////  BlockView.h//  Block////  Created by YouXianMing on 15/1/14.//  Copyright (c) 2015年 YouXianMing. All rights reserved.//#import <UIKit/UIKit.h>@class BlockView;/** 定义枚举值 */typedef enum : NSUInteger {    LEFT_BUTTON = 0x19871220,    RIGHT_BUTTON,} BUTTON_FLAG;/** *  定义block * *  @param flag      枚举值 *  @param blockView 当前的blockView */typedef void (^ButtonEvent)(BUTTON_FLAG flag, BlockView *blockView);@interface BlockView : UIView@property (nonatomic, copy)   ButtonEvent   buttonEvent; // 作为属性的block@property (nonatomic, strong) NSString     *leftTitle;@property (nonatomic, strong) NSString     *rightTitle;@end

////  BlockView.m//  Block////  Created by YouXianMing on 15/1/14.//  Copyright (c) 2015年 YouXianMing. All rights reserved.//#import "BlockView.h"@interface BlockView ()@property (nonatomic, strong) UIButton  *leftButton;@property (nonatomic, strong) UIButton  *rightButton;@end@implementation BlockView- (instancetype)initWithFrame:(CGRect)frame {    self = [super initWithFrame:frame];    if (self) {                // 获取尺寸相关内容        CGFloat width       = frame.size.width;        CGFloat height      = frame.size.height;        CGFloat buttonWidth = width / 2.f;                // 初始化按钮        self.leftButton     = [[UIButton alloc] initWithFrame:CGRectMake(0, 0, buttonWidth, height)];        self.leftButton.tag = LEFT_BUTTON;        [self.leftButton setTitleColor:[UIColor blueColor] forState:UIControlStateNormal];        [self.leftButton setTitleColor:[UIColor redColor]  forState:UIControlStateHighlighted];        [self.leftButton setTitleColor:[UIColor grayColor] forState:UIControlStateDisabled];        [self.leftButton addTarget:self                            action:@selector(buttonEvents:)                  forControlEvents:UIControlEventTouchUpInside];        self.leftButton.titleLabel.font = [UIFont fontWithName:@"HelveticaNeue-Thin" size:12.f];        [self addSubview:self.leftButton];                self.rightButton     = [[UIButton alloc] initWithFrame:CGRectMake(buttonWidth, 0, buttonWidth, height)];        self.rightButton.tag = RIGHT_BUTTON;        [self.rightButton setTitleColor:[UIColor blueColor] forState:UIControlStateNormal];        [self.rightButton setTitleColor:[UIColor redColor]  forState:UIControlStateHighlighted];        [self.rightButton setTitleColor:[UIColor grayColor] forState:UIControlStateDisabled];        [self.rightButton addTarget:self                             action:@selector(buttonEvents:)                   forControlEvents:UIControlEventTouchUpInside];        self.rightButton.titleLabel.font = [UIFont fontWithName:@"HelveticaNeue-Thin" size:12.f];        [self addSubview:self.rightButton];            }    return self;}- (void)buttonEvents:(UIButton *)button {    // 如果有block值，则从block获取值    if (self.buttonEvent) {        self.buttonEvent(button.tag, self);    }}#pragma mark - 重写setter，getter方法@synthesize leftTitle = _leftTitle;- (void)setLeftTitle:(NSString *)leftTitle {    _leftTitle = leftTitle;    [self.leftButton setTitle:leftTitle forState:UIControlStateNormal];}- (NSString *)leftTitle {    return _leftTitle;}@synthesize rightTitle = _rightTitle;- (void)setRightTitle:(NSString *)rightTitle {    _rightTitle = rightTitle;    [self.rightButton setTitle:rightTitle forState:UIControlStateNormal];}- (NSString *)rightTitle {    return _rightTitle;}@end

////  ViewController.m//  Block////  Created by YouXianMing on 15/1/14.//  Copyright (c) 2015年 YouXianMing. All rights reserved.//#import "ViewController.h"#import "BlockView.h"@interface ViewController ()@end@implementation ViewController- (void)viewDidLoad {    [super viewDidLoad];     BlockView *blockView        = [[BlockView alloc] initWithFrame:CGRectMake(0, 0, 200, 30)];    blockView.layer.borderWidth = 1.f;    blockView.leftTitle         = @"YouXianMing";    blockView.rightTitle        = @"NoZuoNoDie";        // 从block中获取到事件    blockView.buttonEvent       = ^(BUTTON_FLAG flag, BlockView *blockView) {        NSLog(@"%lu", flag);    };        blockView.center            = self.view.center;        [self.view addSubview:blockView];}@end

////  BlockView.h//  Block////  Created by YouXianMing on 15/1/14.//  Copyright (c) 2015年 YouXianMing. All rights reserved.//#import <UIKit/UIKit.h>@class BlockView;/** 定义枚举值 */typedef enum : NSUInteger {    LEFT_BUTTON = 0x19871220,    RIGHT_BUTTON,} BUTTON_FLAG;/** *  定义block * *  @param flag      枚举值 *  @param blockView 当前的blockView */typedef void (^ButtonEvent)(BUTTON_FLAG flag, BlockView *blockView);@interface BlockView : UIView@property (nonatomic, strong) NSString     *leftTitle;@property (nonatomic, strong) NSString     *rightTitle;/** *  定义成方法来实现 * *  @param buttonEvent block */- (void)buttonEvent:(ButtonEvent)buttonEvent;@end

////  BlockView.m//  Block////  Created by YouXianMing on 15/1/14.//  Copyright (c) 2015年 YouXianMing. All rights reserved.//#import "BlockView.h"@interface BlockView ()@property (nonatomic, strong) UIButton    *leftButton;@property (nonatomic, strong) UIButton    *rightButton;@property (nonatomic, copy)   ButtonEvent  buttonEvent;@end@implementation BlockView- (instancetype)initWithFrame:(CGRect)frame {    self = [super initWithFrame:frame];    if (self) {                // 获取尺寸相关内容        CGFloat width       = frame.size.width;        CGFloat height      = frame.size.height;        CGFloat buttonWidth = width / 2.f;                // 初始化按钮        self.leftButton     = [[UIButton alloc] initWithFrame:CGRectMake(0, 0, buttonWidth, height)];        self.leftButton.tag = LEFT_BUTTON;        [self.leftButton setTitleColor:[UIColor blueColor] forState:UIControlStateNormal];        [self.leftButton setTitleColor:[UIColor redColor]  forState:UIControlStateHighlighted];        [self.leftButton setTitleColor:[UIColor grayColor] forState:UIControlStateDisabled];        [self.leftButton addTarget:self                            action:@selector(buttonEvents:)                  forControlEvents:UIControlEventTouchUpInside];        self.leftButton.titleLabel.font = [UIFont fontWithName:@"HelveticaNeue-Thin" size:12.f];        [self addSubview:self.leftButton];                self.rightButton     = [[UIButton alloc] initWithFrame:CGRectMake(buttonWidth, 0, buttonWidth, height)];        self.rightButton.tag = RIGHT_BUTTON;        [self.rightButton setTitleColor:[UIColor blueColor] forState:UIControlStateNormal];        [self.rightButton setTitleColor:[UIColor redColor]  forState:UIControlStateHighlighted];        [self.rightButton setTitleColor:[UIColor grayColor] forState:UIControlStateDisabled];        [self.rightButton addTarget:self                             action:@selector(buttonEvents:)                   forControlEvents:UIControlEventTouchUpInside];        self.rightButton.titleLabel.font = [UIFont fontWithName:@"HelveticaNeue-Thin" size:12.f];        [self addSubview:self.rightButton];    }    return self;}- (void)buttonEvents:(UIButton *)button {    if (self.buttonEvent) {        self.buttonEvent(button.tag, self);    }}- (void)buttonEvent:(ButtonEvent)buttonEvent {    // 初始化block    self.buttonEvent = ^(BUTTON_FLAG flag, BlockView *blockView) {        if (buttonEvent) {            buttonEvent(flag, blockView);        }    };}#pragma mark - 重写setter，getter方法@synthesize leftTitle = _leftTitle;- (void)setLeftTitle:(NSString *)leftTitle {    _leftTitle = leftTitle;    [self.leftButton setTitle:leftTitle forState:UIControlStateNormal];}- (NSString *)leftTitle {    return _leftTitle;}@synthesize rightTitle = _rightTitle;- (void)setRightTitle:(NSString *)rightTitle {    _rightTitle = rightTitle;    [self.rightButton setTitle:rightTitle forState:UIControlStateNormal];}- (NSString *)rightTitle {    return _rightTitle;}@end

////  ViewController.m//  Block////  Created by YouXianMing on 15/1/14.//  Copyright (c) 2015年 YouXianMing. All rights reserved.//#import "ViewController.h"#import "BlockView.h"@interface ViewController ()@end@implementation ViewController- (void)viewDidLoad {    [super viewDidLoad];     BlockView *blockView        = [[BlockView alloc] initWithFrame:CGRectMake(0, 0, 200, 30)];    blockView.layer.borderWidth = 1.f;    blockView.leftTitle         = @"YouXianMing";    blockView.rightTitle        = @"NoZuoNoDie";        [blockView buttonEvent:^(BUTTON_FLAG flag, BlockView *blockView) {        NSLog(@"%lu", flag);    }];        blockView.center            = self.view.center;        [self.view addSubview:blockView];}@end