xamarin.forms - Xamarin Forms - 调整相机图片大小

Question

有人帮我获取了使用 xamarin forms labs camera 拍照的代码:

picker = DependencyService.Get<IMediaPicker> ();  
                task = picker.TakePhotoAsync (new CameraMediaStorageOptions {
                    DefaultCamera = CameraDevice.Rear, 
                    MaxPixelDimension = 800,

                });

                img.BackgroundColor = Color.Gray;

                Device.StartTimer (TimeSpan.FromMilliseconds (250), () => {
                    if (task != null) {
                        if (task.Status == TaskStatus.RanToCompletion) {
                            Device.BeginInvokeOnMainThread (async () => {
                                //img.Source = ImageSource.FromStream (() => task.Result.Source);
                                var fileAccess = Resolver.Resolve<IFileAccess> ();
                                string imageName = "img_user_" + User.CurrentUser().id + "_" + DateTime.Now.ToString ("yy_MM_dd_HH_mm_ss") + ".jpg";
                                fileName = imageName;

                                fileAccess.WriteStream (imageName, task.Result.Source);
                                fileLocation = fileAccess.FullPath(imageName);

                                FileStream fileStream = new FileStream(fileAccess.FullPath(imageName), FileMode.Open, System.IO.FileAccess.Read);
                                imageUrl = (string)test[0]["url"];
                                img.Source = imageUrl;
                            }); 
                        }

                            return  task.Status != TaskStatus.Canceled
                            && task.Status != TaskStatus.Faulted
                            && task.Status != TaskStatus.RanToCompletion;
                    }
                    return true;
                });

它保存了图像，但是拍摄的手机图片的实际尺寸很大，有没有办法调整它的大小。

Answer 1

Xamarin Media Plugin 的更新允许您调整图像大小
https://github.com/jamesmontemagno/MediaPlugin
...除此之外，您需要一个更通用的调整大小选项(比如图像来自网络调用，而不是设备，然后看看:
https://github.com/InquisitorJax/Wibci.Xamarin.Images