Question

我一直在努力做到这一点：向简单的自定义视图添加动作。我查看了互联网，找到了两个“简单”的解决方案：

UITapGestureRecognizer
UIButton

我想以编程方式执行此操作，我只需要处理点按。

到目前为止，这是我的代码，我已经分别尝试了两种解决方案，但它不起作用！

的.m

#import "AreaView.h"
@implementation AreaView
#define GREY 27.0/255.0
#define PINK_R 252.0/255.0
#define PINK_G 47.0/255.0
#define PINK_B 99.0/255.0

- (id) initWithFrame:(CGRect)frame imageName:(NSString *)imageName areaName:(NSString *)areaName minimumSpending:(int)minimumSpending andCapacity:(int)capacity
{
    self = [self initWithFrame:frame];
    if (self) {
        self.backgroundColor = [UIColor colorWithRed:GREY green:GREY blue:GREY alpha:1];
        self.userInteractionEnabled=YES;
        //Init variables
        _areaName=areaName;
        _capacity=capacity;
        _minimumSpending=minimumSpending;

        //Image view
        _logoImageView = [[UIImageView alloc]initWithFrame:CGRectMake(5, 4, 66, 50)];
        //_logoImageView.image = [UIImage imageNamed:imageName];
        _logoImageView.backgroundColor = [UIColor grayColor];

        //Label
        _areaNameLabel = [[UILabel alloc]initWithFrame:CGRectMake(0, 54, 76, 18)];
        _areaNameLabel.textAlignment = NSTextAlignmentCenter;
        _areaNameLabel.textColor = [UIColor whiteColor];
        _areaNameLabel.font = [UIFont systemFontOfSize:12.0];
        _areaNameLabel.text = areaName;

        //button
        _button = [[UIButton alloc]initWithFrame:self.bounds];
        _button.userInteractionEnabled=YES;
        _button.backgroundColor=[UIColor yellowColor];
        [_button addTarget:self action:@selector(handleTap:) forControlEvents:UIControlEventTouchUpInside];

        //tap gesture racognizer
        UITapGestureRecognizer *tapRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tapped:)];
        [tapRecognizer setNumberOfTapsRequired:1];
        [tapRecognizer setDelegate:self];
        [self addGestureRecognizer:tapRecognizer];

        [self addSubview:_logoImageView];
        [self addSubview:_areaNameLabel];
        [self addSubview:_button];
    }
    return self;
}


-(void)handleTap:(UIButton *)button
{
    NSLog(@"tapped!");
}

-(void)tapped:(UITapGestureRecognizer *)recognizer
{
    NSLog(@"tapped!");
}
@end

·H

#import <UIKit/UIKit.h>

@interface AreaView : UIView <UIGestureRecognizerDelegate>

@property (nonatomic) UIImageView *logoImageView;
@property (nonatomic) UILabel *areaNameLabel;
@property (nonatomic) NSString *areaName;
@property (nonatomic) int minimumSpending;
@property (nonatomic) int capacity;
- (id) initWithFrame:(CGRect)frame imageName:(NSString *)imageName areaName:(NSString *)areaName minimumSpending:(int)minimumSpending andCapacity:(int)capacity;
@property (nonatomic, strong) UIButton *button;
@end

感谢您的帮助！

修改

问题是handleTap和tapped都不会被触发，即使我评论按钮解决方案或点击手势一个单独测试它们。对于按钮实现，我可以在我的界面上看到它，但点击它什么都不做。

然后在UIScrollview中以编程方式多次添加我的UIView（对于多个视图）。

编辑2

问题比这更复杂。自定义视图位于另一个不同的自定义视图内的scrollview内，其主要功能是重写hittest，因此滚动视图会保留此视图的触摸。 (Here is the purpose of all that)

似乎只要涉及到hittest，它就不起作用。

Answer 1

实施此委托方法，这将对您有所帮助。

 - (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldReceiveTouch:(UITouch *)touch
    {
           id touchedView = gestureRecognizer.view;
           if ([touchedView isKindOfClass:[UIButton class]])
           {
                return NO; //It won't invoke gesture method, But it'll fire button method.
            }
           return YES;
    }

Answer 2

我不确定为什么你的UIButton和UITapGestureRecognizer选择器没有被解雇。但是，处理视图上的点击的另一个选项是简单地覆盖touchesEnded:withEvent方法：

-(void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event{
    //handle a tap
}

这样，您就不必创建UIButton或UITapGestureRecognizer对象了。

向自定义uiview添加操作

2 个答案: