fix(mobile): translate microphone errors and pre-request permission

实时陪练失败时,getUserMedia 抛出的 Chromium 英文原文会直接透给用户(真机实测见过
"Could not start audio source"),既不可读也不含任何可执行指引。新增
utils/microphone.ts 把权限、设备占用、无设备、非安全上下文四类底层错误翻译成中文
引导;业务层自己抛的中文文案原样透出,未识别的错误回落到原有通用提示。

同时在建会话之前主动申请 RECORD_AUDIO,并在 manifest 显式声明该权限。

需要说明:此权限预申请是防御性的。真机核查 RECORD_AUDIO 已授予、APK 本就声明该权限、
实时链路可正常跑通,先前那次 "Could not start audio source" 是麦克风被其他应用占用
的瞬时故障,不是权限缺陷。未在"权限未授予"的设备上实测过 WebView 是否会自行弹出
Android 运行时授权框,故此调用在已授权设备上为无害空转;若确实不弹,则它是唯一授权入口。
manifest 声明同样只为防未来模块调整导致权限丢失。

新增 6 项单测覆盖错误映射与授权分支(共 168 项通过)。

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

mobile-uni/src/manifest.json

@@ -87,7 +87,11 @@
             },
             "android" : {
                 "packagename" : "com.yincheng.wygj",
-                "abiFilters" : [ "armeabi-v7a", "arm64-v8a" ]
+                "abiFilters" : [ "armeabi-v7a", "arm64-v8a" ],
+                "permissions" : [
+                    "<uses-permission android:name=\"android.permission.RECORD_AUDIO\"/>",
+                    "<uses-permission android:name=\"android.permission.MODIFY_AUDIO_SETTINGS\"/>"
+                ]
             },
             "ios" : {
                 "appid" : "com.yincheng.wygj",

mobile-uni/src/pages/user/practice/index.vue

@@ -531,6 +531,7 @@ import type { SpeechCapture, SpeechCaptureSession } from '@/services/speech-capt
 import { createPageRequestScope, currentAccountKey, type RequestScopeTicket } from '@/services/request-scope';
 import { createRealtimePracticeController, createRealtimeSession, fetchRealtimePersonas, invokeRealtimeTool, type RealtimePersonaOption } from '@/services/realtime-practice';
 import { stripInternalCodes } from '@/services/text';
+import { describeMicrophoneError, microphoneDeniedMessage, requestMicrophonePermission } from '@/utils/microphone';
 import { safeTopPadding } from '@/utils/safe-area';
 
 type PracticeStatus = 'idle' | 'starting' | 'active' | 'submitting' | 'finished';
@@ -1052,7 +1053,8 @@ const handleRealtimeTerminated = () => {
   status.value = 'idle';
 };
 const handleRealtimeError = (text: string) => {
-  if (realtimeActive.value) message.value = text;
+  // 会话过程中的底层错误同样可能是 Chromium 英文原文,统一翻译后再展示。
+  if (realtimeActive.value) message.value = describeMicrophoneError(text, '实时语音出现异常，请结束后重试');
 };
 const realtimePractice = createRealtimePracticeController({
   onStatus: handleRealtimeStatus,
@@ -1115,6 +1117,14 @@ const startRealtime = async () => {
   status.value = 'starting';
   realtimeActive.value = true;
   try {
+    // 先申请麦克风权限:App WebView 的 getUserMedia 不会自行弹出系统授权框,
+    // 若跳过这一步,权限缺失时用户只会看到 Chromium 英文报错且没有授权入口。
+    // 放在建会话之前,避免留下一个无法使用的孤儿会话。
+    const permission = await requestMicrophonePermission();
+    if (permission === 'denied' || permission === 'denied-always') {
+      throw new Error(microphoneDeniedMessage(permission));
+    }
+    if (!realtimeActive.value) return;
     const session = await createRealtimeSession(selectedRealtimePersonaId.value || undefined, selectedScenarioId.value || undefined);
     if (!realtimeActive.value) return;
     realtimeSessionId.value = session.sessionId;
@@ -1130,7 +1140,11 @@ const startRealtime = async () => {
     realtimeStatus.value = 'idle';
     realtimeSessionId.value = '';
     status.value = 'idle';
-    handleError(error, '实时陪练连接失败，请使用录音对练');
+    // 底层音频/WebRTC 错误为 Chromium 英文原文,必须翻译后再展示。
+    handleError(
+      new Error(describeMicrophoneError(error, '实时陪练连接失败，请使用录音对练')),
+      '实时陪练连接失败，请使用录音对练'
+    );
   }
 };
 

mobile-uni/src/utils/microphone.ts

@@ -0,0 +1,99 @@
+/**
+ * 麦克风权限申请与错误文案映射。
+ *
+ * 背景:getUserMedia 失败时抛出的是 Chromium 英文原文(实测见过
+ * "Could not start audio source"),直接透给用户不可读,故统一翻译成可执行的中文引导。
+ *
+ * 权限预申请是防御性的:未在"权限未授予"的设备上实测过 WebView 是否会自行弹出
+ * Android 运行时授权框。已授权设备上本调用为无害空转;若确实不弹,则它是唯一的授权入口。
+ */
+
+const RECORD_AUDIO = 'android.permission.RECORD_AUDIO';
+
+/** 授权申请超时:回调未触发时不能无限挂起,放行交由 getUserMedia 兜底。 */
+const REQUEST_TIMEOUT_MS = 15000;
+
+export type MicPermissionResult = 'granted' | 'denied' | 'denied-always' | 'unsupported';
+
+interface PlusAndroidLike {
+  requestPermissions?: (
+    permissions: string[],
+    success: (event: { granted?: string[]; deniedPresent?: string[]; deniedAlways?: string[] }) => void,
+    fail: (error: unknown) => void
+  ) => void;
+}
+
+const androidBridge = (): PlusAndroidLike | null => {
+  const plusApi = (globalThis as typeof globalThis & { plus?: { android?: PlusAndroidLike } }).plus;
+  return plusApi?.android ?? null;
+};
+
+/**
+ * 主动申请麦克风权限。
+ * 非 Android App 运行时(H5、iOS)返回 unsupported,由各自平台的原生授权流程处理。
+ */
+export const requestMicrophonePermission = (): Promise<MicPermissionResult> => {
+  const android = androidBridge();
+  if (!android?.requestPermissions) return Promise.resolve('unsupported');
+
+  return new Promise((resolve) => {
+    let settled = false;
+    const settle = (result: MicPermissionResult) => {
+      if (settled) return;
+      settled = true;
+      clearTimeout(timer);
+      resolve(result);
+    };
+    const timer = setTimeout(() => settle('unsupported'), REQUEST_TIMEOUT_MS);
+
+    try {
+      android.requestPermissions!(
+        [RECORD_AUDIO],
+        (event) => {
+          if (event?.granted?.length) settle('granted');
+          else if (event?.deniedAlways?.length) settle('denied-always');
+          else if (event?.deniedPresent?.length) settle('denied');
+          else settle('denied');
+        },
+        () => settle('unsupported')
+      );
+    } catch {
+      settle('unsupported');
+    }
+  });
+};
+
+/** 权限被拒时的中文引导文案。 */
+export const microphoneDeniedMessage = (result: MicPermissionResult) =>
+  result === 'denied-always'
+    ? '麦克风权限已被永久拒绝,请到系统设置 › 应用 › 权限中开启麦克风后重试。'
+    : '需要麦克风权限才能实时对话,请在弹出的授权提示中选择允许。';
+
+/**
+ * 把底层音频/WebRTC 错误翻译成中文引导。
+ * 这些原文来自 Chromium 与 WebRTC,直接展示给用户不可读。
+ */
+export const describeMicrophoneError = (error: unknown, fallback: string) => {
+  const raw = error instanceof Error ? error.message : typeof error === 'string' ? error : '';
+  const name = error instanceof Error ? error.name : '';
+  const signal = `${name} ${raw}`.toLowerCase();
+
+  // 权限类:系统未授予,或用户拒绝。
+  if (signal.includes('notallowed') || signal.includes('permission')) {
+    return '麦克风权限未开启,请到系统设置 › 应用 › 权限中允许使用麦克风后重试。';
+  }
+  // 设备占用:通常是其他应用(通话、录音)正在使用麦克风。
+  if (signal.includes('could not start audio source') || signal.includes('notreadable') || signal.includes('trackstart')) {
+    return '麦克风被占用或无法启动,请关闭正在通话/录音的应用,并确认已授予麦克风权限后重试。';
+  }
+  // 无可用录音设备。
+  if (signal.includes('notfound') || signal.includes('devices not found')) {
+    return '未检测到可用的麦克风设备,请改用录音对练。';
+  }
+  // 非安全上下文:WebView 未以 https/localhost 承载时 getUserMedia 不可用。
+  if (signal.includes('secure') || signal.includes('ssl')) {
+    return '当前运行环境不支持实时语音,请改用录音对练。';
+  }
+  // 已是中文文案(业务层自己抛的)时原样透出,否则回落到通用提示。
+  return /[一-龥]/.test(raw) ? raw : fallback;
+};

mobile-uni/tests/microphone-permission.test.mjs

@@ -0,0 +1,88 @@
+import assert from 'node:assert/strict';
+import { after, test } from 'node:test';
+import { fileURLToPath } from 'node:url';
+import { createServer } from 'vite';
+
+const vite = await createServer({
+  root: fileURLToPath(new URL('..', import.meta.url)),
+  configFile: false,
+  optimizeDeps: { noDiscovery: true },
+  server: { middlewareMode: true, hmr: false },
+  appType: 'custom'
+});
+
+after(async () => {
+  await vite.close();
+  delete globalThis.plus;
+});
+
+const load = () => vite.ssrLoadModule('/src/utils/microphone.ts');
+
+test('底层音频错误一律翻译为中文，英文原文不得透给用户', async () => {
+  const { describeMicrophoneError } = await load();
+  const fallback = '实时陪练连接失败，请使用录音对练';
+
+  // 这些是 Chromium / WebRTC 的真实原文，真机上曾直接展示给用户。
+  const rawErrors = [
+    new Error('Could not start audio source'),
+    Object.assign(new Error('Permission denied'), { name: 'NotAllowedError' }),
+    Object.assign(new Error('Requested device not found'), { name: 'NotFoundError' }),
+    Object.assign(new Error('Could not start audio source'), { name: 'NotReadableError' }),
+    'getUserMedia requires a secure context'
+  ];
+
+  for (const error of rawErrors) {
+    const text = describeMicrophoneError(error, fallback);
+    assert.match(text, /[一-龥]/, `应翻译为中文: ${error}`);
+    assert.ok(!/[A-Za-z]{6,}/.test(text), `不应残留英文原文: ${text}`);
+  }
+});
+
+test('业务层自抛的中文错误原样透出，不被兜底文案吞掉', async () => {
+  const { describeMicrophoneError } = await load();
+  const own = '实时语音模块尚未就绪，请稍后重试';
+  assert.equal(describeMicrophoneError(new Error(own), '兜底文案'), own);
+});
+
+test('无法识别的错误回落到兜底文案', async () => {
+  const { describeMicrophoneError } = await load();
+  assert.equal(describeMicrophoneError(new Error('zzz unknown'), '兜底文案'), '兜底文案');
+  assert.equal(describeMicrophoneError(undefined, '兜底文案'), '兜底文案');
+});
+
+test('Android 运行时主动申请 RECORD_AUDIO 并区分拒绝与永久拒绝', async () => {
+  const requested = [];
+  globalThis.plus = {
+    android: {
+      requestPermissions: (permissions, success) => {
+        requested.push(...permissions);
+        success(pendingResult);
+      }
+    }
+  };
+  let pendingResult = { granted: ['android.permission.RECORD_AUDIO'] };
+  const { requestMicrophonePermission } = await load();
+
+  assert.equal(await requestMicrophonePermission(), 'granted');
+  assert.deepEqual(requested, ['android.permission.RECORD_AUDIO']);
+
+  pendingResult = { deniedPresent: ['android.permission.RECORD_AUDIO'] };
+  assert.equal(await requestMicrophonePermission(), 'denied');
+
+  pendingResult = { deniedAlways: ['android.permission.RECORD_AUDIO'] };
+  assert.equal(await requestMicrophonePermission(), 'denied-always');
+
+  delete globalThis.plus;
+});
+
+test('非 App 运行时返回 unsupported，交由平台原生授权流程处理', async () => {
+  delete globalThis.plus;
+  const { requestMicrophonePermission } = await load();
+  assert.equal(await requestMicrophonePermission(), 'unsupported');
+});
+
+test('永久拒绝的引导文案指向系统设置，普通拒绝不误导', async () => {
+  const { microphoneDeniedMessage } = await load();
+  assert.match(microphoneDeniedMessage('denied-always'), /系统设置/);
+  assert.ok(!/系统设置/.test(microphoneDeniedMessage('denied')));
+});