将 UIView 移动到另一个 UIView

Question

我有一个包含 2 个UIScrollViews、scrollView1、scrollView2 UIViewController。

scrollView1包含许多UIViews，当点击其中一个UIViews时，我希望它移动到scrollView2

点击属于scrollView1的UIView时，将调用UIViewController内的方法，并将view作为参数传递。

Answer 1

在该方法中，您应该编写如下内容：

[view removeFromSuperview];
[scrollView2 addSubview:view];

编辑：

对于动画移动，您应该尝试如下操作：

CGPoint originalCenter = [self.view convertPoint:view.center fromView:scrollView1];
[view removeFromSuperView];
[self.view addSubview:view];
view.center = originalCenter;
CGPoint destinationPointInSecondScrollView = ; // Set it's value
CGPoint finalCenter = [self.view convertPoint:destinationPointInSecondScrollView fromView:scrollView2];
[UIView animateWithDuration:0.3
                      delay:0
                    options:UIViewAnimationOptionCurveEaseInOut
                 animations:^{
                     view.center = finalCenter;
                 } completion:^(BOOL finished) {
                         [view removeFromSuperView];
                         [scrollView2 addSubview:view];
                         view.center = destinationPointInSecondScrollView;
                     }];

Answer 2

假设您将这两个 scrollView 声明为属性：

- (void)viewDidLoad
{
    [super viewDidLoad];
    UITapGestureRecognizer *gesture = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(viewTapped:)]
    for (UIView *view in self.scrollView1.subviews) {
        [view addGestureRecognizer:gesture];
    }
}
- (void)viewTapped:(UITapGestureRecognizer *)gesture
{
    UIView *view = gesture.view;
    [self moveToScrollView2:view];
}
- (void)moveToScrollView2:(UIView *)view
{
    [view removeFromSuperview];
    [self.scrollView2 addSubview:view];
}