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Swift iOS13のrootViewControllerの置き換え方(UISceneDelegateの取得)

Last updated at Posted at 2020-03-07

iOS13からAppDelegateのUIWindowの場所が変更されたそうです
https://stackoverflow.com/questions/56588843/uiapplication-shared-delegate-equivalent-for-scenedelegate-xcode11/60577215#60577215

swift
// iOS13以降
if #available(iOS 13.0, *) {
    let sceneDelegate = UIApplication.shared.connectedScenes
        .first!.delegate as! SceneDelegate
    sceneDelegate.window!.rootViewController = /* ViewController Instance */

// iOS12以前
} else {
    // UIApplication.shared.keyWindow?.rootViewController
    let appDelegate = UIApplication.shared.delegate as! AppDelegate
    appDelegate.window!.rootViewController = /* ViewController Instance */
}
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