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];
}
