iOS - 仅针对特定 View 翻转动画

Question

我正在开发一个包含一些 View 的游戏(如存储卡游戏)，我希望当用户点击卡片时翻转并显示另一个 View 。我使用这段代码:

- (void)flipCard:(id)sender {

    UIButton *btn=(UIButton *)sender;
    UIView *view=[btn superview];
    UIView *flipView=[[UIView alloc] initWithFrame:[view frame]];
    [flipView setBackgroundColor:[UIColor blueColor]];
    [[flipView layer] setCornerRadius:10];

    NSLog(@"Flip card : view frame = %f, %f",view.frame.origin.x, view.frame.origin.y);

    [UIView transitionFromView:view toView:flipView duration:1.0 options:UIViewAnimationOptionTransitionFlipFromLeft completion:^(BOOL finished) {
    }];

}

每个 View 都有一个覆盖整个 View 的透明按钮，因此当用户点击 View 时就像点击按钮一样。该按钮调用上面传递发件人的方法。当动画开始时，所有 View 都会翻转，而不仅仅是我从发件人那里获得的 View 。我该怎么办？

Answer 1

以下代码可能有助于解决您的问题。我认为它比使用透明按钮更干净。

- (void)viewDidLoad {
    [super viewDidLoad];

    flipped = NO;
    UITapGestureRecognizer *tapGesture = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(handleTap:)];

    [flipContainerView addGestureRecognizer:tapGesture];
    [tapGesture release];
}

- (void)handleTap:(UITapGestureRecognizer *)sender {
    if (sender.state == UIGestureRecognizerStateEnded) {
        [UIView transitionWithView:flipContainerView
                          duration:1
                           options:UIViewAnimationOptionTransitionFlipFromLeft
                        animations:^{

            if (!flipped) {
                [frontCard setHidden:YES];
                [flipContainerView addSubview:backCard.view]; //or unhide it.
                flipped = YES;
            } else {
                [frontCard setHidden:NO];
                [backCard removeFromSuperview]; //or hide it.
            }

        } completion:nil];
    }
}