这是一个ViewControllerApush a ViewControllerB,并且在 theViewControllerB中leftBarButtonItem设置如下:
self.navigationItem.leftBarButtonItem = [[UIBarButtonItem alloc] initWithTitle:@"Back" style:UIBarButtonItemStylePlain target:self action:@selector(backBtnClicked:)];
设置后leftBarButtonItem,后退滑动手势不起作用。是否可以保持滑动手势?