如何在React Native中设置单击或画笔响应中的图像缩放

npm install react-native-image-zoom --save

import React from 'react';
import { View, Image, TouchableOpacity, PanResponder, Animated } from 'react-native';
import ImageZoom from 'react-native-image-zoom';

class ZoomableImage extends React.Component {
  constructor(props) {
    super(props);

    this.state = {
      scale: new Animated.Value(1),
    };

    this.panResponder = PanResponder.create({
      onMoveShouldSetPanResponder: () => true,
      onPanResponderMove: Animated.event([
        null,
        { dx: 0, dy: 0, scale: this.state.scale },
      ]),
      onPanResponderRelease: () => {
        // 处理手势释放事件
      },
    });
  }

  render() {
    return (
      <View>
        <ImageZoom
          cropWidth={Dimensions.get('window').width}
          cropHeight={Dimensions.get('window').height}
          imageWidth={200}
          imageHeight={200}
          {...this.panResponder.panHandlers}
        >
          <Animated.Image
            source={this.props.source}
            style={{
              width: 200,
              height: 200,
              transform: [{ scale: this.state.scale }],
            }}
          />
        </ImageZoom>
      </View>
    );
  }
}

class App extends React.Component {
  render() {
    return (
      <View>
        <ZoomableImage source={require('./path/to/image.jpg')} />
      </View>
    );
  }
}