我正在尝试将获取请求的结果放入数组中。我的代码：
let appDelegate = UIApplication.sharedApplication().delegate as! AppDelegate
let managedContext = appDelegate.managedObjectContext
let fetchRequest = NSFetchRequest(entityName: "CLIENTS")
var mobClients = [NSManagedObject]()
var arrayAllPhoneNumbers = [String]()
do {
let results = try managedContext.executeFetchRequest(fetchRequest)
mobClients = results as! [NSManagedObject]
for clientPhoneNumber in mobClients {
let myClientPhoneNumber = clientPhoneNumber.valueForKey("clientsMobilePhoneNumber") as! String
print(myClientPhoneNumber)
//The numbers print out just fine, one below the other
//
//Now the results need to go into the array I've declared above ---> arrayAllPhoneNumbers
messageVC.recipients = arrayAllPhoneNumbers // Optionally add some tel numbers
}
} catch
let error as NSError {
print("Could not fetch \(error), \(error.userInfo)")
}
如图所示，所有电话号码都需要捕获在一个数组中。我该如何做到这一点？
使用以下代码代替 for 循环及其内部的代码：
arrayAllPhoneNumbers = mobClients.map({ clientPhoneNumber in
clientPhoneNumber.valueForKey("clientsMobilePhoneNumber") as! String
})
messageVC.recipients = arrayAllPhoneNumbers
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