1、问题描述：

由于快速多次点击H5中的下拉选择菜单，导致APP崩溃，xcode日志输出面板中输出：

ErrorName:NSGenericException

ErrorReason:UIPopoverPresentationController (<UIPopoverPresentationController: 0x42b09980>) should have a non-nil sourceView or barButtonItem set before the presentation occurs.

ErrorDesc:UIPopoverPresentationController (<UIPopoverPresentationController: 0x42b09980>) should have a non-nil sourceView or barButtonItem set before the presentation occurs.

2、解决方法

在控制器中添加如下代码即可解决

-(void)presentViewController:(UIViewController*)viewControllerToPresent animated:(BOOL)flag completion:(void(^)(void))completion

{

    if ([[[UIDevice currentDevice] systemVersion] floatValue]<9.0) 

    {

       if (viewControllerToPresent.popoverPresentationController && !viewControllerToPresent.popoverPresentationController.sourceView)

        {

            return;

        }

    }

[superpresentViewController:viewControllerToPresentanimated:flagcompletion:completion];

}