public static Bitmap LoadAndResizeBitmap(this string fileName, int width, int height)
{
// First we get the the dimensions of the file on disk
BitmapFactory.Options options = new BitmapFactory.Options {
InJustDecodeBounds = true
};
BitmapFactory.DecodeFile(fileName, 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 > height || outWidth > width)
{
inSampleSize = outWidth > outHeight
? outHeight / height
: outWidth / width;
}
// Now we will load the image and have BitmapFactory resize it for us.
options.InSampleSize = inSampleSize;
options.InJustDecodeBounds = false;
Bitmap resizedBitmap = BitmapFactory.DecodeFile(fileName, options);
// Images are being saved in landscape, so rotate them back to portrait if they were taken in portrait
Matrix mtx = new Matrix();
Android.Media.ExifInterface exif = new Android.Media.ExifInterface(fileName);
Android.Media.Orientation orientation = (Android.Media.Orientation)exif.GetAttributeInt(Android.Media.ExifInterface.TagOrientation, (int)Android.Media.Orientation.Undefined);
switch (orientation)
{
case Android.Media.Orientation.Rotate90: // portrait
mtx.PreRotate(90);
resizedBitmap = Bitmap.CreateBitmap(resizedBitmap, 0, 0, resizedBitmap.Width, resizedBitmap.Height, mtx, false);
mtx.Dispose();
mtx = null;
break;
case Android.Media.Orientation.FlipHorizontal: // 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 void MyCropImage(Bitmap bitmap, Android.Net.Uri uri)
{
string path = "";
int rotation = 0;
try
{
if (activity.HasAccess(Manifest.Permission.ReadExternalStorage, PermissionRequestCode.Storage, "Grant accesss to ensure correct image orientation"))
{
path = GetPathToImage(uri);
}
Android.Media.ExifInterface exif = new Android.Media.ExifInterface(path);
Android.Media.Orientation orientation = (Android.Media.Orientation)exif.GetAttributeInt(Android.Media.ExifInterface.TagOrientation, 0);
switch (orientation)
{
case Android.Media.Orientation.Rotate90: rotation = 90; break;
case Android.Media.Orientation.Rotate180: rotation = 180; break;
case Android.Media.Orientation.Rotate270: rotation = 270; break;
default: rotation = 0; break;
}
}
catch (Exception ex) { ex.Log(); }
using (bitmap)
using (Matrix matrix = new Matrix())
{
matrix.PreRotate(rotation);
int width1 = bitmap.Width;
int height1 = bitmap.Height;
int diffX = 0, diffY = 0;
if (width1 > height1)
{
diffX = (width1 - height1) / 2;
width1 = height1;
}
else
{
diffY = (height1 - width1) / 2;
height1 = width1;
}
croppedBitmap = Bitmap.CreateBitmap(bitmap, diffX, diffY, width1, height1, matrix, true);
croppedBitmap = Bitmap.CreateScaledBitmap(croppedBitmap, 250, 250, true);
imgView.SetImageBitmap(croppedBitmap);
}
}