自动获取根控制器和windowScene

Example/Example.xcodeproj/project.pbxproj

@@ -32,7 +32,7 @@
 		CD8BFF1B23014867001E08DD /* TestGuardVC.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = TestGuardVC.swift; sourceTree = "<group>"; };
 		CD8BFF1D230148DD001E08DD /* BaseListVC.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = BaseListVC.swift; sourceTree = "<group>"; };
 		CD8BFF1F23014CB5001E08DD /* EmptyVC.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = EmptyVC.swift; sourceTree = "<group>"; };
-		CDA4E03820D3935B00CD2A0C /* ProHUD (Xcode11之前的老项目).app */ = {isa = PBXFileReference; explicitFileType = wrapper.application; includeInIndex = 0; path = "ProHUD (Xcode11之前的老项目).app"; sourceTree = BUILT_PRODUCTS_DIR; };
+		CDA4E03820D3935B00CD2A0C /* ProHUD 老项目.app */ = {isa = PBXFileReference; explicitFileType = wrapper.application; includeInIndex = 0; path = "ProHUD 老项目.app"; sourceTree = BUILT_PRODUCTS_DIR; };
 		CDA4E03B20D3935B00CD2A0C /* AppDelegate.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = AppDelegate.swift; sourceTree = "<group>"; };
 		CDA4E03D20D3935B00CD2A0C /* ViewController.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ViewController.swift; sourceTree = "<group>"; };
 		CDA4E04020D3935B00CD2A0C /* Base */ = {isa = PBXFileReference; lastKnownFileType = file.storyboard; name = Base; path = Base.lproj/Main.storyboard; sourceTree = "<group>"; };
@@ -83,7 +83,7 @@
 		CDA4E03920D3935B00CD2A0C /* Products */ = {
 			isa = PBXGroup;
 			children = (
-				CDA4E03820D3935B00CD2A0C /* ProHUD (Xcode11之前的老项目).app */,
+				CDA4E03820D3935B00CD2A0C /* ProHUD 老项目.app */,
 			);
 			name = Products;
 			sourceTree = "<group>";
@@ -127,7 +127,7 @@
 			);
 			name = Example;
 			productName = Example;
-			productReference = CDA4E03820D3935B00CD2A0C /* ProHUD (Xcode11之前的老项目).app */;
+			productReference = CDA4E03820D3935B00CD2A0C /* ProHUD 老项目.app */;
 			productType = "com.apple.product-type.application";
 		};
 /* End PBXNativeTarget section */
@@ -383,7 +383,7 @@
 				);
 				MARKETING_VERSION = 2.0;
 				PRODUCT_BUNDLE_IDENTIFIER = com.xaoxuu.ProHUDExample;
-				PRODUCT_NAME = "ProHUD (Xcode11之前的老项目)";
+				PRODUCT_NAME = "ProHUD 老项目";
 				PROVISIONING_PROFILE = "b32d51a3-c20b-408f-aebf-11d2ea3811cd";
 				PROVISIONING_PROFILE_SPECIFIER = "";
 				SWIFT_OBJC_BRIDGING_HEADER = "Example/Example-Bridging-Header.h";
@@ -409,7 +409,7 @@
 				);
 				MARKETING_VERSION = 2.0;
 				PRODUCT_BUNDLE_IDENTIFIER = com.xaoxuu.ProHUDExample;
-				PRODUCT_NAME = "ProHUD (Xcode11之前的老项目)";
+				PRODUCT_NAME = "ProHUD 老项目";
 				PROVISIONING_PROFILE = "b32d51a3-c20b-408f-aebf-11d2ea3811cd";
 				PROVISIONING_PROFILE_SPECIFIER = "";
 				SWIFT_OBJC_BRIDGING_HEADER = "Example/Example-Bridging-Header.h";

Example/Example/AppDelegate.swift

@@ -22,14 +22,9 @@ class AppDelegate: UIResponder, UIApplicationDelegate {
         window = UIWindow.init(frame: UIScreen.main.bounds)
         window?.rootViewController = vc
         window?.makeKeyAndVisible()
-        
         ProHUD.config { (cfg) in
-            cfg.rootViewController = vc
-            if #available(iOS 13.0, *) {
-                cfg.windowScene = window?.windowScene
-            } else {
-                // Fallback on earlier versions
-            }
+            // 可自动获取根控制器，如果获取失败请主动设置此值
+            // cfg.rootViewController = vc
             cfg.alert { (a) in
                 a.titleFont = .bold(22)
                 a.bodyFont = .regular(17)

Example/Example/ViewController.swift

@@ -15,7 +15,7 @@ class ViewController: BaseListVC {
     override func viewDidLoad() {
         super.viewDidLoad()
         // Do any additional setup after loading the view.
-        title = "ProHUD"
+        title = "\(Bundle.main.infoDictionary?["CFBundleName"] ?? "ProHUD")"
     }
     
     override var titles: [String] {

Source/Alert/AlertController.swift

@@ -95,7 +95,7 @@ public extension Alert {
             window.resignKey()
             window.addSubview(view)
             if #available(iOS 13.0, *) {
-                window.windowScene = cfg.windowScene
+                window.windowScene = cfg.windowScene ?? UIApplication.shared.windows.last?.windowScene
             } else {
                 // Fallback on earlier versions
             }

Source/Guard/GuardController.swift

@@ -99,7 +99,7 @@ public extension Guard {
     /// 推入某个视图控制器
     /// - Parameter viewController: 视图控制器
     @discardableResult func push(to viewController: UIViewController? = nil) -> Guard {
-        func f(_ vc: UIViewController) {
+        func f(_ vc: UIViewController) -> Guard {
             view.layoutIfNeeded()
             vc.addChild(self)
             vc.view.addSubview(view)
@@ -114,10 +114,25 @@ public extension Guard {
             UIView.animateForGuard {
                 self.privTranslateIn()
             }
+            return self
         }
         if let vc = viewController ?? cfg.rootViewController {
-            f(vc)
+            return f(vc)
         } else {
+            // 尝试获取RootVC
+            let ws = UIApplication.shared.windows.reversed().filter { (w) -> Bool in
+                // 去除掉诸如 UITextEffectsWindow 这样的类，去掉隐藏的Window
+                if "\(type(of:w))" == "UIWindow" && w.isHidden == false {
+                    return true
+                } else {
+                    return false
+                }
+            }
+            for w in ws {
+                if let vc = w.rootViewController {
+                    return f(vc)
+                }
+            }
             debug("请传入需要push到的控制器")
         }
         return self

Source/Toast/ToastController.swift

@@ -109,19 +109,19 @@ public extension Toast {
         let config = cfg.toast
         let isNew: Bool
         if self.window == nil {
-            let w = UIWindow(frame: .zero)
-            self.window = w
+            let window = UIWindow(frame: .zero)
+            self.window = window
             if #available(iOS 13.0, *) {
-                w.windowScene = cfg.windowScene
+                window.windowScene = cfg.windowScene ?? UIApplication.shared.windows.last?.windowScene
             } else {
                 // Fallback on earlier versions
             }
-            w.windowLevel = UIWindow.Level(5000)
-            w.backgroundColor = .clear
-            w.layer.shadowRadius = 8
-            w.layer.shadowOffset = .init(width: 0, height: 5)
-            w.layer.shadowOpacity = 0.2
-            w.isHidden = false
+            window.windowLevel = UIWindow.Level(5000)
+            window.backgroundColor = .clear
+            window.layer.shadowRadius = 8
+            window.layer.shadowOffset = .init(width: 0, height: 5)
+            window.layer.shadowOpacity = 0.2
+            window.isHidden = false
             isNew = true
         } else {
             isNew = false