iOS基础控件之 UIScrollView

1     // 设置滚动范围，这里用图片实际大小
2     self.scrollView.contentSize = self.imageView.frame.size;

1     // 表示滚动位置，相对于初始位置
2     @property(nonatomic)         CGPoint                      contentOffset;
3    
4     // 表示尺寸、滚动范围
5     @property(nonatomic)         CGSize                       contentSize;
6    
7     // 这个属性能够增加四周额外的滚动范围
8     @property(nonatomic)         UIEdgeInsets                 contentInset;

1     // 增加边距显示，参数分别是top, left, bottom, right
2     self.scrollView.contentInset = UIEdgeInsetsMake(10, 20, 40, 80);

1     // 移动到(200, 300)位置
2     self.scrollView.contentOffset = CGPointMake(200, 300);

 1     // 是否需要弹簧效果
 2     @property(nonatomic)         BOOL                        bounces;
 3    
 4     // 是否能够滚动
 5     @property(nonatomic,getter=isScrollEnabled) BOOL          scrollEnabled;
 6    
 7     // 显示水平滚动条
 8     @property(nonatomic)         BOOL                        showsHorizontalScrollIndicator;
 9    
10     // 显示垂直滚动条
11     @property(nonatomic)         BOOL                        showsVerticalScrollIndicator;

1 @property(nonatomic,assign) id<UIScrollViewDelegate>      delegate; // default nil. weak reference

 1 - (void)scrollViewWillBeginDragging:(UIScrollView *)scrollView {
 2      NSLog(@"开始拖曳");
 3 }
 4 
 5 - (void)scrollViewDidScroll:(UIScrollView *)scrollView {
 6     NSLog(@"正在拖曳");
 7 }
 8 
 9 - (void)scrollViewDidEndDragging:(UIScrollView *)scrollView willDecelerate:(BOOL)decelerate {
10     NSLog(@"结束拖曳");
11 }

 1 - (void)scrollViewWillBeginZooming:(UIScrollView *)scrollView withView:(UIView *)view {
 2     NSLog(@"开始缩放");
 3 }
 4 
 5 - (void)scrollViewDidZoom:(UIScrollView *)scrollView {
 6     NSLog(@"正在缩放");
 7 }
 8 
 9 - (void)scrollViewDidEndZooming:(UIScrollView *)scrollView withView:(UIView *)view atScale:(CGFloat)scale {
10     NSLog(@"结束缩放");
11 }

1 - (void)scrollViewWillBeginDecelerating:(UIScrollView *)scrollView {
2     NSLog(@"拖曳完成后减速开始");
3 }
4 
5 - (void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView {
6     NSLog(@"拖曳完成后减速完成");
7 }

1     // 捏合手势调用的方法
2     - (UIView *)viewForZoomingInScrollView:(UIScrollView *)scrollView;

1 // 图片
2 @property (weak, nonatomic) IBOutlet UIImageView *imageView;
3  
4 // 缩放手势调用的方法
5 - (UIView *)viewForZoomingInScrollView:(UIScrollView *)scrollView {
6     return self.imageView; // 需要放大的ImageView
7 }

1     self.scrollView.maximumZoomScale = 2.0;
2     self.scrollView.minimumZoomScale = 0.1;

 1     // 总页数
 2     @property(nonatomic) NSInteger numberOfPages;          // default is 0
 3     // 当前页码
 4     @property(nonatomic) NSInteger currentPage;
 5     // 只有一页的时候隐藏页码
 6     @property(nonatomic) BOOL hidesForSinglePage;          // hide the the indicator if there is only one page. default is NO
 7     // 其他页码指示颜色
 8     @property(nonatomic,retain) UIColor *pageIndicatorTintColor;
 9     // 当前页码指示颜色
10     @property(nonatomic,retain) UIColor *currentPageIndicatorTintColor;

1 + (NSTimer *)timerWithTimeInterval:(NSTimeInterval)ti target:(id)aTarget selector:(SEL)aSelector userInfo:(id)userInfo repeats:(BOOL)yesOrNo;
2  
3 - (void)fire;

1 + (NSTimer *)scheduledTimerWithTimeInterval:(NSTimeInterval)ti invocation:(NSInvocation *)invocation repeats:(BOOL)yesOrNo;

1     // 永久终止工作
2     - (void)invalidate;