Ios Swift中UIImageWriteToSavedPhotosAlbum之后的图像URL
我用相机拍照后,用以下代码保存图像:Ios Swift中UIImageWriteToSavedPhotosAlbum之后的图像URL,ios,xcode,swift,ios8,Ios,Xcode,Swift,Ios8,我用相机拍照后,用以下代码保存图像: UIImageWriteToSavedPhotosAlbum(image, self,"image:didFinishSavingWithError:contextInfo:", nil) 这会将图像保存在摄影机卷中。另外,我想将这个保存的图像的URL保存在核心数据中。是否可以检索到的URL(或路径),以便我只需将此URL而不需要将完整图像保存在核心数据中?在阅读了大量用Objective编写的答案后,我终于想出了如何使用Xcode 6.2在Swift中编
UIImageWriteToSavedPhotosAlbum(image, self,"image:didFinishSavingWithError:contextInfo:", nil)
这会将图像保存在摄影机卷中。另外,我想将这个保存的图像的URL保存在核心数据中。是否可以检索到的URL(或路径),以便我只需将此URL而不需要将完整图像保存在核心数据中?在阅读了大量用Objective编写的答案后,我终于想出了如何使用Xcode 6.2在Swift中编写此内容:
ALAssetsLibrary().writeImageToSavedPhotosAlbum(image.CGImage, orientation: ALAssetOrientation(rawValue: image.imageOrientation.rawValue)!,
completionBlock:{ (path:NSURL!, error:NSError!) -> Void in
println("\(path)")
})
这是我的密码 保存图像:
let imageData = NSData(data:UIImagePNGRepresentation(pickedimage))
let paths = NSSearchPathForDirectoriesInDomains(NSSearchPathDirectory.DocumentDirectory, NSSearchPathDomainMask.UserDomainMask, true)
var docs: String = paths[0] as! String
let fullPath = docs.stringByAppendingPathComponent("yourNameImg.png")
let result = imageData.writeToFile(fullPath, atomically: true)
print(fullPath)
获取图像:
let nsDocumentDirectory = NSSearchPathDirectory.DocumentDirectory
let nsUserDomainMask = NSSearchPathDomainMask.UserDomainMask
if let paths = NSSearchPathForDirectoriesInDomains(nsDocumentDirectory, nsUserDomainMask, true)
{
if paths.count > 0
{
if let dirPath = paths[0] as? String
{
let readPath = dirPath.stringByAppendingPathComponent("yourNameImg.png")
let image = UIImage(contentsOfFile: readPath)
UploadImagePreview.image = image
}
}
}
我们可以尝试使用照片框架来获取最后保存的图像
var fetchOptions: PHFetchOptions = PHFetchOptions()
fetchOptions.sortDescriptors = [NSSortDescriptor(key: "creationDate", ascending: true)]
var fetchResult = PHAsset.fetchAssetsWithMediaType(PHAssetMediaType.Image, options: fetchOptions)
if (fetchResult.firstObject != nil) {
var lastAsset: PHAsset = fetchResult.lastObject as! PHAsset
PHImageManager.defaultManager().requestImageForAsset(lastAsset, targetSize: self.UploadImagePreview.bounds.size, contentMode: PHImageContentMode.AspectFill, options: PHImageRequestOptions(), resultHandler: { (result, info) -> Void in
self.UploadImagePreview.image = result
})
}
可能的重复:不幸的是,该答案是用ObjectiveC书写的。我需要Swift编程语言中的这个……不要忘记导入语句:
import assetsbrary
;)注意:从iOS 9开始,此API已被弃用。正如Tys在“而是使用PHPhotoLibrary和“performChanges”方法将图像保存到设备”中的评论中所说,“如果我们只需要一个对象,我们可以使用fetchOptions.fetchLimit=1
。此外,顺序错误,应为升序:false
。