从UIImageView的中心对UIImageView进行动画处理 [英] Animate a UIImageView from center of the UIImageView

问题描述

我有一个UIImageView，应该从size (0,0) --> (93,75)

我有以下内容

  [UIView animateWithDuration:0.5 delay:0 options:UIViewAnimationOptionTransitionNone
                 animations:^{
                     imgButton.layer.anchorPoint = CGPointMake(imgButton.bounds.size.width/2, imgButton.bounds.size.height/2);
                     CGRect btnFrame = imgButton.frame;
                     btnFrame.size.width = 105;
                     btnFrame.size.height = 85;
                     imgButton.frame = btnFrame;
                 }
                 completion:^(BOOL finished) {
                     [self animageButton2:imgButton];
                 }];

这是可行的，但是我唯一的问题是它不是从UIImageView的中心进行动画设置，而是从左上角进行动画设置.

This is working but the only problem I have is that it is not animating from the center of the UIImageView but from the top left corner.

有人知道吗?

推荐答案

我已经在Borrden的帮助下解决了它.这就是我的解决方案.

I've solved it with the help of Borrden. This is what my solution was.

首先创建一个imageview

First create an imageview

UIImageView *imgLineup = [[UIImageView alloc]initWithFrame:CGRectMake(10, y, 93, 75)];
imgLineup.transform = CGAffineTransformScale(CGAffineTransformIdentity, 0.0, 0.0);

然后执行以下操作.

[UIView animateWithDuration:0.5 delay:0 options:UIViewAnimationOptionCurveEaseInOut
                     animations:^{
                         imgButton.layer.anchorPoint = CGPointMake(0.5, 0.5);
                         imgButton.transform = CGAffineTransformScale(CGAffineTransformIdentity, 1.0, 1.0);

                     }
                     completion:^(BOOL finished) {
                        NSLog(@"done");
                     }];

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