创建具有图像精确大小的UIImageVIew

Question

如何从图像中检测尺寸，然后使用该尺寸创建UIImageView，完美贴合图像内部？

Answer 1

Just create the UIImageView like this:

UIImageView *aImageView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"yourImage.png"]];

So the ImageView has the size of the image. From the Documentation of UIImageView:

This method adjusts the frame of the receiver to match the size of the specified image. It also disables user interactions for the image view by default.

I hope my answer helps you. :-D

Sandro

Answer 2

Here no need to set the frame size when we use the image in imageView

UIImageView *img = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"image.png"]];

ImageView will automatically takes the size of image.