问题描述
我尝试将给定视频保存在本地，然后需要那些保存的视频才能在我的应用中播放视频。我无法处理保存的视频。这是我的省钱尝试：
func saveVideodocumentDirectory(url : URL){
let fileManager = FileManager.default
let paths = (NSSearchPathForDirectoriesInDomains(.documentDirectory,.userDomainMask,true)[0] as Nsstring).appendingPathComponent(".MOV")
do{
let videoData = try Data(contentsOf: url)
fileManager.createFile(atPath: paths as String,contents: videoData,attributes: nil)
}catch{
//
}
}
func getVideo(){
let fileManager = FileManager.default
let videoPAth = (self.getDirectoryPath() as Nsstring).appendingPathComponent(".MOV")
if fileManager.fileExists(atPath: videoPAth){
print(videoPAth)
play(url: URL(string: videoPAth)!)
}else{
print("No Video")
}
}
这是我的播放视频功能：
func play(url : URL)
{
let player = AVPlayer(url: url)
let playerViewController = AVPlayerViewController()
playerViewController.player = player
present(playerViewController,animated: true)
{
playerViewController.player!.play()
}
}
解决方法
尝试使用$('.decisionList').change(function () {
const i = this.selectedIndex;
var date = $(this).closest('tr').find('.dates');
if (i == 1 && ($('.invoice').val() < date.val())) { //if InvDate < ManualDate
date.val($('.invoice').val()); //then we should return InvDate to our data input
} else {
date.val(); //if not - return ManualDate
}
$(this).closest('tr').find('.decisionList')[2]; //make 'None' (index=2) as a selected option
});
代替let attribute = 'z';
let value= 111;
// Which one and why or when should i use either one of these?
// JS Object
let w = { data: function (param) { return param } };
w.constructor.prototype.z = function (param) { console.log(w.data(param)) };
new w[attribute](value);
//JS Function
let x = function(param){
this.data=param;
this.z = function(){ console.log(this.data); };
return this;
};
new x(value)[attribute]();
// JS Class
class y {
constructor (param) { this.data = param;};
z() { console.log(this.data)};
};
new y(value)[attribute]();
。
Filemanager.createFile()此外，我建议先创建一个文件夹（从answer开始）。
write然后，您可以像这样保存：
let videoData = try Data(contentsOf: url)
try videoData.write(to: paths,options: .atomic)
这将为您省去extension URL {
static func createFolder(folderName: String) -> URL? {
let fileManager = FileManager.default
// Get document directory for device,this should succeed
if let documentDirectory = fileManager.urls(for: .documentDirectory,in: .userDomainMask).first {
// Construct a URL with desired folder name
let folderURL = documentDirectory.appendingPathComponent(folderName)
// If folder URL does not exist,create it
if !fileManager.fileExists(atPath: folderURL.path) {
do {
// Attempt to create folder
try fileManager.createDirectory(atPath: folderURL.path,withIntermediateDirectories: true,attributes: nil)
} catch {
// Creation failed. Print error & return nil
print(error.localizedDescription)
return nil
}
}
// Folder either exists,or was created. Return URL
return folderURL
}
// Will only be called if document directory not found
return nil
}
}
的麻烦。