Question

我有一个ViewController类，我在self.view上有一个名为templateView的UIView，它由一个名为gridView的UIView组成，我需要在templateView上滑动，我添加了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什么？？

Answer 1

我建议

使用带参数的手势处理程序（如果您曾向多个视图添加手势）;
确保相关视图已启用userInteractionEnabled。
除非您正在实施其中一种UIGestureRecognizerDelegate方法，否则无需设置手势delegate。

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;
                     }];
}

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定义的，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。

Answer 2

您可以使用一些UIViewAnimations移动gridView。创建类似的东西：

-(void)swipeRightAction{
    [UIView setAnimationDuration:1];
    gridView.frame = CGRectMake(320,0);
    [UIView commitAnimations];
}

此代码将更改gridView的框架。您需要根据要滑动视图的位置更改此参数。我没有尝试代码，请告诉我它是否有效。

在UIView之间滑动手势

2 个答案: