#import "YYAppDelegate.h"
#import "YYViewController.h"

@implementation YYAppDelegate

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    //1.創(chuàng)建window，并設(shè)置window的frame
    self.window=[[UIWindow alloc]initWithFrame:[[UIScreen mainScreen] bounds]];
    //2.設(shè)置window的背景顏色為黑色
    self.window.backgroundColor=[UIColor blackColor];

   
    //創(chuàng)建一個(gè)導(dǎo)航控制器作為子控制器
    YYViewController *one=[[YYViewController alloc]init];
    self.window.rootViewController=one;
   
    //3.設(shè)置window為主窗口，并顯示
    [self.window makeKeyAndVisible];
    return YES;
}

@end

#import "YYViewController.h"
#import "YYtwoViewController.h"

@interface YYViewController ()
//當(dāng)點(diǎn)擊的時(shí)候，跳轉(zhuǎn)到第二個(gè)界面
- (IBAction)jump2two:(UIButton *)sender;

@end

- (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view from its nib.
}

- (IBAction)jump2two:(UIButton *)sender {
    //創(chuàng)建一個(gè)新的modal并彈出
    YYtwoViewController *two=[[YYtwoViewController alloc]init];
    //在two上用導(dǎo)航控制器包裝，讓彈出的模態(tài)窗口有一個(gè)導(dǎo)航欄可以放返回按鈕
    UINavigationController *nvc=[[UINavigationController alloc]initWithRootViewController:two
                                 ];
    [self presentViewController:nvc animated:YES completion:^{
        NSLog(@"彈出一個(gè)模態(tài)窗口");
    }];
   
}
@end

#import "YYtwoViewController.h"

@interface YYtwoViewController ()

@end

- (void)viewDidLoad
{
    [super viewDidLoad];

    //給導(dǎo)航條添加一個(gè)返回按鈕
    self.navigationItem.leftBarButtonItem=[[UIBarButtonItem alloc]initWithTitle:@"返回" style:UIBarButtonItemStylePlain target:self action:@selector(change)];
}

-(void)change
{
    //編寫點(diǎn)擊返回按鈕的點(diǎn)擊事件
    //點(diǎn)擊返回按鈕，移除當(dāng)前模態(tài)窗口
//    [self.navigationController dismissViewControllerAnimated:YES completion:^{
//        NSLog(@"移除模態(tài)窗口");
//    }];
   
// 如果一個(gè)控制器是以模態(tài)的形式展現(xiàn)出來(lái)的, 可以調(diào)用該控制器以及該控制器的子控制器讓讓控制器消失
    [self dismissViewControllerAnimated:YES completion:^{
        NSLog(@"移除");
    }];
}

@end

#import "YYViewController.h"
#import "YYtwoViewController.h"

@interface YYViewController ()

@end

- (void)viewDidLoad
{
    [super viewDidLoad];
}

- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
}

/*
 如果控制器之間的關(guān)系比較緊密一般用 UINavigationController
 如果控制器之間的關(guān)系不是很緊密可以用Modal
 */

//通過(guò)segue跳轉(zhuǎn)前，會(huì)調(diào)用這個(gè)方法，在這個(gè)方法中把數(shù)據(jù)傳遞給彈出來(lái)的模態(tài)窗口
-(void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
    //拿到目標(biāo)控制器
    UINavigationController *nav=segue.destinationViewController;
    YYtwoViewController *two=(YYtwoViewController *)nav.topViewController;
    //傳遞數(shù)據(jù)
    two.name=@"文頂頂";
}
@end

#import <UIKit/UIKit.h>

@interface YYtwoViewController : UIViewController
@property(nonatomic,copy)NSString *name;
@end

YYtwoViewController.m文件

//
//  YYtwoViewController.m
//  02-模態(tài)窗口的數(shù)據(jù)傳遞
//
//  Created by apple on 14-6-9.
//  Copyright (c) 2014年 itcase. All rights reserved.
//

#import "YYtwoViewController.h"

@interface YYtwoViewController ()
@property (weak, nonatomic) IBOutlet UILabel *nametext;

@end

- (void)viewDidLoad
{
    [super viewDidLoad];
    self.nametext.text=self.name;
   
    //為導(dǎo)航欄添加一個(gè)返回按鈕
    self.navigationItem.leftBarButtonItem=[[UIBarButtonItem alloc]initWithTitle:@"返回" style:UIBarButtonItemStylePlain target:self action:@selector(black)];
}

-(void)black
{
    //移除模態(tài)窗口
    [self dismissViewControllerAnimated:YES completion:^{
        NSLog(@"成功移除！");
    }];
}
@end