有沒有什麼方法可以在AspectFit集合中找到UIImageView中圖像大小的高度/寬度？

Question

我試圖讓UIImage的image.size.h和image.size.w在UIImageView的內部與UIViewContentModeScaleAspectFit開啓。

我想調整大小UIImage大小，而不是原始圖像大小。

可以得到這個值嗎？

Answer 1

您可以嘗試自己進行計算：

//Your image 
UIImage *image; 
//Your imageView; 
UIImageView *imageView; 
int width, height; 
float aspectRatio; 
if (image.size.height > image.size.width) 
{ 
    height = imageView.frame.size.height; 
    aspectRatio = image.size.height/height; 
    width = image.size.width/aspectRatio; 
} 
else 
{ 
    width = imageView.frame.size.width; 
    aspectRatio = image.size.width/width; 
    height = image.size.height/aspectRatio; 
} 

Answer 2

CGSize size=CGSizeMake(79, 84);//set the width and height 
      UIGraphicsBeginImageContext(size); 
      [image drawInRect:CGRectMake(0,0,size.width,size.height)]; 
      UIImage* newImage = UIGraphicsGetImageFromCurrentImageContext(); 
//here is the scaled image which has been changed to the size specified 
      UIGraphicsEndImageContext(); 

這個工程肯定的，不要忘了導入QuartzCore框架..

有一個幸福的編碼(^_^) ....