Fusuma相册查看视频拇指交换

Posted 2023-03-08

【中文标题】Fusuma相册查看视频拇指交换

【英文标题】：Fusuma Album View video thumbs swaping

【发布时间】：2016-10-28 09:12:15

【问题描述】：

我将 Fusuma 用于我的图片和视频库。 我对滚动画廊视图 (FSAlbumView.swift) 有疑问。当我滚动它时，它会交换视频拇指，或者代替视频拇指，图像拇指会出现，图像拇指没有任何问题，问题仅在于视频拇指。

这是我的代码。

 func collectionView(collectionView: UICollectionView, cellForItemAtIndexPath indexPath: NSIndexPath) -> UICollectionViewCell 

    let cell = collectionView.dequeueReusableCellWithReuseIdentifier("FSAlbumViewCell", forIndexPath: indexPath) as! FSAlbumViewCell

    let currentTag = cell.tag + 1
    cell.tag = currentTag

    let asset = self.images[indexPath.item] as! PHAsset
    if(asset.mediaType == .Image)
        self.imageManager?.requestImageForAsset(asset,
                                                targetSize: cellSize,
                                                contentMode: .AspectFill,
                                                options: nil) 
                                                    result, info in

                                                    if cell.tag == currentTag 
                                                        cell.image = result
                                                    

        
    else if(asset.mediaType == .Video)
        self.imageManager?.requestAVAssetForVideo(asset, options: nil, resultHandler: (asset: AVAsset?, audioMix: AVAudioMix?, info: [NSObject : AnyObject]?) in
                //dispatch_async(dispatch_get_main_queue(), 

                    let asset = asset as? AVURLAsset
            if asset?.URL.absoluteString != nil
            self.videoURLArray.append([indexPath.row:(asset?.URL.absoluteString)!])
            
                    if cell.tag == currentTag 
                        cell.video = asset?.URL
                       // self.videoURLArray[indexPath.row] = (asset?.URL.absoluteString)!
                        print(asset?.URL)

                    
                    //..var data = NSData(contentsOfURL: asset!.URL)

                //)
            )
    
    return cell

【参考方案1】：

我们也遇到了同样的问题。我们所做的是在下面给出。不知道对不对。

评论以下陈述。

let currentTag = cell.tag + 1  
cell.tag = currentTag

添加用以下代码sn-p替换if-else块

self.imageManager?.requestImageForAsset(asset, targetSize: cellSize, contentMode: .AspectFill, options: nil)
                                                    result, info in


                                                    if(asset.mediaType == .Video)
                                                        self.imageManager?.requestAVAssetForVideo(asset, options: nil, resultHandler: (asset: AVAsset?, audioMix: AVAudioMix?, info: [NSObject : AnyObject]?) in

                                                            let asset = asset as? AVURLAsset
                                                            if asset?.URL.absoluteString != nil
                                                                self.videoURLArray.append([indexPath.row:(asset?.URL.absoluteString)!])
                                                            
                                                        )
                                                    
                                                    cell.image = result