使用js react原生获得Android的触摸压力

import React, { Component } from 'react';
import { View, Text, PanResponder } from 'react-native';

class TouchPressure extends Component {
  constructor(props) {
    super(props);
    this.state = {
      pressure: 0,
    };
    this._panResponder = PanResponder.create({
      onStartShouldSetPanResponder: () => true,
      onPanResponderMove: (event, gestureState) => {
        const pressure = event.nativeEvent.force || 0;
        this.setState({ pressure });
      },
      onPanResponderRelease: () => {
        this.setState({ pressure: 0 });
      },
    });
  }

  render() {
    return (
      <View
        style={{ flex: 1, justifyContent: 'center', alignItems: 'center' }}
        {...this._panResponder.panHandlers}
      >
        <Text>Touch Pressure: {this.state.pressure}</Text>
      </View>
    );
  }
}

export default TouchPressure;