ios - Swift: Printing without alert box -

i use following codes printing in app:

    init() {     self.printinfo.outputtype = uiprintinfooutputtype.photo     self.printinfo.orientation = uiprintinfoorientation.landscape     self.printcontroller.printinfo = self.printinfo     self.printer = uiprinter(url: url(string: printip)!)     // printip string give internal ip of printer     debugprint(printip)   }      func print(image: uiimage) -> bool {     self.printcontroller.printingitem = image     printcontroller.print(to: printer, completionhandler: {(controller, success, error) -> void in       if success {         debugprint("printing completed.")       } else {         debugprint("printing failed.")       }     })     return true   } 

it can print successfully. however, when function triggered, there alert box indicating contacting printer, , printing. there method avoid pop of alert box? want printing done @ without showing on screen interfere user experience (i want play movie when printer working @ back).

thanks.

from ios 8 there way print without presentation of printing ui. instead of presenting ui each time user presses print button, can provide way users select printer somewhere in app easy-to-use uiprinterpickercontroller. accepts optional uiprinter instance in constructor pre-selection, uses same presentation options explained above, , has completion handler when user has selected printer:

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swift 3

let printerpicker = uiprinterpickercontroller(initiallyselectedprinter: savedprinter) printerpicker.present(animated: true) {     (printerpicker, userdidselect, error) in      if userdidselect {         self.savedprinter = printerpicker.selectedprinter     } } 

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now can tell uiprintinteractioncontroller print directly calling printtoprinter(:completionhandler:) saved printer instead of using 1 of present... methods.

source:- http://nshipster.com/uiprintinteractioncontroller/