如何根据图像的大小动态设置imageView的大小 [英] How can I dynamically set the size of the imageView according to the size of the image

问题描述

我使用Interface Builder来布局我的视图和图像视图。我在视图上放了一个imageView并将其设置为插座。问题是无论我在我的程序中设置了什么尺寸的图像（768 * 1024,1024 * 700）：

I user Interface Builder to layout my view and image view. I put a imageView on the view and set it as an outlet. The problem is that no matter what size of image (768*1024、1024*700) I set in my program：

 self.imageView.image = [UIImage imageNamed:self.filename];

屏幕上的大小始终是我在Interface Builder中设置的imageView的大小。如何根据图像的大小动态设置imageView的大小？谢谢！

The size to be on the screen is always the size of the imageView I set in the Interface Builder. How can I dynamically set the size of the imageView according to the size of the image? Thanks!

推荐答案

类似于：

UIImageView *imageView = [[UIImageView alloc] init];

UIImage *image = [UIImage imageNamed:@"image.png"];
CGSize imageSize = [image size];

imageView.frame = CGRectMake(0, 0, imageSize.width, imageSize.height);

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