1.UINavigationController

UINavigationController(導(dǎo)航視圖控制器):管理控制器的控制器，主要管理有層次遞進(jìn)關(guān)系的控制器，以棧的方式管理所控制的視圖控制器，至少要由一個(gè)被管理的試圖控制器，這個(gè)視圖控制器叫導(dǎo)航視圖控制器的根視圖控制器

創(chuàng)建方法，在Appdelegate.m中創(chuàng)建

ViewController *VC = [[ViewController alloc] init];
UINavigationController *naVC = [[UINavigationController alloc] initWithRootViewController:VC];
self.window.rootViewController = naVC;

2.UINavigationBar

UINavigationBar(導(dǎo)航欄):iOS7之后默認(rèn)是半透明，iOS7之前默認(rèn)是不透明的。豎屏下默認(rèn)高度44，橫屏下默認(rèn)高度32。iOS7之后，navigationBar的背景會(huì)延生到statusBar上，所以顯示效果為64。每個(gè)視圖控制器都有一個(gè)navigationItem屬性，在其中設(shè)置左按鈕、右按鈕、標(biāo)題等，會(huì)隨著控制器的顯示，也顯示到navigationBar上

導(dǎo)航欄屬性

self.navigationItem.title = @"標(biāo)題";// 創(chuàng)建單個(gè)titile
self.navigationItem.leftBarButtonItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemAdd target:self action:@selector(add)];// 創(chuàng)建單個(gè)leftBarButtonItem
self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemSave target:self action:@selector(save)];// 創(chuàng)建單個(gè)rightBarButtonItem
/*
// 創(chuàng)建多個(gè)titles
UISegmentedControl *segmentedControl = [[UISegmentedControl alloc] initWithItems:@[@"我", @"你"]];
segmentedControl.frame = CGRectMake(0, 0, 100, 30);
segmentedControl.selectedSegmentIndex = 0;
self.navigationItem.titleView = segmentedControl;

// 創(chuàng)建多個(gè)BarButtonItems
UIBarButtonItem *item1 = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemAdd target:self action:@selector(add)];
UIBarButtonItem *item2 = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemSave target:self action:@selector(save)];
self.navigationItem.leftBarButtonItems = @[item1, item2];
self.navigationItem.rightBarButtonItems = @[item1, item2];

// UINavigationBar屬性
self.navigationController.navigationBarHidden = NO;// 顯隱性
self.navigationController.navigationBar.barStyle = UIBarStyleBlack;// 樣式
self.navigationController.navigationBar.backgroundColor = [UIColor redColor];;// 背景顏色
//self.navigationController.navigationBar.barTintColor = [UIColor yellowColor];// 前景顏色
self.navigationController.navigationBar.tintColor = [UIColor blackColor];// 元素顏色
 */

/**
 *  半透明效果開啟時(shí)，坐標(biāo)原點(diǎn)為(0, 0)
    半透明效果關(guān)閉時(shí)，坐標(biāo)原點(diǎn)為(64, 0)
 */
self.navigationController.navigationBar.translucent = YES;// 半透明效果，iOS7以后默認(rèn)為YES

3.頁(yè)面跳轉(zhuǎn)

導(dǎo)航視圖控制器push

- (void)add {
    BlueViewController *blueVC = [[BlueViewController alloc] init];
    [self.navigationController pushViewController:blueVC animated:YES];// 使用導(dǎo)航視圖控制器推出blueVC
}

模態(tài)推出

- (void)save {
    BlueViewController *blueVC = [[BlueViewController alloc] init];
    [self presentViewController:blueVC animated:YES completion:nil];// 模態(tài)推出blueVC
}

返回方法

- (void)back {
    //[self.navigationController popToRootViewControllerAnimated:YES];// 返回根視圖控制器
    //[self.navigationController popViewControllerAnimated:YES];// 返回上一個(gè)視圖控制器
    [self dismissViewControllerAnimated:YES completion:nil];// 模態(tài)返回上一頁(yè)

}