async Task FixOrientationAndResize(PickMediaOptions options, MediaFile media)
{
var originalMetadata = new ExifInterface(media.Path);
if (options.RotateImage)
{
await FixOrientationAndResizeAsync(media.Path, options, originalMetadata);
}
else
{
await ResizeAsync(media.Path, options, originalMetadata);
}
if (options.SaveMetaData && IsValidExif(originalMetadata))
{
try
{
originalMetadata?.SaveAttributes();
}
catch (Exception ex)
{
Console.WriteLine($"Unable to save exif {ex}");
}
}
originalMetadata?.Dispose();
}
/// <summary>
/// Picks a photo from the default gallery
/// </summary>
/// <returns>Media file or null if canceled</returns>
public async Task <MediaFile> PickPhotoAsync(PickMediaOptions options = null)
{
if (!(await RequestStoragePermission()))
{
throw new MediaPermissionException(Permission.Storage);
}
var media = await TakeMediaAsync("image/*", Intent.ActionPick, null);
if (options == null)
{
options = new PickMediaOptions();
}
//check to see if we picked a file, and if so then try to fix orientation and resize
if (!string.IsNullOrWhiteSpace(media?.Path))
{
try
{
var originalMetadata = new ExifInterface(media.Path);
if (options.RotateImage)
{
await FixOrientationAndResizeAsync(media.Path, options, originalMetadata);
}
else
{
await ResizeAsync(media.Path, options.PhotoSize, options.CompressionQuality, options.CustomPhotoSize, originalMetadata);
}
if (options.SaveMetaData && IsValidExif(originalMetadata))
{
try
{
originalMetadata?.SaveAttributes();
}
catch (Exception ex)
{
Console.WriteLine($"Unable to save exif {ex}");
}
}
originalMetadata?.Dispose();
}
catch (Exception ex)
{
Console.WriteLine("Unable to check orientation: " + ex);
}
}
return(media);
}
public override async Task ResizeAndRotateAsync(MediaFile file, MediaOptions mediaOptions, DeviceRotation currentRotaion = DeviceRotation.Unknown)
{
var originalMetadata = new ExifInterface(file.Path);
var transformVM = new TransformViewModel
{
FilePath = file.Path,
MediaOptions = mediaOptions,
Exif = originalMetadata,
CurrentRotation = currentRotaion
};
await ResizeAndRotateAsync(transformVM);
originalMetadata?.Dispose();
GC.Collect();
}
/// <summary>
/// Take a photo async with specified options
/// </summary>
/// <param name="options">Camera Media Options</param>
/// <returns>Media file of photo or null if canceled</returns>
public async Task <MediaFile> TakePhotoAsync(StoreCameraMediaOptions options)
{
if (!IsCameraAvailable)
{
throw new NotSupportedException();
}
if (!(await RequestCameraPermissions()))
{
throw new MediaPermissionException(Permission.Camera);
}
VerifyOptions(options);
var media = await TakeMediaAsync("image/*", MediaStore.ActionImageCapture, options);
if (string.IsNullOrWhiteSpace(media?.Path))
{
return(media);
}
if (options.SaveToAlbum)
{
try
{
var fileName = System.IO.Path.GetFileName(media.Path);
var publicUri = MediaPickerActivity.GetOutputMediaFile(context, options.Directory ?? "temp", fileName, true, true);
using (System.IO.Stream input = File.OpenRead(media.Path))
using (System.IO.Stream output = File.Create(publicUri.Path))
input.CopyTo(output);
media.AlbumPath = publicUri.Path;
var f = new Java.IO.File(publicUri.Path);
//MediaStore.Images.Media.InsertImage(context.ContentResolver,
// f.AbsolutePath, f.Name, null);
try
{
Android.Media.MediaScannerConnection.ScanFile(context, new[] { f.AbsolutePath }, null, context as MediaPickerActivity);
ContentValues values = new ContentValues();
values.Put(MediaStore.Images.Media.InterfaceConsts.Title, System.IO.Path.GetFileNameWithoutExtension(f.AbsolutePath));
values.Put(MediaStore.Images.Media.InterfaceConsts.Description, string.Empty);
values.Put(MediaStore.Images.Media.InterfaceConsts.DateTaken, Java.Lang.JavaSystem.CurrentTimeMillis());
values.Put(MediaStore.Images.ImageColumns.BucketId, f.ToString().ToLowerInvariant().GetHashCode());
values.Put(MediaStore.Images.ImageColumns.BucketDisplayName, f.Name.ToLowerInvariant());
values.Put("_data", f.AbsolutePath);
var cr = context.ContentResolver;
cr.Insert(MediaStore.Images.Media.ExternalContentUri, values);
}
catch (Exception ex1)
{
Console.WriteLine("Unable to save to scan file: " + ex1);
}
var contentUri = Android.Net.Uri.FromFile(f);
var mediaScanIntent = new Intent(Intent.ActionMediaScannerScanFile, contentUri);
context.SendBroadcast(mediaScanIntent);
}
catch (Exception ex2)
{
Console.WriteLine("Unable to save to gallery: " + ex2);
}
}
//check to see if we need to rotate if success
try
{
var exif = new ExifInterface(media.Path);
if (options.RotateImage)
{
await FixOrientationAndResizeAsync(media.Path, options, exif);
}
else
{
await ResizeAsync(media.Path, options.PhotoSize, options.CompressionQuality, options.CustomPhotoSize, exif);
}
if (options.SaveMetaData && IsValidExif(exif))
{
SetMissingMetadata(exif, options.Location);
try
{
exif?.SaveAttributes();
}
catch (Exception ex)
{
Console.WriteLine($"Unable to save exif {ex}");
}
}
exif?.Dispose();
}
catch (Exception ex)
{
Console.WriteLine("Unable to check orientation: " + ex);
}
return(media);
}
/// <summary>
/// Take a photo async with specified options
/// </summary>
/// <param name="options">Camera Media Options</param>
/// <param name="token">Cancellation token</param>
/// <returns>Media file of photo or null if canceled</returns>
public async Task <MediaFile> TakePhotoAsync(StoreCameraMediaOptions options, CancellationToken token = default(CancellationToken))
{
if (!IsCameraAvailable)
{
throw new NotSupportedException();
}
if (!(await RequestCameraPermissions()))
{
throw new MediaPermissionException(nameof(Permissions.Camera));
}
VerifyOptions(options);
var media = await TakeMediaAsync("image/*", MediaStore.ActionImageCapture, options, token);
if (string.IsNullOrWhiteSpace(media?.Path))
{
return(media);
}
if (options.SaveToAlbum)
{
var fileName = System.IO.Path.GetFileName(media.Path);
var uri = MediaPickerActivity.GetOutputMediaFile(context, options.Directory ?? "temp", fileName, true, true);
var f = new Java.IO.File(uri.Path);
media.AlbumPath = uri.ToString();
try
{
var values = new ContentValues();
values.Put(MediaStore.Audio.Media.InterfaceConsts.DisplayName, System.IO.Path.GetFileNameWithoutExtension(f.AbsolutePath));
values.Put(MediaStore.Audio.Media.InterfaceConsts.MimeType, "image/jpeg");
values.Put(MediaStore.Images.Media.InterfaceConsts.Description, string.Empty);
values.Put(MediaStore.Images.Media.InterfaceConsts.DateTaken, Java.Lang.JavaSystem.CurrentTimeMillis());
values.Put(MediaStore.Images.ImageColumns.BucketId, f.ToString().ToLowerInvariant().GetHashCode());
values.Put(MediaStore.Images.ImageColumns.BucketDisplayName, f.Name.ToLowerInvariant());
var cr = context.ContentResolver;
var albumUri = cr.Insert(MediaStore.Images.Media.ExternalContentUri, values);
using (System.IO.Stream input = File.OpenRead(media.Path))
using (System.IO.Stream output = cr.OpenOutputStream(albumUri))
input.CopyTo(output);
}
catch (Exception ex)
{
Console.WriteLine("Unable to save to gallery: " + ex);
}
}
//check to see if we need to rotate if success
try
{
var exif = new ExifInterface(media.Path);
if (options.RotateImage)
{
await FixOrientationAndResizeAsync(media.Path, options, exif);
}
else
{
await ResizeAsync(media.Path, options, exif);
}
if (options.SaveMetaData && IsValidExif(exif))
{
SetMissingMetadata(exif, options.Location);
try
{
exif?.SaveAttributes();
}
catch (Exception ex)
{
Console.WriteLine($"Unable to save exif {ex}");
}
}
exif?.Dispose();
}
catch (Exception ex)
{
Console.WriteLine("Unable to check orientation: " + ex);
}
return(media);
}
