UISegmentedControl的用法

UISegmentedControl使用方法

//一次性初始化多个control，items可以是图片或者是文字array，系统会自动控制每个单元的大小
//也可通过正常View的初始化进行
- (instancetype)initWithItems:(NSArray *)items;

//通过UIControl的方法来设置，当改变segments的时候通过事件UIControlEventValueChanged，
//通过action来处理事件
[self.mySegmentedControl addTarget:self
action:@selector(myAction:)
forControlEvents:UIControlEventValueChanged];

//通过索引设置以及获取Title和Image
- (void)setTitle:(NSString *)title forSegmentAtIndex:(NSUInteger)segment;
- (NSString *)titleForSegmentAtIndex:(NSUInteger)segment;
- (void)setImage:(UIImage *)image forSegmentAtIndex:(NSUInteger)segment;
- (UIImage *)imageForSegmentAtIndex:(NSUInteger)segment;

//在索引点插入一个新的标题的segment
- (void)insertSegmentWithTitle:(NSString *)title atIndex:(NSUInteger)segment animated:(BOOL)animated;
//在索引点插入一个新的图片的segment
- (void)insertSegmentWithImage:(UIImage *)image  atIndex:(NSUInteger)segment animated:(BOOL)animated;
- (void)removeSegmentAtIndex:(NSUInteger)segment animated:(BOOL)animated;
- (void)removeAllSegmens;
//Segment的数量
@property(nonatomic,readonly) NSUInteger numberOfSegments;
//被选中的索引
@property(nonatomic) NSInteger selectedSegmentIndex;

//默认值为NO，即点击后保持选中状态，如果设置为YES则，只是短暂的显示选中状态
@property(nonatomic,getter=isMomentary) BOOL momentary;
//通过索引调整每个segment的width，如果设置为0.0则表示自动调整大小，默认为0.0
- (void)setWidth:(CGFloat)width forSegmentAtIndex:(NSUInteger)segment;
- (CGFloat)widthForSegmentAtIndex:(NSUInteger)segment;
//通过索引调整文字或者图片在segment的offset，默认为（0,0）
- (void)setContentOffset:(CGSize)offset forSegmentAtIndex:(NSUInteger)segment;
- (CGSize)contentOffsetForSegmentAtIndex:(NSUInteger)segment;
//设置segment是否能选中
- (void)setEnabled:(BOOL)enabled forSegmentAtIndex:(NSUInteger)segment;
- (BOOL)isEnabledForSegmentAtIndex:(NSUInteger)segment;
//是否根据内容的大小自动调整宽度
@property(nonatomic) BOOL apportionsSegmentWidthsByContent NS_AVAILABLE_IOS(5_0);

//设置UISegmentedControl的边框，分隔线，文字，点击后的颜色
@property(nonatomic,retain) UIColor *tintColor;
//获取和设置背景图片，通过UIControlState和barMetrics的进行设置和获取，主要需要先设置
//UIControlStateNormal才会有效果
- (UIImage *)backgroundImageForState:(UIControlState)state barMetrics:(UIBarMetrics)barMetrics
- (void)setBackgroundImage:(UIImage *)backgroundImage forState:(UIControlState)state barMetrics:(UIBarMetrics)barMetrics
//设置分割线的图片样式，首先需要设置UIControlStateNormal不管左边还是右边，
//设置完成后再调用设置方法，根据UIControlState显示分割线
- (void)setDividerImage:(UIImage *)dividerImage forLeftSegmentState:(UIControlState)leftState rightSegmentState:(UIControlState)rightState barMetrics:(UIBarMetrics)barMetrics
- (UIImage *)dividerImageForLeftSegmentState:(UIControlState)leftState rightSegmentState:(UIControlState)rightState barMetrics:(UIBarMetrics)barMetric        //设置Title的样式，包括 font, text color,  shadow。通过NSAttributedString.h里面的键值对
- (void)setTitleTextAttributes:(NSDictionary *)attributes forState:(UIControlState)state NS_AVAILABLE_IOS(5_0) UI_APPEARANCE_SELECTOR;
- (NSDictionary *)titleTextAttributesForState:(UIControlState)state NS_AVAILABLE_IOS(5_0) UI_APPEARANCE_SELECTOR;
//调整title和image的位置，通过给定的segment
- (void)setContentPositionAdjustment:(UIOffset)adjustment forSegmentType:(UISegmentedControlSegment)leftCenterRightOrAlone barMetrics:(UIBarMetrics)barMetrics NS_AVAILABLE_IOS(5_0) UI_APPEARANCE_SELECTOR;
- (UIOffset)contentPositionAdjustmentForSegmentType:(UISegmentedControlSegment)leftCent