ios - dismiss a popup view controller -


i implemented apple pay app. when click on apple pay button, standard pay pop view controller appears. in order dismiss it, can press cancel button want able dismiss pop-up view clicking superview. 

    func alertclose(gesture: uitapgesturerecognizer) {         self.dismiss(animated: true, completion: nil)         print("it working")     }       @ibaction func payapple(_ sender: any) {              let paymentviewcontroller = pkpaymentauthorizationviewcontroller(paymentrequest: request)             paymentviewcontroller.delegate = self              self.present(paymentviewcontroller, animated: true, completion: {                 paymentviewcontroller.view.superview?.isuserinteractionenabled = true                 paymentviewcontroller.view.superview?.addgesturerecognizer(uitapgesturerecognizer(target: self, action: #selector(self.alertclose(gesture:))))              }) }

but have implemented above not working. i'm not sure doing wrong. when click superview apple pay pop doesn't dismiss.


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