diff --git a/Example/Example/AppDelegate.swift b/Example/Example/AppDelegate.swift
index 25ae9a1..e1991e1 100644
--- a/Example/Example/AppDelegate.swift
+++ b/Example/Example/AppDelegate.swift
@@ -73,3 +73,24 @@ class AppDelegate: UIResponder, UIApplicationDelegate {
 
 }
 
+extension ProHUD.Scene {
+    static var confirm: ProHUD.Scene {
+        var scene = ProHUD.Scene(identifier: "confirm")
+        scene.image = UIImage(named: "ProHUDMessage")
+        return scene
+    }
+    static var delete: ProHUD.Scene {
+        var scene = ProHUD.Scene(identifier: "delete")
+        scene.image = UIImage(named: "ProHUDTrash")
+        scene.title = "确认删除"
+        scene.message = "此操作不可撤销"
+        return scene
+    }
+    static var buy: ProHUD.Scene {
+        var scene = ProHUD.Scene(identifier: "buy")
+        scene.image = UIImage(named: "ProHUDBuy")
+        scene.title = "确认付款"
+        scene.message = "一旦购买拒不退款"
+        return scene
+    }
+}
diff --git a/Example/Example/Assets.xcassets/ProHUDBuy.imageset/Contents.json b/Example/Example/Assets.xcassets/ProHUDBuy.imageset/Contents.json
new file mode 100644
index 0000000..50c90e6
--- /dev/null
+++ b/Example/Example/Assets.xcassets/ProHUDBuy.imageset/Contents.json
@@ -0,0 +1,22 @@
+{
+  "images" : [
+    {
+      "idiom" : "universal",
+      "scale" : "1x"
+    },
+    {
+      "idiom" : "universal",
+      "filename" : "ProHUDBuy@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "universal",
+      "filename" : "ProHUDBuy@3x.png",
+      "scale" : "3x"
+    }
+  ],
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  }
+}
\ No newline at end of file
diff --git a/Example/Example/Assets.xcassets/ProHUDBuy.imageset/ProHUDBuy@2x.png b/Example/Example/Assets.xcassets/ProHUDBuy.imageset/ProHUDBuy@2x.png
new file mode 100644
index 0000000..2e97e5c
Binary files /dev/null and b/Example/Example/Assets.xcassets/ProHUDBuy.imageset/ProHUDBuy@2x.png differ
diff --git a/Example/Example/Assets.xcassets/ProHUDBuy.imageset/ProHUDBuy@3x.png b/Example/Example/Assets.xcassets/ProHUDBuy.imageset/ProHUDBuy@3x.png
new file mode 100644
index 0000000..32e5d56
Binary files /dev/null and b/Example/Example/Assets.xcassets/ProHUDBuy.imageset/ProHUDBuy@3x.png differ
diff --git a/Example/Example/Assets.xcassets/ProHUDMessage.imageset/Contents.json b/Example/Example/Assets.xcassets/ProHUDMessage.imageset/Contents.json
new file mode 100644
index 0000000..d050e76
--- /dev/null
+++ b/Example/Example/Assets.xcassets/ProHUDMessage.imageset/Contents.json
@@ -0,0 +1,22 @@
+{
+  "images" : [
+    {
+      "idiom" : "universal",
+      "scale" : "1x"
+    },
+    {
+      "idiom" : "universal",
+      "filename" : "ProHUDMessage@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "universal",
+      "filename" : "ProHUDMessage@3x.png",
+      "scale" : "3x"
+    }
+  ],
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  }
+}
\ No newline at end of file
diff --git a/Example/Example/Assets.xcassets/ProHUDMessage.imageset/ProHUDMessage@2x.png b/Example/Example/Assets.xcassets/ProHUDMessage.imageset/ProHUDMessage@2x.png
new file mode 100644
index 0000000..9b5aa6a
Binary files /dev/null and b/Example/Example/Assets.xcassets/ProHUDMessage.imageset/ProHUDMessage@2x.png differ
diff --git a/Example/Example/Assets.xcassets/ProHUDMessage.imageset/ProHUDMessage@3x.png b/Example/Example/Assets.xcassets/ProHUDMessage.imageset/ProHUDMessage@3x.png
new file mode 100644
index 0000000..a7322dd
Binary files /dev/null and b/Example/Example/Assets.xcassets/ProHUDMessage.imageset/ProHUDMessage@3x.png differ
diff --git a/Example/Example/Assets.xcassets/ProHUDTrash.imageset/Contents.json b/Example/Example/Assets.xcassets/ProHUDTrash.imageset/Contents.json
new file mode 100644
index 0000000..f6faed5
--- /dev/null
+++ b/Example/Example/Assets.xcassets/ProHUDTrash.imageset/Contents.json
@@ -0,0 +1,22 @@
+{
+  "images" : [
+    {
+      "idiom" : "universal",
+      "scale" : "1x"
+    },
+    {
+      "idiom" : "universal",
+      "filename" : "ProHUDTrash@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "universal",
+      "filename" : "ProHUDTrash@3x.png",
+      "scale" : "3x"
+    }
+  ],
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  }
+}
\ No newline at end of file
diff --git a/Example/Example/Assets.xcassets/ProHUDTrash.imageset/ProHUDTrash@2x.png b/Example/Example/Assets.xcassets/ProHUDTrash.imageset/ProHUDTrash@2x.png
new file mode 100644
index 0000000..d136622
Binary files /dev/null and b/Example/Example/Assets.xcassets/ProHUDTrash.imageset/ProHUDTrash@2x.png differ
diff --git a/Example/Example/Assets.xcassets/ProHUDTrash.imageset/ProHUDTrash@3x.png b/Example/Example/Assets.xcassets/ProHUDTrash.imageset/ProHUDTrash@3x.png
new file mode 100644
index 0000000..d3f1cce
Binary files /dev/null and b/Example/Example/Assets.xcassets/ProHUDTrash.imageset/ProHUDTrash@3x.png differ
diff --git a/Example/Example/TestAlertVC.swift b/Example/Example/TestAlertVC.swift
index a5122ab..5fea8ff 100644
--- a/Example/Example/TestAlertVC.swift
+++ b/Example/Example/TestAlertVC.swift
@@ -18,7 +18,11 @@ class TestAlertVC: BaseListVC {
     }
     
     override var titles: [String] {
-        return ["场景：正在同步（超时）", "场景：同步成功（写法1）", "场景：同步成功（写法2）", "场景：同步失败和重试"]
+        return ["场景：正在同步（超时）",
+                "场景：同步成功（写法1）",
+                "场景：同步成功（写法2）",
+                "场景：同步失败和重试",
+                "极限场景：多个弹窗重叠"]
     }
 
     override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
@@ -28,12 +32,12 @@ class TestAlertVC: BaseListVC {
             func f() {
                 Alert.push(scene: .loading, title: "正在同步", message: "请稍等片刻") { (a) in
                     a.identifier = "loading"
-                    a.animate(rotate: true)
+                    a.rotate()
                     a.didForceQuit { [weak self] in
                         let t = Toast.push(scene: .loading, title: "正在同步", message: "请稍等片刻（点击展开为Alert）") { (vm) in
                             vm.identifier = "loading"
                         }
-                        t.animate(rotate: true)
+                        t.rotate()
                         t.didTapped { [weak t] in
                             t?.pop()
                             f()
@@ -47,7 +51,7 @@ class TestAlertVC: BaseListVC {
         } else if row == 1 {
             Alert.push() { (a) in
                 a.identifier = "loading"
-                a.animate(rotate: true)
+                a.rotate()
                 a.update { (vm) in
                     vm.scene = .loading
                     vm.title = "正在同步"
@@ -67,7 +71,7 @@ class TestAlertVC: BaseListVC {
             let a = Alert.push() { (a) in
                 a.identifier = "loading"
             }
-            a.animate(rotate: true)
+            a.rotate()
             a.update { (vm) in
                 vm.scene = .loading
                 vm.title = "正在同步"
@@ -94,7 +98,7 @@ class TestAlertVC: BaseListVC {
                         vm.message = "请稍等片刻"
                         vm.remove(action: 0, 1)
                     }
-                    a.animate(rotate: true)
+                    a.rotate()
                     DispatchQueue.main.asyncAfter(deadline: .now()+2) {
                         a.update { (vm) in
                             vm.scene = .error
@@ -109,6 +113,27 @@ class TestAlertVC: BaseListVC {
                 })
             }
             loading()
+        } else if row == 4 {
+            func f(_ i: Int) {
+                Alert.push() { (a) in
+                    a.rotate()
+                    a.update { (vm) in
+                        vm.scene = .loading
+                        vm.title = "正在同步" + String(i)
+                        vm.message = "请稍等片刻"
+                    }
+                }
+            }
+            f(1)
+            DispatchQueue.main.asyncAfter(deadline: .now() + 0.5) {
+                f(2)
+            }
+            DispatchQueue.main.asyncAfter(deadline: .now() + 1) {
+                f(3)
+            }
+            DispatchQueue.main.asyncAfter(deadline: .now() + 2) {
+                f(4)
+            }
         }
     }
 
diff --git a/Example/Example/TestGuardVC.swift b/Example/Example/TestGuardVC.swift
index d80a6fc..2156478 100644
--- a/Example/Example/TestGuardVC.swift
+++ b/Example/Example/TestGuardVC.swift
@@ -54,19 +54,27 @@ class TestGuardVC: BaseListVC {
                         vm.add(subTitle: "价格")
                         vm.add(message: "只需一次性付费$2999即可永久享用。")
                         vm.add(action: .destructive, title: "购买") { [weak vc] in
-                            Alert.push(scene: .confirm, title: "确认购买", message: "一旦购买拒不退款") { (vc) in
+                            Alert.push(scene: .buy) { (vc) in
                                 vc.identifier = "confirm"
                                 vc.update { (vm) in
                                     vm.add(action: .destructive, title: "购买") { [weak vc] in
                                         vc?.update({ (vm) in
-                                            vm.scene = .success
-                                            vm.title = "购买成功"
-                                            vm.message = "感谢您的支持"
-                                            vm.remove(action: 1)
-                                            vm.update(action: 0, style: .default, title: "我知道了") {
-                                                vc?.pop()
-                                            }
+                                            vm.scene = .loading
+                                            vm.title = "正在付款"
+                                            vm.message = "请稍等片刻"
+                                            vm.remove(action: 0, 1)
                                         })
+                                        vc?.rotate()
+                                        DispatchQueue.main.asyncAfter(deadline: .now()+1) {
+                                            vc?.update({ (vm) in
+                                                vm.scene = .success
+                                                vm.title = "购买成功"
+                                                vm.message = "感谢您的支持"
+                                                vm.add(action: .default, title: "我知道了") {
+                                                    vc?.pop()
+                                                }
+                                            })
+                                        }
                                     }
                                     vm.add(action: .cancel, title: "取消", handler: nil)
                                 }
diff --git a/Example/Example/TestToastVC.swift b/Example/Example/TestToastVC.swift
index d8abb9c..9b4cdb9 100644
--- a/Example/Example/TestToastVC.swift
+++ b/Example/Example/TestToastVC.swift
@@ -35,7 +35,7 @@ class TestToastVC: BaseListVC {
         if row == 0 {
             Toast.push(scene: .loading, title: "正在同步", message: "请稍等片刻") { (vm) in
                 vm.identifier = "loading"
-            }.animate(rotate: true)
+            }.rotate()
             simulateSync()
         } else if row == 1 {
             let t = Toast.push(scene: .success, title: "同步成功", message: "点击查看详情")
@@ -64,8 +64,8 @@ class TestToastVC: BaseListVC {
             }
         } else if row == 5 {
             Toast.push(scene: .default, title: "禁止手势移除", message: "这条消息无法通过向上滑动移出屏幕。5秒后自动消失，每次拖拽都会刷新倒计时。") { (vc) in
+                vc.isRemovable = false
                 vc.update { (vm) in
-                    vm.isRemovable = false
                     vm.duration = 5
                 }
             }
diff --git a/ProHUD/Alert/AlertConfig.swift b/ProHUD/Alert/AlertConfig.swift
index 0e056a0..a10d9a9 100644
--- a/ProHUD/Alert/AlertConfig.swift
+++ b/ProHUD/Alert/AlertConfig.swift
@@ -28,11 +28,6 @@ public extension ProHUD.Configuration {
         // MARK: 图标样式
         /// 图标尺寸
         public var iconSize = CGSize(width: 48, height: 48)
-        /// 某个场景的默认图片
-        /// - Parameter callback: 回调
-        public func iconForScene(_ callback: @escaping (ProHUD.Alert.Scene) -> UIImage?) {
-            privIconForScene = callback
-        }
         
         // MARK: 文本样式
         /// 标题字体
@@ -59,11 +54,6 @@ public extension ProHUD.Configuration {
             privReloadData = callback
         }
         
-        /// 默认持续时间（当viewmodel的duration为nil时，会从这里获取）
-        public func durationForScene(_ callback: @escaping (ProHUD.Alert.Scene) -> TimeInterval?) {
-            privDurationForScene = callback
-        }
-        
         /// 多少秒后显示强制退出的按钮（只有无按钮的弹窗才会出现）
         public var forceQuitTimer = TimeInterval(30)
         
@@ -88,10 +78,6 @@ internal extension ProHUD.Configuration.Alert {
         return privReloadData
     }
     
-    var durationForScene: (ProHUD.Alert.Scene) -> TimeInterval? {
-        return privDurationForScene
-    }
-    
 }
 
 
@@ -122,33 +108,10 @@ fileprivate var privLayoutContentView: (ProHUD.Alert) -> Void = {
     }
 }()
 
-fileprivate var privIconForScene: (ProHUD.Alert.Scene) -> UIImage? = {
-    return { (scene) in
-        let imgStr: String
-        switch scene {
-        case .success:
-            imgStr = "ProHUDSuccess"
-        case .warning:
-            imgStr = "ProHUDWarning"
-        case .error:
-            imgStr = "ProHUDError"
-        case .loading:
-            imgStr = "ProHUDLoading"
-        case .confirm:
-            imgStr = "ProHUDMessage"
-        case .delete:
-            imgStr = "ProHUDTrash"
-        default:
-            imgStr = "ProHUDMessage"
-        }
-        return ProHUD.image(named: imgStr)
-    }
-}()
-
 fileprivate var privUpdateImage: (ProHUD.Alert) -> Void = {
     return { (vc) in
         let config = cfg.alert
-        let img = vc.vm.icon ?? privIconForScene(vc.vm.scene)
+        let img = vc.vm.icon ?? vc.vm.scene.image
         if let imgv = vc.imageView {
             imgv.image = img
         } else {
@@ -172,6 +135,12 @@ fileprivate var privUpdateImage: (ProHUD.Alert) -> Void = {
 fileprivate var privUpdateTextStack: (ProHUD.Alert) -> Void = {
     return { (vc) in
         let config = cfg.alert
+        if vc.vm.title == nil {
+            vc.vm.title = vc.vm.scene.title
+        }
+        if vc.vm.message == nil {
+            vc.vm.message = vc.vm.scene.message
+        }
         if vc.vm.title?.count ?? 0 > 0 || vc.vm.message?.count ?? 0 > 0 {
             vc.contentStack.addArrangedSubview(vc.textStack)
             vc.textStack.snp.makeConstraints { (mk) in
@@ -360,15 +329,3 @@ fileprivate var privReloadData: (ProHUD.Alert) -> Void = {
         
     }
 }()
-
-
-fileprivate var privDurationForScene: (ProHUD.Alert.Scene) -> TimeInterval? = {
-    return { (scene) in
-        switch scene {
-        case .loading:
-            return nil
-        default:
-            return 2
-        }
-    }
-}()
diff --git a/ProHUD/Alert/AlertController.swift b/ProHUD/Alert/AlertController.swift
index 1eedafc..37f771b 100644
--- a/ProHUD/Alert/AlertController.swift
+++ b/ProHUD/Alert/AlertController.swift
@@ -178,7 +178,7 @@ public extension Alert {
     /// - Parameter title: 标题
     /// - Parameter message: 正文
     /// - Parameter actions: 更多操作
-    @discardableResult class func push(scene: Alert.Scene = .default, title: String? = nil, message: String? = nil, _ actions: ((Alert) -> Void)? = nil) -> Alert {
+    @discardableResult class func push(scene: ProHUD.Scene = .default, title: String? = nil, message: String? = nil, _ actions: ((Alert) -> Void)? = nil) -> Alert {
         return Alert(scene: scene, title: title, message: message, actions: actions).push()
     }
     
diff --git a/ProHUD/Alert/AlertModel.swift b/ProHUD/Alert/AlertModel.swift
index ebdc493..172c52b 100644
--- a/ProHUD/Alert/AlertModel.swift
+++ b/ProHUD/Alert/AlertModel.swift
@@ -9,34 +9,10 @@
 import UIKit
 
 public extension Alert {
-    enum Scene {
-        /// 默认场景
-        case `default`
-        
-        /// 加载中场景
-        case loading
-        
-        /// 确认场景
-        case confirm
-        
-        /// 删除场景
-        case delete
-        
-        /// 成功场景
-        case success
-        
-        /// 警告场景
-        case warning
-        
-        /// 错误场景
-        case error
-        
-    }
-    
     class ViewModel {
         
         /// 使用场景
-        public var scene = Scene.default
+        public var scene = ProHUD.Scene.default
         
         /// 标题
         public var title: String? {
@@ -81,7 +57,7 @@ public extension Alert {
         
         internal func updateDuration() {
             durationBlock?.cancel()
-            if let t = duration ?? cfg.alert.durationForScene(scene), t > 0 {
+            if let t = duration ?? scene.alertDuration, t > 0 {
                 durationBlock = DispatchWorkItem(block: { [weak self] in
                     self?.vc?.pop()
                 })
diff --git a/ProHUD/ProHUD.swift b/ProHUD/ProHUD.swift
index 0a0b605..af4c7d3 100644
--- a/ProHUD/ProHUD.swift
+++ b/ProHUD/ProHUD.swift
@@ -16,8 +16,67 @@ public class ProHUD {
         return cfg
     }
     
+    public struct Scene {
+        private var id = "unknown"
+        public var identifier: String {
+            return id
+        }
+        public var image: UIImage?
+        public var alertDuration: TimeInterval?
+        public var toastDuration: TimeInterval? = 3
+        public var title: String?
+        public var message: String?
+        init() {
+            
+        }
+    }
+    
 }
 
+// 默认场景
+public extension ProHUD.Scene {
+    init(identifier: String) {
+        self.init()
+        id = identifier
+    }
+    
+    static var `default`: ProHUD.Scene {
+        var scene = ProHUD.Scene.init(identifier: "default")
+        scene.image = ProHUD.image(named: "ProHUDMessage")
+        return scene
+    }
+    static var loading: ProHUD.Scene {
+        var scene = ProHUD.Scene.init(identifier: "loading")
+        scene.alertDuration = 0
+        scene.toastDuration = 0
+        scene.image = ProHUD.image(named: "ProHUDLoading")
+        return scene
+    }
+    static var success: ProHUD.Scene {
+        var scene = ProHUD.Scene.init(identifier: "success")
+        scene.alertDuration = 2
+        scene.image = ProHUD.image(named: "ProHUDSuccess")
+        return scene
+    }
+    static var warning: ProHUD.Scene {
+        var scene = ProHUD.Scene.init(identifier: "warning")
+        scene.alertDuration = 2
+        scene.toastDuration = 5
+        scene.image = ProHUD.image(named: "ProHUDWarning")
+        return scene
+    }
+    static var error: ProHUD.Scene {
+        var scene = ProHUD.Scene.init(identifier: "error")
+        scene.alertDuration = 2
+        scene.toastDuration = 5
+        scene.image = ProHUD.image(named: "ProHUDError")
+        return scene
+    }
+    
+    
+}
+
+
 // MARK: - Utilities
 
 internal extension ProHUD {
diff --git a/ProHUD/Toast/ToastConfig.swift b/ProHUD/Toast/ToastConfig.swift
index cc858da..da3eda0 100644
--- a/ProHUD/Toast/ToastConfig.swift
+++ b/ProHUD/Toast/ToastConfig.swift
@@ -23,11 +23,6 @@ public extension ProHUD.Configuration {
         // MARK: 图标样式
         /// 图标尺寸
         public var iconSize = CGSize(width: 48, height: 48)
-        /// 某个场景的默认图片
-        /// - Parameter callback: 回调
-        public func iconForScene(_ callback: @escaping (ProHUD.Toast.Scene) -> UIImage?) {
-            privIconForScene = callback
-        }
         
         // MARK: 文本样式
         /// 标题字体
@@ -46,10 +41,6 @@ public extension ProHUD.Configuration {
             privReloadData = callback
         }
         
-        /// 默认持续时间（当viewmodel的duration为nil时，会从这里获取）
-        public mutating func durationForScene(_ callback: @escaping (ProHUD.Toast.Scene) -> TimeInterval?) {
-            privDurationForScene = callback
-        }
         
     }
 }
@@ -62,9 +53,6 @@ internal extension ProHUD.Configuration.Toast {
         return privReloadData
     }
     
-    var durationForScene: (ProHUD.Toast.Scene) -> TimeInterval? {
-        return privDurationForScene
-    }
     
 }
 
@@ -84,12 +72,12 @@ fileprivate var privReloadData: (ProHUD.Toast) -> Void = {
             vc.view.addSubview(vc.imageView)
         }
         // 设置数据
-        vc.imageView.image = vc.vm.icon ?? privIconForScene(vc.vm.scene)
+        vc.imageView.image = vc.vm.icon ?? vc.vm.scene.image
         vc.imageView.layer.removeAllAnimations()
         vc.titleLabel.textColor = cfg.primaryLabelColor
-        vc.titleLabel.text = vc.vm.title
+        vc.titleLabel.text = vc.vm.title ?? vc.vm.scene.title
         vc.bodyLabel.textColor = cfg.secondaryLabelColor
-        vc.bodyLabel.text = vc.vm.message
+        vc.bodyLabel.text = vc.vm.message ?? vc.vm.scene.message
         
         // 更新布局
         vc.imageView.snp.makeConstraints { (mk) in
@@ -118,38 +106,3 @@ fileprivate var privReloadData: (ProHUD.Toast) -> Void = {
     }
     
 }()
-
-
-
-fileprivate var privIconForScene: (ProHUD.Toast.Scene) -> UIImage? = {
-    return { (scene) in
-        let imgStr: String
-        switch scene {
-        case .success:
-            imgStr = "ProHUDSuccess"
-        case .warning:
-            imgStr = "ProHUDWarning"
-        case .error:
-            imgStr = "ProHUDError"
-        case .loading:
-            imgStr = "ProHUDLoading"
-        default:
-            imgStr = "ProHUDMessage"
-        }
-        return ProHUD.image(named: imgStr)
-    }
-}()
-
-
-fileprivate var privDurationForScene: (ProHUD.Toast.Scene) -> TimeInterval? = {
-    return { (scene) in
-        switch scene {
-        case .loading:
-            return nil
-        case .error, .warning:
-            return 5
-        default:
-            return 3
-        }
-    }
-}()
diff --git a/ProHUD/Toast/ToastController.swift b/ProHUD/Toast/ToastController.swift
index c283383..84d3f9c 100644
--- a/ProHUD/Toast/ToastController.swift
+++ b/ProHUD/Toast/ToastController.swift
@@ -53,6 +53,9 @@ public extension ProHUD {
             return vev
         }()
         
+        /// 是否可以通过手势移除（向上滑出屏幕）
+        public var isRemovable = true
+        
         /// 视图模型
         public var vm = ViewModel()
         
@@ -215,7 +218,7 @@ public extension Toast {
     /// - Parameter title: 标题
     /// - Parameter message: 内容
     /// - Parameter actions: 更多操作
-    @discardableResult class func push(scene: Toast.Scene = .default, title: String? = nil, message: String? = nil, duration: TimeInterval? = nil, _ actions: ((Toast) -> Void)? = nil) -> Toast {
+    @discardableResult class func push(scene: ProHUD.Scene = .default, title: String? = nil, message: String? = nil, duration: TimeInterval? = nil, _ actions: ((Toast) -> Void)? = nil) -> Toast {
         return Toast(scene: scene, title: title, message: message, duration: duration, actions: actions).push()
     }
     
@@ -297,7 +300,7 @@ fileprivate extension Toast {
         window?.transform = .init(translationX: 0, y: point.y)
         if sender.state == .recognized {
             let v = sender.velocity(in: sender.view)
-            if vm.isRemovable == true && (((window?.frame.origin.y ?? 0) < 0 && v.y < 0) || v.y < -1200) {
+            if isRemovable == true && (((window?.frame.origin.y ?? 0) < 0 && v.y < 0) || v.y < -1200) {
                 // 移除
                 self.pop()
             } else {
diff --git a/ProHUD/Toast/ToastModel.swift b/ProHUD/Toast/ToastModel.swift
index e46bb33..85c9f59 100644
--- a/ProHUD/Toast/ToastModel.swift
+++ b/ProHUD/Toast/ToastModel.swift
@@ -9,28 +9,10 @@
 import UIKit
 
 public extension Toast {
-    enum Scene {
-        /// 默认场景
-        case `default`
-        
-        /// 加载中场景
-        case loading
-        
-        /// 成功场景
-        case success
-        
-        /// 警告场景
-        case warning
-        
-        /// 错误场景
-        case error
-        
-    }
-    
     class ViewModel {
         
         /// 使用场景
-        public var scene = Scene.default
+        public var scene = ProHUD.Scene.default
         
         /// 标题
         public var title: String? {
@@ -62,10 +44,6 @@ public extension Toast {
         
         public weak var vc: Toast?
         
-        /// 是否可以通过手势移除（向上滑出屏幕）
-        public var isRemovable = true
-        
-        
         // MARK: 私有
         
         /// 持续时间
@@ -76,7 +54,7 @@ public extension Toast {
         
         internal func updateDuration() {
             durationBlock?.cancel()
-            if let t = duration ?? cfg.toast.durationForScene(scene), t > 0 {
+            if let t = duration ?? scene.toastDuration, t > 0 {
                 durationBlock = DispatchWorkItem(block: { [weak self] in
                     self?.vc?.pop()
                 })
@@ -87,5 +65,4 @@ public extension Toast {
         }
         
     }
-    
 }