如何在调整UIView大小时进行动画 [英] How to animate while resizing UIView

问题描述

我在网上看到了一些材料，但仍然不能到达我想要的地方。
我需要动画我的视图向下，使它的高度更大。

I saw some material on the web, but still can't quite get to where I want. I need to animate my view downwards, making it's height bigger.

这里是我的代码到目前为止。这里发生了什么，是，而不是我的视图调整大小，它只是改变它的位置有点。
如果我将proprty而不是bounds.size改为transform.scale.y，它会更好一点，只有这次它向上和向下扩展视图，而不只是向下扩展。

Here is my code so far. What's happening here, is that instead of my view resizing, it's just changing it's location a bit up. If I change the proprty instead of "bounds.size" to be "transform.scale.y", it's a little better, only this time it expands the view both up and down, not just downwards.

另一件我不是：这些键只是CALayer属性？在哪里可以找到这些键的列表？

Another thing I'm not of : are these keys just CALayer properties ? where I can find a list of these keys?

我真的很感谢在这里的帮助。谢谢！

I would really appreciate help here. Thanks!

int x = self.btnHead.frame.origin.x;
int y = self.btnHead.frame.origin.y;
int height = self.btnHead.frame.size.height;
int width = self.btnHead.frame.size.width;


CABasicAnimation *resizeAnimation = [CABasicAnimation animationWithKeyPath:@"bounds.size"];
[resizeAnimation setToValue:[NSValue valueWithCGSize:CGSizeMake(width,height+50)]];
resizeAnimation.fillMode = kCAFillModeForwards;
resizeAnimation.removedOnCompletion = NO;

CAAnimationGroup *animationGroup = [CAAnimationGroup animation];
animationGroup.animations = [NSArray arrayWithObjects:resizeAnimation,nil];
animationGroup.removedOnCompletion = NO;
animationGroup.fillMode = kCAFillModeForwards;
animationGroup.removedOnCompletion=NO;
animationGroup.duration = 0.1;

[self.btnHead.layer addAnimation:animationGroup forKey:@"animations"];

修改：根据请求发布我的第一个代码 -

posting my first code as requested - This will just change my view size, but won't animate , no matter the duration I enter.

    int x = self.btnHead.frame.origin.x;
    int y = self.btnHead.frame.origin.y;
    int height = self.btnHead.frame.size.height;
    int width = self.btnHead.frame.size.width;


    [UIView beginAnimations:nil context:nil];
    [UIView setAnimationDuration:10];
    CGRect rect = CGRectMake(x,y,width ,height+BUTTON_HEIGH*2);

    self.btnHead.frame = rect;

    [UIView commitAnimations];

推荐答案

btnHead.clipsToBounds=YES

解决了问题。
不确定exacly为什么。

Solved the issue. Not sure exacly why.

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