private void ReadExifMetadata(string fileName)
{
ExifInterface exif = new ExifInterface(fileName);
string model = exif.GetAttribute(ExifInterface.TagModel);
string desc = exif.GetAttribute(ExifInterface.TagImageDescription);
string make = exif.GetAttribute(ExifInterface.TagMake);
}
void SetMissingMetadata(ExifInterface exif, Location location)
{
if (exif == null)
{
return;
}
var position = new float[6];
if (!exif.GetLatLong(position) && location != null)
{
exif.SetAttribute(ExifInterface.TagGpsLatitude, CoordinateToRational(location.Latitude));
exif.SetAttribute(ExifInterface.TagGpsLongitude, CoordinateToRational(location.Longitude));
exif.SetAttribute(ExifInterface.TagGpsLatitudeRef, location.Latitude > 0 ? "N" : "S");
exif.SetAttribute(ExifInterface.TagGpsLongitudeRef, location.Longitude > 0 ? "E" : "W");
}
if (string.IsNullOrEmpty(exif.GetAttribute(ExifInterface.TagDatetime)))
{
exif.SetAttribute(ExifInterface.TagDatetime, DateTime.Now.ToString("yyyy:MM:dd hh:mm:ss"));
}
if (string.IsNullOrEmpty(exif.GetAttribute(ExifInterface.TagMake)))
{
exif.SetAttribute(ExifInterface.TagMake, Build.Manufacturer);
}
if (string.IsNullOrEmpty(exif.GetAttribute(ExifInterface.TagModel)))
{
exif.SetAttribute(ExifInterface.TagModel, Build.Model);
}
}
public void GetExifMetadata(string fileName, string OrderId)
{
ExifInterface exif = new ExifInterface(fileName);
string exifMake = exif.GetAttribute(ExifInterface.TagMake);
string exifModel = exif.GetAttribute(ExifInterface.TagModel);
if (string.IsNullOrEmpty(exifMake))
{
exifMake = string.Empty;
}
if (string.IsNullOrEmpty(exifModel))
{
exifModel = string.Empty;
}
exifMake = exifMake + " " + exifModel;
string exifExtraData = GetLocationForExif(exif);
string tmp = GetPhoneInformation();
string exifUserData = tmp + "BatchID=" + OrderId + ",";
exifModel = exifUserData + exifExtraData;
exif.SetAttribute(ExifInterface.TagMake, exifModel);
exif.SetAttribute(ExifInterface.TagModel, exifModel);
exif.SetAttribute(ExifInterface.TagImageDescription, exifModel);
exif.SaveAttributes();
//ReadExifMetadata(fileName);
}
public static void Print(this ExifInterface dest)
{
foreach (var tagName in tagNames)
{
if (!string.IsNullOrEmpty(dest.GetAttribute(tagName)))
{
Debug.WriteLine($"{tagName}: {dest.GetAttribute(tagName)}");
}
}
}
private Bitmap LoadAndResizeBitmap()
{
if (Path.StartsWith("http"))
{
//var webImage = GetImageBitmapFromUrl(Path);
//return Bitmap.CreateScaledBitmap(webImage, _screenWidth, _screenHeight, false);
return(GetImageBitmapFromUrl(Path));
}
// First we get the the dimensions of the file on disk
BitmapFactory.Options options = new BitmapFactory.Options {
InJustDecodeBounds = true
};
BitmapFactory.DecodeFile(Path, options);
// Next we calculate the ratio that we need to resize the image by
// in order to fit the requested dimensions.
int outHeight = options.OutHeight;
int outWidth = options.OutWidth;
int inSampleSize = 1;
if (outHeight > _screenHeight || outWidth > _screenWidth)
{
inSampleSize = outWidth > outHeight
? outHeight / _screenHeight
: outWidth / _screenWidth;
}
// Now we will load the image and have BitmapFactory resize it for us.
options.InSampleSize = inSampleSize;
options.InJustDecodeBounds = false;
Bitmap resizedBitmap = BitmapFactory.DecodeFile(Path, options);
// Images are being saved in landscape, so rotate them back to portrait if they were taken in portrait
Matrix mtx = new Matrix();
ExifInterface exif = new ExifInterface(Path);
string orientation = exif.GetAttribute(ExifInterface.TagOrientation);
switch (orientation)
{
case "6": // portrait
mtx.PreRotate(90);
resizedBitmap = Bitmap.CreateBitmap(resizedBitmap, 0, 0, resizedBitmap.Width, resizedBitmap.Height, mtx, false);
mtx.Dispose();
mtx = null;
break;
case "1": // landscape
break;
default:
mtx.PreRotate(90);
resizedBitmap = Bitmap.CreateBitmap(resizedBitmap, 0, 0, resizedBitmap.Width, resizedBitmap.Height, mtx, false);
mtx.Dispose();
mtx = null;
break;
}
return(resizedBitmap);
}
public string GetMetadata(ExifInterface exif)
{
//var wtf = (Android.Media.Orientation)exif.GetAttributeInt(ExifInterface.TagOrientation, (int)Android.Media.Orientation.Normal);
var wtf = exif.GetAttribute("ThumbnailImage");
wtf = exif.GetAttribute("DateTime");
wtf = exif.GetAttribute("DateTimeOriginal");
wtf = exif.GetAttribute("DateTimeDigitized");
int debug = 1;
return(wtf);
}
public static void Copy(this ExifInterface dest, ExifInterface source)
{
foreach (var tagName in tagNames)
{
dest.SetAttribute(tagName, source.GetAttribute(tagName));
}
}
private async Task Save(byte[] bytes)
{
using (OutputStream output = new FileOutputStream(File))
{
output.Write(bytes);
}
global::Android.Graphics.Bitmap bitmap = global::Android.Graphics.BitmapFactory.DecodeFile(File.AbsolutePath);
ExifInterface exif = new ExifInterface(File.AbsolutePath);
string orientation = exif.GetAttribute(ExifInterface.TagOrientation);
switch (orientation)
{
case "6":
bitmap = Camera1Fragment.Rotate(bitmap, 90);
break;
case "8":
bitmap = Camera1Fragment.Rotate(bitmap, 270);
break;
case "3":
bitmap = Camera1Fragment.Rotate(bitmap, 180);
break;
}
await AndroidUtils.WriteBitmapToFile(File.AbsolutePath, bitmap);
}
/// <summary>
/// Rotate the picture taken
/// https://forums.xamarin.com/discussion/5409/photo-being-saved-in-landscape-not-portrait
/// </summary>
/// <param name="path"></param>
/// <param name="width"></param>
/// <param name="height"></param>
/// <returns></returns>
void RotateBitmap(string path, byte[] data)
{
try
{
//using (Android.Graphics.Bitmap picture = Android.Graphics.BitmapFactory.DecodeFile(path))
using (Android.Graphics.Bitmap picture = data.ToBitmap())
using (Android.Graphics.Matrix mtx = new Android.Graphics.Matrix())
{
ExifInterface exif = new ExifInterface(path);
string orientation = exif.GetAttribute(ExifInterface.TagOrientation);
var camOrientation = int.Parse(orientation);
switch (_imageRotation)
{
case 0: // landscape
break;
case 90: // landscape upside down
mtx.PreRotate(270);
break;
case 180: // portrait
mtx.PreRotate(180);
break;
case 270: // portrait upside down
mtx.PreRotate(90);
break;
}
var maxSize = 1024;
double w = picture.Width;
double h = picture.Height;
if (picture.Width > maxSize || picture.Height > maxSize)
{
// set scaled width and height to prevent out of memory exception
double scaleFactor = (double)maxSize / (double)picture.Width;
if (picture.Height > picture.Width)
{
scaleFactor = (double)maxSize / picture.Height;
}
w = picture.Width * scaleFactor;
h = picture.Height * scaleFactor;
}
using (var scaledPiture = Android.Graphics.Bitmap.CreateScaledBitmap(picture, (int)w, (int)h, false))
using (var rotatedPiture = Android.Graphics.Bitmap.CreateBitmap(scaledPiture, 0, 0, (int)w, (int)h, mtx, false))
{
SaveFile(path, rotatedPiture.ToBytes());
}
}
}
catch (Java.Lang.OutOfMemoryError e)
{
e.PrintStackTrace();
throw;
}
}
public static Bitmap LoadImageAndResize(this Context context, string imagesFolder, string imageFileName, int width, int height)
{
if (Environment.ExternalStorageState != Environment.MediaMounted)
{
return(null);
}
var fileName = GetImagesPath(context, imagesFolder) + File.Separator + imageFileName;
BitmapFactory.Options options = new BitmapFactory.Options {
InJustDecodeBounds = true
};
BitmapFactory.DecodeFile(fileName, options);
int outHeight = options.OutHeight;
int outWidth = options.OutWidth;
int inSampleSize = 1;
if (outHeight > height || outWidth > width)
{
inSampleSize = outWidth > outHeight
? outHeight / height
: outWidth / width;
}
options.InSampleSize = inSampleSize;
options.InJustDecodeBounds = false;
options.InPreferredConfig = Bitmap.Config.Rgb565;
Bitmap bm = BitmapFactory.DecodeFile(fileName, options);
Matrix mtx = new Matrix();
ExifInterface exif = new ExifInterface(GetImagesPath(context, imagesFolder) + File.Separator + imageFileName);
string orientation = exif.GetAttribute(ExifInterface.TagOrientation);
switch (orientation)
{
case "6": // portrait
mtx.PreRotate(90);
bm = Bitmap.CreateBitmap(bm, 0, 0, bm.Width, bm.Height, mtx, false);
mtx.Dispose();
mtx = null;
break;
case "1": // landscape
break;
default:
mtx.PreRotate(90);
bm = Bitmap.CreateBitmap(bm, 0, 0, bm.Width, bm.Height, mtx, false);
mtx.Dispose();
mtx = null;
break;
}
return(bm);
}
public static Bitmap LoadandResizeBitmap(this string fileName, int width, int height)
{
// First get teh dimensions of the file on disk
BitmapFactory.Options options = new BitmapFactory.Options
{
InJustDecodeBounds = true
};
BitmapFactory.DecodeFile(fileName, options);
// Next calculate the ratio that we need to resize the image by
// in order to fit the requested dimensions
int outHeight = options.OutHeight;
int outWidth = options.OutWidth;
int inSampleSize = 1;
if (outHeight > height || outWidth > width)
{
inSampleSize = outWidth > outHeight
? outHeight / height
: outWidth / width;
}
// Now load the image and have BitmapFactory resize it
options.InSampleSize = inSampleSize;
options.InJustDecodeBounds = false;
Bitmap resizedBitmap = BitmapFactory.DecodeFile(fileName, options);
// Images are being saved in landscape, so rotate them back to protrait if they
// were taken in portrait
Matrix mtx = new Matrix();
ExifInterface exif = new ExifInterface(fileName);
string orientation = exif.GetAttribute(ExifInterface.TagOrientation);
switch (orientation)
{
case "6": // Portrait
mtx.PreRotate(90);
resizedBitmap = Bitmap.CreateBitmap(resizedBitmap, 0, 0, resizedBitmap.Width,
resizedBitmap.Height, mtx, false);
mtx.Dispose();
mtx = null;
break;
case "1": // Landscape
break;
default:
mtx.PreRotate(90);
resizedBitmap = Bitmap.CreateBitmap(resizedBitmap, 0, 0, resizedBitmap.Width,
resizedBitmap.Height, mtx, false);
mtx.Dispose();
mtx = null;
break;
}
return(resizedBitmap);
}
//public int CheckRotationByExifInterface(string path)
//{
// imageUri = Android.Net.Uri.FromFile(new Java.IO.File(path));
// System.IO.Stream input = Fragment.Context.ContentResolver.OpenInputStream(imageUri);
// var exifInterface = new ExifInterface(input);
// TryGetLocation(exifInterface);
// int orientation = exifInterface.GetAttributeInt(ExifInterface.TagOrientation, ExifInterface.OrientationFlipHorizontal);
// return orientation;
//}
private void TryGetLocation(ExifInterface exifInterface)
{
try
{
imageLat = 0;
imageLong = 0;
var _gps_Latitude = exifInterface.GetAttribute(ExifInterface.TagGpsLatitude);
var _gps_Longitude = exifInterface.GetAttribute(ExifInterface.TagGpsLongitude);
var _gps_LatitudeRef = exifInterface.GetAttribute(ExifInterface.TagGpsLatitudeRef);
var _gps_LongitudeRef = exifInterface.GetAttribute(ExifInterface.TagGpsLongitudeRef);
imageLat = PhotoGpsLocationConverter.CheckAndConvert(_gps_Latitude, _gps_LatitudeRef, true);
imageLong = PhotoGpsLocationConverter.CheckAndConvert(_gps_Longitude, _gps_LongitudeRef, false);
}
catch (Exception ex)
{
System.Diagnostics.Debug.WriteLine("Can't get image location: " + ex.Message);
}
}
public string GetPhotoDate(string path)
{
if (!File.Exists(path))
{
return("0");
}
ExifInterface exif = new ExifInterface(path);
return(exif.GetAttribute(ExifInterface.TagDatetime));
}
private async Task GeoTagPhotoAsync()
{
// see if the photo already contains geo coords
var exif = new ExifInterface(_file.Path);
if (!string.IsNullOrWhiteSpace(exif.GetAttribute(ExifInterface.TagGpsLatitude)))
{
return;
}
RequestCurrentLocation();
var location = await _locationTCS.Task;
try
{
int num1Lat = (int)Math.Floor(location.Latitude);
int num2Lat = (int)Math.Floor((location.Latitude - num1Lat) * 60);
double num3Lat = (location.Latitude - ((double)num1Lat + ((double)num2Lat / 60))) * 3600000;
int num1Lon = (int)Math.Floor(location.Longitude);
int num2Lon = (int)Math.Floor((location.Longitude - num1Lon) * 60);
double num3Lon = (location.Longitude - ((double)num1Lon + ((double)num2Lon / 60))) * 3600000;
exif.SetAttribute(ExifInterface.TagGpsLatitude, num1Lat + "/1," + num2Lat + "/1," + num3Lat + "/1000");
exif.SetAttribute(ExifInterface.TagGpsLongitude, num1Lon + "/1," + num2Lon + "/1," + num3Lon + "/1000");
if (location.Latitude > 0)
{
exif.SetAttribute(ExifInterface.TagGpsLatitudeRef, "N");
}
else
{
exif.SetAttribute(ExifInterface.TagGpsLatitudeRef, "S");
}
if (location.Longitude > 0)
{
exif.SetAttribute(ExifInterface.TagGpsLongitudeRef, "E");
}
else
{
exif.SetAttribute(ExifInterface.TagGpsLongitudeRef, "W");
}
exif.SaveAttributes();
}
catch (Java.IO.IOException)
{
// location will not be available on this image, but continue
}
}
protected override bool[] RunInBackground(string[] urls)
{
string[] val;
bool[] result = new bool[urls.Length + 1];
string[] fileftp = new string[3];
string[] filelocal = new string[3];
DirectoryByFTP(MainActivity.passwd, MainActivity.username, MainActivity.ftppath + "" + App.MyName);
val = ListingByFTP(MainActivity.passwd, MainActivity.username, MainActivity.ftppath + "" + App.MyName);
if ((val[0] == "The remote server returned an error: (500) 500 NLST: Connection timed out\r\n.") || (val[0] == "Other error"))
{
Toast.MakeText(FattyFood.MainActivity.myActivity, "Connection timed out ", ToastLength.Long).Show();
result[0] = false;
return(result);
}
foreach (string url in urls)
{
if (!string.IsNullOrEmpty(url))
{
result[Array.IndexOf(urls, url)] = false;
filelocal = System.IO.Path.GetFileName(url).Split(".");
if (!(val[0] == string.Empty))
{
foreach (string v in val)
{
fileftp = v.Split(".");
if ((!(fileftp[1] == "jpg")) && (filelocal[0] == fileftp[0]) && (!(filelocal[1] == fileftp[1])))
{
RenameFile(url, fileftp[1]);
result[Array.IndexOf(urls, url)] = true;
}
}
}
if (result[Array.IndexOf(urls, url)] == false)
{
using (ExifInterface newexif = new ExifInterface(url))
{
string tag = newexif.GetAttribute(ExifInterface.TagUserComment);
if (!(tag == "Uped"))
{
result[Array.IndexOf(urls, url)] = SendFilesByFTP(MainActivity.passwd, MainActivity.username, url, MainActivity.ftppath + App.MyName + "/" + System.IO.Path.GetFileName(url));
}
if (result[Array.IndexOf(urls, url)] == true)
{
newexif.SetAttribute(ExifInterface.TagUserComment, "Uped");
newexif.SaveAttributes();
}
}
}
}
}
return(result);
}
void SetMissingMetadata(ExifInterface exif, Location location)
{
var exifPos = exif.GetLatLong();
if (exifPos == null && location != null && location.Latitude != null && location.Longitude != null)
{
exif.SetLatLong((double)location.Latitude, (double)location.Longitude);
}
if (string.IsNullOrEmpty(exif.GetAttribute(ExifInterface.TagDatetime)))
{
exif.SetAttribute(ExifInterface.TagDatetime, DateTime.Now.ToString("yyyy:MM:dd hh:mm:ss"));
exif.SetAttribute(ExifInterface.TagDatetimeOriginal, DateTime.Now.ToString("yyyy:MM:dd hh:mm:ss"));
}
if (string.IsNullOrEmpty(exif.GetAttribute(ExifInterface.TagMake)))
{
exif.SetAttribute(ExifInterface.TagMake, Build.Manufacturer);
}
if (string.IsNullOrEmpty(exif.GetAttribute(ExifInterface.TagModel)))
{
exif.SetAttribute(ExifInterface.TagModel, Build.Model);
}
}
void UpdateMetadata(ref MediaFile media, ExifInterface exif)
{
var dateString = exif.GetAttribute(ExifInterface.TagDatetime);
if (dateString != null)
{
media.MediaTakenAt = DateTime.ParseExact(dateString, "yyyy:MM:dd HH:mm:ss", CultureInfo.InvariantCulture);
}
else
{
media.MediaTakenAt = null;
}
media.Orientation = exif.GetAttributeInt(ExifInterface.TagOrientation, ExifInterface.OrientationUndefined);
var latString = exif.GetAttribute(ExifInterface.TagGpsLatitude);
media.Latitude = ParseRational(latString);
media.LatitudeRef = exif.GetAttribute(ExifInterface.TagGpsLatitudeRef);
var longString = exif.GetAttribute(ExifInterface.TagGpsLongitude);
media.Longitude = ParseRational(longString);
media.LongitudeRef = exif.GetAttribute(ExifInterface.TagGpsLongitudeRef);
}
private void OpenPhoto_Click(object sender, EventArgs e)
{
ExifInterface newexif; //????????
string tag;
foreach (Photo url in mPhotoAlbum)
{
using (newexif = new ExifInterface(url.mCaption))
{
tag = newexif.GetAttribute(ExifInterface.TagUserComment);
newexif.SetAttribute(ExifInterface.TagUserComment, "");
newexif.SaveAttributes();
}
}
}
public static Bitmap RotateImageIfRequired(Bitmap img, string url)
{
var ei = new ExifInterface(url);
var orientation = ei.GetAttribute(ExifInterface.TagOrientation);
if (string.IsNullOrEmpty(orientation) || orientation == "0")
{
return(img);
}
var matrix = GetMatrixOrientation(ei, 0);
var rotated = Bitmap.CreateBitmap(img, 0, 0, img.Width, img.Height, matrix, true);
img.Recycle();
img.Dispose();
return(rotated);
}
private static Matrix GetMatrixOrientation(ExifInterface sourceExif, float degrees)
{
var matrix = new Matrix();
var orientation = sourceExif.GetAttribute(ExifInterface.TagOrientation);
switch (orientation)
{
case "1": //Horizontal(normal)
matrix.PostRotate(degrees);
break;
case "2": //Mirror horizontal
matrix.SetScale(-1, 1);
matrix.PostRotate(degrees);
break;
case "3": //Rotate 180
matrix.PostRotate(180 + degrees);
break;
case "4": //Mirror vertical
matrix.PostRotate(180 + degrees);
matrix.SetScale(-1, 1);
break;
case "5": //Mirror horizontal and rotate 270 CW
matrix.PostScale(-1, 1);
matrix.SetRotate(270 + degrees);
break;
case "6": //Rotate 90 CW
matrix.SetRotate(90 + degrees);
break;
case "7": //Mirror horizontal and rotate 90 CW
matrix.PostScale(-1, 1);
matrix.SetRotate(90 + degrees);
break;
case "8": //Rotate 270 CW
matrix.SetRotate(270 + degrees);
break;
}
return(matrix);
}
public static Location ReadLocation(this ExifInterface exif)
{
var pos = new float[2];
if (exif.GetLatLong(pos))
{
var date = exif.GetAttribute(ExifInterface.TagDatetime);
var time = ExifFormat.Parse(date).Time;
return(new Location("exif")
{
Latitude = pos[0],
Longitude = pos[1],
Time = time
});
}
return(null);
}
public static Task <string> ResizeAndCompressImage(string filePath, int maxDimention, int quality)
{
ExifInterface exifInterface = new ExifInterface(filePath);
string [] values = new string[tags.Length];
for (int i = 0; i < tags.Length; i++)
{
values [i] = exifInterface.GetAttribute(tags [i]);
}
var task = Task.Run <string>(() =>
{
var extPath = Android.OS.Environment.ExternalStorageDirectory.AbsolutePath;
var filePathOut = System.IO.Path.Combine(extPath, "g4m", "thumb", Guid.NewGuid().ToString());
var dirPath = System.IO.Path.GetDirectoryName(filePathOut);
if (!Directory.Exists(dirPath))
{
Directory.CreateDirectory(dirPath);
}
//File.Copy(filePath, filePathOut);
var fManager = new FileSaveLoad();
Bitmap bmp = LoadAndResizeBitmap(filePath, maxDimention, maxDimention);
bmp = GetPictureWithRotation(bmp, exifInterface);
var tStream = fManager.OpenFile(filePathOut);
bmp.Compress(Bitmap.CompressFormat.Jpeg, quality, tStream);
tStream.Flush();
tStream.Close();
ExifInterface innerExif = new ExifInterface(filePathOut);
for (int i = 0; i < tags.Length; i++)
{
if (!string.IsNullOrEmpty(values[i]))
{
innerExif.SetAttribute(tags[i], values[i]);
}
}
innerExif.SaveAttributes();
return(filePathOut);
});
return(task);
}
/// <summary>
/// Obtains the EXIF data of the given URI.
/// </summary>
/// <param name="oldUri">The URI you wish to get the EXIF data</param>
/// <param name="context">Your current context (Activity most likely)</param>
/// <returns></returns>
public static Dictionary <string, string> CopyExif(Android.Net.Uri oldUri, Context context)
{
//somewhere around here we get the exif data
//photofile is the temp image
Dictionary <string, string> ExifDict = new Dictionary <string, string>();
var stream = context.ContentResolver.OpenInputStream(oldUri);
ExifInterface oldExif = new ExifInterface(stream);
foreach (string s in attributes)
{
string value = oldExif.GetAttribute(s);
if (value != null)
{
ExifDict.Add(s, value);
}
}
return(ExifDict);
}
public void OnPictureTaken(byte[] data, Camera camera)
{
string id = null;
if (((CameraActivity)Activity).activityId != -1)
{
id = ((CameraActivity)Activity).activityId.ToString();
}
string filename = Path.Combine(
Common.LocalData.Storage.GetCacheFolder(id),
DateTime.Now.ToString("MM-dd-yyyy-HH-mm-ss-fff", CultureInfo.InvariantCulture) + ".jpg");
File.WriteAllBytes(filename, data);
global::Android.Graphics.Bitmap bitmap = global::Android.Graphics.BitmapFactory.DecodeFile(filename);
ExifInterface exif = new ExifInterface(filename);
string orientation = exif.GetAttribute(ExifInterface.TagOrientation);
switch (orientation)
{
case "6":
bitmap = Rotate(bitmap, 90);
break;
case "8":
bitmap = Rotate(bitmap, 270);
break;
case "3":
bitmap = Rotate(bitmap, 180);
break;
}
var suppress = AndroidUtils.WriteBitmapToFile(filename, bitmap);
OnPause();
((CameraActivity)Activity).ReturnWithFile(filename);
}
//Background image
public void LoadImage(string path, bool IsInResources, Abstractions.Scaling Scaling = Abstractions.Scaling.Absolute_None)
{
backgroundScaling = Scaling;
if (IsInResources)
{
string file = path.Split('.')[0];
var id = Resources.GetIdentifier(file.ToLower(), "drawable", Context.PackageName);
backgroundBitmap = BitmapFactory.DecodeResource(Resources, id);
}
else
{
backgroundBitmap = BitmapFactory.DecodeFile(path);
ExifInterface exif = new ExifInterface(path);
var orientationAttribute = exif.GetAttribute(ExifInterface.TagOrientation);
Android.Media.Orientation orientationRotate = (Android.Media.Orientation) int.Parse(orientationAttribute);
int imageRotation = 0;
switch (orientationRotate)
{
case Android.Media.Orientation.Rotate90:
imageRotation = 90;
break;
case Android.Media.Orientation.Rotate180:
imageRotation = 180;
break;
case Android.Media.Orientation.Rotate270:
imageRotation = 270;
break;
}
imageSize.X = backgroundBitmap.Width;
imageSize.Y = backgroundBitmap.Height;
orientation = imageRotation;
backgroundBitmap = RotateBitmap(backgroundBitmap, imageRotation);
}
}
public static Bitmap LoadImage(this Context context, string imagesFolder, string imageFileName, BitmapFactory.Options options = null)
{
if (Environment.ExternalStorageState != Environment.MediaMounted)
{
return(null);
}
if (options != null)
{
Bitmap bm = BitmapFactory.DecodeFile(GetImagesPath(context, imagesFolder) + File.Separator + imageFileName, options);
Matrix mtx = new Matrix();
ExifInterface exif = new ExifInterface(GetImagesPath(context, imagesFolder) + File.Separator + imageFileName);
string orientation = exif.GetAttribute(ExifInterface.TagOrientation);
switch (orientation)
{
case "6": // portrait
mtx.PreRotate(90);
bm = Bitmap.CreateBitmap(bm, 0, 0, bm.Width, bm.Height, mtx, false);
mtx.Dispose();
mtx = null;
break;
case "1": // landscape
break;
default:
mtx.PreRotate(90);
bm = Bitmap.CreateBitmap(bm, 0, 0, bm.Width, bm.Height, mtx, false);
mtx.Dispose();
mtx = null;
break;
}
return(bm);
}
return(BitmapFactory.DecodeFile(context.GetImagesPath(imagesFolder) + File.Separator + imageFileName));
}
protected override void OnActivityResult(int requestCode, Android.App.Result resultCode, Intent data)
{
base.OnActivityResult(requestCode, resultCode, data);
this.RequestedOrientation = Android.Content.PM.ScreenOrientation.Portrait;
if (requestCode == 0)
{
switch (resultCode)
{
case Android.App.Result.Ok:
if (imagefile.Exists())
{
//Salvar imagem na galeria
Intent mediaScanIntent = new Intent(Intent.ActionMediaScannerScanFile);
contentUri = Android.Net.Uri.FromFile(imagefile);
mediaScanIntent.SetData(contentUri);
SendBroadcast(mediaScanIntent);
//Converter image para byte
Java.Net.URI juri = new Java.Net.URI(contentUri.ToString());
ByteHelper helper = new ByteHelper();
bytes = helper.imageToByteArray(juri, bytes);
System.IO.Stream stream = ContentResolver.OpenInputStream(contentUri);
imageView.SetImageBitmap(BitmapFactory.DecodeStream(stream));
BitmapFactory.Options options = new BitmapFactory.Options {
InJustDecodeBounds = true
};
BitmapFactory.DecodeFile(contentUri.ToString(), options);
//options.InJustDecodeBounds = false;
Matrix mtx = new Matrix();
ExifInterface exif = new ExifInterface(contentUri.ToString());
string orientation = exif.GetAttribute(ExifInterface.TagOrientation);
switch (orientation)
{
case "6":
mtx.PreRotate(90);
mtx.Dispose();
mtx = null;
break;
case "1":
break;
default:
mtx.PreRotate(90);
mtx.Dispose();
mtx = null;
break;
}
}
else
{
Toast.MakeText(this, "O arquivo não foi salvo devido à um erro", ToastLength.Short).Show();
}
break;
case Result.FirstUser:
string Lat = data.GetStringExtra("Lat");
string Long = data.GetStringExtra("Lon");
string mensagem = data.GetStringExtra("mensagem");
string endereco = data.GetStringExtra("Endereco");
if ((Lat == null || Lat == "") && (Long == null || Long == ""))
{
Toast.MakeText(this, "Endereço não encontrado. Verifique se seu GPS está ativado e tente novamente", ToastLength.Long).Show();
txtGeolocalizacao.Visibility = ViewStates.Visible;
txtGeolocalizacao.Text = "";
checkBoxGeolocalizacao.Checked = false;
}
else
{
txtGeolocalizacao.Visibility = ViewStates.Visible;
txtGeolocalizacao.Text = Lat + ", " + Long;
}
break;
case Result.Canceled:
break;
default:
break;
}
}
}
Bitmap loadAndResizeBitmap(string filePath)
{
BitmapFactory.Options options = new BitmapFactory.Options {
InJustDecodeBounds = true
};
BitmapFactory.DecodeFile(filePath, options);
int REQUIRED_SIZE = 100;
int width_tmp = options.OutWidth, height_tmp = options.OutHeight;
int scale = 4;
while (true)
{
if (width_tmp / 2 < REQUIRED_SIZE || height_tmp / 2 < REQUIRED_SIZE)
{
break;
}
width_tmp /= 2;
height_tmp /= 2;
scale++;
}
options.InSampleSize = scale;
options.InJustDecodeBounds = false;
Bitmap resizedBitmap = BitmapFactory.DecodeFile(filePath, options);
ExifInterface exif = null;
try
{
exif = new ExifInterface(filePath);
string orientation = exif.GetAttribute(ExifInterface.TagOrientation);
Matrix matrix = new Matrix();
switch (orientation)
{
case "1": // landscape
break;
case "3":
matrix.PreRotate(180);
resizedBitmap = Bitmap.CreateBitmap(resizedBitmap, 0, 0, resizedBitmap.Width, resizedBitmap.Height, matrix, false);
matrix.Dispose();
matrix = null;
break;
case "4":
matrix.PreRotate(180);
resizedBitmap = Bitmap.CreateBitmap(resizedBitmap, 0, 0, resizedBitmap.Width, resizedBitmap.Height, matrix, false);
matrix.Dispose();
matrix = null;
break;
case "5":
matrix.PreRotate(90);
resizedBitmap = Bitmap.CreateBitmap(resizedBitmap, 0, 0, resizedBitmap.Width, resizedBitmap.Height, matrix, false);
matrix.Dispose();
matrix = null;
break;
case "6": // portrait
matrix.PreRotate(90);
resizedBitmap = Bitmap.CreateBitmap(resizedBitmap, 0, 0, resizedBitmap.Width, resizedBitmap.Height, matrix, false);
matrix.Dispose();
matrix = null;
break;
case "7":
matrix.PreRotate(-90);
resizedBitmap = Bitmap.CreateBitmap(resizedBitmap, 0, 0, resizedBitmap.Width, resizedBitmap.Height, matrix, false);
matrix.Dispose();
matrix = null;
break;
case "8":
matrix.PreRotate(-90);
resizedBitmap = Bitmap.CreateBitmap(resizedBitmap, 0, 0, resizedBitmap.Width, resizedBitmap.Height, matrix, false);
matrix.Dispose();
matrix = null;
break;
}
return(resizedBitmap);
}
catch (IOException ex)
{
Console.WriteLine("An exception was thrown when reading exif from media file...:" + ex.Message);
return(null);
}
}
public static void CopyExif(ExifInterface source, ExifInterface destination, Dictionary <string, string> replace)
{
var build = (int)Build.VERSION.SdkInt;
var fields = typeof(ExifInterface).GetFields();
foreach (var field in fields)
{
var atr = field.GetCustomAttribute <Android.Runtime.RegisterAttribute>();
if (build >= atr?.ApiSince)
{
var name = (string)field.GetValue(null);
var aBuf = replace != null && replace.ContainsKey(name) ? replace[name] : source.GetAttribute(name);
if (!string.IsNullOrEmpty(aBuf))
{
destination.SetAttribute(name, aBuf);
}
}
}
destination.SaveAttributes();
}
private void SetupDrawingCanvas()
{
path = XForm.GetValue(Binding.nodeset);
if (!string.IsNullOrEmpty(path))
{
Bitmap bitmap = BitmapFactory.DecodeFile(path);
//grab the exif note if there is one
ExifInterface exifData = new ExifInterface(path);
string note = exifData.GetAttribute(ExifInterface.TagImageDescription);
if (note != null)
{
EditExif.Text = note;
}
//grab orientation if there is one, some images from the net may not even have it
int orientation = exifData.GetAttributeInt(Android.Media.ExifInterface.TagOrientation, 1);
switch (orientation)
{
case 6:
bitmap = BitmapHelpers.RotateBitmap(bitmap, 90f);
break;
case 3:
bitmap = BitmapHelpers.RotateBitmap(bitmap, 180f);
break;
case 8:
bitmap = BitmapHelpers.RotateBitmap(bitmap, 270f);
break;
}
Dims = new int[] { bitmap.Width, bitmap.Height };
//this one liner does all, gets the lower of the two to determine what to scale it by
decimal scale = Math.Min(Decimal.Divide(MainCanvas.Width, Dims[0]), Decimal.Divide(MainCanvas.Height, Dims[1]));
int width = (int)(Dims[0] * scale);
int height = (int)(Dims[1] * scale);
//background image
if (Control.appearance.ToLower() == "annotate" || Control.appearance.ToLower() == "textannotate")
{
bitmap = Bitmap.CreateScaledBitmap(bitmap, width, height, true);
BackgroundImage.SetImageBitmap(bitmap);
}
//canvas image
if (TempBitmap != null)
{
canvasBitmap = Bitmap.CreateScaledBitmap(TempBitmap, width, height, true);
}
else
{
canvasBitmap = Bitmap.CreateBitmap(width, height, Bitmap.Config.Argb8888);
}
if (dv == null)
{
dv = new DrawingView(this, canvasBitmap, 10, BackgroundImage);
}
if (Control.appearance.ToLower() != "signature")
{
SetupEvents();
}
var layoutParams = new RelativeLayout.LayoutParams(width, height);
layoutParams.AddRule(LayoutRules.CenterInParent);
dv.LayoutParameters = layoutParams;
MainCanvas.AddView(dv);
GC.Collect();
}
else if (Control.appearance.ToLower() == "signature" || Control.appearance.ToLower() == "draw")
{
int width = MainCanvas.Width;
int height = MainCanvas.Height;
//canvas image
if (TempBitmap != null)
{
canvasBitmap = Bitmap.CreateScaledBitmap(TempBitmap, width, height, true);
}
else
{
canvasBitmap = Bitmap.CreateBitmap(width, height, Bitmap.Config.Argb8888);
}
if (dv == null)
{
dv = new DrawingView(this, canvasBitmap, 10, BackgroundImage);
}
if (Control.appearance.ToLower() != "signature")
{
SetupEvents();
}
var layoutParams = new RelativeLayout.LayoutParams(width, height);
layoutParams.AddRule(LayoutRules.CenterInParent);
dv.LayoutParameters = layoutParams;
MainCanvas.AddView(dv);
GC.Collect();
}
}
