mind when making contributions to this library.

Support

Stack Overflow:
- https://stackoverflow.com/questions/tagged/android-jetpack-compose

If you’ve found an error in this sample, please file an issue: https://github.com/android/sunflower/issues

Patches are encouraged, and may be submitted by forking this project and submitting a pull request through GitHub.

Third Party Content

Select text used for describing the plants (in plants.json) are used from Wikipedia via CC BY-SA 3.0 US (license in ASSETS_LICENSE).

“seed” by Aisyah is licensed under CC BY 3.0