完成了用户账户加密，更改了只读日程的显示样式；日程中的地址，可以通过高德地图导航了。

entry/src/main/ets/common/AccountStore.ets

@@ -1,5 +1,12 @@
 // entry/src/main/ets/common/AccountStore.ets
+// DAV 账号持久化（加密版）：
+// - 账号列表（含密码）序列化为 JSON 后用 AES-256-GCM 整体加密，
+//   存储为 caldav_vault 偏好中的 data_b64（iv:密文+tag）；
+// - AES 密钥首次随机生成后存于同一偏好（key_b64）；
+// - 旧版明文存储（caldav_account 的 acc_0..n）在首次 loadAll 时自动迁移并清除。
 import { preferences } from '@kit.ArkData';
+import { cryptoFramework } from '@kit.CryptoArchitectureKit';
+import { util } from '@kit.ArkTS';
 import { common } from '@kit.AbilityKit';
 import { BusinessError } from '@kit.BasicServicesKit';
 
@@ -11,6 +18,15 @@ export const TYPE_KEYS: string[] = [TYPE_CALDAV, TYPE_CARDDAV, TYPE_WEBDAV];
 /** 本机事件所属的虚拟日历 key */
 export const LOCAL_CAL_KEY: string = 'local';
 
+/** 旧版明文存储（迁移后清除） */
+const LEGACY_STORE: string = 'caldav_account';
+const LEGACY_COUNT_KEY: string = 'accountCount';
+
+/** 加密存储 */
+const VAULT_STORE: string = 'caldav_vault';
+const VAULT_KEY: string = 'key_b64';
+const VAULT_DATA: string = 'data_b64';
+
 /**
  * DAV 账号（@Observed 使同步状态变化能刷新列表 UI）
  */
@@ -52,13 +68,100 @@ export class BookPalette {
   }
 }
 
+function bytesToB64(u: Uint8Array): string {
+  return new util.Base64Helper().encodeToStringSync(u);
+}
+
+function b64ToBytes(s: string): Uint8Array {
+  return new util.Base64Helper().decodeSync(s);
+}
+
+function strToBytes(s: string): Uint8Array {
+  return new util.TextEncoder().encodeInto(s);
+}
+
+function bytesToStr(u: Uint8Array): string {
+  return new util.TextDecoder('utf-8').decodeToString(u);
+}
+
+/** 账号加密存储实现（AES-256-GCM，密钥持久化） */
+class Vault {
+  private static keyB64: string = ''; // 进程内缓存，避免每轮同步重复读偏好
+
+  static async prefs(context: common.Context): Promise<preferences.Preferences> {
+    return preferences.getPreferences(context, VAULT_STORE);
+  }
+
+  /** 获取（或首次生成）AES-256 密钥 */
+  private static async aesKey(context: common.Context): Promise<cryptoFramework.SymKey> {
+    if (Vault.keyB64 === '') {
+      const store: preferences.Preferences = await Vault.prefs(context);
+      Vault.keyB64 = await store.get(VAULT_KEY, '') as string;
+    }
+    const gen: cryptoFramework.SymKeyGenerator =
+      cryptoFramework.createSymKeyGenerator('AES256');
+    if (Vault.keyB64 !== '') {
+      return gen.convertKey({ data: b64ToBytes(Vault.keyB64) });
+    }
+    const key: cryptoFramework.SymKey = await gen.generateSymKey();
+    const raw: cryptoFramework.DataBlob = key.getEncoded();
+    Vault.keyB64 = bytesToB64(raw.data);
+    const store: preferences.Preferences = await Vault.prefs(context);
+    await store.put(VAULT_KEY, Vault.keyB64);
+    await store.flush();
+    return key;
+  }
+
+  private static gcmParams(iv: Uint8Array, authTag: Uint8Array): cryptoFramework.GcmParamsSpec {
+    return {
+      algName: 'GcmParamsSpec',
+      iv: { data: iv },
+      aad: { data: new Uint8Array(0) },
+      authTag: { data: authTag }
+    };
+  }
+
+  /** 加密：返回 base64(iv) + ':' + base64(密文+authTag) */
+  static async encrypt(context: common.Context, plain: string): Promise<string> {
+    const key: cryptoFramework.SymKey = await Vault.aesKey(context);
+    const iv: Uint8Array =
+      cryptoFramework.createRandom().generateRandomSync(12).data;
+    const cipher: cryptoFramework.Cipher =
+      cryptoFramework.createCipher('AES256|GCM|NoPadding');
+    await cipher.init(cryptoFramework.CryptoMode.ENCRYPT_MODE, key,
+      Vault.gcmParams(iv, new Uint8Array(16)));
+    const out: cryptoFramework.DataBlob =
+      await cipher.doFinal({ data: strToBytes(plain) });
+    return `${bytesToB64(iv)}:${bytesToB64(out.data)}`;
+  }
+
+  /** 解密：失败返回 null（调用方按"无账号"或迁移路径处理） */
+  static async decrypt(context: common.Context, stored: string): Promise<string | null> {
+    const sep: number = stored.indexOf(':');
+    if (sep <= 0) {
+      return null;
+    }
+    const iv: Uint8Array = b64ToBytes(stored.substring(0, sep));
+    const blob: Uint8Array = b64ToBytes(stored.substring(sep + 1));
+    if (blob.length <= 16) {
+      return null;
+    }
+    const tag: Uint8Array = blob.slice(blob.length - 16);
+    const ct: Uint8Array = blob.slice(0, blob.length - 16);
+    const key: cryptoFramework.SymKey = await Vault.aesKey(context);
+    const cipher: cryptoFramework.Cipher =
+      cryptoFramework.createCipher('AES256|GCM|NoPadding');
+    await cipher.init(cryptoFramework.CryptoMode.DECRYPT_MODE, key,
+      Vault.gcmParams(iv, tag));
+    const out: cryptoFramework.DataBlob = await cipher.doFinal({ data: ct });
+    return bytesToStr(out.data);
+  }
+}
+
 /**
- * 账号持久化：每个账号编码为一个分隔符字符串存储（acc_0、acc_1…），避免 JSON 结构化类型问题
+ * 账号持久化：加密 JSON 存储 + 旧版明文自动迁移
  */
 export class AccountStore {
-  private static readonly STORE: string = 'caldav_account';
-  private static readonly COUNT_KEY: string = 'accountCount';
-
   /** 规范化颜色：#RRGGBBAA → #RRGGBB；非法返回空串 */
   static normalizeColor(raw: string): string {
     const v: string = raw.trim();
@@ -71,25 +174,6 @@ export class AccountStore {
     return '';
   }
 
-  private static encodeAccount(acc: DavAccount): string {
-    const safe = (s: string): string => s.split('|').join('∥');
-    const parts: string[] = [
-      safe(acc.type),
-      safe(acc.name),
-      safe(acc.serverUrl),
-      safe(acc.username),
-      safe(acc.password),
-      String(acc.itemCount),
-      safe(acc.lastSyncTime),
-      acc.calendarHrefs.join(';'),
-      acc.calendarNames.join(';'),
-      acc.calendarColors.join(';'),
-      safe(acc.id),
-      acc.calendarWritable.join(';')
-    ];
-    return parts.join('|');
-  }
-
   private static decodeAccount(raw: string): DavAccount | null {
     const parts: string[] = raw.split('|');
     if (parts.length < 9) {
@@ -119,69 +203,153 @@ export class AccountStore {
     return acc;
   }
 
-  static async loadAll(context: common.Context): Promise<DavAccount[]> {
-    const result: DavAccount[] = [];
-    let migrated: boolean = false;
+  /** 旧版明文账号编码（迁移旧数据时使用） */
+  private static encodeLegacyAccount(acc: DavAccount): string {
+    const safe = (s: string): string => s.split('|').join('∥');
+    const parts: string[] = [
+      safe(acc.type),
+      safe(acc.name),
+      safe(acc.serverUrl),
+      safe(acc.username),
+      safe(acc.password),
+      String(acc.itemCount),
+      safe(acc.lastSyncTime),
+      acc.calendarHrefs.join(';'),
+      acc.calendarNames.join(';'),
+      acc.calendarColors.join(';'),
+      safe(acc.id),
+      acc.calendarWritable.join(';')
+    ];
+    return parts.join('|');
+  }
+
+  /** 从旧版明文存储读取（无则返回 null） */
+  private static async loadLegacy(context: common.Context): Promise<DavAccount[] | null> {
     try {
       const store: preferences.Preferences =
-        await preferences.getPreferences(context, AccountStore.STORE);
-      const count: number = await store.get(AccountStore.COUNT_KEY, 0) as number;
-      console.info(`[AccountStore] loadAll: count=${count}`);
+        await preferences.getPreferences(context, LEGACY_STORE);
+      const count: number = await store.get(LEGACY_COUNT_KEY, 0) as number;
+      if (count <= 0) {
+        return null;
+      }
+      const result: DavAccount[] = [];
       for (let i = 0; i < count; i++) {
         const raw = await store.get(`acc_${i}`, '') as string;
         if (raw === '') {
-          console.warn(`[AccountStore] loadAll: acc_${i} 为空`);
           continue;
         }
         const acc = AccountStore.decodeAccount(raw);
         if (acc !== null) {
           if (acc.id === '') {
-            // 旧版本存储没有 id：补发一个并标记需要回写，保证 id 跨启动稳定
             acc.id = `acc${Date.now()}_${i}`;
-            migrated = true;
           }
           result.push(acc);
-        } else {
-          console.error(`[AccountStore] loadAll: acc_${i} 解码失败，raw 长度=${raw.length}`);
         }
       }
+      return result;
+    } catch (err) {
+      return null;
+    }
+  }
+
+  /** 清除旧版明文存储（迁移完成后调用） */
+  private static async clearLegacy(context: common.Context): Promise<void> {
+    try {
+      const store: preferences.Preferences =
+        await preferences.getPreferences(context, LEGACY_STORE);
+      const count: number = await store.get(LEGACY_COUNT_KEY, 0) as number;
+      for (let i = 0; i < count; i++) {
+        store.delete(`acc_${i}`);
+      }
+      store.delete(LEGACY_COUNT_KEY);
+      await store.flush();
+    } catch (err) {
+      // 清理失败不影响使用，下次迁移再试
+    }
+  }
+
+  static async loadAll(context: common.Context): Promise<DavAccount[]> {
+    // 1) 新加密存储
+    try {
+      const store: preferences.Preferences = await Vault.prefs(context);
+      const data: string = await store.get(VAULT_DATA, '') as string;
+      if (data !== '') {
+        const plain: string | null = await Vault.decrypt(context, data);
+        if (plain !== null) {
+          const arr: Array<Record<string, Object>> =
+            JSON.parse(plain) as Array<Record<string, Object>>;
+          const result: DavAccount[] = [];
+          for (const o of arr) {
+            const a = new DavAccount();
+            a.id = o['id'] !== undefined ? o['id'] as string : '';
+            a.type = o['type'] !== undefined ? o['type'] as string : TYPE_CALDAV;
+            a.name = o['name'] !== undefined ? o['name'] as string : '';
+            a.serverUrl = o['serverUrl'] !== undefined ? o['serverUrl'] as string : '';
+            a.username = o['username'] !== undefined ? o['username'] as string : '';
+            a.password = o['password'] !== undefined ? o['password'] as string : '';
+            a.calendarHrefs = o['calendarHrefs'] !== undefined ? o['calendarHrefs'] as string[] : [];
+            a.calendarNames = o['calendarNames'] !== undefined ? o['calendarNames'] as string[] : [];
+            a.calendarColors = o['calendarColors'] !== undefined ? o['calendarColors'] as string[] : [];
+            a.calendarWritable = o['calendarWritable'] !== undefined ? o['calendarWritable'] as string[] : [];
+            a.itemCount = o['itemCount'] !== undefined ? o['itemCount'] as number : 0;
+            a.lastSyncTime = o['lastSyncTime'] !== undefined ? o['lastSyncTime'] as string : '';
+            if (a.id === '') {
+              a.id = `acc${Date.now()}_${result.length}`;
+            }
+            result.push(a);
+          }
+          console.info(`[AccountStore] loadAll: ${result.length} 个账号（加密存储）`);
+          return result;
+        }
+        console.error('[AccountStore] 加密账号数据解密失败');
+      }
     } catch (err) {
       const e = err as BusinessError;
-      console.error(`读取账号失败: ${e.message}`);
+      console.error(`[AccountStore] 读取加密账号失败: ${e.message}`);
     }
-    if (migrated) {
-      try {
-        await AccountStore.saveAll(context, result);
-        console.info('旧版账号数据已迁移：补充持久化账号 id');
-      } catch (err) {
-        const e = err as BusinessError;
-        console.error(`账号 id 迁移回写失败: ${e.message}`);
-      }
+
+    // 2) 旧版明文存储 → 迁移
+    const legacy: DavAccount[] | null = await AccountStore.loadLegacy(context);
+    if (legacy !== null) {
+      console.info(`[AccountStore] 迁移 ${legacy.length} 个明文账号到加密存储`);
+      await AccountStore.saveAll(context, legacy, true);
+      await AccountStore.clearLegacy(context);
+      return legacy;
     }
-    return result;
+    return [];
   }
 
   /**
-   * 保存全部账号。
-   * 防御：存储里已有账号时，禁止用空列表覆盖（调用方若因读取异常拿到空列表再回写，
+   * 保存全部账号（整体加密写入）。
+   * 防御：当前已有账号时，禁止用空列表覆盖（调用方因读取异常拿到空列表再回写，
    * 会把所有账号抹掉）。仅删除账号的合法场景通过 force=true 放行。
    */
   static async saveAll(context: common.Context, accounts: DavAccount[], force: boolean = false): Promise<void> {
-    const store: preferences.Preferences =
-      await preferences.getPreferences(context, AccountStore.STORE);
-    const oldCount: number = await store.get(AccountStore.COUNT_KEY, 0) as number;
-    if (accounts.length === 0 && oldCount > 0 && !force) {
-      console.error(`[AccountStore] 拒绝用空列表覆盖账号存储（原有 ${oldCount} 个账号）`);
+    // 防御：先看加密存储里现有数量（空列表覆盖保护）
+    let existing: number = -1;
+    try {
+      const store: preferences.Preferences = await Vault.prefs(context);
+      const data: string = await store.get(VAULT_DATA, '') as string;
+      if (data !== '') {
+        const plain: string | null = await Vault.decrypt(context, data);
+        if (plain !== null) {
+          existing = (JSON.parse(plain) as Array<Record<string, Object>>).length;
+        }
+      }
+    } catch (err) {
+      // 读取失败按"未知"处理，不拦截
+      existing = -1;
+    }
+    if (accounts.length === 0 && existing > 0 && !force) {
+      console.error(`[AccountStore] 拒绝用空列表覆盖账号存储（原有 ${existing} 个账号）`);
       throw new Error('账号列表为空，已阻止覆盖存储（保护原有账号数据）');
     }
-    for (let i = 0; i < oldCount; i++) {
-      store.delete(`acc_${i}`);
-    }
-    for (let i = 0; i < accounts.length; i++) {
-      await store.put(`acc_${i}`, AccountStore.encodeAccount(accounts[i]));
-    }
-    await store.put(AccountStore.COUNT_KEY, accounts.length);
+    const plain: string = JSON.stringify(accounts);
+    const enc: string = await Vault.encrypt(context, plain);
+    const store: preferences.Preferences = await Vault.prefs(context);
+    await store.put(VAULT_DATA, enc);
     await store.flush();
+    console.info(`[AccountStore] saveAll: ${accounts.length} 个账号已加密写入`);
   }
 
   static async addAccount(context: common.Context, acc: DavAccount): Promise<void> {
@@ -189,4 +357,4 @@ export class AccountStore {
     list.push(acc);
     await AccountStore.saveAll(context, list);
   }
-}
+}

entry/src/main/ets/common/AppSettings.ets

@@ -138,6 +138,32 @@ export class AppSettings {
     }
   }
 
+  /**
+   * 删除账号后的设置清理：移除该账号名下所有日历本的
+   * 手动只读标记、提醒静音标记，并清空指向它的备份目标。
+   */
+  static async cleanupAccountSettings(context: common.Context, accId: string): Promise<void> {
+    try {
+      const manual: string[] = await AppSettings.getManualReadonlyKeys(context);
+      const manual2: string[] = manual.filter((k: string): boolean => !k.startsWith(`${accId}_`));
+      if (manual2.length !== manual.length) {
+        await AppSettings.setManualReadonlyKeys(context, manual2);
+      }
+      const muted: string[] = await AppSettings.getMutedReminderKeys(context);
+      const muted2: string[] = muted.filter((k: string): boolean => !k.startsWith(`${accId}_`));
+      if (muted2.length !== muted.length) {
+        await AppSettings.setMutedReminderKeys(context, muted2);
+      }
+      const backupKey: string = await AppSettings.getBackupCalKey(context);
+      if (backupKey.startsWith(`${accId}_`)) {
+        await AppSettings.setBackupCalKey(context, '');
+      }
+    } catch (err) {
+      const e = err as BusinessError;
+      console.error(`清理账号设置失败: ${e.message}`);
+    }
+  }
+
   /** 系统日历模式：display = 仅混合显示；backup = 本地系统日程备份到选定 CalDAV 日历本 */
   static async getSysCalMode(context: common.Context): Promise<string> {
     try {

entry/src/main/ets/pages/AccountsPage.ets

@@ -8,6 +8,7 @@ import { SyncEngine } from '../common/SyncEngine';
 import { EditNavParams } from './EditAccountPage';
 import { EventDb } from '../common/EventDb';
 import { LogUtil } from '../common/LogUtil';
+import { AppSettings } from '../common/AppSettings';
 import { ScreenKeeper } from '../common/ScreenKeeper';
 
 @Entry
@@ -150,8 +151,11 @@ struct AccountsPage {
     }
     try {
       this.accounts = this.accounts.filter((a: DavAccount): boolean => a.id !== acc.id);
-      await AccountStore.saveAll(context, this.accounts);
+      // force=true：删除最后一个账号时列表为空是合法场景，允许覆盖
+      await AccountStore.saveAll(context, this.accounts, true);
+      // 删除该账号全部本地日程/待办，并清理只读/静音/备份目标等关联设置
       await EventDb.deleteAccountEvents(context, acc.id);
+      await AppSettings.cleanupAccountSettings(context, acc.id);
       this.getUIContext().getPromptAction()
         .showToast({ message: `「${acc.name}」已删除` });
     } catch (err) {

entry/src/main/ets/pages/Index.ets

@@ -2,7 +2,8 @@
 // 同步日历主界面：月视图（左右滑动翻月）/ 周视图 / 日视图 / 日程列表
 // 混合展示 DAV 与系统日历；每分钟自动同步；可"回到今天"
 import { mediaquery, router } from '@kit.ArkUI';
-import { common } from '@kit.AbilityKit';
+import { common, abilityAccessCtrl, bundleManager } from '@kit.AbilityKit';
+import { geoLocationManager } from '@kit.LocationKit';
 import { BusinessError, pasteboard } from '@kit.BasicServicesKit';
 import { DavAccount, AccountStore, CalSource, TYPE_CALDAV } from '../common/AccountStore';
 import { DisplayEvent, CalendarDataService } from '../common/CalendarDataService';
@@ -55,6 +56,8 @@ struct Index {
   private autoSyncTimer: number = -1;
   private lastSyncTime: number = 0;
   private permissionAsked: boolean = false;
+  @State detailShow: boolean = false; // 只读日程详情半屏弹层
+  @State detailEvent: DisplayEvent | null = null;
 
   aboutToAppear(): void {
     const ctx = this.getUIContext().getHostContext();
@@ -433,42 +436,304 @@ struct Index {
     router.pushUrl({ url: 'pages/EventEditPage' });
   }
 
-  /** 只读日程详情弹窗 */
+  /** 只读日程详情：改为卡片式半屏弹层（与编辑页风格一致） */
   private showEventDetail(e: DisplayEvent): void {
-    const lines: string[] = [];
+    this.detailEvent = e;
+    this.detailShow = true;
+  }
+
+  private detailStartText(e: DisplayEvent): string {
     if (e.isAllDay) {
-      lines.push(`时间：全天 ${this.fmtDateCn(e.startTime)}`);
-      if (this.spansDays(e)) {
-        lines.push(`        ~ ${this.fmtDateCn(e.endTime)}`);
-      }
-    } else if (this.spansDays(e)) {
-      lines.push(`时间：${this.fmtDateCn(e.startTime)} ${this.fmtTime(e.startTime)}`);
-      lines.push(`        ~ ${this.fmtDateCn(e.endTime)} ${this.fmtTime(e.endTime)}`);
+      return `全天 ${this.fmtDateCn(e.startTime)}`;
+    }
+    return `${this.fmtDateCn(e.startTime)} ${this.fmtTime(e.startTime)}`;
+  }
+
+  private detailEndText(e: DisplayEvent): string {
+    const sameDay: boolean = this.startOfDay(e.startTime) === this.startOfDay(e.endTime);
+    if (e.isAllDay) {
+      return `全天 ${this.fmtDateCn(e.endTime)}`;
+    }
+    if (sameDay) {
+      return this.fmtTime(e.endTime);
+    }
+    return `${this.fmtDateCn(e.endTime)} ${this.fmtTime(e.endTime)}`;
+  }
+
+  /** 点击地点：拉起高德 App 路线规划，地址经系统地理编码转为坐标后传入目的地 */
+  private async openInAmap(address: string): Promise<void> {
+    const context = this.getUIContext().getHostContext();
+    if (context === undefined || address === '') {
+      return;
+    }
+    const ctx = context as common.UIAbilityContext;
+    const enc: string = encodeURIComponent(address);
+    // 高德鸿蒙深链 dlat/dlon 为必填（dname 仅作名称显示），先地理编码拿坐标
+    let coords: number[] | null = null;
+    if (await this.ensureLocationPermission()) {
+      coords = await this.geocodeAddress(address);
+    }
+    const base: string = 'amapuri://route/plan/?sourceApplication=SyncCalendar';
+    let link: string;
+    if (coords !== null) {
+      // 系统地理编码返回 WGS84，高德要求 GCJ02（dev=0），做本地转换
+      const gcj: number[] = this.wgs84ToGcj02(coords[0], coords[1]);
+      link = `${base}&dlat=${gcj[0].toFixed(6)}&dlon=${gcj[1].toFixed(6)}&dname=${enc}&dev=0&t=0`;
     } else {
-      lines.push(`时间：${this.fmtDateCn(e.startTime)} ${this.fmtTime(e.startTime)} ~ ${this.fmtTime(e.endTime)}`);
+      // 无坐标时尽力而为：部分版本只认坐标，目的地可能为空
+      link = `${base}&dname=${enc}&dev=0&t=0`;
     }
-    if (e.location !== '') {
-      lines.push(`地点：${e.location}`);
+    try {
+      await ctx.openLink(link);
+      LogUtil.write(`已拉起高德导航：${address}（坐标=${coords !== null ? '有' : '无'}）`);
+      return;
+    } catch (err) {
+      LogUtil.write(`高德深链打开失败：${(err as BusinessError).message}`);
     }
-    if (e.recurring) {
-      lines.push('重复：是');
-    }
-    if (e.calName !== '') {
-      lines.push(`日历本：${e.calName}${e.isSystem ? '' : '（只读）'}`);
-    }
-    if (e.description !== '') {
-      lines.push(`备注：${e.description}`);
-    }
-    this.getUIContext().showAlertDialog({
-      title: e.title === '' ? '(无标题)' : e.title,
-      message: lines.join('\n'),
-      autoCancel: true,
-      alignment: DialogAlignment.Center,
-      primaryButton: {
-        value: '关闭',
-        action: (): void => {}
+    this.getUIContext().getPromptAction().showToast({ message: '未安装高德地图或无法打开' });
+  }
+
+  /** 确认定位权限（地理编码依赖），未授权时向用户申请一次 */
+  private async ensureLocationPermission(): Promise<boolean> {
+    try {
+      const atManager = abilityAccessCtrl.createAtManager();
+      const bundleInfo = bundleManager.getBundleInfoForSelfSync(
+        bundleManager.BundleFlag.GET_BUNDLE_INFO_WITH_APPLICATION);
+      const tokenId = bundleInfo.appInfo.accessTokenId;
+      const status = await atManager.checkAccessToken(tokenId, 'ohos.permission.LOCATION');
+      if (status === abilityAccessCtrl.GrantStatus.PERMISSION_GRANTED) {
+        return true;
       }
-    });
+    } catch (err) {
+      // 未授权会走申请流程
+    }
+    try {
+      const context = this.getUIContext().getHostContext() as common.UIAbilityContext;
+      const atManager = abilityAccessCtrl.createAtManager();
+      // LOCATION 与 APPROXIMATELY_LOCATION 必须一起申请
+      const result = await atManager.requestPermissionsFromUser(context,
+        ['ohos.permission.LOCATION', 'ohos.permission.APPROXIMATELY_LOCATION']);
+      return result.authResults.every((r: number): boolean => r === 0);
+    } catch (err) {
+      return false;
+    }
+  }
+
+  /** 正向地理编码：地址 → 坐标（系统服务，无需高德 key） */
+  private async geocodeAddress(address: string): Promise<number[] | null> {
+    try {
+      if (!geoLocationManager.isGeocoderAvailable()) {
+        LogUtil.write('系统地理编码服务不可用');
+        return null;
+      }
+      const req: geoLocationManager.GeoCodeRequest = { description: address, maxItems: 1 };
+      const list: geoLocationManager.GeoAddress[] =
+        await geoLocationManager.getAddressesFromLocationName(req);
+      if (list.length > 0 && list[0].latitude !== undefined && list[0].longitude !== undefined) {
+        return [list[0].latitude, list[0].longitude];
+      }
+      LogUtil.write(`地理编码无结果：${address}`);
+    } catch (err) {
+      LogUtil.write(`地理编码失败：${(err as BusinessError).message}`);
+    }
+    return null;
+  }
+
+  /** WGS84 → GCJ02 火星坐标转换（中国境内；标准偏移算法） */
+  private wgs84ToGcj02(wlat: number, wlon: number): number[] {
+    const a: number = 6378245.0;
+    const ee: number = 0.00669342162296594323;
+    const transformLat = (x: number, y: number): number => {
+      let ret = -100.0 + 2.0 * x + 3.0 * y + 0.2 * y * y + 0.1 * x * y
+        + 0.2 * Math.sqrt(Math.abs(x));
+      ret += (20.0 * Math.sin(6.0 * x * Math.PI) + 20.0 * Math.sin(2.0 * x * Math.PI)) * 2.0 / 3.0;
+      ret += (20.0 * Math.sin(y * Math.PI) + 40.0 * Math.sin(y / 3.0 * Math.PI)) * 2.0 / 3.0;
+      ret += (160.0 * Math.sin(y / 12.0 * Math.PI) + 320.0 * Math.sin(y * Math.PI / 30.0)) * 2.0 / 3.0;
+      return ret;
+    };
+    const transformLon = (x: number, y: number): number => {
+      let ret = 300.0 + x + 2.0 * y + 0.1 * x * x + 0.1 * x * y + 0.1 * Math.sqrt(Math.abs(x));
+      ret += (20.0 * Math.sin(6.0 * x * Math.PI) + 20.0 * Math.sin(2.0 * x * Math.PI)) * 2.0 / 3.0;
+      ret += (20.0 * Math.sin(x * Math.PI) + 40.0 * Math.sin(x / 3.0 * Math.PI)) * 2.0 / 3.0;
+      ret += (150.0 * Math.sin(x / 12.0 * Math.PI) + 300.0 * Math.sin(x / 30.0 * Math.PI)) * 2.0 / 3.0;
+      return ret;
+    };
+    if (wlon < 72.004 || wlon > 137.8347 || wlat < 0.8293 || wlat > 55.8271) {
+      return [wlat, wlon]; // 中国境外无偏移
+    }
+    let dLat: number = transformLat(wlon - 105.0, wlat - 35.0);
+    let dLon: number = transformLon(wlon - 105.0, wlat - 35.0);
+    const radLat: number = wlat / 180.0 * Math.PI;
+    let magic: number = Math.sin(radLat);
+    magic = 1 - ee * magic * magic;
+    const sqrtMagic: number = Math.sqrt(magic);
+    dLat = (dLat * 180.0) / ((a * (1 - ee)) / (magic * sqrtMagic) * Math.PI);
+    dLon = (dLon * 180.0) / (a / sqrtMagic * Math.cos(radLat) * Math.PI);
+    return [wlat + dLat, wlon + dLon];
+  }
+
+  @Builder
+  detailTag(text: string) {
+    Text(text)
+      .fontSize(11)
+      .fontColor($r('app.color.brand'))
+      .padding({ left: 8, right: 8, top: 3, bottom: 3 })
+      .borderRadius(9)
+      .border({ width: 1, color: $r('app.color.brand') })
+  }
+
+  @Builder
+  detailRow(label: string, value: string) {
+    Row({ space: 12 }) {
+      Text(label)
+        .fontSize(14)
+        .fontColor($r('app.color.text_secondary'))
+        .width(56)
+      Text(value)
+        .fontSize(15)
+        .fontColor($r('app.color.text_primary'))
+        .textAlign(TextAlign.End)
+        .layoutWeight(1)
+    }
+    .width('100%')
+  }
+
+  @Builder
+  detailSheet() {
+    Column({ space: 12 }) {
+      if (this.detailEvent !== null) {
+        // 标题区：色点 + 标题 + 徽标紧跟标题 + 自绘关闭按钮（与标题同行）
+        Row({ space: 8 }) {
+          Circle()
+            .fill(this.detailEvent.color)
+            .width(12)
+            .height(12)
+          Text(this.detailEvent.title === '' ? '(无标题)' : this.detailEvent.title)
+            .fontSize(19)
+            .fontWeight(FontWeight.Bold)
+            .fontColor($r('app.color.text_primary'))
+            .maxLines(1)
+            .textOverflow({ overflow: TextOverflow.Ellipsis })
+            .constraintSize({ maxWidth: '58%' })
+          if (this.detailEvent.isSystem) {
+            this.detailTag('系统')
+          } else if (!this.detailEvent.writable) {
+            this.detailTag('只读')
+          }
+          Blank()
+          Text('✕')
+            .fontSize(16)
+            .fontColor($r('app.color.text_secondary'))
+            .width(30)
+            .height(30)
+            .textAlign(TextAlign.Center)
+            .borderRadius(15)
+            .backgroundColor($r('app.color.card_bg'))
+            .onClick(() => {
+              this.detailShow = false;
+            })
+        }
+        .width('100%')
+
+        Scroll() {
+          Column({ space: 12 }) {
+            // 时间卡片
+            Column({ space: 12 }) {
+              if (this.detailEvent.isAllDay && !this.spansDays(this.detailEvent)) {
+                this.detailRow('时间', `全天 ${this.fmtDateCn(this.detailEvent.startTime)}`)
+              } else {
+                this.detailRow('开始', this.detailStartText(this.detailEvent))
+                Divider().color($r('app.color.shadow_color'))
+                this.detailRow('结束', this.detailEndText(this.detailEvent))
+              }
+            }
+            .width('100%')
+            .padding(14)
+            .borderRadius(12)
+            .backgroundColor($r('app.color.card_bg'))
+
+            // 日历本 / 重复
+            Column({ space: 12 }) {
+              Row({ space: 12 }) {
+                Text('日历本')
+                  .fontSize(14)
+                  .fontColor($r('app.color.text_secondary'))
+                  .width(56)
+                Text(this.detailEvent.calName === '' ? '-' : this.detailEvent.calName)
+                  .fontSize(15)
+                  .fontColor($r('app.color.text_primary'))
+                  .textAlign(TextAlign.End)
+                  .layoutWeight(1)
+              }
+              .width('100%')
+              if (this.detailEvent.recurring) {
+                Divider().color($r('app.color.shadow_color'))
+                this.detailRow('重复', '重复日程')
+              }
+            }
+            .width('100%')
+            .padding(14)
+            .borderRadius(12)
+            .backgroundColor($r('app.color.card_bg'))
+
+            // 地点：点击打开高德地图导航
+            if (this.detailEvent.location !== '') {
+              Row({ space: 8 }) {
+                Column({ space: 4 }) {
+                  Text('地点')
+                    .fontSize(14)
+                    .fontColor($r('app.color.text_secondary'))
+                  Text(this.detailEvent.location)
+                    .fontSize(15)
+                    .fontColor($r('app.color.brand'))
+                }
+                .alignItems(HorizontalAlign.Start)
+                .layoutWeight(1)
+                Text('导航 ›')
+                  .fontSize(14)
+                  .fontColor($r('app.color.brand'))
+                  .fontWeight(FontWeight.Medium)
+              }
+              .width('100%')
+              .padding(14)
+              .borderRadius(12)
+              .backgroundColor($r('app.color.card_bg'))
+              .onClick(() => {
+                if (this.detailEvent !== null) {
+                  this.openInAmap(this.detailEvent.location);
+                }
+              })
+            }
+
+            // 备注
+            if (this.detailEvent.description !== '') {
+              Column({ space: 8 }) {
+                Text('备注')
+                  .fontSize(14)
+                  .fontColor($r('app.color.text_secondary'))
+                Text(this.detailEvent.description)
+                  .fontSize(15)
+                  .fontColor($r('app.color.text_primary'))
+                  .width('100%')
+              }
+              .alignItems(HorizontalAlign.Start)
+              .width('100%')
+              .padding(14)
+              .borderRadius(12)
+              .backgroundColor($r('app.color.card_bg'))
+            }
+          }
+          .width('100%')
+        }
+        .scrollBar(BarState.Auto)
+        .align(Alignment.Top)
+        .layoutWeight(1)
+      }
+    }
+    .width('100%')
+    .height('100%')
+    .padding({ left: 16, right: 16, top: 16, bottom: 16 })
+    .alignItems(HorizontalAlign.Start)
   }
 
   private addEvent(): void {
@@ -520,6 +785,12 @@ struct Index {
     }
     .width('100%')
     .height('100%')
+    .bindSheet($$this.detailShow, this.detailSheet(), {
+      height: 540,
+      dragBar: true,
+      showClose: false, // 关闭按钮自绘在标题行右侧，避免系统按钮压住徽标
+      backgroundColor: $r('app.color.page_bg')
+    })
   }
 
   @Builder

entry/src/main/module.json5

@@ -47,6 +47,26 @@
           ],
           "when": "inuse"
         }
+      },
+      {
+        "name": "ohos.permission.LOCATION",
+        "reason": "$string:perm_location",
+        "usedScene": {
+          "abilities": [
+            "EntryAbility"
+          ],
+          "when": "inuse"
+        }
+      },
+      {
+        "name": "ohos.permission.APPROXIMATELY_LOCATION",
+        "reason": "$string:perm_location_approx",
+        "usedScene": {
+          "abilities": [
+            "EntryAbility"
+          ],
+          "when": "inuse"
+        }
       }
     ],
     "deliveryWithInstall": true,

entry/src/main/resources/base/element/string.json

@@ -24,6 +24,14 @@
       "name": "perm_read_whole_calendar",
       "value": "读取所有日历账户的日程，用于在日历中统一展示"
     },
+    {
+      "name": "perm_location",
+      "value": "将日程中的地址转换为坐标，用于发起高德地图导航"
+    },
+    {
+      "name": "perm_location_approx",
+      "value": "将日程中的地址转换为坐标，用于发起高德地图导航"
+    },
     {
       "name": "card_ability_desc",
       "value": "同步日历服务卡片"