02.李南江0527代碼基本控件uiscrollview

1、UIScrollView1. contentOffset默認(rèn)CGPoZero，用來設(shè)置scrollView 的滾動(dòng)偏移量。/ 設(shè)置scrollView的滾動(dòng)偏移量scrollView.contentOffset = CGPoMake(0, 200);2. contentSize默認(rèn)CGSizeZero，用來設(shè)置scrollView 的滾動(dòng)范圍。/ 設(shè)置scrollView的滾動(dòng)范圍scrollView.contentSize = CGSizeMake( self.view.bounds.size.width, self.view.bounds.size.height * 2);3. conte

2、ntInset默認(rèn) UIEdgeInsetsZero，用來設(shè)置 scrollView 的額外滾動(dòng)區(qū)域。/ 設(shè)置scrollView的額外頂部滾動(dòng)區(qū)域:(UIEdgeInsetsMake是逆時(shí)針設(shè)置，上左下右)scrollView.contentInset = UIEdgeInsetsMake(100, 0, 0, 0);4. boun默認(rèn)為 YES，用來設(shè)置 scrollView 的彈簧效果/ 取消scrollView的彈簧效果scrollView.boun= NO;5.pagingEnabled默認(rèn)為 NO，用來設(shè)置 scrollView 是否開啟分頁(yè)./ 開啟分頁(yè)scrollVieging

3、Enabled = YES;6.scrollEnabled默認(rèn)為 YES，用來設(shè)置 scrollView 是否允許滾動(dòng)./ scrollView滾動(dòng)scrollView.scrollEnabled = NO;7.showsHorizontalScrollIndicator默認(rèn)為 YES，用來設(shè)置 scrollView 是否顯示水平滾動(dòng)條./ 隱藏水平滾動(dòng)條scrollView.showsHorizontalScrollIndicator = NO;8.showsVerticalScrollIndicator默認(rèn)為 YES，用來設(shè)置 scrollView 是否顯示垂直滾動(dòng)條./ 隱藏垂直滾動(dòng)條s

4、crollView.showsVerticalScrollIndicator = NO;9.minimumZoomScale默認(rèn) 1.0，用來設(shè)置 scrollView 最少縮小比例./ 設(shè)置scrollView允許子視圖的最大放大比例scrollView.umZoomScale = 2;10.umZoomScale默認(rèn) 1.0，用來設(shè)置 scrollView 最大放大比例./ 設(shè)置scrollView允許子視圖的最小縮放比例scrollView.minimumZoomScale = 0.8;11. delegate類要遵守 UIScrollViewDelegate 協(xié)議11.1 當(dāng) scro

5、llView 的偏移量一改變就會(huì)調(diào)用這個(gè)方法，即滾動(dòng) scrollView 就會(huì)調(diào)用。- (void)scrollViewDidScroll:(UIScrollView *)scrollView;11.2 當(dāng) scrollView 縮放時(shí)，就會(huì)調(diào)用這個(gè)方法- (void)scrollViewDidZoom:(UIScrollView *)scrollView NS_AVAILABLE_IOS(3_2);11.3 即將拖拽的時(shí)候調(diào)用.- (void)scrollViewWillBeginDragging:(UIScrollView *)scrollView;scrollView.delegate

6、 = self;scrollView 的是我， 這個(gè)方法在 UIScrollViewDelegate 里所以要遵守UIScrollViewDelegate 這個(gè)協(xié)議11.4 即將停止拖拽的時(shí)候調(diào)用- (void)scrollViewWillEndDragging:(UIScrollView *)scrollView withVelocity:(CGPo)velocityContentOffset:(inoGPo*)ContentOffset NS_AVAILABLE_IOS(5_0);11.5 停止拖拽的時(shí)候調(diào)用。- (void)scrollViewDidEndDragging:(UIScro

7、llView *)scrollView willDecelerate:(BOOL)decelerate;11.6 即將完成的時(shí)候調(diào)用。- (void)scrollViewWillBeginDecelerating:(UIScrollView *)scrollView;11.7完成的時(shí)候調(diào)用- (void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView;11.8 返回需要縮放哪個(gè)視圖，這個(gè)視圖必須是 scrollView 里的子視圖。- (UIView *)viewForZoomingInScrollView:(UIScrollVi

8、ew *)scrollView;/：- (UIView *)viewForZoomingInScrollView:(UIScrollView *)scrollViewreturn scrollView.subviews0;11.9 scrollView 即將開始縮放- (void)scrollViewWillBeginZooming:(UIScrollView *)scrollView withView:(UIView *)viewNS_AVAILABLE_IOS(3_2);11.10 scrollView 完成縮放- (void)scrollViewDidEndZooming:(UIScro

9、llView *)scrollView withView:(UIView *)view atScale:(float)scale;11.11 沒有開啟分頁(yè)的時(shí)候，方法調(diào)用順序：scrollViewWillBeginDragging scrollViewDidScroll scrollViewWillEndDragging scrollViewDidEndDragging11.12 開啟分頁(yè)的時(shí)候，方法調(diào)用順序scrollViewWillBeginDragging scrollViewDidScroll scrollViewDidEndDragging scrollViewWillBeginDecelerating scrollViewDidScroll scrollViewDidEndDecelerating12. directionalLockEnabled指定控件是否只能在一個(gè)方向上滾動(dòng)13. decelerationRate改變scrollerView 的點(diǎn)位置14. tracking當(dāng)前目標(biāo)是否正在被15. dragging改變scro