小编val*_*lek的帖子

如何UIButton在Swift中以编程方式创建图形元素(如a )？我试图在视图中创建并添加按钮,但无法进行.

我需要做什么步骤？在Objective-C中,我们创建了一个rootViewController和detailViewController之后添加了这个控制器splitViewController.例如:

 - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
    self.window.backgroundColor = [UIColor whiteColor];
    UISplitViewController *splitViewController = [[UISplitViewController alloc] init];
    MTTRootViewController *rootViewController = [[MTTRootViewController alloc] init];
    MTTDetailedViewController *detailedViewController = [[MTTDetailedViewController alloc]init];
    splitViewController.viewControllers = [NSArray arrayWithObjects:rootViewController, detailedViewController, nil];
    [self.window setRootViewController:(UIViewController*)splitViewController];
    [self.window makeKeyAndVisible];
    return YES;
}

我怎样才能在Swift中做同样的事情？