var Platform = require('react-native').Platform;
var ImagePicker = require('react-native-image-picker');

// More info on all the options is below in the README...just some common use cases shown here
var options = {
  title: 'Select Avatar',
  customButtons: [
    {name: 'fb', title: 'Choose Photo from Facebook'},
  ],
  storageOptions: {
    skipBackup: true,
    path: 'images'
  }
};

/**
 * The first arg is the options object for customization (it can also be null or omitted for default options),
 * The second arg is the callback which sends object: response (more info below in README)
 */
ImagePicker.showImagePicker(options, (response) => {
  console.log('Response = ', response);

  if (response.didCancel) {
    console.log('User cancelled image picker');
  }
  else if (response.error) {
    console.log('ImagePicker Error: ', response.error);
  }
  else if (response.customButton) {
    console.log('User tapped custom button: ', response.customButton);
  }
  else {
    // You can display the image using either data...
    const source = {uri: 'data:image/jpeg;base64,' + response.data, isStatic: true};

    // or a reference to the platform specific asset location
    if (Platform.OS === 'ios') {
      const source = {uri: response.uri.replace('file://', ''), isStatic: true};
    } else {
      const source = {uri: response.uri, isStatic: true};
    }

    this.setState({
      avatarSource: source
    });
  }
});

<Image source={this.state.avatarSource} style={styles.uploadAvatar} />

// Launch Camera:
ImagePicker.launchCamera(options, (response)  => {
  // Same code as in above section!
});

// Open Image Library:
ImagePicker.launchImageLibrary(options, (response)  => {
  // Same code as in above section!
});