一秒内增加和减少 imageView 的宽度

Question

所以这是我的问题： 我有一个图像“图像”，我想用动画在一秒钟内增加两倍的宽度并减少两倍的宽度。我想每秒都这样做。请问我该怎么做？抱歉我的英语我是法国人：/

Answer 1

您好，您可以将 CoreAnimation 与 UIImageView 的 CALayer 一起使用，只需复制此代码即可。

CABasicAnimation *pulseAnimation = [CABasicAnimation animationWithKeyPath:@"transform.scale"];
pulseAnimation.duration = .5;
pulseAnimation.toValue = [NSNumber numberWithFloat:1.1];
pulseAnimation.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut];
pulseAnimation.autoreverses = YES;
pulseAnimation.repeatCount = FLT_MAX;

UIImageView *imgView = [[UIImageView alloc]initWithImage:[UIImage imageNamed:@"icon.png"] ];
[imgView setFrame:CGRectMake(0, 0, 50, 50)];
[self.view addSubview:imgView];
CALayer *layer = imgView.layer;
[layer addAnimation:pulseAnimation forKey:nil];

Answer 2

UIImage * imgOne;

imgOne.transform = CGAffineTransformMakeScale(2,1);

[UIView beginAnimations:nil context:nil];
[UIView setAnimationDuration:1.0];
[UIView setAnimationDelegate:self];
imgOne.transform = CGAffineTransformIdentity;
[UIView commitAnimations];

Answer 3

首先创建两个具有图像原始视图值的浮点，例如 float1 和 float2。

image.imageView.bounds.size.width = float1;
image.imageView.bounds.size.height = float2;

然后，创建一个名为 x 的整数，并在 ccTime 函数中每次将 x 加一（这将导致 x 每秒被调用 60 次），所以现在您可以设置如下语句...

if(x > 60){
float1 = float1 + (how much bigger you want the image to be)
float2 = float2 + (how much bigger you want the image to be)
}

如果您提供了一些示例代码，我本来能够更好地回答你的问题：/

如果你不使用cocos2d，那么你将不得不使用NSTimer而不是ccTime。

Answer 4

1. 将其放入动画块中

2. 使用选择器

   - (void)startSizeChange {
       [UIView beginAnimations:@"changeSize" context:nil];
       [UIView setAnimationCurve:UIViewAnimationCurveEaseIn];
       [UIView setAnimationDidStopSelector:@selector(endSizeChange)];
       [UIView setAnimationDuration:0.5];
       imageview.frame.size.height = 100;
       [UIView提交动画]； 
    }
   
   - (void)endSizeChange {
   
       [UIView beginAnimations:@"changeSize" context:nil];
       [UIView setAnimationCurve:UIViewAnimationCurveEaseIn];
       [UIView setAnimationDidStopSelector:@selector(startSizeChange)];
       [UIView setAnimationDuration:0.5];
       imageview.frame.size.height = 50;
       [UIView提交动画]； 
    }
   

Answer 5

试试这个：

- (void)startSizeChange {

    [UIView beginAnimations:@"changeSize" context:nil];
    [UIView setAnimationCurve:
    [UIView setAnimationDuration:0.3];
    YourImageView.frame = CGRect(YourImageView x + 10 , YourImageView y + 10, YourImageView weight - 10, YourImageView height - 10);
    [UIView commitAnimations]; 

    [self endSizeChange];
 }

- (void)endSizeChange {

    [UIView beginAnimations:@"changeSize" context:nil];
    [UIView setAnimationCurve:
    [UIView setAnimationDuration:0.3];
    YourImageView.frame = CGRect(YourImageView x - 10 , YourImageView y - 10, YourImageView weight + 10, YourImageView height + 10);
    [UIView commitAnimations]; 
 }