diff --git a/example/lib/main.dart b/example/lib/main.dart
index 15f09c2..179c3bc 100644
--- a/example/lib/main.dart
+++ b/example/lib/main.dart
@@ -85,7 +85,7 @@ class _HomePageState extends State<HomePage> {
           supportedMethods: [AppUpgradeMethod.browser, AppUpgradeMethod.inApp, AppUpgradeMethod.market],
         );
       },
-      showNoUpdateToast: true,
+      showNoUpdateToast: false, // 禁用"已是最新版本"的提示
       autoDownload: false,
       autoInstall: true,
     );
@@ -139,7 +139,7 @@ class _HomePageState extends State<HomePage> {
                       downloadUrl: 'https://example.com/app.apk',
                     );
                   },
-                  showNoUpdateToast: true,
+                  showNoUpdateToast: false, // 禁用"已是最新版本"的提示
                   autoDownload: false,
                   autoInstall: false,
                 );
diff --git a/lib/app_upgrade_simple.dart b/lib/app_upgrade_simple.dart
index cdc905f..36d6bba 100644
--- a/lib/app_upgrade_simple.dart
+++ b/lib/app_upgrade_simple.dart
@@ -1,12 +1,12 @@
 import 'dart:async';
 import 'dart:io';
 
+import 'package:app_upgrade_plugin/core/upgrade_utils.dart';
 import 'package:flutter/material.dart';
 import 'package:url_launcher/url_launcher.dart';
 
 import 'app_upgrade_plugin_platform_interface.dart';
 import 'core/permission_helper.dart';
-import 'core/upgrade_utils.dart';
 import 'models/app_upgrade_method.dart';
 import 'models/app_upgrade_version.dart';
 import 'models/upgrade_info.dart';
@@ -217,11 +217,12 @@ class AppUpgradeSimple {
   ///   - false: 下载完成后需要用户手动触发安装（默认）
   ///   - null: 使用 [config] 或全局配置的 [UpgradeConfig.autoInstall]
   ///   - 注意：仅在 [autoDownload] 为 true 时生效
-  /// - [onComplete] (可选) 完成回调函数
+  /// - [onComplete] (可选) 完成回调函数，接收一个 bool 参数表示是否更新成功
+  ///   - true: 更新成功或已是最新版本
+  ///   - false: 用户取消更新或更新失败
   ///   - 在以下情况会被调用：
   ///     - 检查完成（无论是否有更新）
-  ///     - 检查失败
-  ///     - 用户关闭升级对话框
+  ///     - 用户完成更新或关闭升级对话框
   /// - [config] (可选) 升级配置对象 [UpgradeConfig]
   ///   - 如果提供，会覆盖全局配置和单个参数设置
   ///   - 如果为 null，使用全局配置 [UpgradeConfig]
@@ -239,8 +240,8 @@ class AppUpgradeSimple {
   ///   showNoUpdateToast: true,
   ///   autoDownload: false,
   ///   autoInstall: false,
-  ///   onComplete: () {
-  ///     print('检查更新完成');
+  ///   onComplete: (success) {
+  ///     print('检查更新完成，结果: $success');
   ///   },
   /// );
   /// ```
@@ -256,7 +257,7 @@ class AppUpgradeSimple {
     bool? showNoUpdateToast,
     bool? autoDownload,
     bool? autoInstall,
-    VoidCallback? onComplete,
+    BoolCallback? onComplete,
     UpgradeConfig? config,
   }) async {
     // 使用传入的配置或默认配置
@@ -270,11 +271,11 @@ class AppUpgradeSimple {
       // 1. 获取服务器版本信息
       final serverInfo = await future();
       if (serverInfo == null) {
-        // 获取失败或无数据，视作无更新
+        // 获取失败或无数据，视作无更新（已是最新）
         if (effectiveConfig.enableDebugLog) {
           debugPrint('🔍 检查更新结果: 未返回版本信息');
         }
-        onComplete?.call();
+        onComplete?.call(true);
         return;
       }
 
@@ -336,7 +337,7 @@ class AppUpgradeSimple {
         if (finalShowNoUpdateToast && context.mounted) {
           _showToast('已是最新版本', context, effectiveConfig);
         }
-        onComplete?.call();
+        onComplete?.call(true);
         return;
       }
 
@@ -354,7 +355,7 @@ class AppUpgradeSimple {
       if (context.mounted) {
         _showToast('检查更新遇到问题', context, effectiveConfig);
       }
-      onComplete?.call();
+      onComplete?.call(true);
     }
   }
 
@@ -490,7 +491,7 @@ class AppUpgradeSimple {
     required UpgradeInfo info,
     required bool autoDownload,
     required bool autoInstall,
-    VoidCallback? onComplete,
+    BoolCallback? onComplete,
     UpgradeConfig? config,
   }) {
     final effectiveConfig = config ?? _config;
@@ -639,7 +640,7 @@ mixin _UpgradeDialogLogic<T extends StatefulWidget> on State<T> {
 
   UpgradeInfo get info;
   void Function(String) get showToast;
-  VoidCallback? get onComplete;
+  BoolCallback? get onComplete;
   bool get autoDownload;
   bool get autoInstall;
   UpgradeConfig get config;
@@ -904,7 +905,7 @@ mixin _UpgradeDialogLogic<T extends StatefulWidget> on State<T> {
       if (mounted && Navigator.canPop(context)) {
         Navigator.of(context).pop();
       }
-      onComplete?.call();
+      onComplete?.call(true);
     });
   }
 
@@ -1027,24 +1028,20 @@ mixin _UpgradeDialogLogic<T extends StatefulWidget> on State<T> {
                   colorScheme: colorScheme,
                 ),
               ),
-            ],
-          ),
-          if (info.apkSize != null) ...[
-            const SizedBox(height: 8),
-            Row(
-              children: [
+              if (info.apkSize != null) ...[
+                const SizedBox(width: 8),
                 Expanded(
                   child: _buildInfoChip(
                     context,
                     icon: Icons.file_download,
-                    label: '大小',
+                    label: '新版体积',
                     value: formatBytes(info.apkSize!),
                     colorScheme: colorScheme,
                   ),
                 ),
               ],
-            ),
-          ],
+            ],
+          ),
         ],
       ),
     );
@@ -1058,7 +1055,7 @@ mixin _UpgradeDialogLogic<T extends StatefulWidget> on State<T> {
     required ColorScheme colorScheme,
   }) {
     return Container(
-      padding: const EdgeInsets.all(8),
+      padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 6),
       decoration: BoxDecoration(
         color: colorScheme.surface,
         borderRadius: BorderRadius.circular(8),
@@ -1087,7 +1084,7 @@ mixin _UpgradeDialogLogic<T extends StatefulWidget> on State<T> {
               ),
             ],
           ),
-          const SizedBox(height: 2),
+          const SizedBox(height: 4),
           Text(
             value,
             style: TextStyle(
@@ -1127,10 +1124,10 @@ mixin _UpgradeDialogLogic<T extends StatefulWidget> on State<T> {
             ),
           ],
         ),
-        const SizedBox(height: 12),
+        const SizedBox(height: 6),
         Container(
           width: double.infinity,
-          constraints: const BoxConstraints(maxHeight: 200),
+          constraints: const BoxConstraints(maxHeight: 300),
           padding: const EdgeInsets.all(12),
           decoration: BoxDecoration(
             color: colorScheme.surfaceContainerHighest.withOpacity(0.3),
@@ -1657,7 +1654,7 @@ mixin _UpgradeDialogLogic<T extends StatefulWidget> on State<T> {
     if (info.appStoreUrl != null) {
       _plugin.goToAppStore(info.appStoreUrl!, context: context);
       // 移除关闭弹窗代码，始终不关闭
-      onComplete?.call();
+      onComplete?.call(true);
     } else {
       showToast('App Store URL is not available.');
     }
@@ -1731,7 +1728,7 @@ mixin _UpgradeDialogLogic<T extends StatefulWidget> on State<T> {
   Future<void> _handleMarketAction() async {
     if (!mounted) return;
     await _performMarketAction();
-    onComplete?.call();
+    onComplete?.call(true);
     // 移除关闭弹窗代码
   }
 
@@ -1768,15 +1765,22 @@ mixin _UpgradeDialogLogic<T extends StatefulWidget> on State<T> {
                   child: Stack(
                     alignment: Alignment.center,
                     children: [
-                      const Text('选择更新方式', style: TextStyle(fontSize: 18, fontWeight: FontWeight.bold)),
-                      if (!info.isForceUpdate)
-                        Positioned(
-                          right: -12,
-                          child: IconButton(
-                            icon: const Icon(Icons.close),
-                            onPressed: () => Navigator.of(ctx).pop(),
-                          ),
+                      Row(
+                        mainAxisAlignment: MainAxisAlignment.center,
+                        children: [
+                          Expanded(
+                              child: Text('选择更新方式',
+                                  textAlign: TextAlign.center,
+                                  style: TextStyle(fontSize: 18, fontWeight: FontWeight.bold))),
+                        ],
+                      ),
+                      Positioned(
+                        right: -12,
+                        child: IconButton(
+                          icon: const Icon(Icons.close),
+                          onPressed: () => Navigator.of(ctx).pop(),
                         ),
+                      ),
                     ],
                   ),
                 ),
@@ -1802,25 +1806,24 @@ mixin _UpgradeDialogLogic<T extends StatefulWidget> on State<T> {
                     onTap: () => Navigator.of(ctx).pop(AppUpgradeMethod.browser),
                   ),
                 const Divider(height: 24),
-                if (!info.isForceUpdate)
-                  SizedBox(
-                    width: double.infinity,
-                    child: ElevatedButton(
-                      style: ElevatedButton.styleFrom(
-                        padding: const EdgeInsets.symmetric(vertical: 12),
-                        backgroundColor: Colors.white,
-                        foregroundColor: Theme.of(context).textTheme.bodyLarge?.color,
-                        elevation: 2,
-                        shadowColor: Colors.grey.withOpacity(0.5),
-                        shape: RoundedRectangleBorder(
-                          borderRadius: BorderRadius.circular(12),
-                          side: BorderSide(color: Colors.grey.shade300),
-                        ),
+                SizedBox(
+                  width: double.infinity,
+                  child: ElevatedButton(
+                    style: ElevatedButton.styleFrom(
+                      padding: const EdgeInsets.symmetric(vertical: 12),
+                      backgroundColor: Colors.white,
+                      foregroundColor: Theme.of(context).textTheme.bodyLarge?.color,
+                      elevation: 2,
+                      shadowColor: Colors.grey.withOpacity(0.5),
+                      shape: RoundedRectangleBorder(
+                        borderRadius: BorderRadius.circular(12),
+                        side: BorderSide(color: Colors.grey.shade300),
                       ),
-                      onPressed: () => Navigator.of(ctx).pop(),
-                      child: const Text('取消', style: TextStyle(fontSize: 16, fontWeight: FontWeight.w500)),
                     ),
+                    onPressed: () => Navigator.of(ctx).pop(),
+                    child: const Text('取消', style: TextStyle(fontSize: 16, fontWeight: FontWeight.w500)),
                   ),
+                ),
               ],
             ),
           ),
@@ -1831,7 +1834,7 @@ mixin _UpgradeDialogLogic<T extends StatefulWidget> on State<T> {
     // 不再关闭弹窗，即使用户选择了更新方式
     if (choice == AppUpgradeMethod.market) {
       await _performMarketAction();
-      onComplete?.call();
+      onComplete?.call(true);
       return;
     }
 
@@ -1850,7 +1853,7 @@ class _SimpleUpgradeDialog extends StatefulWidget {
   final UpgradeInfo info;
   final bool autoDownload;
   final bool autoInstall;
-  final VoidCallback? onComplete;
+  final BoolCallback? onComplete;
   final void Function(String) showToast;
   final UpgradeConfig config;
 
@@ -1873,7 +1876,7 @@ class _SimpleUpgradeDialogState extends State<_SimpleUpgradeDialog> with _Upgrad
   @override
   void Function(String) get showToast => widget.showToast;
   @override
-  VoidCallback? get onComplete => widget.onComplete;
+  BoolCallback? get onComplete => widget.onComplete;
   @override
   bool get autoDownload => widget.autoDownload;
   @override
@@ -1962,7 +1965,7 @@ class _SimpleUpgradeDialogState extends State<_SimpleUpgradeDialog> with _Upgrad
                     TextButton(
                       onPressed: () {
                         Navigator.of(context).pop();
-                        widget.onComplete?.call();
+                        widget.onComplete?.call(false);
                       },
                       child: const Text('稍后更新'),
                     ),
@@ -2001,7 +2004,7 @@ class _ForceUpgradeDialogState extends State<_ForceUpgradeDialog> with _UpgradeD
   void Function(String) get showToast =>
       (message) => AppUpgradeSimple.instance._showToast(message, context, widget.config);
   @override
-  VoidCallback? get onComplete => null;
+  BoolCallback? get onComplete => null;
   @override
   bool get autoDownload => false;
   @override
@@ -2040,7 +2043,7 @@ class _ForceUpgradeDialogState extends State<_ForceUpgradeDialog> with _UpgradeD
         child: Container(
           width: 320,
           constraints: const BoxConstraints(
-            maxHeight: 600,
+            maxHeight: 700,
           ),
           child: Column(
             mainAxisSize: MainAxisSize.min,
@@ -2168,3 +2171,5 @@ class _ToastWidget extends StatelessWidget {
     );
   }
 }
+
+typedef BoolCallback = void Function(bool success);