本文主要是介绍IOS UINavigationBar 自定义返回按钮，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！
很多时候我们使用navigationController时由于上一个navigationController.title的字符串太长，而导致下一个界面的返回按钮变的很长也很难看，为了美观我们我们可以把返回按钮的title改为back，或者是用自定义的图片。1.把返回按钮的title改为back：这里要特别说明一下，需要在上一个viewController里面写上以下代码。若是在当前viewController中无论你是用self.navigationItem.leftBarButtonItem.title = @"back"; 还是用self.navigationItem.backBarButtonItem.title = @"back"; 都不会修改返回按钮的title。代码如下：
- (void)back:(id)sender {[self.navigationController popViewControllerAnimated:YES];
}// The designated initializer. Override if you create the controller programmatically and want to perform customization that is not appropriate for viewDidLoad.
-(id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil {
if (self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil]) {
// 下一个界面的返回按钮
UIBarButtonItem *temporaryBarButtonItem = [[UIBarButtonItem alloc] init];
temporaryBarButtonItem.title = @"back";
temporaryBarButtonItem.target = self;
temporaryBarButtonItem.action = @selector(back:);
self.navigationItem.backBarButtonItem = temporaryBarButtonItem;
[temporaryBarButtonItem release];
}
return self;
}.用自定义的图片修改返回按钮：
-(IBAction)backAction{[self.navigationController popViewControllerAnimated:YES];
}// The designated initializer. Override if you create the controller programmatically and want to perform customization that is not appropriate for viewDidLoad.
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil {if (self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil]) {// Custom initializationUIButton *backButton = [UIButton buttonWithType:UIButtonTypeCustom];backButton.frame = CGRectMake(0.0, 0.0, 40.0, 27.0);[backButton setImage:[UIImage imageNamed:@"Btn_Back_Off.png"] forState:UIControlStateNormal];[backButton setImage:[UIImage imageNamed:@"Btn_Back_On.png"] forState:UIControlStateSelected];[backButton addTarget:self action:@selector(backAction) forControlEvents:UIControlEventTouchUpInside];UIBarButtonItem *temporaryBarButtonItem = [[UIBarButtonItem alloc] initWithCustomView:backButton];temporaryBarButtonItem.style = UIBarButtonItemStylePlain;self.navigationItem.leftBarButtonItem=temporaryBarButtonItem;
[temporaryBarButtonItem release];
}
return self;
}
原文地址： http://blog.csdn.net/jinglijun/article/details/7001356
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