refactor: 新增共享 StateView 三态组件并接入数据/占位页

- src/components/StateView 提供 LoadingState/ErrorState(可重试)/EmptyState，颜色走主题 token
- privacy 页复用 StateView 去除重复 loading/error 样板
- favorites/history 占位页接入 EmptyState 统一空态样式

app/favorites.tsx

@@ -1,36 +1,14 @@
-import { Ionicons } from '@expo/vector-icons';
+import { EmptyState } from '../src/components/StateView';
-import { StyleSheet, Text, View } from 'react-native';
-import { colors } from '../src/theme';
 
 /**
  * 我的收藏页（占位）
  */
 export default function FavoritesScreen() {
   return (
-    <View style={styles.container}>
+    <EmptyState
-      <Ionicons name="heart-outline" size={48} color={colors.textSecondary} />
+      icon="heart-outline"
-      <Text style={styles.title}>我的收藏</Text>
+      title="我的收藏"
-      <Text style={styles.subtitle}>收藏页面开发中，敬请期待</Text>
+      subtitle="收藏页面开发中，敬请期待"
-    </View>
+    />
   );
 }
-
-const styles = StyleSheet.create({
-  container: {
-    flex: 1,
-    backgroundColor: colors.pageBg,
-    alignItems: 'center',
-    justifyContent: 'center',
-  },
-  title: {
-    marginTop: 12,
-    fontSize: 20,
-    fontWeight: '700',
-    color: colors.textPrimary,
-  },
-  subtitle: {
-    marginTop: 8,
-    fontSize: 13,
-    color: colors.textSecondary,
-  },
-});

app/history.tsx

@@ -1,36 +1,14 @@
-import { Ionicons } from '@expo/vector-icons';
+import { EmptyState } from '../src/components/StateView';
-import { StyleSheet, Text, View } from 'react-native';
-import { colors } from '../src/theme';
 
 /**
  * 浏览历史页（占位）
  */
 export default function HistoryScreen() {
   return (
-    <View style={styles.container}>
+    <EmptyState
-      <Ionicons name="time-outline" size={48} color={colors.textSecondary} />
+      icon="time-outline"
-      <Text style={styles.title}>浏览历史</Text>
+      title="浏览历史"
-      <Text style={styles.subtitle}>浏览历史页面开发中，敬请期待</Text>
+      subtitle="浏览历史页面开发中，敬请期待"
-    </View>
+    />
   );
 }
-
-const styles = StyleSheet.create({
-  container: {
-    flex: 1,
-    backgroundColor: colors.pageBg,
-    alignItems: 'center',
-    justifyContent: 'center',
-  },
-  title: {
-    marginTop: 12,
-    fontSize: 20,
-    fontWeight: '700',
-    color: colors.textPrimary,
-  },
-  subtitle: {
-    marginTop: 8,
-    fontSize: 13,
-    color: colors.textSecondary,
-  },
-});

app/settings/privacy.tsx

@@ -1,8 +1,9 @@
 import { Ionicons } from '@expo/vector-icons';
 import { useRouter } from 'expo-router';
-import { ActivityIndicator, Pressable, ScrollView, StyleSheet, Switch, Text, View } from 'react-native';
+import { Pressable, ScrollView, StyleSheet, Switch, Text, View } from 'react-native';
 import { SafeAreaView } from 'react-native-safe-area-context';
 import { usePrivacyCenter } from '../../src/hooks';
+import { ErrorState, LoadingState } from '../../src/components/StateView';
 import { colors } from '../../src/theme';
 import type { PrivacyLevelInfo, PrivacySettingItem, PrivacySection } from '../../src/types';
 
@@ -40,7 +41,7 @@ function PrivacyLevelCard({ level }: { level: PrivacyLevelInfo }) {
           <Text style={styles.levelDesc}>{level.description}</Text>
         </View>
       </View>
-      <Pressable style={styles.levelBtn} onPress={() => console.log('进一步提升隐私')}>
+      <Pressable style={styles.levelBtn} onPress={() => {}}>
         <Text style={[styles.levelBtnText, { color: theme.text }]}>查看隐私报告</Text>
         <Ionicons name="chevron-forward" size={14} color={theme.text} />
       </Pressable>
@@ -68,7 +69,6 @@ function SettingRow({
       router.push(item.route);
       return;
     }
-    console.log('[PrivacyCenter] 点击', item.id);
   };
 
   if (item.type === 'switch') {
@@ -136,9 +136,7 @@ export default function PrivacyCenterScreen() {
     return (
       <SafeAreaView style={styles.safeArea} edges={['top']}>
         <Header onBack={() => router.back()} />
-        <View style={styles.stateBox}>
+        <LoadingState />
-          <ActivityIndicator size="large" color={colors.primary} />
-        </View>
       </SafeAreaView>
     );
   }
@@ -147,13 +145,7 @@ export default function PrivacyCenterScreen() {
     return (
       <SafeAreaView style={styles.safeArea} edges={['top']}>
         <Header onBack={() => router.back()} />
-        <View style={styles.stateBox}>
+        <ErrorState message="加载失败，请重试" onRetry={refresh} />
-          <Ionicons name="alert-circle-outline" size={40} color={colors.danger} />
-          <Text style={styles.stateText}>加载失败，请重试</Text>
-          <Pressable style={styles.retryBtn} onPress={refresh}>
-            <Text style={styles.retryText}>重试</Text>
-          </Pressable>
-        </View>
       </SafeAreaView>
     );
   }
@@ -214,29 +206,6 @@ const styles = StyleSheet.create({
     padding: 12,
     paddingBottom: 24,
   },
-  stateBox: {
-    flex: 1,
-    alignItems: 'center',
-    justifyContent: 'center',
-    gap: 12,
-  },
-  stateText: {
-    marginTop: 12,
-    fontSize: 14,
-    color: colors.textSecondary,
-  },
-  retryBtn: {
-    marginTop: 16,
-    paddingHorizontal: 24,
-    paddingVertical: 8,
-    borderRadius: 18,
-    backgroundColor: colors.primaryBtn,
-  },
-  retryText: {
-    fontSize: 13,
-    fontWeight: '600',
-    color: colors.white,
-  },
   levelCard: {
     borderRadius: 12,
     padding: 16,

src/components/StateView.tsx

@@ -0,0 +1,107 @@
+import { Ionicons } from '@expo/vector-icons';
+import type { ReactNode } from 'react';
+import { ActivityIndicator, Pressable, StyleSheet, Text, View } from 'react-native';
+import { colors } from '../theme';
+
+/* ===================== 通用状态视图 =====================
+ * 统一承载「加载中 / 加载失败 / 空数据」三态，供数据页复用，
+ * 避免各页面重复编写 ActivityIndicator + 重试按钮样板代码。
+ * 颜色全部走主题 token，遵守 AGENTS.md 配色约束。
+ */
+
+function StateBox({ children }: { children: ReactNode }) {
+  return <View style={styles.box}>{children}</View>;
+}
+
+/** 加载中 */
+export function LoadingState({ text = '加载中…' }: { text?: string }) {
+  return (
+    <StateBox>
+      <ActivityIndicator size="large" color={colors.primary} />
+      <Text style={styles.text}>{text}</Text>
+    </StateBox>
+  );
+}
+
+/** 加载失败（可重试） */
+export function ErrorState({
+  message = '加载失败，请重试',
+  onRetry,
+}: {
+  message?: string;
+  onRetry?: () => void;
+}) {
+  return (
+    <StateBox>
+      <Ionicons name="alert-circle-outline" size={40} color={colors.danger} />
+      <Text style={styles.text}>{message}</Text>
+      {onRetry ? (
+        <Pressable style={styles.retryBtn} onPress={onRetry}>
+          <Text style={styles.retryText}>重试</Text>
+        </Pressable>
+      ) : null}
+    </StateBox>
+  );
+}
+
+/** 空数据 / 占位 */
+export function EmptyState({
+  icon = 'document-text-outline',
+  title,
+  subtitle,
+  actionLabel,
+  onAction,
+}: {
+  icon?: keyof typeof Ionicons.glyphMap;
+  title: string;
+  subtitle?: string;
+  actionLabel?: string;
+  onAction?: () => void;
+}) {
+  return (
+    <StateBox>
+      <Ionicons name={icon} size={48} color={colors.textSecondary} />
+      <Text style={styles.title}>{title}</Text>
+      {subtitle ? <Text style={styles.text}>{subtitle}</Text> : null}
+      {actionLabel && onAction ? (
+        <Pressable style={styles.retryBtn} onPress={onAction}>
+          <Text style={styles.retryText}>{actionLabel}</Text>
+        </Pressable>
+      ) : null}
+    </StateBox>
+  );
+}
+
+const styles = StyleSheet.create({
+  box: {
+    flex: 1,
+    alignItems: 'center',
+    justifyContent: 'center',
+    gap: 12,
+    paddingHorizontal: 32,
+  },
+  text: {
+    marginTop: 4,
+    fontSize: 14,
+    color: colors.textSecondary,
+    textAlign: 'center',
+  },
+  title: {
+    marginTop: 12,
+    fontSize: 20,
+    fontWeight: '700',
+    color: colors.textPrimary,
+  },
+  retryBtn: {
+    marginTop: 16,
+    paddingHorizontal: 24,
+    paddingVertical: 8,
+    borderRadius: 18,
+    backgroundColor: colors.primaryBtn,
+  },
+  retryText: {
+    fontSize: 13,
+    fontWeight: '600',
+    color: colors.white,
+  },
+});