Parse.com ~ PFObject 到 Swift 数组答案

【问题标题】：Parse.com ~ PFObject to Array SwiftParse.com ~ PFObject 到 Swift 数组
【发布时间】：2016-08-17 19:27:09
【问题描述】：

我已经设置了 Parse.com 后端。在我的 iOS 应用程序中，我与此后端建立了连接，并且能够检索存储的对象。

我希望将每个特定对象存储在一个数组中。假设我的 Key:value 所在的对象，例如：Category = Coffeebars

目前我已经编写了以下代码：

let queryToGetBuildings = PFQuery(className: "Building")

queryToGetBuildings.findObjectsInBackgroundWithBlock { (objects, error) -> Void in

if error == nil {
    for object in objects!{
         print("this is an object")
         print(object)
    }
 } else {
    print("something went wrong")
 }

分别返回我的每个对象：

"this is an object"
<Building: 0x7f, objectId: yh, localId: (null)> {
    BottomText = "Opened from";
    BottomTextExtra = "05:00 until 22:00";
    Category = Coffeebars;
    MiddleText = "Suggestion:";
    MiddleTextExtra = "Apple and cinnamon";
    TimeToDestination = 5;
    TopText = Starbucks;
}

"this is an object"
<Building: 0xr, objectId: Xj, localId: (null)> {
    BottomText = "Fee per person (not for babies):";
    BottomTextExtra = "0.20";
    Category = Toilets;
    MiddleText = "Men - Women - Babies";
    MiddleTextExtra = " ";
    TimeToDestination = 5;
    TopText = "Bathroom 2 terminal A";
 }

"this is an object"
<Building: 0pr, objectId: 2q, localId: (null)> {
    BottomText = "Fee per person (not for babies):";
    BottomTextExtra = "0.20";
    Category = Toilets;
    MiddleText = "Men - Women";
    MiddleTextExtra = " ";
    TimeToDestination = 8;
    TopText = "Bathroom 3 terminal A";
}

我现在的主要问题是如何打印出（并添加到特定数组中）具有 Key:Value = Category:Toilets 的对象的所有信息？

提前致谢

【问题讨论】：

你知道 Parse.com 将被关闭吗？

标签： arrays json swift parse-platform

【解决方案1】：

如果我理解你的话，你是在问如何显示获取的数据。

首先你应该声明一个数组来保存获取的数据：

var someData = [PFObject]()

在你的闭包中添加这个self.someData.append(object)，现在你的代码应该是这样的：

let queryToGetBuildings = PFQuery(className: "Building")

queryToGetBuildings.findObjectsInBackgroundWithBlock { (objects, error) -> Void in

if error == nil {
    for object in objects!{
         print("this is an object")
         print(object)

         // Add this line
         self.someData.append(object)
    }
 } else {
    print("something went wrong")
 }

获取数据后，该显示了：

// if you are using tableView to display 
let thisData = someData[indexPath.row] 

let bottomText = thisData["columnName"] as? String
let bottomTextExtra = thisData["columnName"] as? String
let category = thisData["columnName"] as? SomeType
let middleText = thisData["columnName"] as? String
let middleTextExtra = thisData["columnName"] as? String
let timeToDestination = thisData["columnName"] as? NSNumber
let topText = thisData["columnName"] as? String

【讨论】：