模态窗口错误 Application tried to present modally an active controller

先判断presentedViewController为空时，再presentModalViewController

if (self.presentedViewController == nil)

   {

      [self presentModalViewController:myController animated:YES];

   }

模态窗口错误 Application tried to present modally an active controller,布布扣,bubuko.com

原文：http://blog.csdn.net/sqc3375177/article/details/22172859