iOS - 仅针对特定视图翻转动画

Question

我正在开发一个包含一些视图的游戏(作为存储卡游戏),我希望当用户点击卡片时这个翻转并显示另一个视图.我用这个代码:

- (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) {
    }];

}

每个视图都有一个覆盖整个视图的透明按钮,因此当用户点击视图时点击按钮.按钮调用上面传递发送方的方法.当动画开始时,所有视图都被翻转,不仅是我从发送者那里获得的视图.我能怎么做？

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清洁.

- (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];
    }
}

Answer 2

我有同样的问题.在互联网上搜索不同的帖子后,我能够提出一个优雅而简单的解决方案.我有卡作为自定义UIButtons.在自定义UIButton类中,我添加了使用翻转动画更改背景图像的方法:

-(void) flipCard{
    [UIView transitionWithView:self
                      duration:0.3f
                       options:UIViewAnimationOptionTransitionFlipFromRight|UIViewAnimationOptionCurveEaseInOut
                    animations:^{
                        if (self.isFlipped) {
                            [self setBackgroundImage:[UIImage imageNamed:@"card_back_2.png"] forState:UIControlStateNormal];
                        }else{
                            [self setBackgroundImage:[UIImage imageNamed:self.cardName] forState:UIControlStateNormal];
                        }
                    } completion:NULL];
    self.isFlipped = !self.isFlipped;
}

希望这有助于其他人,因为第一个答案已被接受

UPDATE

如果您在包含此子视图的视图中,则代码为:

-(void)flipCard:(APCard*)card{
    [UIView transitionWithView:card
                      duration:kFlipTime
                       options:UIViewAnimationOptionTransitionFlipFromRight|UIViewAnimationOptionCurveEaseInOut
                    animations:^{
                        if (card.isFlipped) {
                            [card setBackgroundImage:[UIImage imageNamed:@"card_back_2.png"] forState:UIControlStateNormal];
                        }else{
                            [card setBackgroundImage:[UIImage imageNamed:card.cardName] forState:UIControlStateNormal];
                        }
                    completion:^(BOOL finished) {
                         if (finished) {
                             //DO Stuff
                         }
                     }
    ];
    card.isFlipped = !card.isFlipped;
}