ScrollView分页-无限循环
Posted 华少不思议
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#import "XMGInfiniteScrollView.h"
static int const ImageViewCount = 3;
@interface XMGInfiniteScrollView()
@property (weak, nonatomic) UIScrollView *scrollView;
@property (weak, nonatomic) NSTimer *timer;
@[email protected] XMGInfiniteScrollView
- (instancetype)initWithFrame:(CGRect)frame
{ if (self = [super initWithFrame:frame]) { // 滚动视图 UIScrollView *scrollView = [[UIScrollView alloc] init]; scrollView.showsHorizontalScrollIndicator = NO; scrollView.showsVerticalScrollIndicator = NO; scrollView.pagingEnabled = YES;
scrollView.bounces = NO;
scrollView.delegate = self;
[self addSubview:scrollView];
self.scrollView = scrollView;
// 图片控件
for (int i = 0; i- (void)scrollViewDidScroll:(UIScrollView *)scrollView
{ // 找出最中间的那个图片控件
NSInteger page = 0; CGFloat minDistance = MAXFLOAT;
for (int i = 0; i= self.pageControl.numberOfPages)
{
index = 0;
}
imageView.tag = index;
imageView.image = self.images[index];
}
// 设置偏移量在中间
if (self.isScrollDirectionPortrait) {
self.scrollView.contentOffset = CGPointMake(0, self.scrollView.frame.size.height);
} else {
self.scrollView.contentOffset = CGPointMake(self.scrollView.frame.size.width, 0);
}
}
#pragma mark - 定时器处理
- (void)startTimer
{
NSTimer *timer = [NSTimer timerWithTimeInterval:2 target:self selector:@selector(next) userInfo:nil repeats:YES];
[[NSRunLoop mainRunLoop] addTimer:timer forMode:NSRunLoopCommonModes];
self.timer = timer;
}
- (void)stopTimer
{
[self.timer invalidate];
self.timer = nil;
}
- (void)next
{
if (self.isScrollDirectionPortrait) {
[self.scrollView setContentOffset:CGPointMake(0, 2 * self.scrollView.frame.size.height) animated:YES];
} else {
[self.scrollView setContentOffset:CGPointMake(2 * self.scrollView.frame.size.width, 0) animated:YES];
}
}
@end
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