UIButton的两种block传值方式

2023-01-25 12:50:49

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 <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 / .f;

        // 初始化按钮

        self.leftButton     = [[UIButton alloc] initWithFrame:CGRectMake(, , 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:.f];

        [self addSubview:self.leftButton];

        self.rightButton     = [[UIButton alloc] initWithFrame:CGRectMake(buttonWidth, , 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:.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(, , , )];

    blockView.layer.borderWidth = .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 <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 / .f;

        // 初始化按钮

        self.leftButton     = [[UIButton alloc] initWithFrame:CGRectMake(, , 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:.f];

        [self addSubview:self.leftButton];

        self.rightButton     = [[UIButton alloc] initWithFrame:CGRectMake(buttonWidth, , 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:.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(, , , )];

    blockView.layer.borderWidth = .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

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