Archiving and Unarchiving Use Case

Develop 2 simple apps or one app with 2 targets for a simple usecase. Lets name them APP_TARGET1 & APP_TARGET2. APP_TARGET1 saves an object stream using NSKeyedArchiver. let data = NSMutableData() var keyedarchiver:NSKeyedArchiver=NSKeyedArchiver(forWritingWithMutableData: data); [login to view URL](<myobject>, forKey: "rootobject"); // <myobject> can be simply a String like "content" [login to view URL](); let bytes = [login to view URL]; let len=[login to view URL]; [login to view URL](<yourpath>,...); APP_TARGET2. reads the object stream using NSKeyedUnarchiver. let data: NSData? = NSData(contentsOfFile: <yourpath>) var mykeyedunarchiver:NSKeyedUnarchiver=NSKeyedUnarchiver(forReadingWithData: data!); [login to view URL] = self; let temp:AnyObject?=[login to view URL]("rootobject") if temp==nil { blobsexists=false; }else{ let object = temp! as! <myobject_class>'; // Can be a String print(object); // Can be print(String); } The Problem I was facing with it is, that when reading the object stream in APP_TARGET2, I got an error as follow: "cannot decode object of class ([login to view URL])" I guess the problem can be solved by using the following delegate method of the protocol NSKeyedUnarchiverDelegate: func unarchiver(unarchiver: NSKeyedUnarchiver, cannotDecodeObjectOfClassName name: String, originalClasses classNames: [String]) -> AnyClass? { print("I am in unarchiver, because the classname is wrong : " + name); return ?????; } But I did not succeed, thats why I need a working sample for this usecase. interested for this challenge ? Testplan: 1. Step is trying to reproduce the error when reading back the stream. This is a must, otherwise I am not sure, if step 2 solves the issue. 2. Step solving the issue. Reading the Object