ios轮播

//
// ViewController.m
// Ocproject
//
// Created by wenzhe yi on 2018/2/28.
// Copyright © 2018年 wenzhe yi. All rights reserved.
//#import "Shuanghui.h"
#import "ViewController.h"#define imageCount 5#define kscrollviewsize (_scrollView.frame.size)@interface ViewController()<UIScrollViewDelegate>@property (weak, nonatomic) IBOutlet UIScrollView *scrollView;
@property (weak, nonatomic) IBOutlet UIPageControl *pageController;@property(strong,nonatomic) NSTimer *timer;@end@implementation ViewController- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib. [self initUi]; [self initPageController];
[self initTimer];}-(void)initTimer{
_timer = [NSTimer scheduledTimerWithTimeInterval: target:self selector:@selector(autoBanner) userInfo:nil repeats:YES];
}
-(void)initUi{
[self initScrollView];}//开始拖拽的时候计时器停止
-(void)scrollViewWillBeginDragging:(UIScrollView *)scrollView{
[_timer invalidate];
}//拖拽结束的时候在开启定时器
-(void)scrollViewDidEndDragging:(UIScrollView *)scrollView willDecelerate:(BOOL)decelerate{
[self initTimer];
}
-(void)initPageController{
_pageController.numberOfPages=imageCount; //非选中颜色
_pageController.pageIndicatorTintColor=[UIColor grayColor]; //选中的颜色
_pageController.currentPageIndicatorTintColor=[UIColor redColor]; //当前页
_pageController.currentPage=;
}
-(void)initScrollView{
// UIImageView *iv = [[UIImageView alloc]initWithFrame:_scrollView.bounds];
//
// //设图片
// iv.image=[UIImage imageNamed:@"img_01"];
//
// //添加
// [_scrollView addSubview:iv]; // CGSize scrollViewSize=_scrollView.frame.size; for (int i=; i<imageCount; i++) { CGFloat imageX=i*kscrollviewsize.width; UIImageView *iv =[[UIImageView alloc] initWithFrame:CGRectMake(imageX, , kscrollviewsize.width, kscrollviewsize.height)]; //imagepath string
NSString *path=[NSString stringWithFormat:@"img_%02d",i+]; //设置pic
iv.image=[UIImage imageNamed:path]; //add [_scrollView addSubview:iv];
}
_scrollView.contentSize=CGSizeMake(*kscrollviewsize.width, ); //隐藏滚动条
_scrollView.showsHorizontalScrollIndicator=NO; //分页效果
_scrollView.pagingEnabled=YES;
//代理
_scrollView.delegate=self;
}- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}-(void)needMoreMeet{
NSLog(@"I LIST");
}
-(void)scrollViewDidScroll:(UIScrollView *)scrollView{}
-(void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView{ _pageController.currentPage=scrollView.contentOffset.x/kscrollviewsize.width;}//无线循环轮播点击事件
- (IBAction)move:(id)sender {
[self autoBanner];
}-(void)autoBanner{
CGPoint offset=_scrollView.contentOffset; NSInteger currentPage = _pageController.currentPage; if(currentPage==imageCount-){
currentPage=;
offset=CGPointZero; }else{
currentPage+=;
offset.x+=kscrollviewsize.width;
} _pageController.currentPage=currentPage;
[_scrollView setContentOffset:offset animated:YES];}@end