//應(yīng)用程序啟動(dòng)完畢即會(huì)調(diào)用15- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions16{17self.window =[[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];18self.window.backgroundColor =[UIColor whiteColor];192021//3.添加子控制器到導(dǎo)航控制器中22//第一種也是最常用的一種23//YYOneViewController *one=[[YYOneViewController alloc]init];24//UINavigationController *nav=[[UINavigationController alloc]initWithRootViewController:one];2526//1.創(chuàng)建一個(gè)導(dǎo)航控制器27UINavigationController *nav=[[UINavigationController alloc]init];28//2.設(shè)置導(dǎo)航控制器為window的根視圖29self.window.rootViewController=nav;3031//第二種32YYOneViewController? *one =[[YYOneViewController? alloc] init];33[nav pushViewController:one animated:YES];3435//第三種36//[nav addChildViewController:one];37//第四種(添加到導(dǎo)航控制器的棧中)38//nav.viewControllers=@[one];3940//導(dǎo)航控制器的棧41//nav.viewControllers;== nav.childViewControllers;42//注意該屬性是只讀的，因此不能像下面這樣寫43//nav.childViewControllers = @[one];444546[self.window makeKeyAndVisible];47returnYES;48}4950@end

YYOneViewController.m文件

1//2//YYOneViewController.m3//01-導(dǎo)航控制器的使用14//5//Created by apple on 14-6-4.6//Copyright (c) 2014年 itcase. All rights reserved.7//89#import"YYOneViewController.h"10#import"YYTwoViewController.h"1112@interfaceYYOneViewController ()13/**14跳轉(zhuǎn)到第二個(gè)界面15*/16- (IBAction)jump2two:(id)sender;1718@end1920@implementationYYOneViewController212223- (IBAction)jump2two:(id)sender {24//1.創(chuàng)建第二個(gè)子控制器25YYTwoViewController *two=[[YYTwoViewController alloc]init];2627//2.把子控制器添加到導(dǎo)航控制器中28//有什么辦法能夠拿到導(dǎo)航控制器瓶珊？29//只要當(dāng)前控制器是導(dǎo)航控制器的子控制器鲁森，那么就可以通過(guò)該屬性直接獲取到當(dāng)前控制器所在的導(dǎo)航控制器30[self.navigationController pushViewController:two animated:YES];31}3233-(void)viewDidLoad34{35[super viewDidLoad];36//控制當(dāng)前控制器對(duì)應(yīng)的導(dǎo)航條顯示的內(nèi)容37self.navigationItem.title=@"第一個(gè)界面";38//修改返回按鈕顯示的內(nèi)容39self.navigationItem.backBarButtonItem=[[UIBarButtonItem alloc]initWithTitle:@"返回一"style:UIBarButtonItemStylePlain target:nil action:nil];40}41@end

YYTwoViewController.m文件

1//2//YYTwoViewController.m3//01-導(dǎo)航控制器的使用14//5//Created by apple on 14-6-4.6//Copyright (c) 2014年 itcase. All rights reserved.7//89#import"YYTwoViewController.h"10#import"YYThreeViewController.h"11@interfaceYYTwoViewController ()12- (IBAction)jump2Three:(id)sender;1314@end1516@implementationYYTwoViewController1718//跳轉(zhuǎn)到第三個(gè)子控制器19- (IBAction)jump2Three:(id)sender {20//1.創(chuàng)建第三個(gè)子控制器21YYThreeViewController *three=[[YYThreeViewController alloc]init];22//2.將子控制器添加到導(dǎo)航控制器中23[self.navigationController pushViewController:three animated:YES];24}2526-(void)viewDidLoad27{28[super viewDidLoad];29//給導(dǎo)航欄添加按鈕30//添加導(dǎo)航欄左邊的按鈕(添加一個(gè)相機(jī)圖標(biāo)的按鈕),會(huì)蓋掉返回31//self.navigationItem.leftBarButtonItem=[[UIBarButtonItem alloc]initWithBarButtonSystemItem:UIBarButtonSystemItemCamera target:nil action:nil];3233//為導(dǎo)航欄在右邊添加多個(gè)按鈕34//創(chuàng)建兩個(gè)按鈕35UIBarButtonItem *a=[[UIBarButtonItem alloc]initWithBarButtonSystemItem:UIBarButtonSystemItemStop target:nil action:nil];36UIBarButtonItem *b=[[UIBarButtonItem alloc]initWithBarButtonSystemItem:UIBarButtonSystemItemReply target:nil action:nil];37UIBarButtonItem *c=[[UIBarButtonItem alloc]initWithBarButtonSystemItem:UIBarButtonSystemItemCamera target:nil action:nil];38self.navigationItem.rightBarButtonItems=@[a,b,c];3940//設(shè)置對(duì)應(yīng)的導(dǎo)航條的返回（第三個(gè)界面導(dǎo)航條的返回）41self.navigationItem.backBarButtonItem=[[UIBarButtonItem alloc]initWithTitle:@"返回"style:UIBarButtonItemStyleBordered target:nil action:nil];42}43@end

YYThreeViewController.m文件

1//2//YYThreeViewController.m3//01-導(dǎo)航控制器的使用14//5//Created by apple on 14-6-4.6//Copyright (c) 2014年 itcase. All rights reserved.7//89#import"YYThreeViewController.h"10#import"YYTwoViewController.h"1112@interfaceYYThreeViewController ()13//返回到第二個(gè)控制器頁(yè)面14- (IBAction)jump2two:(id)sender;15//返回到第一個(gè)控制器頁(yè)面16- (IBAction)jump2root:(id)sender;1718@end1920@implementationYYThreeViewController212223- (IBAction)jump2two:(id)sender {24//跳轉(zhuǎn)到第二個(gè)界面(移除當(dāng)前棧頂?shù)目刂破?25[self.navigationController popViewControllerAnimated:YES];26}2728- (IBAction)jump2root:(id)sender {29//移除處理?xiàng)５卓刂破髦獾乃锌刂破?0[self.navigationController popToRootViewControllerAnimated:YES];3132//只要傳入棧中的某一個(gè)控制器,就會(huì)跳轉(zhuǎn)到指定控制器33//不能這樣琉挖，沒添加到導(dǎo)航控制器YYTwoViewController *two = [[YYTwoViewController? alloc] init];34//[self.navigationController popToViewController:<#(UIViewController *)#> animated:<#(BOOL)#>];35}36@end

實(shí)現(xiàn)效果：

三、導(dǎo)航控制器通過(guò)棧來(lái)管理子控制器

示意圖

：

說(shuō)明：

導(dǎo)航控制器是通過(guò)棧的形式來(lái)管理子控制器的（先進(jìn)后出）

顯示在導(dǎo)航控制器上得view永遠(yuǎn)是棧頂控制器的view

一個(gè)導(dǎo)航控制器只有一個(gè)導(dǎo)航條虱痕，也就是說(shuō)所有的自控制器公用一個(gè)導(dǎo)航條脚作。

四、補(bǔ)充

在代理方法中作烟，打印當(dāng)前window下面的所有子控件，并通過(guò)xml文件來(lái)保存砾医，代碼如下拿撩。

//應(yīng)用程序獲取焦點(diǎn)(代表著可以和用戶交互)- (void)applicationDidBecomeActive:(UIApplication *)application

{

NSLog(@"applicationDidBecomeActive");

UINavigationController*nav =? (UINavigationController *)self.window.rootViewController;

UINavigationBar*bar =nav.navigationBar;//NSLog(@"%@", NSStringFromCGRect(bar.frame));NSString*str =[self digView:self.window];

[str writeToFile:@"/Users/apple/Desktop/ios6.xml"atomically:YES];

}/**

*? 返回傳入veiw的所有層級(jí)結(jié)構(gòu)

*

*? @param view 需要獲取層級(jí)結(jié)構(gòu)的view

*

*? @return 字符串*/- (NSString *)digView:(UIView *)view

{if([view isKindOfClass:[UITableViewCellclass]])return@"";//1.初始化NSMutableString *xml = [NSMutableStringstring];//2.標(biāo)簽開頭[xml appendFormat:@"<%@ frame=\"%@\"", view.class, NSStringFromCGRect(view.frame)];if(!CGPointEqualToPoint(view.bounds.origin, CGPointZero)) {

[xml appendFormat:@"bounds=\"%@\"", NSStringFromCGRect(view.bounds)];

}if([view isKindOfClass:[UIScrollViewclass]]) {

UIScrollView*scroll = (UIScrollView *)view;if(!UIEdgeInsetsEqualToEdgeInsets(UIEdgeInsetsZero, scroll.contentInset)) {

[xml appendFormat:@"contentInset=\"%@\"", NSStringFromUIEdgeInsets(scroll.contentInset)];

}

}//3.判斷是否要結(jié)束if(view.subviews.count ==0) {

[xml appendString:@"/>"];returnxml;

}else{

[xml appendString:@">"];

}//4.遍歷所有的子控件for(UIView *childinview.subviews) {

NSString*childXml =[self digView:child];

[xml appendString:childXml];

}//5.標(biāo)簽結(jié)尾[xml appendFormat:@"", view.class];returnxml;

}