如何获取React Native InputAccessoryView的NativeID

我正在跟踪 InputAccessoryView 在这里: https://facebook.github.io/react-native/blog/2018/03/22/building-input-accessory-view-for-react-native.html

带代码:

export default class Debug extends Component {
  constructor(props) {
    super(props);
    this.state = {text: 'Hello world from debug'};
  }

  render() {

    const inputAccessoryViewID = "uniqueID";

    const accesory = (
        <InputAccessoryView nativeID={inputAccessoryViewID}>
          <Button
            onPress={() => this.setState({text: 'You didnt enter the magic word'})}
            title="Reset Text"
          />
        </InputAccessoryView>
    )

    return (
        <View>
            <ScrollView keyboardDismissMode="interactive">
              <TextInput
                style={{
                  padding: 10,
                  paddingTop: 50,
                }}
                inputAccessoryViewID={inputAccessoryViewID}
                onChangeText={text => this.setState({text})}
                value={this.state.text}
              />
            </ScrollView>

            {accesory}

        </View>
    );
  }
}

但是医生没有解释我在哪里能拿到这个身份证 uniqueID . 我能在Xcode中找到它吗?