Image Orientation Lost During Compression Swift ios -

i use following function create thumbnail of image:

func scaleimage(image: uiimage, tosize newsize: cgsize) -> (uiimage) { let newrect = cgrectintegral(cgrectmake(0,0, newsize.width, newsize.height)) uigraphicsbeginimagecontextwithoptions(newsize, false, 0) let context = uigraphicsgetcurrentcontext() cgcontextsetinterpolationquality(context, .high) let flipvertical = cgaffinetransformmake(1, 0, 0, -1, 0, newsize.height) cgcontextconcatctm(context, flipvertical) cgcontextdrawimage(context, newrect, image.cgimage) let newimage = uiimage(cgimage: cgbitmapcontextcreateimage(context)!) uigraphicsendimagecontext() return newimage } 

i call in following way :

let imagethumb = self.scaleimage(currimage, tosize: cgsizemake(currimage.size.width/4, currimage.size.height/4)) 

i encode imagethumb using following function :

func compressimage(image:uiimage) -> nsdata {     // reducing file size 10th      var actualheight : cgfloat = image.size.height     var actualwidth : cgfloat = image.size.width     let maxheight : cgfloat = 1136.0     let maxwidth : cgfloat = 640.0     var imgratio : cgfloat = actualwidth/actualheight     let maxratio : cgfloat = maxwidth/maxheight     var compressionquality : cgfloat = 0.5      if (actualheight > maxheight || actualwidth > maxwidth){         if(imgratio < maxratio){             //adjust width according maxheight             imgratio = maxheight / actualheight;             actualwidth = imgratio * actualwidth;             actualheight = maxheight;         }         else if(imgratio > maxratio){             //adjust height according maxwidth             imgratio = maxwidth / actualwidth;             actualheight = imgratio * actualheight;             actualwidth = maxwidth;         }         else{             actualheight = maxheight;             actualwidth = maxwidth;             compressionquality = 1;         }     }      let rect = cgrectmake(0.0, 0.0, actualwidth, actualheight);     uigraphicsbeginimagecontext(rect.size);     image.drawinrect(rect)     let img = uigraphicsgetimagefromcurrentimagecontext();     let imagedata = uiimagejpegrepresentation(img, compressionquality);     uigraphicsendimagecontext();      return imagedata!; } 

finally, encode base64 , store in database. retrieve it, decode , display in imageview. issue photos take in portrait mode end being displayed in landscape. i'm not sure along way orientation lost.