@property (nonatomic,strong) UIPageControl *pageControl;
@property (nonatomic,strong) UIScrollView *scorllView;
//创建一个图片切换器，4张图片切换
self.scorllView = [[UIScrollView alloc]initWithFrame:CGRectMake(0, 0, 320, 200)];
_scorllView.backgroundColor = [UIColor blackColor];
[self.view addSubview:_scorllView];
for (int i = 0; i<4; i++) {
UIImageView *fimageView = [[UIImageView alloc]initWithFrame:CGRectMake(320*i, 0, 320, 200)];
fimageView.image = [UIImage imageNamed:[NSString stringWithFormat:@"%d",i+1]];
fimageView.tag = i+1;
[_scorllView addSubview:fimageView];
}
_scorllView.pagingEnabled =YES;//设置内容按页显示
_scorllView.showsHorizontalScrollIndicator = UIScrollViewIndicatorStyleWhite;//横向条类型
_scorllView.contentSize = CGSizeMake(320*4, 200);//幕布大小，决定滚动的方向，若contentsize<=本身的size则无法滚动
_scorllView.delegate = self;//服从代理
其他常用属性：
scrollView.bounces=NO;//两侧弹簧效果
//设置是否可以滚动 scrollView.scrollEnabled = NO;
//进度条的样式
scrollView.indicatorStyle = UIScrollViewIndicatorStyleWhite;
//top,left,buttom,right,top和right影响纵向进度条，buttom和left影响横向进度条
scrollView.scrollIndicatorInsets = UIEdgeInsetsMake(10, 10, 10, 10);
//边缘黑边的大小
scrollView.contentInset = UIEdgeInsetsMake(50, 50, 50, 50);
_scorllView.contentOffset = CGPointMake(320*2, 0);
//放大缩小的倍数限制
_scorllView.minimumZoomScale = 0.5;
_scorllView.maximumZoomScale = 2;
//创建pagecontrol负责每一页的控制
self.pageControl = [[UIPageControl alloc]initWithFrame:CGRectMake(0, 180, 320, 5)];
_pageControl.numberOfPages = 4;//页面总数
[_pageControl addTarget:self action:@selector(pageChanged) forControlEvents:UIControlEventValueChanged];
[self.view addSubview:_pageControl];
#pragma mark------------UIScrollerDelegate------
-(void)pageChanged{
[self.scorllView setContentOffset:CGPointMake(320*_pageControl.currentPage, 0) animated:YES];
}
-(void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView{
//获取滚动的页数,offset对应的页数
int page = scrollView.contentOffset.x/320.0;
// NSLog(@"x:%f page:%d",scrollView.contentOffset.x,page);
[self.pageControl setCurrentPage:page];
}
//手指即将拖动
-(void)scrollViewWillBeginDragging:(UIScrollView *)scrollView{
}
//停止拖动
//-(void)scrollViewDidEndDragging:(UIScrollView *)scrollView willDecelerate:(BOOL)decelerate {
NSLog(@"停止拖动");
//}
//即将开始减速
-(void)scrollViewWillBeginDecelerating:(UIScrollView *)scrollView{
/
}
//放大缩小，使用前先设置放大缩小的倍数限制,只能对Scroller的子视图进行缩放
-(UIView *)viewForZoomingInScrollView:(UIScrollView *)scrollView{
UIImageView *fImageView = [scrollView viewWithTag:1];
return fImageView;
}
//正在缩放
-(void)scrollViewDidZoom:(UIScrollView *)scrollView{
}