ios - Wrong paper size in AirPrint -

in app, different photo sizes can printed. working fine, ios 8 paper size letter/a4 if print dialog display e.g.. 5"x7". if user selects paper size again, paper size changes e.g. 5"x7".

does have same problem?

is there workaround?

here code:

 - (uiprintpaper *)printinteractioncontroller:(uiprintinteractioncontroller *)printinteractioncontroller choosepaper:(nsarray *)paperlist   {     cgsize pagesize = ((pppage *)[document.pages objectatindex:0]).papersize;      if (pagesize.width > pagesize.height) {         float w = pagesize.width;         pagesize.width = pagesize.height;         pagesize.height = w;     }     nslog(@"printinteractioncontroller:choosepaper: needed pagesize = (%.1f,%.1f)",pagesize.width,pagesize.height);     uiprintpaper *retpaper = [uiprintpaper bestpaperforpagesize:pagesize withpapersfromarray:paperlist];     nslog(@"printinteractioncontroller:choosepaper: chosen uiprintpaper = (%.1f,%.1f)",retpaper.papersize.width,retpaper.papersize.height);      return retpaper; } 

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and log output:

2015-06-19 12:22:53.474 photoprint[5955:1225053] printinteractioncontroller:choosepaper: needed pagesize = (288.0,432.0) 2015-06-19 12:22:54.118 photoprint[5955:1225053] printinteractioncontroller:choosepaper: chosen uiprintpaper = (612.0,792.0) 2015-06-19 12:22:54.118 photoprint[5955:1225053] -[pkpaperlist matchedpaper:preferborderless:withduplexmode:didmatch:] papertomatch= result= matchtype=0 2015-06-19 12:23:06.351 photoprint[5955:1225053]

--> wrong paper size letter selected!

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now select paper again:

printinteractioncontroller:choosepaper: needed pagesize = (288.0,432.0) 2015-06-19 12:23:14.860 photoprint[5955:1225053] printinteractioncontroller:choosepaper: chosen uiprintpaper = (360.0,504.0) 2015-06-19 12:23:14.860 photoprint[5955:1225053] -[pkpaperlist matchedpaper:preferborderless:withduplexmode:didmatch:] papertomatch= result= matchtype=0

--> time correct paper size.

your code appears swapping width , height -- seems attempting change orientation of print. that's not way it: set orientation, see uiprintinfo.orientation

as why different results, i'm not sure assume bestpaperforpage size can affected selected printer's offline/online state (ie. if call bestpaperforpage before printer has ever been contacted, default a4 unless have chosen photo print type). if want default 4x6 use uiprintinfooutputphoto on uiprintinfo