feat: 修复MainView Tab切换问题并优化MeView逻辑

- 新增MainView Tab切换问题分析文档，详细描述问题原因及解决方案。 - 优化BottomTabView的绑定逻辑，简化状态管理，确保Tab切换时状态正确更新。 - 在MeView中实现用户信息加载逻辑调整，确保动态列表仅在首次进入时加载，并添加错误处理视图。 - 创建EmptyStateView组件，提供统一的空状态展示和重试功能。 - 增强调试信息输出，便于后续问题排查和用户体验提升。
2025-08-05 15:51:07 +08:00
parent 99a53d7274
commit 4ff92c8c4d
16 changed files with 481 additions and 322 deletions
--- a/Tab切换问题修复.md
+++ b/Tab切换问题修复.md
@@ -0,0 +1,82 @@
+# MainView Tab切换问题修复
+
+## 问题描述
+
+点击me tab时，页面没有切换到MeView，而是停留在FeedListView并显示"no moments yet"，但触发了2次MeFeature onAppear事件。
+
+## 问题分析
+
+### 1. 根本原因：MainFeature被重新初始化
+从debug日志发现：
+```
+📱 MainContentView selectedTab: other
+🏗️ MainFeature 初始化  ← MainFeature被重新创建！
+📱 MainContentView selectedTab: feed
+```
+
+**问题**：AppRootView中每次渲染都重新创建MainFeature的store，导致状态丢失。
+
+### 2. Tab枚举不匹配问题
+- **MainFeature.Tab**: `feed(0), other(1)`
+- **BottomTabView.Tab**: `feed(0), me(1)`
+
+虽然rawValue相同，但类型不同，导致类型转换问题。
+
+### 3. MainView中的绑定逻辑问题
+```swift
+// 原来的错误代码
+BottomTabView(selectedTab: Binding(
+    get: { Tab(rawValue: store.selectedTab.rawValue) ?? .feed }, // Tab类型不匹配
+    set: { newTab in
+        store.send(.selectTab(MainFeature.Tab(rawValue: newTab.rawValue) ?? .feed))
+    }
+))
+```
+
+### 4. MainContentView缺少状态追踪
+MainContentView没有使用`WithPerceptionTracking`，可能导致状态更新时视图不刷新。
+
+## 解决方案
+
+### 1. 简化BottomTabView绑定逻辑
+- 添加详细的调试信息追踪Tab转换过程
+- 避免复杂的switch语句，使用三元运算符
+- 确保绑定逻辑的清晰性和可追踪性
+
+### 2. 优化MainFeature的selectTab处理
+- 添加重复设置检查，避免重复状态变化
+- 增加详细的调试信息
+- 确保状态变化的唯一性
+
+### 3. 添加状态一致性检查
+- 在MainView加载时检查selectedTab状态
+- 在MainContentView中验证状态一致性
+- 添加详细的调试信息追踪状态变化
+
+### 4. 优化AppRootView的store管理
+- 修复store创建和缓存的逻辑
+- 确保store的稳定性
+- 添加store生命周期调试信息
+
+### 5. 添加全面的调试信息
+- BottomTabView的get/set操作追踪
+- MainFeature的selectTab处理追踪
+- MainView和MainContentView的状态检查
+- AppRootView的store管理追踪
+
+## 修复状态
+
+- ✅ 简化BottomTabView绑定逻辑
+- ✅ 优化MainFeature的selectTab处理
+- ✅ 添加状态一致性检查
+- ✅ 优化AppRootView的store管理
+- ✅ 添加全面的调试信息
+- ✅ 更新问题分析文档
+
+## 测试要点
+
+1. 点击feed tab时正确显示FeedListView
+2. 点击me tab时正确显示MeView
+3. Tab切换时状态正确更新
+4. 调试信息正确输出
+5. 不再出现重复的onAppear事件 
--- a/issues/MeView逻辑调整.md
+++ b/issues/MeView逻辑调整.md
@@ -0,0 +1,53 @@
+# MeView逻辑调整计划
+
+## 需求分析
+
+1. **用户信息获取逻辑**：每次显示都重新获取用户信息
+2. **动态列表获取逻辑**：只在首次进入时获取动态列表
+3. **错误处理逻辑**：动态列表API失败时显示错误视图组件
+4. **下拉刷新**：用户可以下拉刷新获取最新数据
+
+## 实现方案
+
+### 1. 创建EmptyStateView组件
+- 位置：`Views/Components/EmptyStateView.swift`
+- 功能：显示"暂无数据"文案和"重试"按钮
+- 高度：100，与列表视图对齐
+- 接受重试回调函数
+
+### 2. 修改MeFeature.State
+- 添加 `isUserInfoFirstLoad: Bool = true`
+- 添加 `showErrorView: Bool = false`
+- 添加 `momentsFirstLoadFailed: Bool = false`
+
+### 3. 修改MeFeature.Action
+- 添加 `loadUserInfo`：专门用于获取用户信息
+- 添加 `retryMoments`：用于重试动态列表加载
+
+### 4. 修改MeFeature.reducer逻辑
+- `onAppear`：每次显示都获取用户信息，只在首次进入时获取动态列表
+- `refresh`：同时获取用户信息和动态列表（下拉刷新）
+- `retryMoments`：重新加载动态列表第一页
+- `momentsResponse`：处理错误状态，第一页失败时显示错误视图
+
+### 5. 修改MeView
+- 根据 `showErrorView` 状态显示错误视图或动态列表
+- 保持下拉刷新功能
+- 添加调试信息
+
+## 实现状态
+
+- ✅ 创建EmptyStateView组件
+- ✅ 修改MeFeature.State
+- ✅ 修改MeFeature.Action
+- ✅ 修改MeFeature.reducer逻辑
+- ✅ 修改MeView显示逻辑
+
+## 测试要点
+
+1. 每次进入页面都获取最新用户信息
+2. 动态列表只在首次进入时加载
+3. 动态列表API失败时显示错误视图
+4. 点击重试按钮重新加载动态列表
+5. 下拉刷新功能正常工作
+6. 用户信息加载失败时的错误处理 
--- a/yana.xcodeproj/project.pbxproj
+++ b/yana.xcodeproj/project.pbxproj
@@ -50,8 +50,6 @@
 /* Begin PBXFileSystemSynchronizedRootGroup section */
 		4C4C8FBE2DE5AF9200384527 /* yanaAPITests */ = {
 			isa = PBXFileSystemSynchronizedRootGroup;
-			exceptions = (
-			);
 			path = yanaAPITests;
 			sourceTree = "<group>";
 		};
@@ -258,10 +256,14 @@
 			inputFileListPaths = (
 				"${PODS_ROOT}/Target Support Files/Pods-yana/Pods-yana-resources-${CONFIGURATION}-input-files.xcfilelist",
 			);
+			inputPaths = (
+			);
 			name = "[CP] Copy Pods Resources";
 			outputFileListPaths = (
 				"${PODS_ROOT}/Target Support Files/Pods-yana/Pods-yana-resources-${CONFIGURATION}-output-files.xcfilelist",
 			);
+			outputPaths = (
+			);
 			runOnlyForDeploymentPostprocessing = 0;
 			shellPath = /bin/sh;
 			shellScript = "\"${PODS_ROOT}/Target Support Files/Pods-yana/Pods-yana-resources.sh\"\n";
@@ -275,10 +277,14 @@
 			inputFileListPaths = (
 				"${PODS_ROOT}/Target Support Files/Pods-yana/Pods-yana-frameworks-${CONFIGURATION}-input-files.xcfilelist",
 			);
+			inputPaths = (
+			);
 			name = "[CP] Embed Pods Frameworks";
 			outputFileListPaths = (
 				"${PODS_ROOT}/Target Support Files/Pods-yana/Pods-yana-frameworks-${CONFIGURATION}-output-files.xcfilelist",
 			);
+			outputPaths = (
+			);
 			runOnlyForDeploymentPostprocessing = 0;
 			shellPath = /bin/sh;
 			shellScript = "\"${PODS_ROOT}/Target Support Files/Pods-yana/Pods-yana-frameworks.sh\"\n";
--- a/yana.xcodeproj/project.xcworkspace/xcshareddata/swiftpm/Package.resolved
+++ b/yana.xcodeproj/project.xcworkspace/xcshareddata/swiftpm/Package.resolved
@@ -42,8 +42,8 @@
      "kind" : "remoteSourceControl",
      "location" : "https://github.com/apple/swift-collections",
      "state" : {
-        "revision" : "c1805596154bb3a265fd91b8ac0c4433b4348fb0",
-        "version" : "1.2.0"
+        "revision" : "8c0c0a8b49e080e54e5e328cc552821ff07cd341",
+        "version" : "1.2.1"
      }
    },
    {
@@ -51,8 +51,8 @@
      "kind" : "remoteSourceControl",
      "location" : "https://github.com/pointfreeco/swift-composable-architecture",
      "state" : {
-        "revision" : "6574de2396319a58e86e2178577268cb4aeccc30",
-        "version" : "1.20.2"
+        "revision" : "4c47829a080789cf20d82c64d8c27291352391d4",
+        "version" : "1.21.1"
      }
    },
    {
@@ -78,8 +78,8 @@
      "kind" : "remoteSourceControl",
      "location" : "https://github.com/pointfreeco/swift-dependencies",
      "state" : {
-        "revision" : "4c90d6b2b9bf0911af87b103bb40f41771891596",
-        "version" : "1.9.2"
+        "revision" : "eefcdaa88d2e2fd82e3405dfb6eb45872011a0b5",
+        "version" : "1.9.3"
      }
    },
    {
@@ -96,8 +96,8 @@
      "kind" : "remoteSourceControl",
      "location" : "https://github.com/pointfreeco/swift-navigation",
      "state" : {
-        "revision" : "db6bc9dbfed001f21e6728fd36413d9342c235b4",
-        "version" : "2.3.0"
+        "revision" : "4e89284c1966538109dc783497405bc680e9bc96",
+        "version" : "2.4.0"
      }
    },
    {
@@ -105,8 +105,8 @@
      "kind" : "remoteSourceControl",
      "location" : "https://github.com/pointfreeco/swift-perception",
      "state" : {
-        "revision" : "d924c62a70fca5f43872f286dbd7cef0957f1c01",
-        "version" : "1.6.0"
+        "revision" : "328a0b49e2690135c4c2660661f0ed83f16853e3",
+        "version" : "2.0.4"
      }
    },
    {
@@ -114,8 +114,8 @@
      "kind" : "remoteSourceControl",
      "location" : "https://github.com/pointfreeco/swift-sharing",
      "state" : {
-        "revision" : "75e846ee3159dc75b3a29bfc24b6ce5a557ddca9",
-        "version" : "2.5.2"
+        "revision" : "5d87dda90ed048f216826efbad404110141161bb",
+        "version" : "2.6.0"
      }
    },
    {
@@ -132,8 +132,8 @@
      "kind" : "remoteSourceControl",
      "location" : "https://github.com/pointfreeco/xctest-dynamic-overlay",
      "state" : {
-        "revision" : "39de59b2d47f7ef3ca88a039dff3084688fe27f4",
-        "version" : "1.5.2"
+        "revision" : "23e3442166b5122f73f9e3e622cd1e4bafeab3b7",
+        "version" : "1.6.0"
      }
    }
  ],
--- a/yana/Features/ConfigView.swift
+++ b/yana/Features/ConfigView.swift
@@ -21,7 +21,7 @@ struct ConfigView: View {
                    } else if let configData = store.configData {
                        ConfigDataView(configData: configData, lastUpdated: store.lastUpdated)
                    } else {
-                        EmptyStateView()
+//                        EmptyStateView()
                    }
                }
                
@@ -161,20 +161,20 @@ struct SettingsSection: View {
 }

 // MARK: - Empty State View
-struct EmptyStateView: View {
-    var body: some View {
-        VStack(spacing: 16) {
-            Image(systemName: "arrow.down.circle")
-                .font(.system(size: 40))
-                .foregroundColor(.blue)
-            Text(LocalizedString("config.click_to_load", comment: ""))
-                .font(.body)
-                .multilineTextAlignment(.center)
-                .foregroundColor(.secondary)
-        }
-        .frame(maxHeight: .infinity)
-    }
-}
+//struct EmptyStateView: View {
+//    var body: some View {
+//        VStack(spacing: 16) {
+//            Image(systemName: "arrow.down.circle")
+//                .font(.system(size: 40))
+//                .foregroundColor(.blue)
+//            Text(LocalizedString("config.click_to_load", comment: ""))
+//                .font(.body)
+//                .multilineTextAlignment(.center)
+//                .foregroundColor(.secondary)
+//        }
+//        .frame(maxHeight: .infinity)
+//    }
+//}

 // MARK: - Action Buttons View
 struct ActionButtonsView: View {
@@ -229,10 +229,10 @@ struct InfoRow: View {
 }

 // MARK: - Preview
-#Preview {
-    ConfigView(
-        store: Store(initialState: ConfigFeature.State()) {
-            ConfigFeature()
-        }
-    )
-} 
+//#Preview {
+//    ConfigView(
+//        store: Store(initialState: ConfigFeature.State()) {
+//            ConfigFeature()
+//        }
+//    )
+//} 
--- a/yana/Features/FeedListFeature.swift
+++ b/yana/Features/FeedListFeature.swift
@@ -50,6 +50,7 @@ struct FeedListFeature {
        // 新增：CreateFeed发布成功通知
        case createFeedPublishSuccess
        // 预留后续 Action
+        case checkAuthAndLoad
    }
    
    func reduce(into state: inout State, action: Action) -> Effect<Action> {
@@ -57,7 +58,35 @@ struct FeedListFeature {
        case .onAppear:
            guard state.isFirstLoad else { return .none }
            state.isFirstLoad = false
-            return .send(.fetchFeeds)
+            debugInfoSync("📱 FeedListFeature onAppear")
+            // 直接触发认证检查和数据加载
+            return .send(.checkAuthAndLoad)
+            
+        case .checkAuthAndLoad:
+            // 新增：认证检查和数据加载
+            return .run { send in
+                // 检查认证信息是否已保存
+                let accountModel = await UserInfoManager.getAccountModel()
+                if accountModel?.uid != nil {
+                    debugInfoSync("✅ FeedListFeature: 认证信息已准备好，开始获取动态")
+                    await send(.fetchFeeds)
+                } else {
+                    debugInfoSync("⏳ FeedListFeature: 认证信息未准备好，等待...")
+                    // 增加等待时间和重试次数
+                    for attempt in 1...3 {
+                        try? await Task.sleep(nanoseconds: 500_000_000) // 0.5秒
+                        let retryAccountModel = await UserInfoManager.getAccountModel()
+                        if retryAccountModel?.uid != nil {
+                            debugInfoSync("✅ FeedListFeature: 第\(attempt)次重试成功，认证信息已保存，开始获取动态")
+                            await send(.fetchFeeds)
+                            return
+                        } else {
+                            debugInfoSync("⏳ FeedListFeature: 第\(attempt)次重试，认证信息仍未准备好")
+                        }
+                    }
+                    debugInfoSync("❌ FeedListFeature: 多次重试后认证信息仍未准备好")
+                }
+            }
        case .reload:
            // 下拉刷新，重置状态并请求第一页
            state.isLoading = true
--- a/yana/Features/MainFeature.swift
+++ b/yana/Features/MainFeature.swift
@@ -26,6 +26,19 @@ struct MainFeature {
            debugInfoSync("🏗️ MainFeature 初始化")
            debugInfoSync("   accountModel.uid: \(accountModel?.uid ?? "nil")")
            debugInfoSync("   转换后的uid: \(uid)")
+            
+            // 如果没有传入accountModel，尝试从Keychain获取
+            if accountModel == nil {
+                debugInfoSync("   🔍 尝试从Keychain获取AccountModel")
+                Task {
+                    if let savedAccountModel = await UserInfoManager.getAccountModel() {
+                        debugInfoSync("   ✅ 从Keychain获取到AccountModel: \(savedAccountModel.uid ?? "nil")")
+                    } else {
+                        debugInfoSync("   ⚠️ 从Keychain未获取到AccountModel")
+                    }
+                }
+            }
+            
            var meState = MeFeature.State(displayUID: uid > 0 ? uid : nil)
            if uid > 0 {
                meState.uid = uid // 确保uid与displayUID一致
@@ -73,15 +86,34 @@ struct MainFeature {
                    await send(.accountModelLoaded(accountModel))
                }
            case .selectTab(let tab):
+                debugInfoSync("🎯 MainFeature selectTab: \(tab)")
+                debugInfoSync("   当前selectedTab: \(state.selectedTab)")
+                debugInfoSync("   新selectedTab: \(tab)")
+                
+                // 避免重复设置相同的tab
+                guard state.selectedTab != tab else {
+                    debugInfoSync("   ⚠️ 重复设置相同tab，忽略")
+                    return .none
+                }
+                
                state.selectedTab = tab
                state.navigationPath = []
-                if tab == .other, let uidStr = state.accountModel?.uid, let uid = Int(uidStr), uid > 0 {
-                    if state.me.displayUID != uid {
-                        state.me.displayUID = uid
-                        state.me.uid = uid // 同步更新uid
-                        state.me.isFirstLoad = true
+                debugInfoSync("   ✅ selectedTab已更新为: \(state.selectedTab)")
+                
+                // 切换到MeView时，确保有有效的uid并触发数据加载
+                if tab == .other {
+                    if let uidStr = state.accountModel?.uid, let uid = Int(uidStr), uid > 0 {
+                        if state.me.displayUID != uid {
+                            state.me.displayUID = uid
+                            state.me.uid = uid // 同步更新uid
+                            state.me.isFirstLoad = true
+                            debugInfoSync("   🔄 更新MeFeature状态，uid: \(uid)")
+                        }
+                        debugInfoSync("   📱 切换到MeView，触发数据加载")
+                        return .send(.me(.onAppear))
+                    } else {
+                        debugInfoSync("   ⚠️ 切换到MeView但uid无效，等待AccountModel加载")
                    }
-                    return .send(.me(.onAppear))
                }
                return .none
            case .feedList(.testButtonTapped):
@@ -97,14 +129,31 @@ struct MainFeature {
                return .none
            case let .accountModelLoaded(accountModel):
                state.accountModel = accountModel
-                // 如果当前选中的是 MeView 标签页，且有有效的 uid，则触发数据加载
-                if state.selectedTab == .other, let uidStr = accountModel?.uid, let uid = Int(uidStr), uid > 0 {
+                debugInfoSync("📦 MainFeature: AccountModel已加载")
+                debugInfoSync("   uid: \(accountModel?.uid ?? "nil")")
+                
+                // 更新MeFeature状态
+                if let uidStr = accountModel?.uid, let uid = Int(uidStr), uid > 0 {
                    if state.me.displayUID != uid {
                        state.me.displayUID = uid
                        state.me.uid = uid // 同步更新uid
                        state.me.isFirstLoad = true
+                        debugInfoSync("   🔄 更新MeFeature状态，uid: \(uid)")
                    }
-                    return .send(.me(.onAppear))
+                    
+                    // 如果当前选中的是 MeView 标签页，则触发数据加载
+                    if state.selectedTab == .other {
+                        debugInfoSync("   📱 当前在MeView，触发数据加载")
+                        return .send(.me(.onAppear))
+                    }
+                    
+                    // 如果当前选中的是 FeedView 标签页，则触发数据加载
+                    if state.selectedTab == .feed {
+                        debugInfoSync("   📱 当前在FeedView，触发数据加载")
+                        return .send(.feedList(.checkAuthAndLoad))
+                    }
+                } else {
+                    debugInfoSync("   ⚠️ AccountModel中uid无效")
                }
                return .none
            case .me(.settingButtonTapped):
--- a/yana/Features/MeFeature.swift
+++ b/yana/Features/MeFeature.swift
@@ -7,6 +7,7 @@ struct MeFeature {
    @ObservableState
    struct State: Equatable {
        var isFirstLoad: Bool = true
+        var isUserInfoFirstLoad: Bool = true
        var userInfo: UserInfo?
        var isLoadingUserInfo: Bool = false
        var userInfoError: String?
@@ -24,6 +25,9 @@ struct MeFeature {
        // 新增：DetailView相关状态
        var showDetail: Bool = false
        var selectedMoment: MomentsInfo?
+        // 新增：错误视图相关状态
+        var showErrorView: Bool = false
+        var momentsFirstLoadFailed: Bool = false
        
        init(displayUID: Int? = nil) {
            self.displayUID = displayUID
@@ -48,6 +52,8 @@ struct MeFeature {
        case onAppear
        case refresh
        case loadMore
+        case loadUserInfo
+        case retryMoments
        case userInfoResponse(Result<UserInfo, APIError>)
        case momentsResponse(Result<MyMomentsResponse, APIError>)
        // 设置按钮点击
@@ -60,25 +66,54 @@ struct MeFeature {
    func reduce(into state: inout State, action: Action) -> Effect<Action> {
        switch action {
        case .onAppear:
-            guard state.isFirstLoad else { return .none }
-            debugInfoSync("📱 MeFeature onAppear")
+            debugInfoSync("\n📱 MeFeature onAppear")
            debugInfoSync("   isFirstLoad: \(state.isFirstLoad)")
+            debugInfoSync("   isUserInfoFirstLoad: \(state.isUserInfoFirstLoad)")
            debugInfoSync("   effectiveUID: \(state.effectiveUID)")
-            state.isFirstLoad = false
-            return .send(.refresh)
+            
+            // 每次显示都获取用户信息
+            let userInfoEffect = fetchUserInfo(uid: state.effectiveUID)
+            
+            // 只在首次进入时获取动态列表
+            if state.isFirstLoad {
+                state.isFirstLoad = false
+                return .merge(
+                    userInfoEffect,
+                    fetchMoments(uid: state.effectiveUID, page: 1, pageSize: state.pageSize)
+                )
+            } else {
+                return userInfoEffect
+            }
        case .refresh:
            guard state.effectiveUID > 0 else { return .none }
-            debugInfoSync("🔄 MeFeature refresh")
+            debugInfoSync("\n🔄 MeFeature refresh")
            debugInfoSync("   effectiveUID: \(state.effectiveUID)")
            state.isRefreshing = true
            state.page = 1
            state.hasMore = true
            state.userInfoError = nil  // 重置错误状态
            state.momentsError = nil   // 重置错误状态
+            state.showErrorView = false // 隐藏错误视图
            return .merge(
                fetchUserInfo(uid: state.effectiveUID),
                fetchMoments(uid: state.effectiveUID, page: 1, pageSize: state.pageSize)
            )
+        case .loadUserInfo:
+            guard state.effectiveUID > 0 else { return .none }
+            debugInfoSync("\n👤 MeFeature loadUserInfo")
+            debugInfoSync("   effectiveUID: \(state.effectiveUID)")
+            return fetchUserInfo(uid: state.effectiveUID)
+        case .retryMoments:
+            guard state.effectiveUID > 0 else { return .none }
+            debugInfoSync("\n🔄 MeFeature retryMoments")
+            debugInfoSync("   effectiveUID: \(state.effectiveUID)")
+            state.showErrorView = false // 隐藏错误视图
+            state.momentsFirstLoadFailed = false
+            state.isLoadingMoments = true
+            state.page = 1
+            state.hasMore = true
+            state.momentsError = nil
+            return fetchMoments(uid: state.effectiveUID, page: 1, pageSize: state.pageSize)
        case .loadMore:
            guard state.effectiveUID > 0, state.hasMore, !state.isLoadingMore else { return .none }
            state.isLoadingMore = true
@@ -151,6 +186,8 @@ struct MeFeature {
                state.hasMore = newMoments.count == state.pageSize
                if state.hasMore { state.page += 1 }
                state.momentsError = nil
+                state.showErrorView = false // 隐藏错误视图
+                state.momentsFirstLoadFailed = false
                
                debugInfoSync("✅ 我的动态加载成功")
                debugInfoSync("   加载数量: \(newMoments.count)")
@@ -158,6 +195,11 @@ struct MeFeature {
                debugInfoSync("   是否有更多: \(state.hasMore)")
            case let .failure(error):
                state.momentsError = error.localizedDescription
+                // 如果是第一页加载失败，显示错误视图
+                if state.page == 1 {
+                    state.showErrorView = true
+                    state.momentsFirstLoadFailed = true
+                }
                debugErrorSync("❌ 我的动态加载失败: \(error.localizedDescription)")
            }
            return .none
--- a/yana/LaunchScreen.storyboard
+++ b/yana/LaunchScreen.storyboard
@@ -1,63 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="23727" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" useSafeAreas="YES" colorMatched="YES">
-    <device id="retina6_12" orientation="portrait" appearance="light"/>
-    <dependencies>
-        <deployment identifier="iOS"/>
-        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="23721"/>
-        <capability name="Safe area layout guides" minToolsVersion="9.0"/>
-        <capability name="System colors in document resources" minToolsVersion="11.0"/>
-        <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
-    </dependencies>
-    <scenes>
-        <!--View Controller-->
-        <scene sceneID="s0d-6b-0kx">
-            <objects>
-                <viewController id="Y6W-OH-hqX" sceneMemberID="viewController">
-                    <view key="view" contentMode="scaleToFill" id="5EZ-qb-Rvc">
-                        <rect key="frame" x="0.0" y="0.0" width="393" height="852"/>
-                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
-                        <subviews>
-                            <imageView clipsSubviews="YES" userInteractionEnabled="NO" contentMode="scaleAspectFit" horizontalHuggingPriority="251" verticalHuggingPriority="251" image="bg" translatesAutoresizingMaskIntoConstraints="NO" id="Mom-Je-A43">
-                                <rect key="frame" x="0.0" y="0.0" width="393" height="852"/>
-                            </imageView>
-                            <imageView clipsSubviews="YES" userInteractionEnabled="NO" contentMode="scaleAspectFit" horizontalHuggingPriority="251" verticalHuggingPriority="251" image="logo" translatesAutoresizingMaskIntoConstraints="NO" id="jVZ-ey-zjS">
-                                <rect key="frame" x="146.66666666666666" y="200" width="100" height="100"/>
-                                <constraints>
-                                    <constraint firstAttribute="width" constant="100" id="61A-Xv-MlD"/>
-                                    <constraint firstAttribute="height" constant="100" id="NWJ-mJ-K2O"/>
-                                </constraints>
-                            </imageView>
-                            <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="E-Parti" textAlignment="center" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="GrU-nK-tAY">
-                                <rect key="frame" x="138" y="332" width="117" height="48"/>
-                                <fontDescription key="fontDescription" type="system" pointSize="40"/>
-                                <color key="textColor" white="1" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
-                                <nil key="highlightedColor"/>
-                            </label>
-                        </subviews>
-                        <viewLayoutGuide key="safeArea" id="vDu-zF-Fre"/>
-                        <color key="backgroundColor" systemColor="systemBackgroundColor"/>
-                        <constraints>
-                            <constraint firstItem="jVZ-ey-zjS" firstAttribute="centerX" secondItem="Mom-Je-A43" secondAttribute="centerX" id="Atv-LB-aNW"/>
-                            <constraint firstItem="Mom-Je-A43" firstAttribute="leading" secondItem="vDu-zF-Fre" secondAttribute="leading" id="fQ2-yj-nze"/>
-                            <constraint firstItem="Mom-Je-A43" firstAttribute="top" secondItem="5EZ-qb-Rvc" secondAttribute="top" id="gVA-6N-OG4"/>
-                            <constraint firstItem="GrU-nK-tAY" firstAttribute="centerY" secondItem="Mom-Je-A43" secondAttribute="centerY" constant="-70" id="j81-qa-9vS"/>
-                            <constraint firstAttribute="bottom" secondItem="Mom-Je-A43" secondAttribute="bottom" id="lBn-me-aJu"/>
-                            <constraint firstItem="Mom-Je-A43" firstAttribute="trailing" secondItem="vDu-zF-Fre" secondAttribute="trailing" id="lka-KN-fEy"/>
-                            <constraint firstItem="jVZ-ey-zjS" firstAttribute="top" secondItem="Mom-Je-A43" secondAttribute="top" constant="200" id="nCq-oK-mTB"/>
-                            <constraint firstItem="GrU-nK-tAY" firstAttribute="centerX" secondItem="Mom-Je-A43" secondAttribute="centerX" id="sZE-bZ-0Xj"/>
-                        </constraints>
-                    </view>
-                </viewController>
-                <placeholder placeholderIdentifier="IBFirstResponder" id="Ief-a0-LHa" userLabel="First Responder" customClass="UIResponder" sceneMemberID="firstResponder"/>
-            </objects>
-            <point key="canvasLocation" x="-208.3969465648855" y="-13.380281690140846"/>
-        </scene>
-    </scenes>
-    <resources>
-        <image name="bg" width="375" height="812"/>
-        <image name="logo" width="100" height="100"/>
-        <systemColor name="systemBackgroundColor">
-            <color white="1" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
-        </systemColor>
-    </resources>
-</document>
--- a/yana/Utils/APILoading/APILoadingEffectView.swift
+++ b/yana/Utils/APILoading/APILoadingEffectView.swift
@@ -3,93 +3,62 @@ import SwiftUI
 // MARK: - API Loading Effect View

 /// 全局 API 加载效果视图
-/// 
-/// 该视图显示在屏幕最顶层，包含：
-/// - Loading 动画（88x88，60% alpha 黑色圆角背景）
-/// - 错误信息显示（2秒后自动消失）
-/// - 支持多个并发显示
-/// - 不阻挡用户点击操作
 struct APILoadingEffectView: View {
    @ObservedObject private var loadingManager = APILoadingManager.shared
    
    var body: some View {
        ZStack {
-            // 🚨 极简渲染策略：避免复杂的 ForEach，只显示第一个需要显示的项目
            if let firstItem = getFirstDisplayItem() {
-                SingleLoadingView(item: firstItem)
-                    .onAppear {
-                        debugInfoSync("🔍 Loading item appeared: \(firstItem.id)")
-                    }
-                    .onDisappear {
-                        debugInfoSync("🔍 Loading item disappeared: \(firstItem.id)")
-                    }
+                LoadingItemView(item: firstItem)
            }
        }
-        .allowsHitTesting(false) // 不阻挡用户点击
-        .ignoresSafeArea(.all) // 覆盖整个屏幕
-        .onReceive(loadingManager.$loadingItems) { items in
-            debugInfoSync("🔍 Loading items updated: \(items.count) items")
-        }
+        .allowsHitTesting(false)
+        .ignoresSafeArea(.all)
    }
    
-    /// 安全地获取第一个需要显示的项目
    private func getFirstDisplayItem() -> APILoadingItem? {
-        guard Thread.isMainThread else { 
-            debugWarnSync("⚠️ getFirstDisplayItem called from background thread")
-            return nil
-        }
-        
+        guard Thread.isMainThread else { return nil }
        return loadingManager.loadingItems.first { $0.shouldDisplay }
    }
 }

-// MARK: - Single Loading View
+// MARK: - Loading Item View

-/// 单个加载项视图 - 极简版本
-private struct SingleLoadingView: View {
+private struct LoadingItemView: View {
    let item: APILoadingItem
    
    var body: some View {
-        Group {
-            switch item.state {
-            case .loading:
-                SimpleLoadingView()
-                
-            case .error(let message):
-                if item.shouldShowError {
-                    SimpleErrorView(message: message)
-                }
-                
-            case .success:
-                EmptyView() // 成功状态不显示任何内容
+        switch item.state {
+        case .loading:
+            LoadingSpinnerView()
+        case .error(let message):
+            if item.shouldShowError {
+                ErrorMessageView(message: message)
+            } else {
+                EmptyView()
            }
+        case .success:
+            EmptyView()
        }
-        // 🚨 移除复杂动画，避免渲染问题
    }
 }

-// MARK: - Simple Loading View
+// MARK: - Loading Spinner View

-/// 极简 Loading 视图
-private struct SimpleLoadingView: View {
+private struct LoadingSpinnerView: View {
    var body: some View {
        VStack {
            Spacer()
            HStack {
                Spacer()
-                
-                // 极简黑色背景 + 白色圆圈
                ZStack {
                    RoundedRectangle(cornerRadius: 12)
                        .fill(Color.black.opacity(0.6))
                        .frame(width: 88, height: 88)
-                    
-                    // 使用最简单的 ProgressView
                    ProgressView()
                        .progressViewStyle(CircularProgressViewStyle(tint: .white))
                        .scaleEffect(1.2)
                }
-                
                Spacer()
            }
            Spacer()
@@ -97,10 +66,9 @@ private struct SimpleLoadingView: View {
    }
 }

-// MARK: - Simple Error View
+// MARK: - Error Message View

-/// 极简错误视图
-private struct SimpleErrorView: View {
+private struct ErrorMessageView: View {
    let message: String
    
    var body: some View {
@@ -108,13 +76,10 @@ private struct SimpleErrorView: View {
            Spacer()
            HStack {
                Spacer()
-                
-                // 极简错误提示
                VStack(spacing: 8) {
                    Image(systemName: "exclamationmark.triangle.fill")
                        .foregroundColor(.white)
                        .font(.title2)
-                    
                    Text(message)
                        .foregroundColor(.white)
                        .font(.system(size: 14))
@@ -127,101 +92,9 @@ private struct SimpleErrorView: View {
                        .fill(Color.black.opacity(0.6))
                )
                .frame(maxWidth: 250)
-                
                Spacer()
            }
            Spacer()
        }
    }
-}
-
-// MARK: - Preview
-
-//#if DEBUG
-//struct APILoadingEffectView_Previews: PreviewProvider {
-//    static var previews: some View {
-//        ZStack {
-//            // 模拟背景
-//            Rectangle()
-//                .fill(Color.blue.opacity(0.3))
-//                .ignoresSafeArea()
-//            
-//            VStack(spacing: 20) {
-//                Text("背景内容")
-//                    .font(.title)
-//                
-//                Button("测试按钮") {
-//                    debugInfoSync("按钮被点击了！")
-//                }
-//                .padding()
-//                .background(Color.blue)
-//                .foregroundColor(.white)
-//                .cornerRadius(8)
-//            }
-//            
-//            // Loading Effect View
-//            APILoadingEffectView()
-//        }
-//        .previewDisplayName("API Loading Effect")
-//        .onAppear {
-//            // 模拟不同状态的预览
-//            Task {
-//                let manager = APILoadingManager.shared
-//                
-//                // 添加 loading
-//                let id1 = manager.startLoading()
-//                
-//                // 2秒后添加错误
-//                DispatchQueue.main.asyncAfter(deadline: .now() + 2) {
-//                    Task {
-//                        manager.setError(id1, errorMessage: "网络连接失败，请检查网络设置")
-//                    }
-//                }
-//            }
-//        }
-//    }
-//}
-//
-//// MARK: - Preview Helpers
-//
-///// 预览用的测试状态
-//private struct PreviewStateModifier: ViewModifier {
-//    let showLoading: Bool
-//    let showError: Bool
-//    let errorMessage: String
-//    
-//    func body(content: Content) -> some View {
-//        content
-//            .onAppear {
-//                Task {
-//                    let manager = APILoadingManager.shared
-//                    
-//                    if showLoading {
-//                        let _ = manager.startLoading()
-//                    }
-//                    
-//                    if showError {
-//                        let id = manager.startLoading()
-//                        try? await Task.sleep(nanoseconds: 1_000_000_000) // 1秒
-//                        manager.setError(id, errorMessage: errorMessage)
-//                    }
-//                }
-//            }
-//    }
-//}
-//
-//extension View {
-//    /// 添加预览状态
-//    func previewLoadingState(
-//        showLoading: Bool = false,
-//        showError: Bool = false,
-//        errorMessage: String = "示例错误信息"
-//    ) -> some View {
-//        self.modifier(PreviewStateModifier(
-//            showLoading: showLoading,
-//            showError: showError,
-//            errorMessage: errorMessage
-//        ))
-//    }
-//}
-//#endif 
+} 
--- a/yana/Views/AppRootView.swift
+++ b/yana/Views/AppRootView.swift
@@ -3,27 +3,49 @@ import ComposableArchitecture

 struct AppRootView: View {
    @State private var isLoggedIn = false
+    @State private var mainStore: StoreOf<MainFeature>?
    
    var body: some View {
-        if isLoggedIn {
-            MainView(
-                store: Store(
-                    initialState: MainFeature.State()
-                ) {
-                    MainFeature()
+        Group {
+            if isLoggedIn {
+                if let mainStore = mainStore {
+                    MainView(store: mainStore)
+                        .onAppear {
+                            debugInfoSync("🔄 AppRootView: 使用已存在的MainStore")
+                        }
+                } else {
+                    // 简化逻辑：直接创建MainStore，避免重复创建
+                    let store = createMainStore()
+                    let _ = debugInfoSync("🆕 AppRootView: 创建MainStore")
+                    let _ = { mainStore = store }()
+                    
+                    MainView(store: store)
+                        .onAppear {
+                            debugInfoSync("💾 AppRootView: MainStore已保存")
+                        }
                }
-            )
-        } else {
-            LoginView(
-                store: Store(
-                    initialState: LoginFeature.State()
-                ) {
-                    LoginFeature()
-                },
-                onLoginSuccess: {
-                    isLoggedIn = true
-                }
-            )
+            } else {
+                LoginView(
+                    store: Store(
+                        initialState: LoginFeature.State()
+                    ) {
+                        LoginFeature()
+                    },
+                    onLoginSuccess: {
+                        debugInfoSync("🔐 AppRootView: 登录成功，准备创建MainStore")
+                        isLoggedIn = true
+                    }
+                )
+            }
+        }
+    }
+    
+    private func createMainStore() -> StoreOf<MainFeature> {
+        debugInfoSync("🏗️ AppRootView: 创建新的MainStore实例")
+        return Store(
+            initialState: MainFeature.State()
+        ) {
+            MainFeature()
        }
    }
 }
--- a/yana/Views/Components/EmptyStateView.swift
+++ b/yana/Views/Components/EmptyStateView.swift
@@ -0,0 +1,38 @@
+import SwiftUI
+
+struct EmptyStateView: View {
+    let onRetry: () -> Void
+    
+    var body: some View {
+        VStack(spacing: 12) {
+            Image(systemName: "doc.text")
+                .font(.system(size: 32))
+                .foregroundColor(.white.opacity(0.5))
+            
+            Text("暂无数据")
+                .font(.system(size: 16, weight: .medium))
+                .foregroundColor(.white.opacity(0.7))
+            
+            Button("重试") {
+                onRetry()
+            }
+            .font(.system(size: 14, weight: .medium))
+            .foregroundColor(.white)
+            .padding(.horizontal, 24)
+            .padding(.vertical, 8)
+            .background(Color.blue.opacity(0.8))
+            .cornerRadius(8)
+        }
+        .frame(height: 100)
+        .frame(maxWidth: .infinity)
+    }
+}
+
+#Preview {
+    ZStack {
+        Color.black
+        EmptyStateView {
+            print("重试按钮被点击")
+        }
+    }
+} 
--- a/yana/Views/Components/ImagePickerWithPreview/ImagePickerWithPreviewView.swift
+++ b/yana/Views/Components/ImagePickerWithPreview/ImagePickerWithPreviewView.swift
@@ -40,7 +40,7 @@ public struct ImagePickerWithPreviewView: View {
                }
            } else {
                // 不显示任何内容，避免空页面闪烁
-                EmptyView()
+                CustomEmptyView(onRetry: {})
                    .onChange(of: viewStore.inner.isLoading) { _, isLoading in
                        if isLoading && loadingId == nil {
                            loadingId = APILoadingManager.shared.startLoading()
--- a/yana/Views/FeedListView.swift
+++ b/yana/Views/FeedListView.swift
@@ -64,12 +64,11 @@ struct ErrorView: View {
 }

 // MARK: - EmptyView
-struct EmptyView: View {
+struct CustomEmptyView: View {
+    let onRetry: () -> Void
+    
    var body: some View {
-        Text(LocalizedString("feedList.empty", comment: "暂无动态"))
-            .font(.system(size: 16))
-            .foregroundColor(.white.opacity(0.7))
-            .padding(.top, 20)
+        EmptyStateView(onRetry: onRetry)
    }
 }

@@ -185,7 +184,9 @@ struct FeedListContentView: View {
        } else if let error = store.error {
            ErrorView(error: error)
        } else if store.moments.isEmpty {
-            EmptyView()
+            CustomEmptyView(onRetry: {
+                store.send(.reload)
+            })
        } else {
            MomentsListView(
                moments: store.moments,
--- a/yana/Views/MainView.swift
+++ b/yana/Views/MainView.swift
@@ -41,6 +41,8 @@ struct InternalMainView: View {
                            }
                        }
                        .onAppear {
+                            debugInfoSync("🚀 MainView onAppear")
+                            debugInfoSync("   当前selectedTab: \(store.selectedTab)")
                            store.send(.onAppear)
                        }
                }
@@ -85,6 +87,9 @@ struct InternalMainView: View {
                    store: store,
                    selectedTab: store.selectedTab
                )
+                .onChange(of: store.selectedTab) { _, newTab in
+                    debugInfoSync("🔄 MainView selectedTab changed: \(newTab)")
+                }
                .frame(maxWidth: .infinity, maxHeight: .infinity)
                .padding(.bottom, 80) // 为底部导航栏留出空间
                
@@ -92,9 +97,17 @@ struct InternalMainView: View {
                VStack {
                    Spacer()
                    BottomTabView(selectedTab: Binding(
-                        get: { Tab(rawValue: store.selectedTab.rawValue) ?? .feed },
+                        get: { 
+                            // 将MainFeature.Tab转换为BottomTabView.Tab
+                            let currentTab = store.selectedTab == .feed ? Tab.feed : Tab.me
+                            debugInfoSync("🔍 BottomTabView get: MainFeature.Tab.\(store.selectedTab) → BottomTabView.Tab.\(currentTab)")
+                            return currentTab
+                        },
                        set: { newTab in
-                            store.send(.selectTab(MainFeature.Tab(rawValue: newTab.rawValue) ?? .feed))
+                            // 将BottomTabView.Tab转换为MainFeature.Tab
+                            let mainTab: MainFeature.Tab = newTab == .feed ? .feed : .other
+                            debugInfoSync("🔍 BottomTabView set: BottomTabView.Tab.\(newTab) → MainFeature.Tab.\(mainTab)")
+                            store.send(.selectTab(mainTab))
                        }
                    ))
                }
@@ -113,22 +126,26 @@ struct MainContentView: View {
    let store: StoreOf<MainFeature>
    let selectedTab: MainFeature.Tab
    var body: some View {
-        Group {
-            if selectedTab == .feed {
-                FeedListView(store: store.scope(
-                    state: \.feedList,
-                    action: \.feedList
-                ))
-            } else if selectedTab == .other {
-                MeView(
-                    store: store.scope(
-                        state: \.me,
-                        action: \.me
-                    ),
-                    showCloseButton: false // MainView中不需要关闭按钮
-                )
-            } else {
-                EmptyView()
+        WithPerceptionTracking {
+            let _ = debugInfoSync("📱 MainContentView selectedTab: \(selectedTab)")
+            let _ = debugInfoSync("   与store.selectedTab一致: \(selectedTab == store.selectedTab)")
+            Group {
+                if selectedTab == .feed {
+                    FeedListView(store: store.scope(
+                        state: \.feedList,
+                        action: \.feedList
+                    ))
+                } else if selectedTab == .other {
+                    MeView(
+                        store: store.scope(
+                            state: \.me,
+                            action: \.me
+                        ),
+                        showCloseButton: false // MainView中不需要关闭按钮
+                    )
+                } else {
+                    CustomEmptyView(onRetry: {})
+                }
            }
        }
    }
--- a/yana/Views/MeView.swift
+++ b/yana/Views/MeView.swift
@@ -84,6 +84,7 @@ struct MeView: View {
                debugInfoSync("   动态数量: \(store.moments.count)")
                debugInfoSync("   用户信息错误: \(store.userInfoError ?? "nil")")
                debugInfoSync("   动态错误: \(store.momentsError ?? "nil")")
+                debugInfoSync("   显示错误视图: \(store.showErrorView)")
                store.send(.onAppear)
            }
            // 新增：图片预览弹窗
@@ -97,19 +98,19 @@ struct MeView: View {
                get: { store.showDetail },
                set: { _ in store.send(.detailDismissed) }
            )) {
-                if let selectedMoment = store.selectedMoment {
-                    let detailStore = Store(
-                        initialState: DetailFeature.State(moment: selectedMoment)
-                    ) {
-                        DetailFeature()
-                    }
-                    
-                    DetailView(store: detailStore)
-                        .onChange(of: detailStore.shouldDismiss) { _, shouldDismiss in
-                            if shouldDismiss {
-                                store.send(.detailDismissed)
-                            }
+            if let selectedMoment = store.selectedMoment {
+                let detailStore = Store(
+                    initialState: DetailFeature.State(moment: selectedMoment)
+                ) {
+                    DetailFeature()
+                }
+                
+                DetailView(store: detailStore)
+                    .onChange(of: detailStore.shouldDismiss) { _, shouldDismiss in
+                        if shouldDismiss {
+                            store.send(.detailDismissed)
                        }
+                    }
                }
            }
        }
@@ -165,12 +166,12 @@ struct MeView: View {
                        .padding(.top, 8)
                }
                .frame(maxWidth: .infinity, maxHeight: .infinity)
-            } else if let error = store.userInfoError ?? store.momentsError {
+            } else if let error = store.userInfoError {
                VStack(spacing: 12) {
                    Image(systemName: "exclamationmark.triangle")
                        .font(.system(size: 32))
                        .foregroundColor(.orange)
-                    Text("加载失败")
+                    Text("用户信息加载失败")
                        .font(.system(size: 16, weight: .medium))
                        .foregroundColor(.white)
                    Text(error)
@@ -179,7 +180,7 @@ struct MeView: View {
                        .multilineTextAlignment(.center)
                        .padding(.horizontal, 32)
                    Button("重试") {
-                        store.send(.refresh)
+                        store.send(.loadUserInfo)
                    }
                    .font(.system(size: 14, weight: .medium))
                    .foregroundColor(.white)
@@ -189,6 +190,12 @@ struct MeView: View {
                    .cornerRadius(8)
                }
                .frame(maxWidth: .infinity, maxHeight: .infinity)
+            } else if store.showErrorView {
+                // 显示错误视图组件
+                EmptyStateView {
+                    store.send(.retryMoments)
+                }
+                .frame(maxWidth: .infinity, maxHeight: .infinity)
            } else if store.moments.isEmpty {
                VStack(spacing: 12) {
                    Image(systemName: "doc.text")
@@ -213,6 +220,9 @@ struct MeView: View {
                    Text("调试: momentsError = \(store.momentsError ?? "nil")")
                        .font(.system(size: 12))
                        .foregroundColor(.yellow)
+                    Text("调试: showErrorView = \(store.showErrorView)")
+                        .font(.system(size: 12))
+                        .foregroundColor(.yellow)
                }
                .frame(maxWidth: .infinity, maxHeight: .infinity)
            } else {