如何将捕获的图像保存到react native中的应用程序文件夹？

npm install react-native-camera --save

import { RNCamera } from 'react-native-camera';

<RNCamera
  ref={ref => {
    this.camera = ref;
  }}
  style={styles.camera}
  type={RNCamera.Constants.Type.back}
  captureAudio={false}
/>

saveImage = async () => {
  if (this.camera) {
    const options = { quality: 0.5, base64: true };
    const data = await this.camera.takePictureAsync(options);
    const imagePath = `${RNFS.DocumentDirectoryPath}/image.jpg`;
    RNFS.writeFile(imagePath, data.base64, 'base64')
      .then(() => {
        console.log('Image saved successfully.');
      })
      .catch(error => {
        console.log('Error saving image: ', error);
      });
  }
};

<Button title="Save Image" onPress={this.saveImage} />