ios - 触摸时如何向右滑动标签？

Question

在我的应用程序中，我创建了一个 UiLabel。我必须根据触摸手势将标签向右移动，例如滑出菜单。请帮帮我。

Answer 1

您可以使用 UITapGestureRecognizer ：

UITapGestureRecognizer *singleTap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(handleSingleTap:)];

[label addGestureRecognizer:singleTap];

然后在你的方法中使用 UIViewAnimation ：

- (void)handleSingleTap:(UITapGestureRecognizer *)recognizer {


     CGRect frame = label.frame;

    [UIView beginAnimations:nil context:nil];
    [UIView setAnimationDuration:0.5];
    [UIView setAnimationCurve:UIViewAnimationCurveEaseOut];

     frame.origin.x += 100; // slide right
    label.frame = frame;

    [UIView commitAnimations];
}

Answer 2

假设 UILabel 出口名称是 testing 。

// set up geture as follows in view did load
UISwipeGestureRecognizer* swipeGesture = [[UISwipeGestureRecognizer alloc]initWithTarget:self action:@selector(labelDidSwiped:)];
[swipeGesture setDirection: UISwipeGestureRecognizerDirectionLeft];
[testing addGestureRecognizer:swipeGesture];

swipeGesture = [[UISwipeGestureRecognizer alloc]initWithTarget:self action:@selector(labelDidSwiped:)];
[swipeGesture setDirection:UISwipeGestureRecognizerDirectionRight];

[testing addGestureRecognizer:swipeGesture];

-(void)labelDidSwiped:(UISwipeGestureRecognizer*)gesture
{
switch (gesture.direction) {
    case UISwipeGestureRecognizerDirectionLeft:
        // you can change the frame of label in here depending on your requirement
        DLog(@"left swipe");
        break;
    case UISwipeGestureRecognizerDirectionRight:
// you can change the frame of label in here depending on your requirement
        break;
    default:
        break;
 }
}

Answer 3

使用 CGPointMake 函数补给仓位

label.position = CGPointMake (newX, newY);
CABasicAnimation *animation = [CABasicAnimation animationWithKeyPath:@"position"];
animation.duration = <duration>;
animation.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseIn];
animation.fromValue = CGPointMake (oldX, oldY);
animation.toValue = CGPointMake (newX, newY);
[label addAnimation:animation forKey:@"position"];