获得UIImageView的高宽值

需要获取图片的尺寸，高*宽。
然后将值传递到下面的代码：

 UIImageView *imgView=[[UIImageView alloc] initWithFrame:CGRectMake(25, 5, imgView.size.width, imgView.size.width)];

但是总是不成功，不知道应该怎么实现？谢谢

UIImageView *imgView=[[UIImageView alloc] initWithFrame:CGRectMake(25, 5, imgView.size.width, imgView.size.width)];

你这样创建，这时的UIImageView还没有width及height.UIImageView 尺寸依据它添加的UIImage

UIImage *img=[UIImage imageNamed:@""];
UIImageView *imgView=[[UIImageView alloc] initWithImage:img];
imgView.frame=CGRectMake(25, 5, imgView.size.width, imgView.size.width);

UIImage *image = [UIImage imageNamed:@"image.png"];
UIImageView *imgView = [[UIImageView alloc] initWithImage:image];
imgView.frame = CGRectMake(0, 0, image.size.width, image.size.height);

希望能帮到你

用UIImage尺寸属性获得尺寸。

UIImage *img = [UIImage imageNamed:@"image.png"];
UIImageView *imgView=[[UIImageView alloc] initWithFrame:CGRectMake(25, 5, img.size.width, img.size.width)];

或者这样：

UIImageView *imgView=[[UIImageView alloc] initWithImage:img];