//滾動視圖，單其本身也是一個獨立的視圖
myscrollView = [[UIScrollView alloc]initWithFrame:self.view.bounds];
myscrollView.backgroundColor = [UIColor grayColor];
//指定滾動視圖的滾動尺寸
//如果想讓滾動視圖正常工作，必須要指定當前滾動視圖的滾動尺寸大于2個以上當前屏幕尺寸
myscrollView.contentSize = CGSizeMake(self.view.bounds.size.width *2, self.view.bounds.size.height);
//指定滾動視圖滾動方式為分頁滾動
myscrollView.pagingEnabled = YES;
//隱藏滾動條
myscrollView.showsHorizontalScrollIndicator = NO;
myscrollView.showsVerticalScrollIndicator = NO;
//設置是否可以滾動
//? ? scrollView.scrollEnabled = NO;
//關閉滾動視圖回彈效果
//? ? scrollView.bounces = NO;
//設置滾動條樣式
//? ? scrollView.indicatorStyle = UIScrollViewIndicatorStyleBlack;
//? ? scrollView.scrollIndicatorInsets = UIEdgeInsetsMake(0, 50, 0, 0);
//指定scrollView的代理為當前類的實例
myscrollView.delegate = self;
[self.view addSubview:myscrollView];
UIImageView * imageView1 = [[UIImageView alloc]initWithFrame:CGRectMake(0, 0, 320, 568)];
imageView1.image = [UIImage imageNamed:@"記私密"];
[myscrollView addSubview:imageView1];
UIImageView * imageView2 = [[UIImageView alloc]initWithFrame:CGRectMake(320, 0, 320, 568)];
imageView2.image = [UIImage imageNamed:@"玩游戲"];
[myscrollView addSubview:imageView2];
//創建分頁指示器
pageControl = [[UIPageControl alloc]initWithFrame:CGRectMake(0, 553, 320, 15)];
//指定pageControl相關參數
//控制頁面下圓點數
pageControl.numberOfPages = 2;
//設置背景顏色
pageControl.backgroundColor = [UIColor grayColor];
//分頁指示器 行為的調用
[pageControl addTarget:self action:@selector(pageControlClick:) forControlEvents:UIControlEventValueChanged];
[self.view addSubview:pageControl];
//
pageCount = 0;
// NSTimer 計時器
? [NSTimer scheduledTimerWithTimeInterval:2 target:self selector:@selector(imageViewScroll:) userInfo:nil repeats:YES];
}
//滾動視圖開始滾動時執行
-(void)scrollViewDidScroll:(UIScrollView *)scrollView
{
NSLog(@"滾動");
//輸出當前滾動視圖偏移量
//? ? NSLog(@"%lf",scrollView.contentOffset.x);
if ((int)scrollView.contentOffset.x % (int)self.view.bounds.size.width == 0) {
pageControl.currentPage = (int)scrollView.contentOffset.x / (int)self.view.bounds.size.width;
}
}
//計時器執行方法
-(void)imageViewScroll:(id)sender
{
if (pageCount == 1) {
pageCount = 0;
}else{
pageCount++;
}
[myscrollView setContentOffset:CGPointMake(self.view.bounds.size.width *pageCount, 0) animated:YES];
pageControl.currentPage = pageCount;
}
//分頁指示器的方法
-(void)pageControlClick:(UIPageControl *)sender
{
NSLog(@"%ld",sender.currentPage);
//通過offset偏移量來修改當前滾動視圖的滾動位置
[myscrollView setContentOffset:CGPointMake(self.view.bounds.size.width * sender.currentPage, 0) animated:YES];
}
