将文件保存到临时目录,然后从该临时目录回调 url
Save file to temp directory, then call back the url from that temp directory
我正在使用此代码供用户将视频下载到临时目录:
@IBAction func startDownload(_ sender: UIButton) {
let videoImageUrl = "http://www.sample-videos.com/video/mp4/720/big_buck_bunny_720p_1mb.mp4"
DispatchQueue.global(qos: .default).async {
let url = NSURL(string: videoImageUrl);
let urlData = NSData(contentsOf: url! as URL);
if(urlData != nil)
{
let documentsPath = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true)[0];
let filePath="\(documentsPath)/tempFile.mp4";
DispatchQueue.main.async {
urlData?.write(toFile: filePath, atomically: true);
PHPhotoLibrary.shared().performChanges({
PHAssetChangeRequest.creationRequestForAssetFromVideo(atFileURL: NSURL(fileURLWithPath: filePath) as URL)
}) { completed, error in
if completed {
print("Video is saved!")
}
}
}
}
}
}
否则,点击按钮下载时,应用程序会在一段时间后冻结。
理想情况下,我希望将文件保存 'temporary' 到应用程序中,而不是出现在手机的照片库中。
这怎么可能?
那么,有没有办法从那个临时目录中回调文件?
这个过程是如何实现的?
非常感谢你们!
---- 编辑 ---
@IBAction func startDownload(_ sender: UIButton) {
let urlString = "\(posts[selectedIndexPath].link)"
DispatchQueue.global(qos: .default).async(execute: {
//All stuff here
print("downloadVideo");
let url=NSURL(string: urlString);
let urlData=NSData(contentsOf: url! as URL);
if((urlData) != nil)
{
let documentsPath = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true)[0]
let fileName = urlString as NSString;
let filePath="\(documentsPath)/\(fileName.lastPathComponent)";
DispatchQueue.main.async(execute: { () -> Void in
print(filePath)
urlData?.write(toFile: filePath, atomically: true);
print("video Saved to document directory of app");
})
}
})
}
@IBAction func playDownload(_ sender: UIButton) {
let urlString = "\(posts[selectedIndexPath].link)"
let documentsPath = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true)[0]
let fileName = urlString as NSString;
let filePath="\(documentsPath)/\(fileName.lastPathComponent)";
let fileURL = NSURL.init(fileURLWithPath: filePath)
let request = NSURLRequest.init(url: fileURL as URL)
print(fireURL)
print("video called from document directory of app");
// creating webView to play video, you can use player as per requirement
let webView = UIWebView.init(frame: CGRect.init(x: 0, y: 0, width: 320, height: 320))
webView.loadRequest(request as URLRequest)
self.view.addSubview(webView)
}
在控制台中这是我得到的:
/var/mobile/Containers/Data/Application/0A2D4FC0-F001-4711-916C-86C34CC5B71A/Documents/Cabin_Mono_4K_60fps.mp4?alt=media&token=32faeba5-3d9b-4090-9340-3e28986db5fa
video Saved to document directory of app
file:///var/mobile/Containers/Data/Application/0A2D4FC0-F001-4711-916C-86C34CC5B71A/DocumentsCabin_Mono_4K_60fps.mp4%3Falt=media&token=32faeba5-3d9b-4090-9340-3e28986db5fa
以下方法将视频保存到文档目录(特定于应用程序):
func downloadVideo()
{
let urlString = "http://www.sample-videos.com/video/mp4/720/big_buck_bunny_720p_1mb.mp4"
DispatchQueue.global(qos: .default).async(execute: {
//All stuff here
print("downloadVideo");
let url=NSURL(string: urlString);
let urlData=NSData(contentsOf: url! as URL);
if((urlData) != nil)
{
let documentsPath = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true)[0]
let fileName = urlString as NSString;
let filePath="\(documentsPath)/\(fileName.lastPathComponent)";
let fileExists = FileManager().fileExists(atPath: filePath)
if(fileExists){
// File is already downloaded
}
else{
//download
DispatchQueue.main.async(execute: { () -> Void in
print(filePath)
urlData?.write(toFile: filePath, atomically: true);
print("videoSaved");
})
}
}
})
}
无论你想从哪里获取视频,都可以从以下相同的文档目录中阅读它:
func GetVideo() {
let urlString = "http://www.sample-videos.com/video/mp4/720/big_buck_bunny_720p_1mb.mp4"
let documentsPath = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true)[0]
let fileName = urlString as NSString;
let filePath="\(documentsPath)/\(fileName.lastPathComponent)";
let fileURL = NSURL.init(fileURLWithPath: filePath)
let request = NSURLRequest.init(url: fileURL as URL)
// creating webView to play video, you can use player as per requirement
let webView = UIWebView.init(frame: CGRect.init(x: 0, y: 0, width: 320, height: 320))
webView.loadRequest(request as URLRequest)
self.view.addSubview(webView)
}
我正在使用此代码供用户将视频下载到临时目录:
@IBAction func startDownload(_ sender: UIButton) {
let videoImageUrl = "http://www.sample-videos.com/video/mp4/720/big_buck_bunny_720p_1mb.mp4"
DispatchQueue.global(qos: .default).async {
let url = NSURL(string: videoImageUrl);
let urlData = NSData(contentsOf: url! as URL);
if(urlData != nil)
{
let documentsPath = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true)[0];
let filePath="\(documentsPath)/tempFile.mp4";
DispatchQueue.main.async {
urlData?.write(toFile: filePath, atomically: true);
PHPhotoLibrary.shared().performChanges({
PHAssetChangeRequest.creationRequestForAssetFromVideo(atFileURL: NSURL(fileURLWithPath: filePath) as URL)
}) { completed, error in
if completed {
print("Video is saved!")
}
}
}
}
}
}
否则,点击按钮下载时,应用程序会在一段时间后冻结。
理想情况下,我希望将文件保存 'temporary' 到应用程序中,而不是出现在手机的照片库中。
这怎么可能?
那么,有没有办法从那个临时目录中回调文件?
这个过程是如何实现的?
非常感谢你们!
---- 编辑 ---
@IBAction func startDownload(_ sender: UIButton) {
let urlString = "\(posts[selectedIndexPath].link)"
DispatchQueue.global(qos: .default).async(execute: {
//All stuff here
print("downloadVideo");
let url=NSURL(string: urlString);
let urlData=NSData(contentsOf: url! as URL);
if((urlData) != nil)
{
let documentsPath = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true)[0]
let fileName = urlString as NSString;
let filePath="\(documentsPath)/\(fileName.lastPathComponent)";
DispatchQueue.main.async(execute: { () -> Void in
print(filePath)
urlData?.write(toFile: filePath, atomically: true);
print("video Saved to document directory of app");
})
}
})
}
@IBAction func playDownload(_ sender: UIButton) {
let urlString = "\(posts[selectedIndexPath].link)"
let documentsPath = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true)[0]
let fileName = urlString as NSString;
let filePath="\(documentsPath)/\(fileName.lastPathComponent)";
let fileURL = NSURL.init(fileURLWithPath: filePath)
let request = NSURLRequest.init(url: fileURL as URL)
print(fireURL)
print("video called from document directory of app");
// creating webView to play video, you can use player as per requirement
let webView = UIWebView.init(frame: CGRect.init(x: 0, y: 0, width: 320, height: 320))
webView.loadRequest(request as URLRequest)
self.view.addSubview(webView)
}
在控制台中这是我得到的:
/var/mobile/Containers/Data/Application/0A2D4FC0-F001-4711-916C-86C34CC5B71A/Documents/Cabin_Mono_4K_60fps.mp4?alt=media&token=32faeba5-3d9b-4090-9340-3e28986db5fa
video Saved to document directory of app
file:///var/mobile/Containers/Data/Application/0A2D4FC0-F001-4711-916C-86C34CC5B71A/DocumentsCabin_Mono_4K_60fps.mp4%3Falt=media&token=32faeba5-3d9b-4090-9340-3e28986db5fa
以下方法将视频保存到文档目录(特定于应用程序):
func downloadVideo()
{
let urlString = "http://www.sample-videos.com/video/mp4/720/big_buck_bunny_720p_1mb.mp4"
DispatchQueue.global(qos: .default).async(execute: {
//All stuff here
print("downloadVideo");
let url=NSURL(string: urlString);
let urlData=NSData(contentsOf: url! as URL);
if((urlData) != nil)
{
let documentsPath = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true)[0]
let fileName = urlString as NSString;
let filePath="\(documentsPath)/\(fileName.lastPathComponent)";
let fileExists = FileManager().fileExists(atPath: filePath)
if(fileExists){
// File is already downloaded
}
else{
//download
DispatchQueue.main.async(execute: { () -> Void in
print(filePath)
urlData?.write(toFile: filePath, atomically: true);
print("videoSaved");
})
}
}
})
}
无论你想从哪里获取视频,都可以从以下相同的文档目录中阅读它:
func GetVideo() {
let urlString = "http://www.sample-videos.com/video/mp4/720/big_buck_bunny_720p_1mb.mp4"
let documentsPath = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true)[0]
let fileName = urlString as NSString;
let filePath="\(documentsPath)/\(fileName.lastPathComponent)";
let fileURL = NSURL.init(fileURLWithPath: filePath)
let request = NSURLRequest.init(url: fileURL as URL)
// creating webView to play video, you can use player as per requirement
let webView = UIWebView.init(frame: CGRect.init(x: 0, y: 0, width: 320, height: 320))
webView.loadRequest(request as URLRequest)
self.view.addSubview(webView)
}