如果您可以提供帮助，请，我正在尝试将APK文件从服务器移动到外部存储。

我面对这个问题：Android.OS.FileUriExposedException：'file：///storage/emulated/0/Download/MyAppApks/add.txt通过Intent.getData（）暴露在应用程序之外'

var dir = Android.OS.Environment.GetExternalStoragePublicDirectory(Android.OS.Environment.DirectoryDownloads);
                    var apkDirectory = new Java.IO.File(dir, "MyAppApks");
                    apkDirectory.Mkdirs();

                    var client = new HttpClient();
                    var apkUrl = "http://**.**.**.**:2030/com.companyname.app1.apk";
                    var response = await client.GetAsync(apkUrl);

                    var apkFile = new Java.IO.File(apkDirectory, "com.companyname.app1.apk");
                    using (var stream = new FileStream(apkFile.AbsolutePath, FileMode.Create, FileAccess.Write))
                    {
                        await response.Content.CopyToAsync(stream);
                    }

                    var intent = new Intent(Intent.ActionView);
                    intent.SetDataAndType(Android.Net.Uri.FromFile(apkFile), "application/vnd.android.package-archive");
                    intent.SetFlags(ActivityFlags.NewTask);
                    Android.App.Application.Context.StartActivity(intent);