基于Tableview数据更改了Swift Tableview单元格按钮图像

Question

I am trying to parse JSON and appending JSON response value within tableview array. Here below response subcategory few objects I am getting values but some of them I am getting null.

{
    "category": [
    {
    "id": 0,
    "subcategory": [   //Table cell button need to show green color
    {
    "subcategory_id": 10
    }
    ]
    },
    {
    "id": 0,
    "subcategory": null //Table cell button need to show red color
    }
    ]
}

1. I need to append the values into array like : [10, null,....] . if subcategory null means I need to store null otherwise its value.

2. After applying to cell, If the value is null need to change cell button Image.

I tried my best to resolved out of range but I didn't get well result for above scenario.

Here is my code

 if indexPath.row < id.count {
            cell.accessibilityValue = String(id[indexPath.row]) // If the cell.accessibilityValue not null then need to change cell button image.
        }
        cell.name_Label.text = name[indexPath.row]
        cell.city_Label.text = city[indexPath.row]

Array appending from JSON self.id.append(items) . I am getting output like [10] but actual result should be [10,null] . The length of the array which is not right, i need the data to be "null" if it is null or nil because i get values by index and each index is know to be null or with value but it must be there

Answer 1

1. id should be an array of optional Int

2. subcategory_id should be optional Int

    var subcategory_id: Int? var id: [Int?] = [] if let subCat = subcategory_id { id.append(subCat) } else { id.append(nil) // id=[nil] } 

   in your cellForAtRow overload

   id is an array of optional Int ( Int? ) you have to unwrap it

    cell.id_Label.text = id[indexPath.row]! 

   or

    if let i = id[indexPath.row] { cell.id_Label.text = "\\(i)" } else { print("id is nil") }