在Swift中实现NSCoding?
我在这里实现了一个示例: 我在两条语句中得到错误“预期声明”: documentDirectories=NSSearchPathForDirectoriesInDomains(.DocumentDirectory、.UserDomainMask,true) 及 car1.1年=1957年 想法在Swift中实现NSCoding?,swift,nscoding,Swift,Nscoding,我在这里实现了一个示例: 我在两条语句中得到错误“预期声明”: documentDirectories=NSSearchPathForDirectoriesInDomains(.DocumentDirectory、.UserDomainMask,true) 及 car1.1年=1957年 想法 class CarData { var documentDirectories:NSArray = [] var documentDirectory:String = "" v
class CarData {
var documentDirectories:NSArray = []
var documentDirectory:String = ""
var path:String = ""
var unarchivedCars:NSArray = []
var allCars:NSArray = []
// Create a filepath for archiving.
documentDirectories = NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true)
// Get document directory from that list
documentDirectory = documentDirectories.objectAtIndex(0) as String
// append with the .archive file name
path = documentDirectory.stringByAppendingPathComponent("swift_archiver_demo.archive")
var car1:Car! = Car()
var car2:Car! = Car()
var car3:Car! = Car()
car1.year = 1957
car1.make = "Chevrolet"
car1.model = "Bel Air"
car2.year = 1964
car2.make = "Dodge"
car2.model = "Polara"
car3.year = 1972
car3.make = "Plymouth"
car3.model = "Fury"
allCars = [car1, car2, car3]
// The 'archiveRootObject:toFile' returns a bool indicating
// whether or not the operation was successful. We can use that to log a message.
if NSKeyedArchiver.archiveRootObject(allCars, toFile: path) {
println("Success writing to file!")
} else {
println("Unable to write to file!")
}
// Now lets unarchive the data and put it into a different array to verify
// that this all works. Unarchive the objects and put them in a new array
unarchivedCars = NSKeyedUnarchiver.unarchiveObjectWithFile(path) as NSArray
// Output the new array
for car : AnyObject in unarchivedCars {
println("Here's a \(car.year) \(car.make) \(car.model)")
}
您正在类声明中编写代码! 声明第一组变量后的任何代码都需要在函数内部。例如
init()
函数