目录[-]
@property(nonatomic)CGPoint contentOffset;
设置滚动的偏移量
@property(nonatomic)CGSize contentSize;
设置滑动区域
@property(nonatomic,assign) id<UIScrollViewDelegate> delegate;
设置UIScrollView的代理
@property(nonatomic,getter=isDirectionalLockEnabled) BOOL directionalLockEnabled;
设置是否锁定,这个属性很有意思,默认为NO,当设置为YES时,你的滚动视图只能同一时间在一个方向上滚动,但是当你从对角线拖动时,是时刻在水平和竖直方向同时滚动的。
@property(nonatomic) BOOL bounces;
设置是否开启回弹效果
@property(nonatomic) BOOL alwaysBounceVertical;
是否开启垂直方向的回弹效果
@property(nonatomic) BOOL alwaysBounceHorizontal;
是否开启水平方向的回弹效果
@property(nonatomic,getter=isPagingEnabled) BOOL pagingEnabled;
是否开启翻页效果
@property(nonatomic,getter=isScrollEnabled) BOOL scrollEnabled;
设置是否可以滑动
@property(nonatomic) BOOL showsHorizontalScrollIndicator;
设置是否显示水平滑动条
@property(nonatomic) BOOL showsVerticalScrollIndicator;
设置是否显示竖直滑动条
@property(nonatomic) UIEdgeInsets scrollIndicatorInsets;
设置滑动条的位置
@property(nonatomic) UIScrollViewIndicatorStyle indicatorStyle;
设置滑动条风格,枚举如下:
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typedef
NS_ENUM(NSInteger, UIScrollViewIndicatorStyle) {
UIScrollViewIndicatorStyleDefault,
//默认
UIScrollViewIndicatorStyleBlack,
//黑色风格
UIScrollViewIndicatorStyleWhite
//白色风格
};
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@property(nonatomic) CGFloat decelerationRate;
设置滑动速度
- (void)setContentOffset:(CGPoint)contentOffset animated:(BOOL)animated;
设置滚动视图内容的偏移量,可以带动画效果
- (void)scrollRectToVisible:(CGRect)rect animated:(BOOL)animated;
设置滚动视图滚动到某个可见区域,可以带动画效果
- (void)flashScrollIndicators;
显示一个短暂的滚动指示器
@property(nonatomic,readonly,getter=isTracking) BOOL tracking;
获取用户是否触及视图内容
@property(nonatomic,readonly,getter=isDragging) BOOL dragging;
获取用户是否开始拖动视图
@property(nonatomic,readonly,getter=isDecelerating) BOOL decelerating;
获取视图是否开始减速(用户停止拖动但视图仍在滚动)
@property(nonatomic) BOOL delaysContentTouches;
设置视图是否延迟处理触摸事件(会将消息传递给子视图)
@property(nonatomic) BOOL canCancelContentTouches;
设置是否给子视图传递取消动作的消息(默认设置为YES,当scrollView触发事件的时候,其子视图不能触发,如果设置为NO,则子视图会继续触发事件)
- (BOOL)touchesShouldBegin:(NSSet *)touches withEvent:(UIEvent *)event inContentView:(UIView *)view;
- (BOOL)touchesShouldCancelInContentView:(UIView *)view;
重写这两个方法可以控制起子视图的事件响应
@property(nonatomic) CGFloat minimumZoomScale;
设置内容最小缩放比例
@property(nonatomic) CGFloat maximumZoomScale;
设置内容最大缩放比例
@property(nonatomic) CGFloat zoomScale;
设置缩放比例
- (void)setZoomScale:(CGFloat)scale animated:(BOOL)animated;
设置缩放比例,可以带动画效果
- (void)zoomToRect:(CGRect)rect animated:(BOOL)animated;
设置缩放显示到某个区域,可以带动画效果
@property(nonatomic) BOOL bouncesZoom;
设置是否可以缩放回弹
@property(nonatomic,readonly,getter=isZooming) BOOL zooming;
获取是否正在缩放模式
@property(nonatomic,readonly,getter=isZoomBouncing) BOOL zoomBouncing;
获取是否当前的缩放比例超出设置的峰值
@property(nonatomic) BOOL scrollsToTop;
设置是否点击状态栏滚动到scrollView的最上端
@property(nonatomic) UIScrollViewKeyboardDismissMode keyboardDismissMode;
设置键盘消失的模式,枚举如下:
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typedef
NS_ENUM(NSInteger, UIScrollViewKeyboardDismissMode) {
UIScrollViewKeyboardDismissModeNone,
UIScrollViewKeyboardDismissModeOnDrag,
//手指滑动视图键盘就会消失
UIScrollViewKeyboardDismissModeInteractive,
//手指滑动视图后可以与键盘交互,上下滑动键盘会跟随手指上下移动
};
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- (void)scrollViewDidScroll:(UIScrollView *)scrollView;
视图已经开始滑动时触发的方法
- (void)scrollViewDidZoom:(UIScrollView *)scrollView;
视图已经开始缩放时触发的方法
- (void)scrollViewWillBeginDragging:(UIScrollView *)scrollView;
视图开始拖动时触发的方法
- (void)scrollViewWillEndDragging:(UIScrollView *)scrollView withVelocity:(CGPoint)velocity targetContentOffset:(inout CGPoint *)targetContentOffset;
- (void)scrollViewDidEndDragging:(UIScrollView *)scrollView willDecelerate:(BOOL)decelerate;
视图拖动结束时触发的方法
- (void)scrollViewWillBeginDecelerating:(UIScrollView *)scrollView;
视图开始减速时触发的方法
- (void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView;
视图减速结束时触发的方法
- (void)scrollViewDidEndScrollingAnimation:(UIScrollView *)scrollView;
视图动画结束时触发的方法,使用set方法设置偏移量后回触发
- (UIView *)viewForZoomingInScrollView:(UIScrollView *)scrollView;
返回进行缩放的视图
- (void)scrollViewWillBeginZooming:(UIScrollView *)scrollView withView:(UIView *)view;
视图内容将要开始缩放时触发的方法
- (void)scrollViewDidEndZooming:(UIScrollView *)scrollView withView:(UIView *)view atScale:(CGFloat)scale;
视图内容结束缩放时触发的方法
- (BOOL)scrollViewShouldScrollToTop:(UIScrollView *)scrollView;
返回yes,开启快捷滚动回顶端,将要滚动时调用
- (void)scrollViewDidScrollToTop:(UIScrollView *)scrollView;
视图快捷滚动回顶端开始动作时调用