1 前言
當有的內容要顯示在屏幕上，但是屏幕的尺寸有提供不了所需的面積的時候，我們就要考慮用UIScrollView控件了。

2 代碼實例
ZYViewController.h：

 

[plain]  #import <UIKit/UIKit.h> 
 
@interface ZYViewController : UIViewController<UIScrollViewDelegate> 
 
@property(nonatomic,strong) UIImageView *myImageView; 
@property(nonatomic,strong) UIScrollView *myScrollView; 
 
@end 

#import <UIKit/UIKit.h>

@interface ZYViewController : UIViewController<UIScrollViewDelegate>

@property(nonatomic,strong) UIImageView *myImageView;
@property(nonatomic,strong) UIScrollView *myScrollView;

@end
ZYViewController.m:

[plain] @synthesize myImageView; 
@synthesize myScrollView; 
 
- (void)viewDidLoad 
{ 
    [super viewDidLoad]; 
    // Do any additional setup after loading the view, typically from a nib. 
    self.view.backgroundColor = [UIColor whiteColor]; 
    UIImage *imageToLoad = [UIImage imageNamed:@"Apple.png"]; 
    self.myImageView = [[UIImageView alloc] initWithImage:imageToLoad]; 
    self.myScrollView = [[UIScrollView alloc] initWithFrame:self.view.bounds];//初始化UIScrollerView控件 
    [self.myScrollView addSubview:self.myImageView];//添加圖片到UIScrollerView中 
    self.myScrollView.contentSize = self.myImageView.bounds.size;//將圖片的大小設置給UIScrollerView 
    self.myScrollView.indicatorStyle = UIScrollViewIndicatorStyleWhite;//滑動視圖外觀設置為白色 
    myScrollView.delegate = self;//滾動視圖的代理設置為自己 
    [self.view addSubview:self.myScrollView];//添加UIScrollerView 
 
} 
 
#pragma mark UIScrollView 
//內容滑動時調用該方法 
- (void)scrollViewDidScroll:(UIScrollView *)scrollView{ 
    self.myScrollView.alpha = 0.5f; 
    NSLog(@"調用scrollViewDidScroll方法"); 
} 
//滑動視圖手指離開屏幕而且內容還在滑動的時候 
-(void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView{ 
    self.myScrollView.alpha = 1.0f; 
    NSLog(@"調用scrollViewDidEndDecelerating方法"); 
} 
//完成拖拽動作時候調用的 
-(void)scrollViewDidEndDragging:(UIScrollView *)scrollView willDecelerate:(BOOL)decelerate{ 
    self.myScrollView.alpha = 1.0f; 
    NSLog(@"調用scrollViewDidEndDragging方法"); 
} 

@synthesize myImageView;
@synthesize myScrollView;

- (void)viewDidLoad
{
    [super viewDidLoad];
 // Do any additional setup after loading the view, typically from a nib.
    self.view.backgroundColor = [UIColor whiteColor];
    UIImage *imageToLoad = [UIImage imageNamed:@"Apple.png"];
    self.myImageView = [[UIImageView alloc] initWithImage:imageToLoad];
    self.myScrollView = [[UIScrollView alloc] initWithFrame:self.view.bounds];//初始化UIScrollerView控件
    [self.myScrollView addSubview:self.myImageView];//添加圖片到UIScrollerView中
    self.myScrollView.contentSize = self.myImageView.bounds.size;//將圖片的大小設置給UIScrollerView
    self.myScrollView.indicatorStyle = UIScrollViewIndicatorStyleWhite;//滑動視圖外觀設置為白色
    myScrollView.delegate = self;//滾動視圖的代理設置為自己
    [self.view addSubview:self.myScrollView];//添加UIScrollerView

}

#pragma mark UIScrollView
//內容滑動時調用該方法
- (void)scrollViewDidScroll:(UIScrollView *)scrollView{
    self.myScrollView.alpha = 0.5f;
    NSLog(@"調用scrollViewDidScroll方法");
}
//滑動視圖手指離開屏幕而且內容還在滑動的時候
-(void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView{
    self.myScrollView.alpha = 1.0f;
    NSLog(@"調用scrollViewDidEndDecelerating方法");
}
//完成拖拽動作時候調用的
-(void)scrollViewDidEndDragging:(UIScrollView *)scrollView willDecelerate:(BOOL)decelerate{
    self.myScrollView.alpha = 1.0f;
    NSLog(@"調用scrollViewDidEndDragging方法");
}
運行結果：

滑動前：

 
 

滑動時候：

 
 

拖拽時候控制台顯示內容：

2013-04-25 21:40:40.586 UIScrollViewTest[676:c07]調用scrollViewDidScroll方法

2013-04-25 21:40:42.986 UIScrollViewTest[676:c07]調用scrollViewDidEndDragging方法

滑動時候控制台顯示內容：

2013-04-25 21:43:37.789 UIScrollViewTest[676:c07]調用scrollViewDidScroll方法

2013-04-25 21:43:37.789 UIScrollViewTest[676:c07]調用scrollViewDidEndDecelerating方法

分頁代碼：

ZYUIScrollViewController.h：

[plain]  #import <UIKit/UIKit.h> 
 
@interface ZYUIScrollViewController : UIViewController 
 
@property(nonatomic,strong) UIScrollView *myScrollView; 
 
@end 

#import <UIKit/UIKit.h>

@interface ZYUIScrollViewController : UIViewController

@property(nonatomic,strong) UIScrollView *myScrollView;

@end
ZYUIScrollViewController.m:

 

[plain] view plaincopyprint?- (void)viewDidLoad 
{ 
    [super viewDidLoad]; 
    // Do any additional setup after loading the view. 
    self.view.backgroundColor = [UIColor whiteColor]; 
    //實例化三張圖片 
    UIImage *iPhone = [UIImage imageNamed:@"iPhone.png"]; 
    UIImage *iPod = [UIImage imageNamed:@"iPod.png"]; 
    UIImage *macBookAir = [UIImage imageNamed:@"Mac.png"]; 
    CGRect scrollViewRect = self.view.bounds;//初始化一個屏幕視圖大小矩形邊框 
    self.myScrollView = [[UIScrollView alloc] initWithFrame:scrollViewRect];//初始化UIScrollView控件 
    self.myScrollView.pagingEnabled = YES;//啟動分頁 
    self.myScrollView.contentSize = CGSizeMake(scrollViewRect.size.width*3.0f, scrollViewRect.size.height);//設置UIScrollView的大小 
    [self.view addSubview:self.myScrollView];//添加UIScrollView視圖 
    CGRect imageViewRect = self.view.bounds; 
    UIImageView *iPhoneImageView = [[UIImageView alloc] initWithImage:iPhone];//初始化圖片視圖 
    [iPhoneImageView setFrame:imageViewRect];//設置UIImage的大小 
    [self.myScrollView addSubview:iPhoneImageView]; 
    imageViewRect.origin.x += imageViewRect.size.width;//imageViewRect的橫坐標向右移動原來imageViewRect寬度的距離 
    UIImageView *iPodImageView = [[UIImageView alloc] initWithImage:iPod]; 
    [iPodImageView setFrame:imageViewRect]; 
    [self.myScrollView addSubview:iPodImageView]; 
    imageViewRect.origin.x += imageViewRect.size.width; 
    UIImageView *macBookAirImageView = [[UIImageView alloc] initWithImage:macBookAir]; 
    [macBookAirImageView setFrame:imageViewRect]; 
    [self.myScrollView addSubview:macBookAirImageView]; 
     
} 

- (void)viewDidLoad
{
    [super viewDidLoad];
 // Do any additional setup after loading the view.
    self.view.backgroundColor = [UIColor whiteColor];
    //實例化三張圖片
    UIImage *iPhone = [UIImage imageNamed:@"iPhone.png"];
    UIImage *iPod = [UIImage imageNamed:@"iPod.png"];
    UIImage *macBookAir = [UIImage imageNamed:@"Mac.png"];
    CGRect scrollViewRect = self.view.bounds;//初始化一個屏幕視圖大小矩形邊框
    self.myScrollView = [[UIScrollView alloc] initWithFrame:scrollViewRect];//初始化UIScrollView控件
    self.myScrollView.pagingEnabled = YES;//啟動分頁
    self.myScrollView.contentSize = CGSizeMake(scrollViewRect.size.width*3.0f, scrollViewRect.size.height);//設置UIScrollView的大小
    [self.view addSubview:self.myScrollView];//添加UIScrollView視圖
    CGRect imageViewRect = self.view.bounds;
    UIImageView *iPhoneImageView = [[UIImageView alloc] initWithImage:iPhone];//初始化圖片視圖
    [iPhoneImageView setFrame:imageViewRect];//設置UIImage的大小
    [self.myScrollView addSubview:iPhoneImageView];
    imageViewRect.origin.x += imageViewRect.size.width;//imageViewRect的橫坐標向右移動原來imageViewRect寬度的距離
    UIImageView *iPodImageView = [[UIImageView alloc] initWithImage:iPod];
    [iPodImageView setFrame:imageViewRect];
    [self.myScrollView addSubview:iPodImageView];
    imageViewRect.origin.x += imageViewRect.size.width;
    UIImageView *macBookAirImageView = [[UIImageView alloc] initWithImage:macBookAir];
    [macBookAirImageView setFrame:imageViewRect];
    [self.myScrollView addSubview:macBookAirImageView];
   
}
運行結果：