如何在UINavigationController中恢复后退按钮功能？

Question

我创建了自己的leftBarButtonItem:

UIBarButtonItem* homeButton = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemBookmarks 
                                                                                    target:self 
                                                                                    action:@selector(homeButtonClicked:)];

self.navigationItem.leftBarButtonItem = homeButton;

如何以编程方式恢复原始后退按钮功能？

Answer 1

self.navigationItem.leftBarButtonItem = self.navigationItem.backBarButtonItem;

Answer 2

后退按钮将调用UINavigationControllers popViewController，因此您可以在homeButtonClicked:选择器上复制它。