第十一篇 － UIPageControl

初始化

UIPageControl *page = [[UIPageControl alloc] init];

你需要给她设置 numberOfPages 属性 不为0。不然，看不见

　

//NS_ASSUME_NONNULL_BEGIN
//
//NS_CLASS_AVAILABLE_IOS(2_0) @interface UIPageControl : UIControl
//
//@property(nonatomic) NSInteger numberOfPages;          // default is 0
//@property(nonatomic) NSInteger currentPage;            // default is 0. value pinned to 0..numberOfPages-1
//
//设置为yes时，且numberOfPages＝1时，空间时不显示的。可能没有被创建
//@property(nonatomic) BOOL hidesForSinglePage;          // hide the the indicator if there is only one page. default is NO
//
//如果设置为yes，那么，当你点击小圆点时，不会立即切换。必须调用updateCurrentPageDisplay
//@property(nonatomic) BOOL defersCurrentPageDisplay;    // if set, clicking to a new page won't update the currently displayed page until -updateCurrentPageDisplay is called. default is NO
//- (void)updateCurrentPageDisplay;                      // update page display to match the currentPage. ignored if defersCurrentPageDisplay is NO. setting the page value directly will update immediately
//
//- (CGSize)sizeForNumberOfPages:(NSInteger)pageCount;   // returns minimum size required to display dots for given page count. can be used to size control if page count could change
//
//没有选中的颜色
//@property(nullable, nonatomic,strong) UIColor *pageIndicatorTintColor NS_AVAILABLE_IOS(6_0) UI_APPEARANCE_SELECTOR;
// 当前选中圆点的颜色
//@property(nullable, nonatomic,strong) UIColor *currentPageIndicatorTintColor NS_AVAILABLE_IOS(6_0) UI_APPEARANCE_SELECTOR;
//
//@end