标签：
xcode：6.3.2
ios8.3
介绍：在平时项目开发中，UINavigationController的使用非常广泛，很多优秀的APP都采用了导航栏，导航栏对于视图控制方面非常便捷。
先来看一张官方的图
1，新建项目Nav
2，添加FirstViewController用于根视图，添加SecondViewController用于根视图跳转到的视图
3，在AppDelegate.m文件中，修改代理，使得FirstViewController为根视图，如下：
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions { FirstViewController *first = [[FirstViewController alloc] init]; UINavigationController *nav = [[UINavigationController alloc] initWithRootViewController:first]; [self.window setRootViewController:nav]; [self.window makeKeyAndVisible]; return YES; }
4，在FirstViewController.m中设置navigationController的相关属性，如下：
- (void)viewDidLoad { [super viewDidLoad]; self.view.backgroundColor = [UIColor redColor]; self.title = @"首页"; //设置标题 [self.navigationController.navigationBar setBarTintColor:[UIColor purpleColor]];//设置navigationbar的颜色 [self.navigationController.navigationBar setTranslucent:YES];//设置navigationbar的半透明 self.navigationItem.leftBarButtonItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemCamera target:self action:@selector(cameraStart)];//设置navigationbar左边按钮 self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemAdd target:self action:@selector(toSecond)];//设置navigationbar右边按钮 }
样式如图所示：
5，实现toSecond方法push到SecondViewController
- (void)toSecond { SecondViewController *second = [[SecondViewController alloc] init]; [self.navigationController pushViewController:second animated:YES]; }
6，在SecondViewController.m中添加按钮，用于pop回FirstViewController，代码如下
- (void)viewDidLoad { [super viewDidLoad]; self.view.backgroundColor = [UIColor blueColor]; UIButton *button = [[UIButton alloc] initWithFrame:CGRectMake(100, 100, 200, 40)]; [button setTitle:@"返回" forState:UIControlStateNormal]; button.backgroundColor = [UIColor blackColor]; [button addTarget:self action:@selector(backToFirstViewController) forControlEvents:UIControlEventTouchUpInside]; [self.view addSubview:button]; // [self.navigationController.navigationBar setHidden:YES]; } - (void)backToFirstViewController { [self.navigationController popViewControllerAnimated:YES]; // [self.navigationController.navigationBar setHidden:NO]; }
样式如下：
7，隐藏navigationBar，打开注释，设置navigationBar隐藏，同时在返回FirstViewController的方法中让navigationBar显示回来
[self.navigationController.navigationBar setHidden:YES];
源码地址：https://github.com/rokistar/UsingUINavigationController
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原文地址：http://www.cnblogs.com/Roki/p/4560954.html
