008 在Xcode4.5上创建IOS6.0应用 (多视图应用程序)

根视图应用程序(两个视图之间的切换)

在IOS上做多视图的切换是个比较重要的东西，也是一个要重点了解的知识点。在iOS下开发的程序基本上所有的都是有多个视图，下面我就带大家一起来创建一个多视图的应用

首先让我们看看实际运行的效果图

通过点击下面的切换视图按钮来达到视图切换的目的

目录大纲

创建两个不同的视图

第一步：选择Group点击右健选择 new File

第二步：选择iOS下面的CocoaTouch然后是Object_C 点击下一步

第三步：创建点击下一步完成

Class写一个自己的类明

SubClass of 中有很多的选择项，这里我们要选择UIViewController这个对象

注意：记得钩上With XIB for user interface 选项

下面就只要设计界面，然后完善视图就OK啦

只要按照下面的代码然后执行就可以看到上面的效果

ViewController.h

注意在主视图的H文件中要记得引入两个子视图控件的H文件

#import "YellowViewController.h"

#import "BlueViewController.h"

@interface ViewController : UIViewController {
    YellowViewController *yellowViewController;
    BlueViewController *blueViewController;
}

@property(nonatomic,retain)YellowViewController *yellowViewController;
@property(nonatomic,retain)BlueViewController *blueViewController;


//定义按钮切换视图
-(IBAction)switchViews:(id)sender;

@end

ViewController.m

@implementation ViewController

@synthesize yellowViewController;
@synthesize blueViewController;

//定义按钮切换视图
-(IBAction)switchViews:(id)sender{
    //替换相互的视图
    //第一个判断是判断黄色视图在主视图中是否存在
    if(self.yellowViewController.view.superview == nil){
        //判断当前现实的是否为黄色的视图
        if(self.yellowViewController.view == nil){
            YellowViewController *yellowViewCV = [[YellowViewController alloc] initWithNibName:@"YellowViewController" bundle:nil];
            self.yellowViewController = yellowViewCV;
            [yellowViewCV release];
        }
        //移除掉蓝色视图
        [self.blueViewController.view removeFromSuperview];
        [self.view insertSubview:yellowViewController.view atIndex:0];
    }else{
        if(self.blueViewController.view == nil){
            BlueViewController *blueViewCV = [[BlueViewController alloc] initWithNibName:@"BlueViewController" bundle:nil];
            self.blueViewController = blueViewCV;
            [blueViewCV release];
        }
        [self.yellowViewController.view removeFromSuperview];
        [self.view insertSubview:blueViewController.view atIndex:0];
    }
}


//让程序一加载的时候就调用蓝色视图
- (void)viewDidLoad
{
    [super viewDidLoad];
	BlueViewController *blueViewCV = [[BlueViewController alloc] initWithNibName:@"BlueViewController" bundle:nil];
    self.blueViewController = blueViewCV;
    //为什么这里创建号成员变量获取视图后有release呢？原因在于要释放资源，因为在H文件中该成员变量定义的为   @property(nonatomic,retain)  中的retain类型，该类型可以保持成员变量
    [blueViewCV release];
    //最后再把这个视图插入到主视图当中去  注意后面一个参数为0是为了是视图放到最地层
    [self.view insertSubview:blueViewController.view atIndex:0];
}

- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}


- (void)dealloc
{
    [yellowViewController release];
    [blueViewController release];
    [super dealloc];
}
@end

YellowViewController.h

@interface YellowViewController : UIViewController


-(IBAction)yellclick:(id)sender;

@end

YellowViewController.m

@implementation YellowViewController


-(IBAction)yellclick:(id)sender{
    UIAlertView * alert = [[UIAlertView alloc] initWithTitle:@"紧急提示"
                                                     message:@"手真贱,乱摸,还想不想活."
                                                    delegate:nil
                                           cancelButtonTitle:@"快放手"
                                           otherButtonTitles:@"我就要摸", nil];
    [alert show];
    [alert release];
}

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self) {
        // Custom initialization
    }
    return self;
}

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

- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

@end

BlueViewController.h

@interface BlueViewController : UIViewController

-(IBAction)blueclick:(id)sender;

@end

BlueViewController.m

@implementation BlueViewController

-(IBAction)blueclick:(id)sender{
    UIAlertView * alert = [[UIAlertView alloc] initWithTitle:@"紧急提示"
                                                     message:@"亲爱的我想你."
                                                    delegate:nil
                                           cancelButtonTitle:@"想你妹"
                                           otherButtonTitles:@"我也想你", nil];
    [alert show];
    [alert release];
}

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self) {
        // Custom initialization
    }
    return self;
}

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

- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

@end

这样一来我们的多视图应用程序就完成啦。

1楼whui0110前天 11:10: 你好，请问你的主界面和上面的View Controller怎么拖拽生成的。

008 在Xcode4.5下创建IOS6.0应用 (多视图应用程序)

根视图应用程序(两个视图之间的切换)

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