UIButton的两种block传值方式
方式1 - 作为属性来传值
BlockView.h 与 BlockView.m
//// BlockView.h// Block//// Created by YouXianMing on 15/1/14.// Copyright (c) 2015年 YouXianMing. All rights reserved.//#import@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 控制器源码：
//// 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 
方式2 - 作为方法来传值
BlockView.h 与 BlockView.m
//// BlockView.h// Block//// Created by YouXianMing on 15/1/14.// Copyright (c) 2015年 YouXianMing. All rights reserved.//#import@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 控制器源码：
//// 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 