#import"RootViewController.h"
#define VIEW_WIDTH self.view.frame.size.width
#define VIEW_HEIGHT self.view.frame.size.height
@interfaceRootViewController ()
@property(nonatomic,retain) UIScrollView *scrollView;
@property(nonatomic,retain) UIPageControl *page;
@property(nonatomic,retain) NSTimer *timer;
@end
// scrollView
self.scrollView = [[UIScrollView alloc] initWithFrame:self.view.frame];
self.scrollView.backgroundColor = [UIColor yellowColor];
[self.view addSubview:self.scrollView];
[_scrollView release];
//代理人
self.scrollView.delegate =self;
//滾動(dòng)范圍
self.scrollView.contentSize = CGSizeMake(VIEW_WIDTH *7, VIEW_HEIGHT);
//整頁
self.scrollView.pagingEnabled =YES;
//添加圖片
for(NSInteger i =1; i <=6; i++) {
UIImageView *imgView = [[UIImageView alloc] initWithFrame:CGRectMake((i-1)*VIEW_WIDTH,0, VIEW_WIDTH, VIEW_HEIGHT)];
//圖片名
NSString *name = [NSString stringWithFormat:@"S%ld.jpg", i];
imgView.image = [UIImage imageNamed:name];
[self.scrollView addSubview:imgView];
[imgView release];
//在最后添加最后一頁
UIImageView *img= [[UIImageView ?alloc] initWithFrame:CGRectMake(VIEW_WIDTH*6,0, VIEW_WIDTH, VIEW_HEIGHT)];
img.image = [UIImage imageNamed:@"S1.jpg"];
[self.scrollView addSubview:img];
[img release];
}
// UIPageControl
self.page = [[UIPageControl alloc] initWithFrame:CGRectMake(0,0,150,30)];
self.page.backgroundColor = [UIColor blackColor];
//添加父視圖
//加載self.view保證視圖滑動(dòng)時(shí)依然存在
[self.view addSubview:self.page];
[_page release];
self.page.numberOfPages =6;
self.page.center = CGPointMake(self.view.center.x, VIEW_HEIGHT-50);
[self.page addTarget:selfaction:@selector(page:) forControlEvents:UIControlEventValueChanged];
self.page.tag =1000;
//定時(shí)器實(shí)現(xiàn)自動(dòng)輪播
//多長時(shí)間翻頁
self.timer = [NSTimer scheduledTimerWithTimeInterval:1target:selfselector:@selector(autoRoll) userInfo:nilrepeats:YES];
}
/*******************************************************************/
//當(dāng)手指拖拽事停止定時(shí)器
-(void)scrollViewWillBeginDecelerating:(UIScrollView *)scrollView{
[self.timer invalidate];
}
//定時(shí)器方法
-(void)autoRoll{
//翻頁所用時(shí)間
[UIView animateWithDuration:0.5animations:^{
//當(dāng)前x+圖片寬度
self.scrollView.contentOffset = CGPointMake(self.scrollView.contentOffset.x + VIEW_WIDTH,0);
}completion:^(BOOLfinished) {
//完成動(dòng)畫之后要做的事
if(self.scrollView.contentOffset.x/VIEW_WIDTH ==6) {
self.scrollView.contentOffset = CGPointZero;
}
}];
}
//當(dāng)使用定時(shí)器滾動(dòng)時(shí)沒有拖拽和減速階段需要在scrollViewDidScroll方法中修改
-(void)scrollViewDidScroll:(UIScrollView *)scrollView{
self.page.currentPage = scrollView.contentOffset.x/VIEW_WIDTH;
if(scrollView.contentOffset.x/VIEW_WIDTH ==7) {
scrollView.contentOffset ?= CGPointZero;
}
}
//當(dāng)手指離開屏幕(結(jié)束減速時(shí))重新創(chuàng)建定時(shí)器
//結(jié)束減速
- (void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView
{
//剛滾動(dòng)到最后一頁跳回第一頁
//修改小圓點(diǎn)
self.page.currentPage = scrollView.contentOffset.x/VIEW_WIDTH;
if(scrollView.contentOffset.x/VIEW_WIDTH ==6) {
scrollView.contentOffset ?= CGPointZero;
}
//新建定時(shí)器
//[self creatTimer];
//1秒之后執(zhí)行[self creatTimer]
[selfperformSelector:@selector(creatTimer) withObject:nilafterDelay:0.5];
}
-(void)creatTimer{
self.timer = [NSTimer scheduledTimerWithTimeInterval:1target:selfselector:@selector(autoRoll) userInfo:nilrepeats:YES];
}
#pragma mark - page方法
- (void)page:(UIPageControl *)page
{
//通過動(dòng)畫滾動(dòng)
[UIView animateWithDuration:0.5animations:^{
self.scrollView.contentOffset = CGPointMake(VIEW_WIDTH*page.currentPage,0);
}];
}
