我有一个应用程序,用户可以在其中录制视频,该视频保存在照片库中,我存储视频的路径,以便将来用户可以在应用程序中再次看到该视频。问题是我认为我使用的方法给了我某种临时路径,几天后,视频仍在画廊中,但路径不再有效并使应用程序崩溃。这是我正在使用的代码:
func imagePickerController(picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [NSObject : AnyObject]) {
let mediaType: String = info["UIImagePickerControllerMediaType"] as! String
if mediaType == "public.movie" {
let tempImageURL = info[UIImagePickerControllerMediaURL] as! NSURL!
let pathString = tempImageURL.relativeString
self.dismissViewControllerAnimated(true, completion: {})
if picker.sourceType == UIImagePickerControllerSourceType.PhotoLibrary {
self.videoPath = pathString
// Save the path in the DB
} else {
VideoManager.saveVideo(tempImageURL, onComplete: { (path) -> Void in
self.videoPath = path
// Save the path in the DB
})
var fileManager: NSFileManager = NSFileManager()
fileManager.removeItemAtPath(pathString!, error: nil)
}
}
}
VideoManager.saveVideo方法代码如下:
func saveVideo(videoURL: NSURL, onComplete:((path: String) -> Void)) {
var assetsLibrary: ALAssetsLibrary = ALAssetsLibrary()
assetsLibrary.writeVideoAtPathToSavedPhotosAlbum(videoURL, completionBlock: { (assetURL: NSURL!, error: NSError!) -> Void in
var path: String = error == nil ? "\(assetURL)" : kEmptyString
onComplete(path: path)
})
}
我不知道自己做错了什么,我已经尝试使用 UISaveVideoAtPathToSavedPhotosAlbum 方法但没有成功。有什么想法吗?
为了提供更多信息,当从图库中选择视频时,我得到的 url 如下所示:
file:///private/var/mobile/Containers/Data/Application/D2E8E31B-CEA0-43B0-8EF9-1820F6BDE4A9/tmp/trim.AD855155-AB78-4A16-9AA8-DF2B3F39824E.MOV
当我使用相机录制新视频时,首先我有这个 URL:
file:///private/var/mobile/Containers/Data/Application/D2E8E31B-CEA0-43B0-8EF9-1820F6BDE4A9/tmp/capture/capturedvideo.MOV
当我执行 writeVideoAtPathToSavedPhotosAlbum 时,它会返回如下 URL:
assets-library://asset/asset.MOV?id=958507B5-1353-4DDC-BC07-D9CBC6126657&ext=MOV
它们都可以工作,但几天后停止工作。
最佳答案
好吧,我终于找到了解决方案,问题是您无法使用存储的 URL 直接访问照片库,您必须使用我缺少的 assetLibrary.assetForURL 方法。最后imagepickercontroller委托(delegate)方法是这样的:
func imagePickerController(picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [NSObject : AnyObject]) {
let mediaType: String = info["UIImagePickerControllerMediaType"] as! String
if mediaType == "public.movie" {
self.dismissViewControllerAnimated(true, completion: {})
if picker.sourceType == UIImagePickerControllerSourceType.PhotoLibrary {
let tempImageURL = info[UIImagePickerControllerReferenceURL] as! NSURL!
self.videoPath = tempImageURL.absoluteString
} else {
let tempImageURL = info[UIImagePickerControllerMediaURL] as! NSURL!
VideoManager.saveVideo(tempImageURL, onComplete: { (path) -> Void in
self.videoPath = path
})
}
}
}
我还遗漏了当你录制视频时,你必须使用以下方法获取 url:
let tempImageURL = info[UIImagePickerControllerMediaURL] as! NSURL!
但是当您获得视频后,您必须:
let tempImageURL = info[UIImagePickerControllerReferenceURL] as! NSURL!
希望对您有所帮助!
关于ios - 将视频保存在图库中并存储视频的路径,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/32870711/