All 7 Camera & Media Handling in Flutter questions
More in Camera & Media Handling in Flutter
What is the image_picker package, and how does it provide a simpler way to let users select an existing photo or take a new one, compared to directly using the lower level camera package? How do you properly request and handle runtime camera and photo library permissions in a Flutter app, and what happens if a user denies that permission? How can you compress or resize an image captured by the camera before uploading it to a server, and why is this an important consideration for both performance and data usage? How does the video_player package let a Flutter app play video content, whether from a local file, a network URL, or a bundled asset? What strategies help manage memory usage effectively when a Flutter app needs to display many images at once, such as within a large scrolling photo gallery? How can heavy image processing tasks, such as applying a filter or resizing a very large image, be moved off the main UI thread using isolates to avoid causing the app's interface to freeze or stutter?
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How does the camera package let a Flutter app access a device's camera to capture photos or record video?

Beginner

Answer

The camera package provides a Flutter friendly interface for interacting with a device's physical camera hardware, letting you display a live camera preview on screen, capture a still photo, or record video, and using it typically involves first discovering the list of available cameras on the device, initializing a CameraController for the specific camera you want to use, and then displaying that controller's live preview within your widget tree using the CameraPreview widget.
final cameras = await availableCameras();
final controller = CameraController(cameras[0], ResolutionPreset.medium);
await controller.initialize();
Real-world example A receipt scanning app initializes the device's rear facing camera using the camera package, displaying a live preview so the user can properly align their receipt before actually capturing the photo.

Common follow-ups: What permissions need to be requested before using the camera package?;What is the difference between using the camera package directly versus using the simpler image_picker package?

Flutter Plugin & Package Development;Flutter App Security Best Practices
All 7 Camera & Media Handling in Flutter questions