ios - 如果将 UIView 添加为 subview ，则 UIButton 目标不起作用

Question

我有一个 UIButton。它有两个 subview 。然后我打电话:

[createButton addTarget:self action:@selector(openComposer) forControlEvents:UIControlEventTouchUpInside];

如果我点击 UIButton 中未被覆盖但它的 subview 之一的部分，它可以正常工作。但是，如果我改为点击其中一个 subview ，它不会触发操作。

在两个 subview 上，我都将 .userInteractionEnabled 设置为 YES。

两个 subview 都是带有 frame 和 backgroundColor 的普通 UIViews。

我怎样才能让水龙头“穿过”UIView 并到达 UIButton？

谢谢

编辑:我需要使用 UIControlEvents，因为我需要 UIControlEventTouchDown。

编辑 2:

这是按钮的代码。

@interface CreateButton ()

@property (nonatomic) Theme *theme;
@property (nonatomic) UIView *verticle;
@property (nonatomic) UIView *horizontal;
@property (nonatomic) BOOL mini;

@end

@implementation CreateButton

#pragma mark - Accessors

- (UIView *)verticle {
    if (! _verticle) {
        _verticle = [[UIView alloc] init];
        _verticle.backgroundColor = [self.theme colorForKey:@"createButtonPlusBackgroundColor"];
        _verticle.userInteractionEnabled = NO;
    }
    return _verticle;
}

- (UIView *)horizontal {
    if (! _horizontal) {
        _horizontal = [[UIView alloc] init];
        _horizontal.backgroundColor = [self.theme colorForKey:@"createButtonPlusBackgroundColor"];
        _verticle.userInteractionEnabled = NO;
    }
    return _horizontal;
}

#pragma mark - Init

- (instancetype)initWithTheme:(Theme *)theme frame:(CGRect)frame {
    self = [super initWithFrame:frame];
    if (self) {
        _theme = theme;

        self.layer.cornerRadius = roundf(frame.size.width / 2);
        self.layer.shadowColor = [UIColor blackColor].CGColor;
        self.layer.shadowOpacity = .1f;
        self.layer.shadowOffset = CGSizeZero;
        self.layer.shadowRadius = 15.f;
        self.backgroundColor = [self.theme colorForKey:@"createButtonBackgroundColor"];

        [self addSubview:self.verticle];
        [self addSubview:self.horizontal];

        [self addTarget:self action:@selector(animate) forControlEvents:UIControlEventTouchDown];
        [self addTarget:self action:@selector(animate) forControlEvents:UIControlEventTouchUpInside];
        [self addTarget:self action:@selector(animate) forControlEvents:UIControlEventTouchUpOutside];
    }
    return self;
}

#pragma mark - Actions

- (void)animate {
    [UIView animateWithDuration:0.2 delay:0 usingSpringWithDamping:0.4 initialSpringVelocity:8 options:kNilOptions animations:^{
        if (self.mini) {
            self.transform = CGAffineTransformMakeScale(1.0, 1.0);
            self.mini = NO;
        } else {
            self.transform = CGAffineTransformMakeScale(0.90, 0.90);
            self.mini = YES;
        }
    } completion:nil];
}

#pragma mark - UIView

- (void)layoutSubviews {
    CGSize size = self.bounds.size;

    NSInteger width = 3;
    NSInteger verticleInset = 12;
    self.verticle.frame = CGRectMake((size.width - width) / 2, verticleInset, width, size.height - (verticleInset * 2));
    self.horizontal.frame = CGRectMake(verticleInset, (size.height - width) / 2, size.width - (verticleInset * 2), width);
}

@end

Answer 1

为您的 subview 将 userInteractionEnabled 设置为 NO 以允许触摸通过它们并到达您的按钮。

还要确保将 _verticle.userInteractionEnabled = NO; 中的 horizo​​ntal 属性更改为 _horizo​​ntal.userInteractionEnabled = NO; 因为我认为这是一个打字错误。