Core data '；任何对象'；没有名为'的成员；联系人姓名'；阻止我的循环

我正在寻找从函数中的coredata读取数据并在事后循环结果的最佳方法

我尝试了很多方法，但似乎在尝试获取每个对象中的特定数据片段时遇到了麻烦

这是我的设置

    func readData()->NSArray{
    let entityName:String = "Properties"
    let appDel:AppDelegate = UIApplication.sharedApplication().delegate as AppDelegate
    let context:NSManagedObjectContext = appDel.managedObjectContext

    // Specify what this will be working with
    let request = NSFetchRequest(entityName: entityName)

    // This will return instance of the object needed. Without which this would be
    // a pain to work with. This bit saves a few steps.
    request.returnsObjectsAsFaults = false;

    // Get the data and put it into a variable
    var results = context.executeFetchRequest(request, error: nil)

    return results!
}

我把它叫做这里

var properties = Properties()
    var getInfo = properties.readData()
    println(getInfo)

    for eachInfo:AnyObject in getInfo{
        println(eachInfo)
    }

这样的话就可以把这样的事情抛到脑后了

<NSManagedObject: 0x7f87fa711d60> (entity: Properties; id: 0xd000000000040000 <x-coredata://F627AD12-3CEC-4117-8294-616ADEE068DC/Properties/p1> ; data: {
acreage = 0;
conditionId = 0;
contactBusinessName = nil;
contactEmail = nil;
contactName = Bob;
contactPhoneNumber = 456456456;
isFav = nil;
latitude = 0;
longitude = 0;
price = 0;
propertyCity = nil;
propertyId = nil;
propertyState = nil;
propertyStreetAddress = nil;
propertyType = 0;
propertyZip = nil;
squareFeet = 0;
year = 0;

我得到以下错误

“'AnyObject'没有名为'contactName'的成员”

我确信我遗漏了一些简单的东西，但我在网上找不到

任何帮助或更好的方法都将不胜感激

---

回答。

首先，向核心数据对象添加名称空间。

其次，强类型化函数的输出，以便将数据类型化为自定义对象。在这种情况下，它被称为“属性”

试一试

func readData（）->数组{
让entityName:String=“属性”
让appDel:AppDelegate=UIApplication.sharedApplication（）.delegate作为AppDelegate
let context:NSManagedObjectContext=appDel.managedObjectContext
//指定将使用的内容
let request=NSFetchRequest（entityName:entityName）
//这将返回所需对象的实例。如果没有该实例，则
//工作起来很痛苦。这一点节省了一些步骤。
request.returnsObjectsAsFaults=false；
//获取数据并将其放入变量中
var results=context.executeFetchRequest（请求，错误：nil）
以数组形式返回结果
}
var getInfo:Array=properties.readData（）
println（getInfo）
对于getInfo中的每个信息{
println（信息联系人姓名）
}

我这里没有Mac电脑，但我很确定这样的东西可以用。这样您就拥有了强类型数据。

找到了它

当将结果作为NSArray传递回时，在本例中，需要将其强制转换到NSManageObject类中

因此，正确的调用和返回中单个信息的显示如下所示

var properties = Properties()
    var getInfo = properties.readData()
    println(getInfo)

    for eachInfo:AnyObject in getInfo{

        // Cast AnyObject type into the equavalent NSManagedObject.  
        let info = eachInfo as Properties
        println(info.contactName)

    }

---

即使我这样做了，在接收端，它仍然希望将其视为“任何对象”。导致了与此相关的问题。。getInfo{println（eachInfo.contactName）}中eachInfo:Array的var properties=properties（）var getInfo=properties.readData（），这会导致EXC\u BAD\u指令错误。var properties=properties（）var getInfo=properties.readData（）用于getInfo{println（eachInfo.contactName）}中的每个hinfo。您的方法确实有效。我只需要确保在设置Coredata对象时添加了名称空间。我会把答案贴出来。

    func readData()->Array<Properties>{


    let appDel:AppDelegate = UIApplication.sharedApplication().delegate as AppDelegate
    let context:NSManagedObjectContext = appDel.managedObjectContext

    // Specify what this will be working with
    let request = NSFetchRequest(entityName: entityName)

    // This will return instance of the object needed. Without which this would be
    // a pain to work with. This bit saves a few steps.
    request.returnsObjectsAsFaults = false;

    // Get the data and put it into a variable
    var results = context.executeFetchRequest(request, error: nil)

    return results! as Array<Properties>


}

       var properties = Properties()
    var getInfo = properties.readData()

    for eachInfo in getInfo{

        println(eachInfo.contactName)

    }

func readData()->Array<Properties>{
    let entityName:String = "Properties"
    let appDel:AppDelegate = UIApplication.sharedApplication().delegate as AppDelegate
    let context:NSManagedObjectContext = appDel.managedObjectContext

    // Specify what this will be working with
    let request = NSFetchRequest(entityName: entityName)

    // This will return instance of the object needed. Without which this would be
    // a pain to work with. This bit saves a few steps.
    request.returnsObjectsAsFaults = false;

   // Get the data and put it into a variable
   var results = context.executeFetchRequest(request, error: nil)

   return results! as Array<Properties>
}

var getInfo:Array<Properties> = properties.readData()
println(getInfo)

for eachInfo in getInfo{
    println(info.contactName)

}

var properties = Properties()
    var getInfo = properties.readData()
    println(getInfo)

    for eachInfo:AnyObject in getInfo{

        // Cast AnyObject type into the equavalent NSManagedObject.  
        let info = eachInfo as Properties
        println(info.contactName)

    }