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問題:重裝上陣在UICollectionViewCell緩存的UIImageView(滾動或 UICollectionViewController之間切換期間)不保持正確的contentMode。保留圖像縱橫比在UICollectionViewCell
我嘗試在UIImageView上使用.sizeToFit(),並在每次加載時重置.contentMode = UIViewContentMode.ScaleAspectFit,但這沒有幫助。
override func collectionView(collectionView: UICollectionView, cellForItemAtIndexPath indexPath: NSIndexPath) -> MyCollectionViewCell {
let cell = collectionView.dequeueReusableCellWithReuseIdentifier("myCell", forIndexPath: indexPath) as! MyCollectionViewCell
if (indexPath.item < self.the_array?.count){
if (images_cache[self.the_array![indexPath.item].src!] != nil){
// calling this here doesn't work
cell.myImage.contentMode = UIViewContentMode.ScaleAspectFit
// calling this here doesn't work either
cell.myImage.sizeToFit()
cell.myImage.image = images_cache[self.the_array![indexPath.item].src!]! as UIImage
}
else{
if let url = NSURL(string: "https:" + (self.the_array![indexPath.item].src)!), data = NSData(contentsOfURL: url) {
let the_image = UIImage(data: data)
cell.myImage.image = the_image
images_cache[self.the_array![indexPath.item].src!] = the_image!
}
}
}
return cell
}