Question

我的mainViewController名称为GameViewController，代码如下：

@interface GameViewController : UIViewController <UIAlertViewDelegate, GameDelegate,UIGestureRecognizerDelegate>

@property (nonatomic, weak) IBOutlet UIView *cardContainerView;


... (the following code is in a function called -DealCards)

for (PlayerPosition p = startingPlayer.position; p < startingPlayer.position + 4; ++p)
{
    Player *player = [self.game playerAtPosition:p % 4];
    CardView *cardView = [[CardView alloc] initWithFrame:CGRectMake(0, 0, CardWidth, CardHeight)];
    cardView.card = [player.closedCards cardAtIndex:t];
    cardView.userInteractionEnabled=YES;
    [self.cardContainerView addSubview:cardView];
    [cardView animateDealingToBottomPlayer:player withIndex:t withDelay:delay];
    delay += 0.1f;
    UITapGestureRecognizer *recognizer=[[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(cardSelected:)];
    [recognizer setDelegate:self];
    [cardView addGestureRecognizer:recognizer];
}

CardView是UIView的子类：

@implementation CardView
{
    UIImageView *_backImageView;
    UIImageView *_frontImageView;
    CGFloat _angle;
}

@synthesize card = _card;

- (id)initWithFrame:(CGRect)frame
{
    if ((self = [super initWithFrame:frame]))
    {
        self.backgroundColor = [UIColor clearColor];
        [self loadBack];
        self.userInteractionEnabled=YES;
    }
    return self;
}

由于空间有限，卡片一个放在另一个上面，就像半卡片可见，其余卡片从顶部卡片覆盖，依此类推。

我希望能够确定哪张卡被按下了。

但是，在我的mainViewController中，我确实有这个功能：

-(void)cardSelected:(UITapGestureRecognizer *)recognizer
{
    NSLog(@"Card Selected with gestures");
}

但永远不会被召唤。

你能帮助解决缺失的问题吗？可能有一些视图阻止了触摸或其他东西，但我无法弄清楚哪一个。令我感到困惑的是，CardViews被添加为self.cardContainerView的子视图，这是我的GameViewController的属性。

Answer 1

在GameViewController中添加以下内容：

-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
    UITouch *touch = [[touches allObjects] objectAtIndex:0];
    CGPoint touchLocation = [touch locationInView:self.cardContainerView];
    CardView *selectedCard;
    for (CardView *card in self.cardContainerView.subviews)
    {
    if(CGRectContainsPoint(card.frame, touchLocation))
     {
         selectedCard = card;

     }
    }

    NSLog(@"Value %d",selectedCard.card.value);
}

当然你用0消除了值，剩下的就是牌。

我没有放置break;，因为有些视图是重叠的，它会得到第一个而不是上面的那个，当然你可以向后迭代并根据需要修复它。

uitapgesturerecognizer不适用于子视图iOS

1 个答案: