iOS封装倒计时按钮HLCountDownButton示例详解

/// 样式，默认HLCountDownButtonTypeNormal
@property (nonatomic, assign) IBInspectable NSInteger hlType UI_APPEARANCE_SELECTOR;
/// 是否可用，默认YES
@property (nonatomic, assign) IBInspectable BOOL hlEnabled UI_APPEARANCE_SELECTOR;
/// 正常标题，默认“获取验证码”
@property (nonatomic, copy) IBInspectable NSString *normalTitle UI_APPEARANCE_SELECTOR;
/// 重新获取标题，默认“获取验证码”
@property (nonatomic, copy) IBInspectable NSString *againTitle UI_APPEARANCE_SELECTOR;
/// 发送中标题格式，默认“%ds 后获取”
@property (nonatomic, copy) IBInspectable NSString *sendingTitleFormat UI_APPEARANCE_SELECTOR;
/// 高亮颜色，默认0x4181FE
@property (nonatomic, strong) IBInspectable UIColor *highlightedColor UI_APPEARANCE_SELECTOR;
/// 非高亮颜色，默认0xd2d2d2
@property (nonatomic, strong) IBInspectable UIColor *disabledColor UI_APPEARANCE_SELECTOR;
/// 圆角半径，默认4
@property (nonatomic, assign) IBInspectable CGFloat cornerRadius UI_APPEARANCE_SELECTOR;
/// 边框宽度，默认0.5
@property (nonatomic, assign) IBInspectable CGFloat borderWidth UI_APPEARANCE_SELECTOR;
/// 倒计时长，默认60s
@property (nonatomic, assign) IBInspectable NSInteger countDownSize UI_APPEARANCE_SELECTOR;

typedef NS_ENUM(NSInteger, HLCountDownButtonType) {
    HLCountDownButtonTypeNormal,            ///< 无背景，无边框
    HLCountDownButtonTypeOnlyLine,          ///< 无背景，有边框
    HLCountDownButtonTypeOnlyBackground,    ///< 有背景，无边框
};

__weak typeof(self) weakSelf = self;
self.countDownButton.startBlock = ^(){
    // TODO 点击了倒计时按钮，这里可进行发送验证码操作
    // [weakSelf sendCodeMsg];
};

[HLCountDownButton appearance].highlightedColor = [UIColor redColor];