Image stored in react-native-fs doesnt show

I'm trying to save an image to document directory (instead of cache) using react native and react-native-fs library, but instead I get a blank photo.

const localPath = (image) => {
    console.log("Cache directory path is ", image)
    const fileName = image.split('/').pop();
    console.log('Filename is ',fileName)
    const newPath =  'file://' + RNFS.DocumentDirectoryPath + '/' + fileName;
    console.log(newPath)

    // write the file
    RNFS.writeFile(newPath, image, 'base64')
      .then((success) => {
        console.log('IMG WRITTEN!');
        console.log(newPath)
      })
      .catch((err) => {
        console.log(err.message);
      });
    return newPath
  }

So I want to use this newPath

<Image style={styles.image} source={{ uri: newPath }} />

but a blank photo appears..... If I pass the original path, then the photo is displayed.

If image is a path to a file just use the copyFile method

const localPath = (image) => {
    console.log('Cache directory path is ', image)
    const fileName = image.split('/').pop();
    console.log('Filename is ', fileName)
    const newPath = `${RNFS.DocumentDirectoryPath}/${fileName}`; // You don't really need the `'file://` prefix
    console.log(newPath);

    // COPY the file
    RNFS.copyFile(image, newPath)
      .then((success) => {
        console.log('IMG COPIED!');
        console.log(newPath);
      })
      .catch((err) => {
        console.log(err.message);
      });

    return newPath
  }

There's also a moveFile that you can use to move the file instead of copying

writeFile is used to write content to a file

Note

The function you use to copy the image and return the newPath is not async - it would return the newPath immediately - possibly before the image is copied to the document directory - this might cause a problem if the <Image> tries to load it before the file is actually there.

I would only return the newPath after the image is actually copied

const localPath = async (image) => {
  const newPath = `${RNFS.DocumentDirectoryPath}/${fileName}`;

  await RNFS.copyFile(image, newPath);

  return newPath;
}

// usage
const uri = await localPath(image);