[IOS UIScrollView+PageControl]信息展示横幅

#import <UIKit/UIKit.h>

@interface ScrollViewController : UIViewController<UIScrollViewDelegate,UIPageViewControllerDelegate>
{

UIScrollView *_scrollView;
UIPageControl*_pageControl;
}
@end

#import "ScrollViewController.h"

@interface ScrollViewController ()

@end

@implementation ScrollViewController

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

}
return self;
}

- (void)viewDidLoad
{
[super viewDidLoad];

//设置ScrollView的整体触摸与显示区域
//注意 宽 高不要超过 320X480
//否则会出现无法滚动的情况
_scrollView = [[[UIScrollView alloc] initWithFrame:CGRectMake(0, 0, 320,120)] autorelease];

//设置ScrollView滚动内容的区域
//它通常是需要大于ScrollerView的显示区域的
//这样才有必要在ScrollerView中滚动它
[_scrollView setContentSize:CGSizeMake(320 * 5, 120)];

//开启滚动分页功能，如果不需要这个功能关闭即可
[_scrollView setPagingEnabled:YES];

//隐藏横向与纵向的滚动条
[_scrollView setShowsVerticalScrollIndicator:NO];
[_scrollView setShowsHorizontalScrollIndicator:NO];

//在本类中代理scrollView的整体事件
[_scrollView setDelegate:self];

//如果你打开横向或纵向的滚动条，这里可以设置滚动条的风格
// UIScrollViewIndicatorStyleDefault, 默认风格
// UIScrollViewIndicatorStyleBlack,   黑色风格
// UIScrollViewIndicatorStyleWhite    白色风格
//[_scrollView setIndicatorStyle:UIScrollViewIndicatorStyleBlack]

for (int i =0; i<5; i++)
{

//在这里给每一个ScrollView添加一个图片 和一个按钮
UIImageView *imageView= [[[UIImageView alloc] initWithFrame:CGRectMake(i * 320,0,320,120)] autorelease];
[imageView setImage:[UIImage imageNamed:@"image.png"]];

UIButton * button = [UIButton buttonWithType:UIButtonTypeRoundedRect];
button.frame = CGRectMake(i * 320, 10, 100, 30);

[button setTitle:@"这是一个按钮" forState:UIControlStateNormal];

[button addTarget:self action:@selector(buttonClick) forControlEvents:UIControlEventTouchUpInside];

//把每页需要显示的VIEW添加进ScrollerView中
[_scrollView addSubview:imageView];
[_scrollView addSubview:button];
}

//整体再将ScrollerView显示在窗口中
[self.view addSubview:_scrollView];

//页面控制小工具
//它会在底部绘制小圆点标志当前显示页面
_pageControl = [[[UIPageControl alloc] initWithFrame:CGRectMake(0,100,self.view.frame.size.width, 20)]autorelease];
//设置页面的数量
[_pageControl setNumberOfPages:5];
//监听页面是否发生改变
[_pageControl addTarget:self action:@selector(changePage:) forControlEvents:UIControlEventValueChanged];
[self.view addSubview:_pageControl];

}

- (void)changePage:(id)sender
{
//得到当前页面的ID
//int page = [sender currentPage];

//在这里写你需要执行的代码
//......
}

//手指离开屏幕后ScrollView还会继续滚动一段时间只到停止
- (void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView
{

NSLog(@"结束滚动后缓冲滚动彻底结束时调用");
}

-(void) scrollViewWillBeginDecelerating:(UIScrollView *)scrollView
{

NSLog(@"结束滚动后开始缓冲滚动时调用");
}

-(void)scrollViewDidScroll:(UIScrollView*)scrollView

{
//页面滚动时调用，设置当前页面的ID
[_pageControl setCurrentPage:fabs(scrollView.contentOffset.x/self.view.frame.size.width)];
NSLog(@"视图滚动中X轴坐标%f",scrollView.contentOffset.x);
NSLog(@"视图滚动中X轴坐标%f",scrollView.contentOffset.y);
}

-(void)scrollViewWillBeginDragging:(UIScrollView*)scrollView
{
NSLog(@"滚动视图开始滚动，它只调用一次");
}

-(void)scrollViewDidEndDragging:(UIScrollView*)scrollView willDecelerate:(BOOL)decelerate
{
NSLog(@"滚动视图结束滚动，它只调用一次");

}

-(void)buttonClick
{
NSLog(@"按钮点击了");

}

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

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
return (interfaceOrientation == UIInterfaceOrientationPortrait);
}

@end