ios-day13-05(以modal的形式切换到UINavigationController)

源码下载地址：http://download.youkuaiyun.com/detail/liu537192/8510031

效果图：

核心代码：

//
//  JLAppDelegate.m
//  05-Modal2
//
//  Created by Mac on 15-3-17.
//  Copyright (c) 2015年 vxinyou. All rights reserved.
//

#import "JLAppDelegate.h"
#import "JLOneViewController.h"

@implementation JLAppDelegate

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
    
    self.window.backgroundColor = [UIColor whiteColor];
    
    self.window.rootViewController = [[JLOneViewController alloc] init];
    
    [self.window makeKeyAndVisible];
    return YES;
}

- (void)applicationWillResignActive:(UIApplication *)application
{
    // Sent when the application is about to move from active to inactive state. This can occur for certain types of temporary interruptions (such as an incoming phone call or SMS message) or when the user quits the application and it begins the transition to the background state.
    // Use this method to pause ongoing tasks, disable timers, and throttle down OpenGL ES frame rates. Games should use this method to pause the game.
}

- (void)applicationDidEnterBackground:(UIApplication *)application
{
    // Use this method to release shared resources, save user data, invalidate timers, and store enough application state information to restore your application to its current state in case it is terminated later. 
    // If your application supports background execution, this method is called instead of applicationWillTerminate: when the user quits.
}

- (void)applicationWillEnterForeground:(UIApplication *)application
{
    // Called as part of the transition from the background to the inactive state; here you can undo many of the changes made on entering the background.
}

- (void)applicationDidBecomeActive:(UIApplication *)application
{
    // Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface.
}

- (void)applicationWillTerminate:(UIApplication *)application
{
    // Called when the application is about to terminate. Save data if appropriate. See also applicationDidEnterBackground:.
}

@end

//
//  JLOneViewController.m
//  05-Modal2
//
//  Created by Mac on 15-3-17.
//  Copyright (c) 2015年 vxinyou. All rights reserved.
//

#import "JLOneViewController.h"
#import "JLTwoViewController.h"

@interface JLOneViewController ()

- (IBAction)enterTwo;
@end

@implementation JLOneViewController



- (IBAction)enterTwo {
    
    JLTwoViewController *twoVC = [[JLTwoViewController alloc] init];
    
    UINavigationController *navC = [[UINavigationController alloc] initWithRootViewController:twoVC];
    
    [self presentViewController:navC animated:YES completion:^{
        
        NSLog(@"JLTwoViewController展示完成...");
    }];
}
@end

//
//  JLTwoViewController.m
//  05-Modal2
//
//  Created by Mac on 15-3-17.
//  Copyright (c) 2015年 vxinyou. All rights reserved.
//

#import "JLTwoViewController.h"

@interface JLTwoViewController ()

@end

@implementation JLTwoViewController

- (void)viewDidLoad
{
    [super viewDidLoad];
    
//    self.title = @"第二个控制器";
    // 用这两种方式设置title是一样的。
    self.navigationItem.title = @"第二个控制器";
    
    self.navigationItem.leftBarButtonItem = [[UIBarButtonItem alloc] initWithTitle:@"返回" style:UIBarButtonItemStyleDone target:self action:@selector(backOne)];
}

- (void)backOne{

    [self.navigationController dismissViewControllerAnimated:YES completion:^{
        
        NSLog(@"JLTwoViewController已关闭");
    }];
    
    // 用这两种方式关闭都是可以的。
//    [self dismissViewControllerAnimated:YES completion:^{
//        
//        NSLog(@"JLTwoViewController已关闭");
//    }];
}


@end