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undefined不是'new Animated.valueXY()'中的构造函数

我正在尝试实施刷卡.有人可以帮我解决这个错误

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

class AlbumDetail extends Component {
 constructor(props) {
 super(props);
 console.log('print log 1');
 const position = new Animated.valueXY();
 console.log('print log 2');

 const panResponder = PanResponder.create({
  onStartShouldSetPanResponder: () => true,
  onPanResponderMove: (event, gesture) => {
    position.setValue({ x: gesture.dx, y: gesture.dy });
  },
  onPanResponderRelease: (event, gesture) => {
    if (gesture.dx > SWIPE_THRESHOLD) {
      forcedSwipe('right');
    } else if (gesture.dx < -SWIPE_THRESHOLD) {
      forcedSwipe('left');
    } else {
      this.resetPosition();
    } …
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javascript reactjs react-native

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