startPreview method
Future<FlCameraOptions?>
startPreview(
- String camerId, {
- CameraResolution resolution = CameraResolution.high,
第四步 开始预览
Step 4 start Preview
camerId
需要预览的相机 Camera ID to preview
resolution
预览相机支持的分辨率 Preview the resolution supported by the camera
Implementation
Future<FlCameraOptions?> startPreview(String camerId,
{CameraResolution resolution = CameraResolution.high}) async {
if (!_supportPlatform) return null;
final Map<dynamic, dynamic>? map = await channel
.invokeMethod<Map<dynamic, dynamic>?>('startPreview', <String, dynamic>{
'cameraId': camerId,
'resolution': resolution.toString().split('.')[1]
});
if (map != null) {
_cameraOptions = FlCameraOptions.fromMap(map);
return _cameraOptions;
}
return null;
}