diff --git a/Bark/AppDelegate.swift b/Bark/AppDelegate.swift
index 6341a6c..0d2fc85 100644
--- a/Bark/AppDelegate.swift
+++ b/Bark/AppDelegate.swift
@@ -137,7 +137,7 @@ class AppDelegate: UIResponder, UIApplicationDelegate, UNUserNotificationCenterD
     }
     
     private func notificatonHandler(userInfo: [AnyHashable: Any]) {
-        let navigationController = Client.shared.currentNavigationController
+        let viewController = Client.shared.currentSnackbarController
         func presentController() {
             let alert = (userInfo["aps"] as? [String: Any])?["alert"] as? [String: Any]
             let title = alert?["title"] as? String
@@ -182,17 +182,17 @@ class AppDelegate: UIResponder, UIApplicationDelegate, UNUserNotificationCenterD
                 if let url = url {
                     items.append(url)
                 }
-                let controller = UIApplication.shared.keyWindow?.rootViewController
+                let controller = Client.shared.window?.rootViewController
                 let activityController = UIActivityViewController(activityItems: items,
                                                                   applicationActivities: nil)
                 controller?.present(activityController, animated: true, completion: nil)
             }))
             alertController.addAction(UIAlertAction(title: NSLocalizedString("Cancel"), style: .cancel, handler: nil))
 
-            navigationController?.present(alertController, animated: true, completion: nil)
+            viewController?.present(alertController, animated: true, completion: nil)
         }
 
-        if let presentedController = navigationController?.presentedViewController {
+        if let presentedController = viewController?.presentedViewController {
             presentedController.dismiss(animated: false) {
                 presentController()
             }
diff --git a/Common/Client.swift b/Common/Client.swift
index 2414069..728541f 100644
--- a/Common/Client.swift
+++ b/Common/Client.swift
@@ -17,17 +17,23 @@ class Client: NSObject {
         super.init()
     }
 
-    var currentNavigationController: UINavigationController? {
-        // TODO: iPad 取值不对
-        let controller = UIApplication.shared.delegate?.window??.rootViewController as? BarkSnackbarController
-        let nav = (controller?.rootViewController as? UITabBarController)?.selectedViewController as? UINavigationController
-        return nav
+    var window: UIWindow? {
+        return UIApplication.shared.delegate?.window ?? nil
+    }
+
+    var currentSnackbarController: BarkSnackbarController? {
+        return self.window?.rootViewController as? BarkSnackbarController
     }
 
     var currentTabBarController: StateStorageTabBarController? {
-        // TODO: iPad 取值不对
-        let controller = UIApplication.shared.delegate?.window??.rootViewController as? BarkSnackbarController
-        return controller?.rootViewController as? StateStorageTabBarController
+        guard let snackbarController = self.currentSnackbarController else {
+            return nil
+        }
+        if #available(iOS 14, *), UIDevice.current.userInterfaceIdiom == .pad {
+            return (snackbarController.rootViewController as? BarkSplitViewController)?.compactController
+        } else {
+            return snackbarController.rootViewController as? BarkTabBarController
+        }
     }
     
     let appVersion: String = {
@@ -67,7 +73,7 @@ class Client: NSObject {
             UIApplication.shared.open(url, options: [UIApplication.OpenExternalURLOptionsKey.universalLinksOnly: true]) { success in
                 if !success {
                     // 打不开Universal Link时，则用内置 safari 打开
-                    self.currentNavigationController?.present(BarkSFSafariViewController(url: url), animated: true, completion: nil)
+                    self.currentSnackbarController?.present(BarkSFSafariViewController(url: url), animated: true, completion: nil)
                 }
             }
         } else {
diff --git a/Controller/BaseViewController.swift b/Controller/BaseViewController.swift
index 74ef5a7..c007d6d 100644
--- a/Controller/BaseViewController.swift
+++ b/Controller/BaseViewController.swift
@@ -8,13 +8,12 @@
 
 import Material
 import UIKit
+
 class BaseViewController<T>: UIViewController where T: ViewModel {
     let viewModel: T
     init(viewModel: T) {
         self.viewModel = viewModel
         super.init(nibName: nil, bundle: nil)
-        
-        self.view.backgroundColor = BKColor.background.primary
     }
     
     @available(*, unavailable)
@@ -28,6 +27,8 @@ class BaseViewController<T>: UIViewController where T: ViewModel {
     
     override func viewDidLoad() {
         super.viewDidLoad()
+        self.view.backgroundColor = BKColor.background.primary
+        
         if UIDevice.current.userInterfaceIdiom == .pad {
             navigationItem.largeTitleDisplayMode = .never
         } else {
diff --git a/Controller/MessageListViewController.swift b/Controller/MessageListViewController.swift
index 91ef6ea..1f7a890 100644
--- a/Controller/MessageListViewController.swift
+++ b/Controller/MessageListViewController.swift
@@ -225,9 +225,7 @@ class MessageListViewController: BaseViewController<MessageListViewModel> {
     }
     
     private func scrollToTop() {
-        if self.tableView.visibleCells.count > 0 {
-            self.tableView.scrollToRow(at: IndexPath(row: 0, section: 0), at: .top, animated: true)
-        }
+        self.tableView.setContentOffset(CGPoint(x: 0, y: -250), animated: false)
     }
 }