Share photo to Instagram from React-Native app built with Expo SDK

Question

I want my react-native app to share a photo with Instagram. I know it\'s possible when writing in native code to open up Instagram\'s filter screen with a specified photo.

Answer 1

Here is how to share a file from a remote url: download it first! :)

  const downloadPath = FileSystem.cacheDirectory + 'fileName.jpg';
  // 1 - download the file to a local cache directory
  const { uri: localUrl } = await FileSystem.downloadAsync(remoteURL, downloadPath);
  // 2 - share it from your local storage :)
  Sharing.shareAsync(localUrl, {
    mimeType: 'image/jpeg',            // Android
    dialogTitle: 'share-dialog title', // Android and Web
    UTI: 'image/jpeg'                  // iOS
  });