UIScrollVIew 滾動視圖內容總結：
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view.
// 滾動視圖
UIScrollView *scrollView = [[UIScrollView alloc] initWithFrame:CGRectMake(20, 20, 280, 440)];
scrollView.backgroundColor = [UIColor redColor];
// 設定滾動內容的範圍（CGSize）
scrollView.contentSize = CGSizeMake(2800, 0); // 橫縱 座標
// 關掉邊緣的彈動搞效果
// srollView.bounces = NO;
// 偏移量(CGPoint)
// srollView.contentOffset = CGPointMake(-100, -100);
// 內容距離上 左 下 右邊緣的距離
scrollView.contentInset = UIEdgeInsetsMake(0, 0, 0, 0);
// 滑動到頂部
scrollView.scrollsToTop = YES;
// 整屏翻動
scrollView.pagingEnabled = YES;
// srollView能不能滾動
scrollView .scrollEnabled = YES; // NO：不能滾動
// 是否顯示橫向的滾動條
scrollView.showsHorizontalScrollIndicator = YES;
// 2.將viewController設置爲ScrollView的 代理人
scrollView.delegate = self;
// scrollView的縮放
// 縮放：1. 設置scrollView的縮放範圍
scrollView.minimumZoomScale = 0.5; // 最小範圍
scrollView.maximumZoomScale = 2; // 最大範圍
// 設置縮放時是否彈動
scrollView.bouncesZoom = YES;
[self.view addSubview:scrollView];
[scrollView release];
UIImageView *imageView = [[UIImageView alloc] initWithFrame:CGRectMake(20, 20, 240, 400)];
imageView.image = [UIImage imageNamed:@"1.JPG"];
[scrollView addSubview:imageView];
[imageView release];
UIImageView *imageView0 = [[UIImageView alloc] initWithFrame:CGRectMake(300, 20, 240, 400)];
imageView0.image = [UIImage imageNamed:@"2.JPG"];
[scrollView addSubview:imageView0];
[imageView0 release];
UIImageView *imageView1 = [[UIImageView alloc] initWithFrame:CGRectMake(580, 20, 240, 400)];
imageView1.image = [UIImage imageNamed:@"3.JPG"];
[scrollView addSubview:imageView1];
[imageView1 release];
UIImageView *imageView2 = [[UIImageView alloc] initWithFrame:CGRectMake(580, 20, 240, 400)];
imageView2.image = [UIImage imageNamed:@"4.JPG"];
[scrollView addSubview:imageView2];
[imageView2 release];
UIImageView *imageView3 = [[UIImageView alloc] initWithFrame:CGRectMake(860, 20, 240, 400)];
imageView3.image = [UIImage imageNamed:@"5.JPG"];
[scrollView addSubview:imageView3];
[imageView3 release];
UIImageView *imageView4 = [[UIImageView alloc] initWithFrame:CGRectMake(1140, 20, 240, 400)];
imageView4.image = [UIImage imageNamed:@"6.JPG"];
[scrollView addSubview:imageView4];
[imageView4 release];
// UIImageView *imageView5 = [[UIImageView alloc] initWithFrame:CGRectMake(1420, 20, 240, 400)];
//
// [scrollView addSubview:imageView5];
// [imageView5 release];
UIPageControl *pageControl = [[UIPageControl alloc] initWithFrame:CGRectMake(20, 420, 280, 62)];
// pageControl.backgroundColor =[UIColor clearColor];
// 顯示多少個點點
pageControl.numberOfPages = 5;
pageControl.currentPageIndicatorTintColor = [UIColor blackColor];
// 給pageControl加一個響應方法
[pageControl addTarget:self action:@selector(pageControlAction:)forControlEvents:UIControlEventValueChanged];
[self.view addSubview:pageControl];
[pageControl release];
// 方便在其他方法中調用pageControl
self.page = pageControl;
}
- (void)pageControlAction:(UIPageControl *)pageControl
{
NSLog(@"%d", pageControl.currentPage);
}
// 縮放：2. 設置一個視圖 隨着scrollView放大縮小
- (UIView *)viewForZoomingInScrollView:(UIScrollView *)scrollView
{
return [scrollView.subviews firstObject]; // 把第一個子視圖隨着scrollView縮放
}
// 3. 實現相對應的代理方法（協議方法）
- (void)scrollViewDidSroll:(UIScrollView *)scrollView
{
// // 只要srollView滾動 就會一直觸發這個方法
// NSLog(@"%s", __FUNCTION__);
// // srollView 的偏移量變化
// NSLog(@"偏移量變化: %@", NSStringFromCGPoint(scrollView.contentOffset));
//
// // 判斷scrollView當前的頁數
// // 偏移量.x / srollView寬度
// int pageNumber = scrollView.contentOffset.x / scrollView.frame.size.width;
// NSLog(@"頁數: %d", pageNumber);
// 當前scrollView滾動到當前頁數
self.page.currentPage = scrollView.contentOffset.x / scrollView.frame.size.width;
}
// 開始拖拽的時候
- (void)scrollViewWillBeginDragging:(UIScrollView *)scrollView
{
NSLog(@"開始拖拽:%s", __FUNCTION__);
}
// 結束拖拽的時候
- (void)scrollViewDidEndDragging:(UIScrollView *)scrollView willDecelerate:(BOOL)decelerate
{
NSLog(@"結束拖拽:%s", __FUNCTION__);
}
// 開始減速的時候
- (void)scrollViewWillBeginDecelerating:(UIScrollView *)scrollView
{
NSLog(@"開始減速:%s", __FUNCTION__);
}
// 結束減速的時候
- (void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView
{
NSLog(@"結束減速:%s", __FUNCTION__);
}