在UIView之间滑动手势

Question

我有一个ViewController类,其中我有一个名为templateViewself.view 的UIView ,它由一个名为UIView的UIView组成gridView,这里我需要刷卡templateView,因为我已经添加了swipegesture,

swipeRight = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(swipeRightAction)];
swipeLeft = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(swipeLeftAction)];

swipeRight.direction = UISwipeGestureRecognizerDirectionRight;
swipeRight.delegate = self;

swipeLeft.direction = UISwipeGestureRecognizerDirectionLeft;
swipeLeft.delegate = self;

 [templateView addGestureRecognizer:swipeRight];
 [templateView addGestureRecognizer:swipeLeft];

在swipeRight和swipeLeft我需要移动gridView左侧和右侧..我需要在这些方法中实现..？

Answer 1

我建议

1. 使用带参数的手势处理程序(如果您将手势添加到多个视图中);

2. 确保有问题的视图已userInteractionEnabled打开.

3. delegate除非您正在实施其中一种UIGestureRecognizerDelegate方法,否则无需设置手势.

因此,配置可能如下所示:

templateView.userInteractionEnabled = YES;

swipeRight = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(handleSwipe:)];
swipeRight.direction = UISwipeGestureRecognizerDirectionRight;
[templateView addGestureRecognizer:swipeRight];

swipeLeft = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(handleSwipe:)];
swipeLeft.direction = UISwipeGestureRecognizerDirectionLeft;
[templateView addGestureRecognizer:swipeLeft];

然后手势处理程序可能如下所示:

- (void)handleSwipe:(UISwipeGestureRecognizer *)gesture
{
    CGRect frame = self.gridView.frame;

    // I don't know how far you want to move the grid view.
    // This moves it off screen.
    // Adjust this to move it the appropriate amount for your desired UI

    if (gesture.direction == UISwipeGestureRecognizerDirectionRight)
        frame.origin.x += self.view.bounds.size.width;
    else if (gesture.direction == UISwipeGestureRecognizerDirectionLeft)
        frame.origin.x -= self.view.bounds.size.width;
    else
        NSLog(@"Unrecognized swipe direction");

    // Now animate the changing of the frame

    [UIView animateWithDuration:0.5
                     animations:^{
                         self.gridView.frame = frame;
                     }];
}

请注意,如果您正在使用自动布局,并且如果视图是由约束而不是translatesAutoresizingMaskIntoConstraints,则此处理程序代码必须适当更改.但希望这能为您提供基本的想法.