请考虑下面的代码: override var keyCommands: [UIKeyCommand]? {
var commands:[UIKeyCommand] = []
let numbers = ["0","1","2","3","4","5","6","7","8","9","A","B","C","D","E","F","G","H","I","J","K","L"
我删除@UIApplicationMain中的AppDelegate.swift并写下如下的main.swift,但程序仍然无法启动keyPressed函数。但是每个keydown都会执行print("send event2")。 如何启动keyPressed函数?这个程序有问题吗? import UIKit
import Foundation
class TApplication: UIA