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import UIKitimport AssetsLibraryclass ViewController: UICollectionViewController { //资源库管理类 var assetsLibrary = ALAssetsLibrary() //保存照片集合 var assets = [ALAsset]() override func viewDidLoad() { super.viewDidLoad() var countOne = 0 //ALAssetsGroupSavedPhotos表示只读取相机胶卷（ALAssetsGroupAll则读取全部相簿） assetsLibrary.enumerateGroupsWithTypes(ALAssetsGroupSavedPhotos, usingBlock: { (group: ALAssetsGroup!, stop) in println("is goin") if group != nil { var assetBlock : ALAssetsGroupEnumerationResultsBlock = { (result: ALAsset!, index: Int, stop) in if result != nil { self.assets.append(result) countOne++ } } group.enumerateAssetsUsingBlock(assetBlock) println("assets:\(countOne)") //collectionView网格重载数据 self.collectionView?.reloadData() } }, failureBlock: { (fail) in println(fail) }) } // CollectionView行数 override func collectionView(collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int { return assets.count; } // 获取单元格 override func collectionView(collectionView: UICollectionView, cellForItemAtIndexPath indexPath: NSIndexPath) -> UICollectionViewCell { // storyboard里设计的单元格 let identify:String = "DesignViewCell" // 获取设计的单元格，不需要再动态添加界面元素 let cell = self.collectionView?.dequeueReusableCellWithReuseIdentifier( identify, forIndexPath: indexPath) as! UICollectionViewCell //取缩略图 var myAsset = assets[indexPath.item] var image = UIImage(CGImage:myAsset.thumbnail().takeUnretainedValue()) // 从界面查找到控件元素并设置属性 (cell.contentView.viewWithTag(1) as! UIImageView).image = image return cell } // 单元格点击响应 override func collectionView(collectionView: UICollectionView, didSelectItemAtIndexPath indexPath: NSIndexPath) { var myAsset = assets[indexPath.item] //这里不使用segue跳转（建议用segue跳转） var detailViewController = UIStoryboard(name: "Main", bundle: nil) .instantiateViewControllerWithIdentifier("detail") as! ImageDetailViewController detailViewController.myAsset = self.assets[indexPath.row] // navigationController跳转到detailViewController self.navigationController!.pushViewController(detailViewController, animated:true) } override func didReceiveMemoryWarning() { super.didReceiveMemoryWarning() // Dispose of any resources that can be recreated. }} |
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import UIKitimport AssetsLibraryclass ImageDetailViewController: UIViewController { //选中的图片资源 var myAsset:ALAsset! //用于显示图片信息 @IBOutlet weak var textView: UITextView! //用于显示原图 @IBOutlet weak var imageView: UIImageView! override func viewDidLoad() { super.viewDidLoad() //获取文件名 var representation = myAsset.defaultRepresentation() self.title = representation.filename() //获取图片信息 textView.text = "日期：\(myAsset.valueForProperty(ALAssetPropertyDate))\n" + "类型：\(myAsset.valueForProperty(ALAssetPropertyType))\n" + "位置：\(myAsset.valueForProperty(ALAssetPropertyLocation))\n" + "时长：\(myAsset.valueForProperty(ALAssetPropertyDuration))\n" + "方向：\(myAsset.valueForProperty(ALAssetPropertyOrientation))" //获取原图 var imageBuffer = UnsafeMutablePointer<UInt8>.alloc(Int(representation.size())) var bufferSize = representation.getBytes(imageBuffer, fromOffset: Int64(0), length: Int(representation.size()), error: nil) var data = NSData(bytesNoCopy:imageBuffer ,length:bufferSize, freeWhenDone:true) imageView.image = UIImage(data: data) } override func didReceiveMemoryWarning() { super.didReceiveMemoryWarning() // Dispose of any resources that can be recreated. }} |
PhotoViewer.zipSwift - 使用ALAssetsLibrary获取相簿里所有图片，视频（附样例）
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原文地址：http://www.cnblogs.com/Free-Thinker/p/4843339.html
