如何在跨平台应用程序的Xamarin Forms中将图像存储在sqlite数据库中？

这是我将图像保存在sqlite中所做的工作，并且在成功保存图像时返回了图像的路径，您可以根据需要进行更改。此处图像以字节数组的形式存储。

链接到我的博客文章：跨平台实用程序，用于将图像保存在sqlite中。

通用界面：

 public interface IFileUtility
        {
            /// <summary>
            /// Use to save file in device specific folders
            /// </summary>
            /// <param name="fileName"></param>
            /// <param name="fileStream"></param>
            /// <returns></returns>
            string SaveFile(string fileName,byte[] fileStream);

            /// <summary>
            /// Used to delete the existing file directory, before syncing the file again.
            /// </summary>
            void DeleteDirectory();

        }

Android专用代码：

public class FileUtility : IFileUtility
    {
        public string SaveFile(string fileName,byte[] imageStream)
        {
            string path = null;
            string imageFolderPath = System.IO.Path.Combine(System.Environment.GetFolderPath(Environment.SpecialFolder.Personal), "ProductImages");

            //Check if the folder exist or not
            if (!System.IO.Directory.Exists(imageFolderPath))
            {
                System.IO.Directory.CreateDirectory(imageFolderPath);
            }
            string imagefilePath = System.IO.Path.Combine(imageFolderPath, fileName);

            //Try to write the file bytes to the specified location.
            try
            {
                System.IO.File.WriteAllBytes(imagefilePath, imageStream);
                path = imagefilePath;
            }
            catch (System.Exception e)
            {
                throw e;
            }
            return path;
        }

        public void DeleteDirectory()
        {
            string imageFolderPath = System.IO.Path.Combine(System.Environment.GetFolderPath(Environment.SpecialFolder.Personal), "ProductImages");
            if (System.IO.Directory.Exists(imageFolderPath))
            {
                System.IO.Directory.Delete(imageFolderPath,true);
            }
        }
    }

iOS特定代码：

 public class FileUtility : IFileUtility
    {
        public string SaveFile(string fileName,byte[] fileStream)
        {
            string path = null;
            string imageFolderPath = System.IO.Path.Combine(System.Environment.GetFolderPath(Environment.SpecialFolder.Personal), "ProductImages");

            //Check if the folder exist or not
            if (!System.IO.Directory.Exists(imageFolderPath))
            {
                System.IO.Directory.CreateDirectory(imageFolderPath);
            }
            string imagefilePath = System.IO.Path.Combine(imageFolderPath, fileName);

            //Try to write the file bytes to the specified location.
            try
            {
                System.IO.File.WriteAllBytes(imagefilePath, fileStream);
                path = imagefilePath;
            }
            catch (System.Exception e)
            {
                throw e;
            }
            return path;
        }

        public void DeleteDirectory()
        {
            string imageFolderPath = System.IO.Path.Combine(System.Environment.GetFolderPath(Environment.SpecialFolder.Personal), "ProductImages");
            if (System.IO.Directory.Exists(imageFolderPath))
            {
                System.IO.Directory.Delete(imageFolderPath,true);
            }
        }
    }