【代碼筆記】電影上的花絮，自動滾動，代碼筆記花絮滾動

【代碼筆記】電影上的花絮，自動滾動，代碼筆記花絮滾動

一，。

二，工程圖。

三，代碼。

RootViewController.h

#import <UIKit/UIKit.h>@interface RootViewController : UIViewController<UIScrollViewDelegate>{    UIScrollView *scoreView;}@end

 

RootViewController.m

#import "RootViewController.h"@interface RootViewController ()@end@implementation RootViewController- (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.        [self initBackgroundView];}#pragma -mark -functions-(void)initBackgroundView{    self.view.backgroundColor=[UIColor greenColor];        scoreView=[[UIScrollView alloc]initWithFrame:CGRectMake(0, 100, 320, 140)];    scoreView.backgroundColor=[UIColor greenColor];    scoreView.contentSize=CGSizeMake(320*3, 140);    scoreView.showsVerticalScrollIndicator=NO;    scoreView.showsHorizontalScrollIndicator=NO;    scoreView.scrollEnabled=NO;    scoreView.delegate=self;    [self.view addSubview:scoreView];            for (int i=0; i<4; i++) {        UIImageView* imageView=[[UIImageView alloc]initWithFrame:CGRectMake(i*320, 0, 320, 140)];         imageView.image=[UIImage imageNamed:[NSString stringWithFormat:@"%d.jpg",i]];        if (i==3) {            imageView.image=[UIImage imageNamed:@"0.jpg"];        }        [scoreView addSubview:imageView];    }        [NSTimer scheduledTimerWithTimeInterval:1.0 target:self selector:@selector(timer:) userInfo:nil repeats:YES];            UIPageControl* pc = [[UIPageControl alloc] initWithFrame:CGRectMake(0, 220, 320, 20)];    pc.numberOfPages = 3;    pc.tag=100;    [pc addTarget:self action:@selector(pc:) forControlEvents:UIControlEventTouchUpInside];    [self.view addSubview:pc];    }-(void)timer:(NSTimer *)timer{    if (scoreView.contentOffset.x==320*3) {        scoreView.contentOffset=CGPointMake(0, 0);    }    [scoreView setContentOffset:CGPointMake(scoreView.contentOffset.x+320,0) animated:YES];}- (void)pc:(UIPageControl*)pc{    scoreView.contentOffset=CGPointMake(pc.currentPage*320, 0);}#pragma -mark -UIScrollerViewDelegate- (void)scrollViewDidScroll:(UIScrollView *)scrollView{    UIPageControl* pc = (UIPageControl*)[self.view viewWithTag:100];    pc.currentPage = scrollView.contentOffset.x / 320;    if (scoreView.contentOffset.x==320*3) {        pc.currentPage=0;    }}- (void)didReceiveMemoryWarning{    [super didReceiveMemoryWarning];    // Dispose of any resources that can be recreated.}