标题：利用React Native Gl Image Filters轻松实现图片滤镜效果

import React from 'react';
import { StyleSheet, View, Image } from 'react-native';
import { RNCamera } from 'react-native-camera';
import { RNImageFilter } from 'react-native-gl-image-filters';
 
export default class App extends React.Component {
  render() {
    return (
      <View style={styles.container}>
        <RNCamera
          style={styles.preview}
          type={RNCamera.Constants.Type.back}
          androidCameraPermissionOptions={{
            title: 'Permission to use camera',
            message: 'We need your permission to use your camera.',
            buttonPositive: 'Ok',
            buttonNegative: 'Cancel',
          }}
          androidRecordAudioPermissionOptions={{
            title: 'Permission to use audio',
            message: 'We need your permission to use your audio.',
            buttonPositive: 'Ok',
            buttonNegative: 'Cancel',
          }}
        >
          {({ camera, status }) => {
            if (status !== 'NOT_AUTHORIZED') {
              return (
                <RNImageFilter
                  image={<Image style={styles.capturedImage} source={{ uri: camera.getURIForImage() }} />}
                  filter={RNImageFilter.filters.CIBumpDistortion}
                  intensity={1.5}
                  radius={1.0}
                  shaderModifiers={`
                    float scale = 1.0 + ((intensity - 1.0) * 0.5);
                    vec2 center = vec2(0.5);
                    vec2 textureCoordinateToUse = vec2(textureCoordinate) + distanceFromCenter * ((intensity - 1.0) * 0.5);
                  `}
                />
              );
            }
            return (
              <View style={styles.authorization}>
                <Text>Authorization Status: {status}</Text>
              </View>
            );
          }}
        </RNCamera>
      </View>
    );
  }
}
 
const styles = StyleSheet.create({
  container: {
    flex: 1,
  },
  preview: {
    flex: 1,
    justifyContent: 'flex-end',
    alignItems: 'center',
  },
  capturedImage: {
    flex: 1,
    resizeMode: 'cover',
  },
  authorization: {
    flex: 1,
    justifyContent: 'center',
    alignItems: 'center',
  },
});

这段代码示例展示了如何在React Native应用中使用RNCamera和RNImageFilter库来实现拍照时的滤镜效果。它首先导入必要的组件和样式，然后定义了一个名为App的组件，该组件使用RNCamera组件来提供相机预览，并在拍照时使用RNImageFilter来应用滤镜效果。这个例子使用了\`