时间戳

首页 > 解决方案 > 如何识别选择的单选按钮值 React Native？

javascript - 如何识别选择的单选按钮值 React Native？

问题描述

我希望控制台为不同的单选按钮打印一个独特的文本。例如，如果用户选择值为 label1 的单选按钮，则控制台应打印“您选择了 label1”。该文件包含三个单选按钮及其来自不同文件的值。当按下按钮时，我将用户选择保存在异步存储中。这是我的文件：

import RadioButtonRN from 'radio-buttons-react-native';
import AsyncStorage from '@react-native-async-storage/async-storage';
import {Questions} from '../questions/questions_user'

export const ScreenOne = ({ }) => {
  const navigation = useNavigation();

  const question3 = Questions[2].question;
  const label1 = Questions[2].answers[0].answer;
  const label2 = Questions[2].answers[1].answer;
  const label3 = Questions[2].answers[2].answer;

  const [radioBtn, setSelectedRadioBtn] = useState('')

  const saveValue = () => {
    if (radioBtn) {
      AsyncStorage.setItem('radioValue', JSON.stringify(radioBtn))
      setSelectedRadioBtn('');
    } 
  }

  const data = [
    {
      label: label1
    },
    {
      label: label2
    },
    {
      label: label3
    }
  ];

  return (
    <ScreenContainer>
        <RadioButtonRN
          data={data}
          selectedBtn={(e) => setSelectedRadioBtn(e)}
          box={false}
          circleSize={14}
          activeColor={'#6175CF'}
          style={styles.radio}
        />
      </InputArea>
          <Button onPress={saveValue} />
    </ScreenContainer>
  )
}

export default ScreenOne

标签： javascriptreactjsreact-nativeasyncstorage

解决方案

import AsyncStorage from '@react-native-async-storage/async-storage';
import {Questions} from '../questions/questions_user'

export const ScreenOne = ({ }) => {
  const navigation = useNavigation();

  const question3 = Questions[2].question;
  const label1 = Questions[2].answers[0].answer;
  const label2 = Questions[2].answers[1].answer;
  const label3 = Questions[2].answers[2].answer;

  const [radioBtn, setSelectedRadioBtn] = useState('')

  const saveValue = () => {
    if (radioBtn) {
      AsyncStorage.setItem('radioValue', JSON.stringify(radioBtn))
      setSelectedRadioBtn('');
    } 
  }

  const data = [
    {
      label: label1
    },
    {
      label: label2
    },
    {
      label: label3
    }
  ];

  return (
    <ScreenContainer>
        <RadioButtonRN
          data={data}
          selectedBtn={(e) => setSelectedRadioBtn(e)}
          box={false}
          circleSize={14}
          activeColor={'#6175CF'}
          style={styles.radio}
        />
      </InputArea>
          <Button onPress={saveValue} />

       <Text>{radioBtn.label}</Text>

    </ScreenContainer>
  )
}

export default ScreenOne;

推荐阅读