相关疑难解决方法(0)

我想改变我的UIImageView高度/宽度以匹配我从相册中选择的图像,我在这里找到了一个代码片段.

-(CGRect)frameForImage:(UIImage *)imgs inImageViewAspectFit:(UIImageView *)imagev
{
  float imageRatio = imgs.size.width / imgs.size.height;
  float viewRatio = imagev.frame.size.width / imagev.frame.size.height;
  if(imageRatio < viewRatio)
  {
    float scale = imagev.frame.size.height / imgs.size.height;
    float width = scale * imgs.size.width;
    float topLeftX = (imagev.frame.size.width - width) * 0.5;
    NSLog(@"image after aspect fit: width=%f",width);
    imagev.frame = CGRectMake(topLeftX, 0, width, imagev.frame.size.height);
    return CGRectMake(topLeftX, 0, width, imagev.frame.size.height);
  }
  else
  {
    float scale = imagev.frame.size.width / imgs.size.width;
    float height = scale * imgs.size.height;
    float topLeftY = (imagev.frame.size.height - height) * …

我正在框架中制作图片,然后用户可以在运行时调整帧大小.为了这个目的,我已经UIView在我的主要UIViewController内部和内部做了一个习惯,我UIView放置了2 UIImageView.在xCode的Document Outline Pane中,它的层次结构是:

查看
| --ImageView
| --ImageView

我正在使用这行代码来改变UIView不同条件下的大小,它会相应调整大小:

self.imageObject.frame = CGRectMake(self.imageObject.frame.origin.x , 
                                    self.imageObject.frame.origin.y, 
                                    200, 
                                    200);

imageObject是我的UIView.当我运行它时,UIView更改的大小,但UIImageView大小保持不变.我也试过为我做同样的事情,UIImageView但它没有用.