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