IOS-ScrollView創造Android-ViewPager效果

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1.將圖片放進images檔案夾,並改名為images.bundle.拖進項目中

2拖動scrollView 並在左上方按住Scroll View 拖到View Controller中 選擇deleagte.

這時候.指定Scroll View的代理為controller. 

為指定的controller加上代理

#import <UIKit/UIKit.h>@interface CSZViewController : UIViewController <UIScrollViewDelegate>//ViewPager@property (weak, nonatomic) IBOutlet UIScrollView *scrollView;@end

@implementation CSZViewController- (void)viewDidLoad{    [super viewDidLoad];        int width=self.view.frame.size.width;    int height=self.view.frame.size.height;        //從bundle壓縮檔中取出多頁的內容路徑    NSString *bundlePath=[[NSBundle mainBundle] pathForResource:@"images" ofType:@"bundle"];    NSBundle *bundle=[[NSBundle alloc] initWithPath:bundlePath];    self.imagesArr=[bundle pathsForResourcesOfType:@"jpg" inDirectory:nil];self.scrollView.contentSize=CGSizeMake(self.imagesArr.count*width,height);        //建立分頁    for (int i=0; i<self.imagesArr.count; i++) {        UIImageView *itemImage=[[UIImageView alloc] init];        itemImage.image=[UIImage imageWithContentsOfFile:self.imagesArr[i]];        itemImage.frame=CGRectMake(i*width, 0, width, height);        [self.scrollView addSubview:itemImage];    }        //消除滑動時出現的滑塊    self.scrollView.showsHorizontalScrollIndicator=NO;    //使ViewPager富有彈性.分割每頁    self.scrollView.pagingEnabled=YES;    //建立標識    UIPageControl *ctr=[[UIPageControl alloc] init];    ctr.bounds=CGRectMake(0, 0, 150, 50);    ctr.center=CGPointMake(width*0.5, height-50);    ctr.currentPageIndicatorTintColor=[UIColor redColor];    ctr.pageIndicatorTintColor=[UIColor grayColor];    ctr.currentPage=1;    //聲明指標的個數。如果不設定將不顯示    ctr.numberOfPages=self.imagesArr.count;    [ctr addTarget:self action:@selector(pageIndict:) forControlEvents:UIControlEventValueChanged];    [self.view addSubview:ctr];    //因為self.view已經綁定了一次，所以pageControl為弱引用    self.pageControl=ctr;}#pragma mark 點擊指標 跳轉ViewPager- (IBAction)pageIndict:(id)sender{    int curr=self.pageControl.currentPage;    NSLog(@"%d",curr);    self.scrollView.contentOffset=CGPointMake(self.view.frame.size.width*curr, 0)    ;}#pragma mark 當滑動ViewPager時停下來 讓對應的指標進行改變-(void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView{    int offSetX=self.scrollView.contentOffset.x;    int index=offSetX/self.view.frame.size.width;    self.pageControl.currentPage=index;    }@end