Expo : content:// uri FileSystem.copyAsync 在其他应用程序中打开文件时，Android 中的权限被拒绝

Question

当用户想要打开 pdf 时，我想使用我的应用程序“打开”，因此我在清单 xml 中添加了意图过滤器，并创建了

+native-intent.ts

来获取 FileProvider 中的 pdf 路径。从“我的文件”打开时它可以工作，“我的文件”是 Android 中默认的本机文件管理器。

但是当我从其他应用程序（例如 Kakaotalk 或 Slack）打开文件并将该

content://

文件复制到缓存目录中的

file://

时，会出现以下错误。

我试图让原生模块来调用

currentActivity.grantUriPermission(currentActivity.packageName, uri, Intent.FLAG_GRANT_READ_URI_PERMISSION)

，但它不起作用（java.lang.SecurityException：UID 10874没有内容权限）

发生错误的代码

async function copySharedPathToUri(contentUri: string) {
  const destinationUri = FileSystem.cacheDirectory + "tempFile";
  await FileSystem.copyAsync({
    from: contentUri,
    to: destinationUri,
  });
  return destinationUri;
}

错误

Error uploading file: [Error: Call to function 'ExponentFileSystem.copyAsync' has been rejected.
→ Caused by: java.lang.SecurityException: Permission Denial: reading androidx.core.content.FileProvider uri content://com.kakao.talk.FileProvider/external_files/emulated/0/Android/data/com.kakao.talk/contents/MTg=/2412.10468v1.pdf from pid=25200, uid=10858 requires the provider be exported, or grantUriPermission()]

+native-intent.ts

export function redirectSystemPath({
  path,
  initial,
}: {
  path: string;
  initial: string;
}) {
  try {
    console.log("redirectSystemPath", path, initial);
    return `/?sharedPath=${encodeURIComponent(path)}`;
  } catch {
    return "/";
  }
}

这些是依赖项

"dependencies": {
    "@expo-google-fonts/inter": "^0.2.3",
    "@expo/vector-icons": "^14.0.2",
    "@react-native-async-storage/async-storage": "1.23.1",
    "@react-navigation/native": "^7.0.0",
    "axios": "^1.7.7",
    "cookie": "^1.0.1",
    "date-fns": "^4.1.0",
    "expo": "~52.0.19",
    "expo-apple-authentication": "~7.1.2",
    "expo-build-properties": "~0.13.1",
    "expo-constants": "~17.0.3",
    "expo-dev-client": "~5.0.6",
    "expo-document-picker": "~13.0.1",
    "expo-file-system": "~18.0.6",
    "expo-font": "~13.0.1",
    "expo-image": "~2.0.3",
    "expo-linking": "~7.0.3",
    "expo-router": "~4.0.13",
    "expo-share-intent": "^3.1.1",
    "expo-splash-screen": "~0.29.18",
    "expo-status-bar": "~2.0.0",
    "expo-system-ui": "~4.0.6",
    "expo-web-browser": "~14.0.1",
    "nativewind": "^4.1.23",
    "patch-package": "^8.0.0",
    "react": "18.3.1",
    "react-dom": "18.3.1",
    "react-native": "0.76.5",
    "react-native-gesture-handler": "~2.20.2",
    "react-native-reanimated": "~3.16.1",
    "react-native-safe-area-context": "4.12.0",
    "react-native-screens": "^4.0.0",
    "react-native-web": "~0.19.10",
    "react-native-webview": "13.12.5",
    "tailwindcss": "^3.4.14"
  },

这是 xml 的一部分

<intent-filter>
        <action android:name="android.intent.action.VIEW"/>
        <category android:name="android.intent.category.DEFAULT"/>
        <category android:name="android.intent.category.BROWSABLE"/>
        <data android:scheme="moonlight"/>
        <data android:scheme="com.corca.moonlight"/>
        <data android:scheme="exp+moonlight"/>
      </intent-filter>

已经花费了超过24小时，请帮助我:)

Answer 1

也许你可以尝试请求许可

const downloadsUri = FileSystem.StorageAccessFramework.getUriForDirectoryInRoot('你需要的目录')

  const permissions =
    await FileSystem.StorageAccessFramework.requestDirectoryPermissionsAsync(
      downloadsUri
    )