多视图应用程序

SwitchViewController 负责在按下Switch Views 时切换 BlueViewController 和 YellowViewController。

控制器类和对应的 .xib文件都是单独创建。手动组建

效果图：

1、新建 Empty Application 。不选 “Use Core Data”

2、新建 SwitchViewController 类和 SwitchViewController.xib

　　　　BlueViewController 类和 BlueView.xib

　　　　YellowViewController 类和 YellowView.xib

3、编写SwitchViewController 类

 1 #import <UIKit/UIKit.h>
 2 
 3 @class BlueViewController;
 4 @class YellowViewController;
 5 
 6 @interface SwitchViewController : UIViewController
 7 
 8 @property (strong, nonatomic) BlueViewController *blueViewController;
 9 @property (strong, nonatomic) YellowViewController *yellowViewController;
10 
11 -(IBAction)switchViews:(id)sender;
12 
13 @end

 1 #import "SwitchViewController.h"
 2 #import "BlueViewController.h"
 3 #import "YellowViewController.h"
 4 
 5 @interface SwitchViewController ()
 6 
 7 @end
 8 
 9 @implementation SwitchViewController
10 
11 @synthesize blueViewController = _blueViewController;
12 @synthesize yellowViewController = _yellowViewController;
13 
14 -(IBAction)switchViews:(id)sender
15 {
16     [UIView beginAnimations:@"View Flip" context:nil];
17     [UIView setAnimationDuration:1.25];
18     [UIView setAnimationCurve:UIViewAnimationCurveEaseInOut];
19     
20     if (self.yellowViewController.view.superview == nil)
21     {
22         if (self.yellowViewController == nil)
23         {
24             YellowViewController *yellowViewController = [[YellowViewController alloc] initWithNibName:@"YellowView" bundle:nil];
25             self.yellowViewController = yellowViewController;
26         }
27         [UIView setAnimationTransition:UIViewAnimationTransitionFlipFromRight forView:self.view cache:YES];
28         [self.blueViewController viewWillAppear:YES];
29         [self.yellowViewController viewWillDisappear:YES];
30         
31         [self.blueViewController.view removeFromSuperview];
32         [self.view insertSubview:self.yellowViewController.view atIndex:0];
33         
34         [self.yellowViewController viewWillDisappear:YES];
35         [self.blueViewController viewWillAppear:YES];
36     }
37     else 
38     {
39         if (self.blueViewController == nil)
40         {
41             BlueViewController *blueViewController = [[BlueViewController alloc] initWithNibName:@"BlueView" bundle:nil];
42             self.blueViewController = blueViewController;
43         }
44         
45         [UIView setAnimationTransition:UIViewAnimationTransitionFlipFromRight forView:self.view cache:YES];
46         [self.yellowViewController viewWillAppear:YES];
47         [self.blueViewController viewWillDisappear:YES];
48         
49         [self.yellowViewController.view removeFromSuperview];
50         [self.view insertSubview:self.blueViewController.view atIndex:0];
51         
52         [self.blueViewController viewWillDisappear:YES];
53         [self.yellowViewController viewWillAppear:YES];
54     }
55     [UIView commitAnimations];
56 }
57 
58 - (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
59 {
60     self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
61     if (self) {
62         // Custom initialization
63     }
64     return self;
65 }
66 
67 - (void)viewDidLoad
68 {
69     BlueViewController *blueViewController = [[BlueViewController alloc] initWithNibName:@"BlueView" bundle:nil];
70     self.blueViewController = blueViewController;
71     [self.view insertSubview:blueViewController.view atIndex:0];
72     
73     [super viewDidLoad];
74     // Do any additional setup after loading the view.
75 }
76 
77 - (void)viewDidUnload
78 {
79     [super viewDidUnload];
80     // Release any retained subviews of the main view.
81 }
82 
83 - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
84 {
85     return (interfaceOrientation == UIInterfaceOrientationPortrait);
86 }
87 
88 - (void)didReceiveMemoryWarning
89 {
90     if (self.blueViewController.view.superview == nil)
91         self.blueViewController = nil;
92     else
93         self.yellowViewController = nil;
94 }
95 
96 @end

4、关联SwitchViewController类：

5、为 SwitchViewController.xib 添加 “ToolBar”，修改 “Bar Button Item” 为 “Switch Views”

　　为 “Bar Button” 添加事件关联到 -(IBAction)switchViews:(id)sender;

　　关联控制器的Outlet “view” 到视图 “view”

6、设置 “BlueView.xib”：

　　关联BlueViewController类

　　添加背景颜色，设置视图属性

　　添加 “Round Rect Button”，添加事件：

　　关联控制器的Outlet “view” 到视图 “view”

7、修改文件

1 #import <UIKit/UIKit.h>
2 
3 @interface BlueViewController : UIViewController
4 
5 - (IBAction)blueButtonPressed:(id)sender;
6 
7 @end

 1 #import "BlueViewController.h"
 2 
 3 @interface BlueViewController ()
 4 
 5 @end
 6 
 7 @implementation BlueViewController
 8 
 9 - (IBAction)blueButtonPressed:(id)sender
10 {
11     UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Blue View Button Pressed" 
12                                                                     message:@"You pressed the button on the blue view" 
13                                                                     delegate:nil 
14                                                                     cancelButtonTitle:@"Yep, I did." 
15                                                                     otherButtonTitles:nil];
16     [alert show];
17 }
18 
19 // 省略其他方法
20 
21 @end

8、设置“YellowView.xib” 和修改 YellowViewController 类分别同6，7。

9、修改 AppDelegate 类

1 @class SwitchViewController;
2 
3 @interface AppDelegate : UIResponder <UIApplicationDelegate>
4 
5 @property (strong, nonatomic) UIWindow *window;
6 @property (strong, nonatomic) SwitchViewController *switchViewController;
7 
8 @end

 1 #import "AppDelegate.h"
 2 #import "SwitchViewController.h"
 3 
 4 @implementation AppDelegate
 5 
 6 @synthesize window = _window;
 7 @synthesize switchViewController = _switchViewController;
 8 
 9 - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
10 {
11     self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
12     // Override point for customization after application launch.
13     self.switchViewController = [[SwitchViewController alloc] initWithNibName:@"SwitchViewController" bundle:nil];
14     self.window.rootViewController = self.switchViewController;
15     [self.window makeKeyAndVisible];
16     return YES;
17 }
18 
19 @end

。

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原文来自博客园——Submarinex的博客： www.cnblogs.com/submarinex/
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