更新onChangeText函數中數組哈希的TextInput值

Question

  constructor(props) {
   super(props);
    this.state = {
     answers: props.element.answers_data.map((answer, index) => {
     return answer;
    }
  })

     <TextInput
      value = {this.state.answers[index].answer_text}
     onChangeText={(answer_text) => {
              this.setState({
                answers: [
                    ...this.state.answers.slice(0, index),
                    {answer: {answer_text}},
                    ...this.state.answers.slice(index + 1, 
                    this.state.answers.length)
                ]
              });
            }} 
       />

我的答案數據結構就像= 0：{id：799，answer_text：“helloas fast”百分比：0}

我想更新答案文本並將其存儲在this.state.answers中，但是當我在textinput上寫文本並更新它時，我只得到hash的answer_text，我想要所有id，answer_text，哈希百分比。 所以，我需要建議。

提前致謝。

Answer 1

你沒有很好地處理你的數組數據。 您可以保留其結構，也可以使用answers_data.map將它們轉換為字符串。

選項一的完整代碼：

constructor(props) {
  super(props);
  this.state = {
    answers: props.element.answers_data.map((answer, index) => {
      return { ...answer };
    })
  }
}

<TextInput
  value = {this.state.answers[index].answer_text}
  onChangeText={(answer_text) => {
          this.setState({
            answers: [
                ...this.state.answers.slice(0, index),
                { ...this.state.answers[index], answer_text },
                ...this.state.answers.slice(index + 1, this.state.answers.length)
            ]
          });
        }} 
 />

備選方案二的完整守則：

constructor(props) {
  super(props);
  this.state = {
    answers: props.element.answers_data.map((answer, index) => {
      return answer.answer_text;
    })
  }
}

<TextInput
  value = {this.state.answers[index]}
  onChangeText={(answer_text) => {
          this.setState({
            answers: [
                ...this.state.answers.slice(0, index),
                answer_text,
                ...this.state.answers.slice(index + 1, this.state.answers.length)
            ]
          });
        }} 
 />