如何調整在tableviewcell的UIImageView是適合的方面？

Question

我想調整UIImageView到aspectfitmode的確切圖像大小，而不附帶aspectfit模式的額外空間。

而且我怎樣才能做到這一點調整大小，使其不會讓它出問題顯示UITableViewCells圖像時？

Answer 1

您應該將UIImageView的高度約束作爲IBOutLet屬性，然後計算UIImage的高寬比縮放高度。根據設定的約束常數。

float ratio = SCREEN_WIDTH/width; 
float scaledHeight = height * ratio; 
//float scaledWidth = width * ratio; uncomment if required 

//Should not exceed the Screen size to make the image visible at a time without scrolling. 
if (scaledHeight > SCREEN_HEIGHT) { 
scaledHeight = SCREEN_HEIGHT; 
} 

cell.imageHeightConstraint.constant = scaledHeight; 

Answer 2

UIImage img = [UIImage imageNamed:@"ABC.jpg"]; 
[imageView setImage:img]; 
imageView.frame = CGRectMake(imageView.frame.origin.x, imageView.frame.origin.y, 
          img.size.width, img.size.height);