1 // 2 //  YYAppDelegate.m 3 //  01-导航控制器的使用1 4 // 5 //  Created by apple on 14-6-4. 6 //  Copyright (c) 2014年 itcase. All rights reserved. 7 // 8  9 #import "YYAppDelegate.h"10 #import "YYOneViewController.h"11 12 @implementation YYAppDelegate13 14 //应用程序启动完毕即会调用15 - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions16 {17     self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];18     self.window.backgroundColor = [UIColor whiteColor];19     20     21     //3.添加子控制器到导航控制器中22     //第一种也是最常用的一种23 //    YYOneViewController *one=[[YYOneViewController alloc]init];24 //    UINavigationController *nav=[[UINavigationController alloc]initWithRootViewController:one];25     26     //1.创建一个导航控制器27     UINavigationController *nav=[[UINavigationController alloc]init];28     //2.设置导航控制器为window的根视图29     self.window.rootViewController=nav;30     31     //第二种32     YYOneViewController  *one = [[YYOneViewController  alloc] init];33     [nav pushViewController:one animated:YES];34     35     //第三种36 //    [nav addChildViewController:one];37 //    第四种(添加到导航控制器的栈中)38 //    nav.viewControllers=@[one];39     40     // 导航控制器的栈41     //    nav.viewControllers;== nav.childViewControllers;42     // 注意该属性是只读的，因此不能像下面这样写43     //    nav.childViewControllers = @[one];44     45     46     [self.window makeKeyAndVisible];47     return YES;48 }49 50 @end

 1 // 2 //  YYOneViewController.m 3 //  01-导航控制器的使用1 4 // 5 //  Created by apple on 14-6-4. 6 //  Copyright (c) 2014年 itcase. All rights reserved. 7 // 8  9 #import "YYOneViewController.h"10 #import "YYTwoViewController.h"11 12 @interface YYOneViewController ()13 /**14  跳转到第二个界面15  */16 - (IBAction)jump2two:(id)sender;17 18 @end19 20 @implementation YYOneViewController21 22 23 - (IBAction)jump2two:(id)sender {24     //1.创建第二个子控制器25     YYTwoViewController *two=[[YYTwoViewController alloc]init];26     27     //2.把子控制器添加到导航控制器中28     //有什么办法能够拿到导航控制器？29      //只要当前控制器是导航控制器的子控制器，那么就可以通过该属性直接获取到当前控制器所在的导航控制器30     [self.navigationController pushViewController:two animated:YES];31 }32 33 -(void)viewDidLoad34 {35     [super viewDidLoad];36     //控制当前控制器对应的导航条显示的内容37     self.navigationItem.title=@"第一个界面";38     //修改返回按钮显示的内容39     self.navigationItem.backBarButtonItem=[[UIBarButtonItem alloc]initWithTitle:@"返回一" style:UIBarButtonItemStylePlain target:nil action:nil];40 }41 @end

 1 // 2 //  YYTwoViewController.m 3 //  01-导航控制器的使用1 4 // 5 //  Created by apple on 14-6-4. 6 //  Copyright (c) 2014年 itcase. All rights reserved. 7 // 8  9 #import "YYTwoViewController.h"10 #import "YYThreeViewController.h"11 @interface YYTwoViewController ()12 - (IBAction)jump2Three:(id)sender;13 14 @end15 16 @implementation YYTwoViewController17 18 //跳转到第三个子控制器19 - (IBAction)jump2Three:(id)sender {20     //1.创建第三个子控制器21     YYThreeViewController *three=[[YYThreeViewController alloc]init];22     //2.将子控制器添加到导航控制器中23     [self.navigationController pushViewController:three animated:YES];24 }25 26 -(void)viewDidLoad27 {28     [super viewDidLoad];29     //给导航栏添加按钮30     //添加导航栏左边的按钮(添加一个相机图标的按钮),会盖掉返回31 //    self.navigationItem.leftBarButtonItem=[[UIBarButtonItem alloc]initWithBarButtonSystemItem:UIBarButtonSystemItemCamera target:nil action:nil];32     33     //为导航栏在右边添加多个按钮34     //创建两个按钮35     UIBarButtonItem *a=[[UIBarButtonItem alloc]initWithBarButtonSystemItem:UIBarButtonSystemItemStop target:nil action:nil];36     UIBarButtonItem *b=[[UIBarButtonItem alloc]initWithBarButtonSystemItem:UIBarButtonSystemItemReply target:nil action:nil];37     UIBarButtonItem *c=[[UIBarButtonItem alloc]initWithBarButtonSystemItem:UIBarButtonSystemItemCamera target:nil action:nil];38     self.navigationItem.rightBarButtonItems=@[a,b,c];39     40     //设置对应的导航条的返回（第三个界面导航条的返回）41     self.navigationItem.backBarButtonItem=[[UIBarButtonItem alloc]initWithTitle:@"返回" style:UIBarButtonItemStyleBordered target:nil action:nil];42 }43 @end

 1 // 2 //  YYThreeViewController.m 3 //  01-导航控制器的使用1 4 // 5 //  Created by apple on 14-6-4. 6 //  Copyright (c) 2014年 itcase. All rights reserved. 7 // 8  9 #import "YYThreeViewController.h"10 #import "YYTwoViewController.h"11 12 @interface YYThreeViewController ()13 //返回到第二个控制器页面14 - (IBAction)jump2two:(id)sender;15 //返回到第一个控制器页面16 - (IBAction)jump2root:(id)sender;17 18 @end19 20 @implementation YYThreeViewController21 22 23 - (IBAction)jump2two:(id)sender {24     //跳转到第二个界面(移除当前栈顶的控制器)25     [self.navigationController popViewControllerAnimated:YES];26 }27 28 - (IBAction)jump2root:(id)sender {29     //移除处理栈底控制器之外的所有控制器30     [self.navigationController popToRootViewControllerAnimated:YES];31     32     // 只要传入栈中的某一个控制器,就会跳转到指定控制器33        //不能这样，没添加到导航控制器YYTwoViewController *two = [[YYTwoViewController  alloc] init];34     //[self.navigationController popToViewController:<#(UIViewController *)#> animated:<#(BOOL)#>];35 }36 @end

 1 // 应用程序获取焦点(代表着可以和用户交互) 2 - (void)applicationDidBecomeActive:(UIApplication *)application 3 { 4     NSLog(@"applicationDidBecomeActive"); 5      6      7     UINavigationController *nav =  (UINavigationController *)self.window.rootViewController; 8     UINavigationBar *bar =  nav.navigationBar; 9 //    NSLog(@"%@", NSStringFromCGRect(bar.frame));10     11     NSString *str =  [self digView:self.window];12     [str writeToFile:@"/Users/apple/Desktop/ios6.xml" atomically:YES];13     14 }15 16 /**17  *  返回传入veiw的所有层级结构18  *19  *  @param view 需要获取层级结构的view20  *21  *  @return 字符串22  */23 - (NSString *)digView:(UIView *)view24 {25     if ([view isKindOfClass:[UITableViewCell class]]) return @"";26     // 1.初始化27     NSMutableString *xml = [NSMutableString string];28     29     // 2.标签开头30     [xml appendFormat:@"<%@ frame=\"%@\"", view.class, NSStringFromCGRect(view.frame)];31     if (!CGPointEqualToPoint(view.bounds.origin, CGPointZero)) {32         [xml appendFormat:@" bounds=\"%@\"", NSStringFromCGRect(view.bounds)];33     }34     35     if ([view isKindOfClass:[UIScrollView class]]) {36         UIScrollView *scroll = (UIScrollView *)view;37         if (!UIEdgeInsetsEqualToEdgeInsets(UIEdgeInsetsZero, scroll.contentInset)) {38             [xml appendFormat:@" contentInset=\"%@\"", NSStringFromUIEdgeInsets(scroll.contentInset)];39         }40     }41     42     // 3.判断是否要结束43     if (view.subviews.count == 0) {44         [xml appendString:@" />"];45         return xml;46     } else {47         [xml appendString:@">"];48     }49     50     // 4.遍历所有的子控件51     for (UIView *child in view.subviews) {52         NSString *childXml = [self digView:child];53         [xml appendString:childXml];54     }55     56     // 5.标签结尾57     [xml appendFormat:@"</%@>", view.class];58     59     return xml;60 }