iOS development-Data persistence for Swift & Universal file storage

Universal file Storage

1 Import UIKit2 3 classViewcontroller:uiviewcontroller {4 5@IBOutlet weak var textfield:uitextfield!6     7 @IBAction func btnsave (Sender:uibutton) {8var text = Textfield.text asNSString9         Ten         //write to file (serializable) OneText.writetofile (GetPath ("Data.txt"), atomically:false, encoding:nsutf8stringencoding, Error:nil) A          -     } -      the @IBAction func btnLoad (Sender:uibutton) { -         //get a TXT file directory -var Txtfilepath = GetPath ("Data.txt")//String Data -         ifNsfilemanager.defaultmanager (). Fileexistsatpath (Txtfilepath) { +var text =NSString (Contentsoffile:txtfilepath, encoding:nsutf8stringencoding, Error:nil) -Textfield.text = text as!String +         } A          at     } -      -     Overridefunc viewdidload () { - super.viewdidload () -         /** - Generic File Store classes (dictionaries and arrays) that can be serialized in NSData - nsstring (String) to NSNumber (Int, Double, Float) + NSDate - Nsarray (Array) the nsdictionary *         */ $ /** Objects created by themselves cannot bePanax Notoginseng no other class that can serialize an object in front of it (uicolor,uiimage) - not in itself . the Big Data Half not +         */ A  the          +     } -  $     Overridefunc didreceivememorywarning () { $ super.didreceivememorywarning () -         //Dispose of any resources the can be recreated. -     } the //Get file directory -Func GetPath (filename:string)String {Wuyivar paths = Nssearchpathfordirectoriesindomains (Nssearchpathdirectory.documentdirectory, Nssearchpathdomainmask.userdomainmask,true) thevar documents = paths[0] as?String -         returndocuments!. stringByAppendingPathComponent (fileName) Wu     } -  About}

iOS development-Data persistence for Swift & Universal file storage