Creating 2D SwiftyJSON Array in iOS - ios

Question

I am creating a custom iOS keyboard and am trying to create a function that will use a JSON dict to see what symbol to use.
Here is my function:
func switchSymbols(option: Int) {
for view in self.view.subviews {
if let button = view as? UIButton {
let buttonTag = button.tag
if (buttonTag > 0 && buttonTag < 100) {
if let text = symbolsDict?[buttonTag][option].stringValue {
print(symbolsDict)
button.setTitle(text, for: .normal)
}
}
}
}
}
And here is the factory function to create the lookup dict:
func symbolsDictFactory() -> JSON {
var dict:JSON = [:]
dict[1][0] = "1"
dict[1][1] = "["
dict[2][0] = "2"
dict[2][1] = "]"
print(dict)
return dict
}
Unfortunately, this second function produces a blank JSON array.
Little lost. Any help appreciated. Thanks in advance.

Answer 1

I would recommend not using JSON for data and models within your application. Your internal models should be strongly typed.
In fact, JSON is really of type [String: Any] which is not what you need since both the button tag and option values are integers. What you describe in your code is [Int: [Int: String]]. There is nothing wrong with creating a function to return your symbol lookup table. However since the table is constant, it may be simpler to just make it a property of your containing class like this.
class View: UIViewController {
private let titleForButton = [
1: [0: "1", 1: "["],
2: [0: "2", 1: "]"],
// ...
99: [0: "😊", 1: "😀"]
]
func switchSymbols(option: Int) {
for view in self.view.subviews {
if let button = view as? UIButton {
if let title = titleForButton[button.tag]?[option] {
button.setTitle(title, for: .normal)
}
}
}
}
}
Also, the bounds checking that you had for button.tag being within [1..<100] is unnecessary since the return value for the dictionary lookup is optional anyways and will not set a title for a button tag out of range.