自定义导航控制器的后退按钮

Question

我想在导航栏的左侧有两个按钮，一个是常规后退按钮，另一个是UIBarButtonItem。但是我只能用它来替换默认的后退按钮。我在互联网上尝试过很多代码示例，但无法使用。请帮忙

Answer 1

不要这样做。它违反了Apple提出的UI指南。 See the paragraph right before figure 6-6 of the iPhone HIG

Answer 2

据我所知，（目前）UIBarButtonItems两侧UINavigationBar都不可能。{/ p>

Answer 3

是的，你可以通过 -

来做到这一点

UIButton *backBtn = [UIButton buttonWithType:UIButtonTypeCustom];  
UIImage *homeImage = [UIImage imageNamed:@"YOUR_IMAGE.png"];  
[backBtn setBackgroundImage:homeImage forState:UIControlStateNormal];  
[backBtn addTarget:self action:@selector(YOUR_ACTION)  
forControlEvents:UIControlEventTouchUpInside];  
backBtn.frame = CGRectMake(0, 0, 69, 26);  
UIBarButtonItem *button1 = [[UIBarButtonItem alloc] initWithCustomView:backBtn];
[[self navigationItem] setLeftBarButtonItem:button1];
[button1 release];
button1 = nil;