Accessing camera devices requires a secure browsing context. Broadly speaking, this means that you need to serve your web application over HTTPS (or localhost
for local development). For insecure contexts CameraPlatform.availableCameras
might throw a CameraException
with the permissionDenied
error code.
The device orientation implementation is backed by Screen Orientation Web API
with the following browser support:
For the browsers that do not support the device orientation:
CameraPlatform.onDeviceOrientationChanged
returns an empty stream.CameraPlatform.lockCaptureOrientation
and CameraPlatform.unlockCaptureOrientation
throw a PlatformException
with the orientationNotSupported
error code.The flash mode and zoom level implementation is backed by Image Capture Web API with the following browser support:
For the browsers that do not support the flash mode:
CameraPlatform.setFlashMode
throws a PlatformException
with the torchModeNotSupported
error code.For the browsers that do not support the zoom level:
CameraPlatform.getMaxZoomLevel
, CameraPlatform.getMinZoomLevel
and CameraPlatform.setZoomLevel
throw a PlatformException
with the zoomLevelNotSupported
error code.The image capturing implementation is backed by URL.createObjectUrl
Web API with the following browser support:
The web platform does not support dart:io
. Attempts to display a captured image using Image.file
will throw an error. The capture image contains a network-accessible URL pointing to a location within the browser (blob) and can be displayed using Image.network
or Image.memory
after loading the image bytes to memory.
See the example below:
final Image image; if (kIsWeb) { image = Image.network(capturedImage.path); } else { image = Image.file(File(capturedImage.path)); }
The video recording implementation is backed by MediaRecorder Web API with the following browser support:
.
A video is recorded in one of the following video MIME types:
Pausing, resuming or stopping the video recording throws a PlatformException
with the videoRecordingNotStarted
error code if the video recording was not started.
For the browsers that do not support the video recording:
CameraPlatform.startVideoRecording
throws a PlatformException
with the notSupported
error code.The web implementation of camera
is missing the following features: