如何显示微调器，直到组件挂载在React Native中？

import React, { Component } from 'react';
import { Slider } from 'react-native';

class MyComponent extends Component {
  state = {
    value: 0,
  };

  componentDidMount() {
    // 在组件挂载后，设置一个定时器来更新微调器的值
    this.timer = setInterval(() => {
      this.setState(prevState => ({ value: prevState.value + 1 }));
    }, 1000);
  }

  componentWillUnmount() {
    // 在组件卸载前清除定时器
    clearInterval(this.timer);
  }

  render() {
    return (
      <Slider
        value={this.state.value}
        minimumValue={0}
        maximumValue={100}
        step={1}
        onValueChange={value => this.setState({ value })}
      />
    );
  }
}

export default MyComponent;