iOS iOS7以上设置leftBarButtonItem后滑动返回实效

在pushViewController之后加入如下代码：

[self.navigationController pushViewController:viewController animated:YES];

// 开启iOS7的滑动返回效果

if ([self.navigationController respondsToSelector:@selector(interactivePopGestureRecognizer)])

{

    self.navigationController.interactivePopGestureRecognizer.delegate =nil;

}

原文链接：http://blog.csdn.net/zhaoxy_thu/article/details/15811189