iphone - How to print photo in iOS? -


i need print photo using airprinter , coded have 1 problem photo size. after print photo, can see output photo size large - correctly want print a6(4*6 inch) photo.

i use canon mg3260 air printer.

please me if can solve problem.

  • screenshot https://www.dropbox.com/s/1f6wa0waao56zqk/img_0532.jpg

  • code

    -(void)printphotowithimage:(uiimage *)image {  nsdata *mydata = uiimagejpegrepresentation(image, 1.f); uiprintinteractioncontroller *pic = [uiprintinteractioncontroller sharedprintcontroller];  if (pic && [uiprintinteractioncontroller canprintdata:mydata]) {  pic.delegate = self; uiprintinfo *pinfo = [uiprintinfo printinfo]; pinfo.outputtype = uiprintinfooutputphoto; pinfo.jobname = @"my photo"; pinfo.duplex = uiprintinfoduplexlongedge;  pic.printinfo = pinfo; pic.showspagerange = yes; pic.printingitem = mydata;  pic.printformatter = format; [format release];  void(^completionhandler)(uiprintinteractioncontroller *, bool, nserror *) = ^(uiprintinteractioncontroller *print, bool completed, nserror *error) {  [self resignfirstresponder];  if (!completed && error) {     nslog(@"--- print error! ---"); }  };     [pic presentfromrect:cgrectmake((self.view.bounds.size.width - 64) + 27, (self.view.bounds.size.height - 16) + 55, 0, 0) inview:self.view animated:yes completionhandler:completionhandler];

    }

     - (uiprintpaper *)printinteractioncontroller:(uiprintinteractioncontroller *)printinteractioncontroller choosepaper:(nsarray *)paperlist {   cgsize pagesize = cgsizemake(6 * 72, 4 * 72); return [uiprintpaper bestpaperforpagesize:pagesize withpapersfromarray:paperlist];  }

scale image first , use print

+ (uiimage *)imagewithimage:(uiimage *)image scaledtosize:(cgsize)newsize {     //uigraphicsbeginimagecontext(newsize);     uigraphicsbeginimagecontextwithoptions(newsize, no, 0.0);     [image drawinrect:cgrectmake(0, 0, newsize.width, newsize.height)];     uiimage *newimage = uigraphicsgetimagefromcurrentimagecontext();         uigraphicsendimagecontext();     return newimage; }

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