問題：
I'm new to iOS and Objective-C and the whole MVC paradigm and I'm stuck with the following:我是 iOS 和 Objective-C 以及整個MVC範式的新手，我堅持以下幾點：
I have a view that acts as a data entry form and I want to give the user the option to select multiple products.我有一個用作數據輸入表單的視圖，我想爲用戶提供選擇多個產品的選項。 The products are listed on another view with a UITableViewController and I have enabled multiple selections.產品列在另一個帶有UITableViewController視圖上，我啓用了多個選擇。
How do I transfer the data from one view to another?如何將數據從一個視圖傳輸到另一個視圖？ I will be holding the selections on the UITableView in an array, but how do I then pass that back to the previous data entry form view so it can be saved along with the other data to Core Data on submission of the form?我會將UITableView上的選擇保存在一個數組中，但是我如何將其傳遞迴之前的數據輸入表單視圖，以便在提交表單時將其與其他數據一起保存到 Core Data？
I have surfed around and seen some people declare an array in the app delegate.我四處瀏覽，看到有些人在應用程序委託中聲明瞭一個數組。 I read something about singletons , but I don't understand what these are and I read something about creating a data model.我讀了一些關於singletons 的內容，但我不明白這些是什麼，我讀了一些關於創建數據模型的內容。
What would be the correct way of performing this and how would I go about it?執行此操作的正確方法是什麼，我將如何處理？
解決方案：
參考一： https://stackoom.com/question/LrUt參考二： Passing data between view controllers