点击手势并不总是有效

Question

我有一个NSObject，它实例化了一个添加了UITapGestureRecognizer的视图。出了点问题，因为水龙头有时只能起作用......

#import "Monument.h"

@implementation Monument

-(id)initWithFrame:(CGRect)frame itiName:(NSString *)itiName itiPay:(BOOL)itiPay available:(BOOL)available imageName:(NSString *)imageName viewController:(UIViewController *)controller
{
    self = [super init];
    if (self)
    {
        self.view = [[UIView alloc] initWithFrame:frame];
        self.view.userInteractionEnabled = YES;
        self.itiName = itiName;
        self.itiPay = itiPay;
        self.itiImage = imageName;
        self.controller = controller;
        NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
        if (! [defaults boolForKey:itiName])
        {
            self.buy = NO;
        }
        else
        {
            self.buy = YES;
        }
        self.x = frame.origin.x;
        self.y = frame.origin.y;
        self.available = available;
    }
    return self;
}

-(UIView *)drawView
{
    UIImage *background = [UIImage imageNamed:self.itiImage];
    UIImageView *backgroundView = [[UIImageView alloc] initWithImage:background];
    backgroundView.frame = self.view.frame;
    backgroundView.contentMode = UIViewContentModeScaleAspectFit;
    [self.view addSubview:backgroundView];
    // Inzializzo la Label del titolo
    UILabel *titolo = [[UILabel alloc] initWithFrame:CGRectMake(self.x+8.0f, self.y+2.0f, 180.0f, 20.0f)];
    titolo.text = self.itiName;
    titolo.textColor = [UIColor whiteColor];
    [self.view addSubview:titolo];

    UIImage *imageFreeOrPayOrBought;
    if (! self.buy)
    {
        if (self.itiPay)
        {
            imageFreeOrPayOrBought = [UIImage imageNamed:@"pay-ipad"];
        }
        else
        {
            imageFreeOrPayOrBought = [UIImage imageNamed:@"free-ipad"];
        }
    }
    else
    {
        // già comprato
        imageFreeOrPayOrBought = [UIImage imageNamed:@"free-ipad"];
    }
    UIImageView *payOrFree = [[UIImageView alloc] initWithImage:imageFreeOrPayOrBought];
    CGRect frameImage = CGRectMake(self.x, self.y+117.0f, 214.5f, 20.8f);
    payOrFree.frame = frameImage;
    payOrFree.contentMode = UIViewContentModeScaleAspectFit;
    [self.view addSubview:payOrFree];

    // Controllo se disponibile o meno
    if (! self.available)
    {
        self.view.layer.opacity = .3f;
    }

    UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tapRecognized:)];
    [self.view addGestureRecognizer:tap];

    return self.view;
}

-(void)tapRecognized: (UITapGestureRecognizer *)tap
{
    if (! self.available)
    {
       // [self openUnavailableService];
        NSLog(@"Service unavailable");
    }
    else
    {
        if (self.buy)
        {
            //[self openMonumentHomePage];
            NSLog(@"Service bought");
        }
        else
        {
            if (self.itiPay)
            {
                //[self openPurchaseInApp];
                NSLog(@"Service to buy");
            }
            else
            {
                //[self downloadDataForFree];
                NSLog(@"Service to free download");
            }
        }
    }
}

这就是我使用类

的方式

self.arrayOfMonuments = [[NSMutableArray alloc] init];
self.scroll.contentSize = CGSizeMake(568.0f, 640.0f);
Monument *foroRomano = [[Monument alloc] initWithFrame:CGRectMake(20.0f, 0.0f, 217.1f, 117.0f) itiName:@"FORO ROMANO" itiPay:NO available:YES imageName:@"fori-romano-ipad" viewController:self];
[self.arrayOfMonuments addObject:foroRomano];
UIView *foroRomanoView = [foroRomano drawView];
[self.scroll addSubview:foroRomanoView];
Monument *colosseo = [[Monument alloc] initWithFrame:CGRectMake(150.0f, 0.0f, 217.1f, 117.0f) itiName:@"COLOSSEO" itiPay:NO available:YES imageName:@"colosseo-ipad" viewController:self];
[self.arrayOfMonuments addObject:colosseo];
[self.scroll addSubview:[colosseo drawView]];
Monument *appiaAntica = [[Monument alloc] initWithFrame:CGRectMake(20.0f, 80.0f, 217.1f, 117.0f) itiName:@"APPIA ANTICA" itiPay:YES available:NO imageName:@"appia-antica-ipad" viewController:self];
[self.arrayOfMonuments addObject:appiaAntica];
UIView *appiaAnticaView = [appiaAntica drawView];
[self.scroll addSubview:appiaAnticaView];
Monument *esquilino = [[Monument alloc] initWithFrame:CGRectMake(150.0f, 80.0f, 217.1f, 117.0f) itiName:@"ESQUILINO" itiPay:YES available:NO imageName:@"esquilino-ipad" viewController:self];
[self.arrayOfMonuments addObject:esquilino];
[self.scroll addSubview:[esquilino drawView]];
Monument *palatino = [[Monument alloc] initWithFrame:CGRectMake(20.0f, 160.0f, 217.1f, 117.0f) itiName:@"PALATINO" itiPay:YES available:NO imageName:@"palatino-ipad" viewController:self];
[self.arrayOfMonuments addObject:palatino];
[self.scroll addSubview:[palatino drawView]];
Monument *laterano = [[Monument alloc] initWithFrame:CGRectMake(150.0f, 160.0f, 217.1f, 117.0f) itiName:@"LATERANO" itiPay:YES available:NO imageName:@"laterano-ipad" viewController:self];
[self.arrayOfMonuments addObject:laterano];
[self.scroll addSubview:[laterano drawView]];
Monument *foriImperiali = [[Monument alloc] initWithFrame:CGRectMake(20.0f, 240.0f, 217.1f, 117.0f) itiName:@"FORI IMPERIALI" itiPay:YES available:NO imageName:@"fori-imperiali-ipad" viewController:self];
[self.arrayOfMonuments addObject:foriImperiali];
[self.scroll addSubview:[foriImperiali drawView]];

怎么会发生？非常感谢

编辑：我也尝试用UIButton替换UITapGesture，但问题仍然存在

UIButton *monumentBtn = [[UIButton alloc] initWithFrame:self.view.frame];
monumentBtn.backgroundColor = [UIColor clearColor];
[self.view addSubview:monumentBtn];
[monumentBtn addTarget:self action:@selector(tapRecognized:) forControlEvents:UIControlEventTouchUpInside];

编辑：我注意到我传递给init方法的x / y坐标是错误的，因为第一帧的高度是117.0f，位于此下的视图的原点是80.0f。这很奇怪，这就是Tap并不总是有效的原因。我该如何解决这个问题？

重新编辑：我用屏幕映射解决了......遗憾的是我没有找到其他解决方案。