在包含 return goal //**//
的行上,我的程序崩溃并给出错误:“致命:数组无法从 Objective-C 桥接”。有谁知道这是什么出处吗?
func saveGoals (goals : [Goal]) {
var updatedGoals = NSKeyedArchiver.archivedDataWithRootObject(goals)
NSUserDefaults.standardUserDefaults().setObject(updatedGoals, forKey: "Goals")
NSUserDefaults.standardUserDefaults().synchronize()
}
func loadCustomObjectWithKey() -> [Goal?] {
if let encodedObject : NSData = NSUserDefaults.standardUserDefaults().objectForKey("Goals") as? NSData {
var encodedObject : NSData? = NSUserDefaults.standardUserDefaults().objectForKey("Goals") as? NSData
var goal : [Goal] = NSKeyedUnarchiver.unarchiveObjectWithData(encodedObject!) as [Goal]
return goal //**//
} else {
return [Goal]()
}
}
class GoalsViewController: MainPageContentViewController, UITableViewDelegate, UITableViewDataSource {
@IBOutlet var tableView: GoalsTableView!
var goalsArray : Array<Goal> = [] //
override func viewDidLoad() {
super.viewDidLoad()
self.tableView.delegate = self
self.tableView.dataSource = self
if var storedGoals: [Goal] = loadCustomObjectWithKey() as? [Goal] {
goalsArray = storedGoals
}
//retrieve data.
if var storedGoalList: [Goal] = NSUserDefaults.standardUserDefaults().objectForKey("GoalList") as? [Goal]{
goalsArray = storedGoalList;
}
var goal = Goal(title: "Walk the Dog")
goalsArray.append(goal)
saveGoals(goalsArray)
self.tableView?.reloadData()
tableView.estimatedRowHeight = 44.0
tableView.rowHeight = UITableViewAutomaticDimension
}
}
最佳答案
您试图将 [Goal] 返回为 [Goal?]。由于数组内容类型不匹配(并且无法匹配),您会收到运行时异常。将返回类型更改为 [Goal],特别是因为您总是会返回一些东西。
关于ios - NSUserDefault 自定义对象错误 - "array cannot be bridged from Objective-C",我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/26173939/