如何在swift 4中的didSelectItemAt IndexPath中将字典类型数据嵌入到数组中？

Question

我有userDetails个数据。现在我想将userDetails中的didSelectItemAt IndexPath发送给另一个viewController。

怎么做？

这是我的一段代码

var userDetails : UserDetails! 


func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell { 

let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "CollectionViewCell", for: indexPath) as! CollectionViewCell 
let imageUrl = URL(string: Constant.url.imageBaseUrl + userDetails.user_medias[indexPath.row].thumbnail_url) 
cell.imgvw.kf.setImage(with: imageUrl)

return cell 
} 

func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
        let vc = self.storyboard!.instantiateViewController(withIdentifier: Constant.vc.DetailsVC) as! DetailsVC
        vc.userDetails = userList[indexPath.row]
        self.show(vc, sender: self)
    }

 // in number of rows in section i am showing this 
 func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
        return userDetails.user_medias.count
    }

如何在userDetails中嵌入userList数据，以便我可以在indexpath的didselcect项目中发送数据

Answer 1

尝试使用这些案例，如果它可以帮助你

var myDict : [String : String] = ["ios":"1","Geek":"2","IosGeek":"4"]

///First case - Map the Dict
let onlyValues = myDict.map({$0.1})
print(onlyValues) // Print Only Values

///Second Case - Using a Seprate class
class sortData
{
    var iosVal : String!
    var geekVal : String!
    var iosGeekVal : String!

    init(parameter : [String:String]) {
        iosVal = parameter["ios"]
        geekVal = parameter["Geek"]
        iosGeekVal = parameter["IosGeek"]
    }
}

class DestinationVC : UIViewController {
    var passedData : sortData!
}

///Getting Data Using Class
var sortingData : sortData?
sortingData = sortData.init(parameter: myDict)
print(sortingData?.iosVal!) // "1"
/// pass this class in Your destinationVC
/// And Use as
/// sortingData?.iosVal! // sortingData?.geekVal! // sortingData?.iosGeekVal!

包含评论的示例代码请检查

https://drive.google.com/open?id=1rWeg6PMHQH2oL0wMS1ed9fGkHkvLAIrP

Answer 2

从http://www.json4swift.com/

创建userDetails响应模型

声明您的用户类型的阵列

var yourArray = [User]()

在API响应中使用以下代码： -

if let data = data["userDetails"] as? NSArray {                             
    self.yourArray.append(contentsOf: User.modelsFromDictionaryArray(array: data))
}

在didSelect方法中使用以下代码： -

let vc = self.storyboard!.instantiateViewController(withIdentifier: Constant.vc.DetailsVC) as! DetailsVC
vc.userDetails = yourArray[indexPath.row]
self.show(vc, sender: self)

Answer 3

在DetailsVC创建对象

var myUser : [String : Any] = [:]

ViewDidLoad

中的

let id = myUser["id"]
let userId =  myUser["user_id"]
let catId =  myUser["category_id"]

在FirstVC中didselect

let vc = self.storyboard!.instantiateViewController(withIdentifier: Constant.vc.DetailsVC) as! DetailsVC
vc.myUser = userDetails.user_medias[indexPath.row] as! [String : Any]
self.show(vc, sender: self)