On Instagram, you can apply filters easily and get the desired result quickly. It has great functionality to modify photos with better output. Some clients may demand similar functionality in their custom react native applications. They required Instagram-like filters in the custom app.

In context to the situation, we have created a step-by-step guide on how to integrate image editing and filters like Instagram in react native.

Our developers have done extensive research on various libraries for filters in React Native that is available on the web but haven’t found the desired result. So, they have come up with a special guide for building image filters in React Native.

Steps mentioned within the blog can simplify the things that can ease the integration process.

Let’s Get Started!

Table of Contents

Pre-requisite

Nothing much is required here; just make sure that React Native is installed and the project is already created.

Installing React Native and setting it up is a different and simple process. You can get more information on this by visiting here - https://reactnative.dev/

Libraries required to install:

There are 3 major functions one needs in the application – Cropping, Filtering, and Downloading. To perform these functions, our developers have selected the three best libraries to support filters in react native that you need to install.

Image Cropping:

The image cropping allows us to crop the image as per the selected dimensions options and free-form self-adjustable cropping mechanism. It is an interesting part of any mobile app development. We have used Crop Picker Library to get better output. This library also offers video editing functionality.

Image Filter Creation:

We have selected React Native Image Filter Kit to perform the image filter function within the application. Based on the kit, we have created a special code to generate more than 20 filters.

Image downloading:

To share the modified image with the world, one needs to download it to a mobile. This function can be taken care of by React Native Cameraroll Library. Using this library, developers can generate a smooth functionality to save filtered images in iOS and Android photo libraries.

Core Function Development Guide:

Once the libraries are installed, it is time to step ahead and build core functionality. So, let’s step into the coding part and achieve the given milestone.

This is the folder structure we have created to make our work easy to understand.

Creation of folder structure

Now create a folder “ChooseImage”. Add ‘index.jsx’ file. To get the image from the phone gallery, add the below-mentioned code in the ‘index.jsx’ file.

import React, { useState } from 'react';
import {
  Image,
  Alert,
  SafeAreaView,
  StyleSheet,
  Text,
  TouchableOpacity,
  View,
} from 'react-native';
import { launchImageLibrary } from 'react-native-image-picker';
import {
  widthPercentageToDP as wp,
  heightPercentageToDP as hp,
} from 'react-native-responsive-screen';
import Constants from '../../Constants/Constants';
import Button from '../../Components/Button';
import Loader from '../../Components/Loader';
import ImagePicker from 'react-native-image-crop-picker';

const CreatePost = ({ navigation }) => {

  const [thumbnail, setThumbnail] = useState({});
  const [loaderVisible, setLoaderVisible] = useState(false);

  const onChooseImage = async (selectionType) => {


    const options = {
      cameraType: 'back',
      mediaType: selectionType,
      includeBase64: true,
    };
    const result = await launchImageLibrary(options);
    if (!result.didCancel && result.assets) {
      if (selectionType === 'photo') {
        const photoData = {
          uri: result.assets[0].uri,
          type: result.assets[0].type,
          name: result.assets[0].fileName,
        };
        setThumbnail(photoData);
      }
    }
    if (result.errorMessage) console.log('error');
  };

  const handleNextStepClick = async () => {
    if (!thumbnail.length) {
      setLoaderVisible(false);
      if (!Object.keys(thumbnail).length) {
        Alert.alert('Please add thumbnail image');
        return;
      } else {
        return ImagePicker.openCropper({
          includeBase64: true,
          path: thumbnail,
          cropping: false,
          freeStyleCropEnabled: true,
          compressImageQuality: 0.8,
          showCropFrame: true,
          mediaType: 'photo',
        }).then(image => {
          navigation.navigate('FilterScreen', { imageData: image });
        })
      }
    }
  };

  return (
    <SafeAreaView
      style={styles.safeView}>
      <View
        style={styles.imageView}>
        {Object.keys(thumbnail).length ? (
          <>
            <View
              style={styles.insideView}>
              <Image
                source={{ uri: thumbnail?.uri }}
                style={styles.thumbImage}
                resizeMode={'contain'}
              />
            </View>
            <View
              style={styles.editView}>
              <TouchableOpacity
                activeOpacity={0.6}
                onPress={() => onChooseImage('photo')}
                style={{
                  ...styles.addLessonBtnContainer,
                  marginEnd: 7,
                }}>
                <Image
                  source={require('../../Assests/icon_edit.png')}
                  resizeMode="contain"
                  style={styles.editImage}
                />
              </TouchableOpacity>
              <TouchableOpacity
                activeOpacity={0.6}
                onPress={() => setThumbnail({})}
                style={styles.addLessonBtnContainer}>
                <Image
                  source={require('../../Assests/delete.png')}
                  resizeMode="contain"
                  style={styles.editImage}
                />
              </TouchableOpacity>
            </View>
          </>
        ) : (
          <>
            <View style={{ ...styles.pickContainer, }}>
              <TouchableOpacity
                onPress={() => onChooseImage('photo')}
                activeOpacity={0.7}>
                <View style={styles.galleryView}>
                  <Image
                    source={require('../../Assests/Pick.png')}
                    style={styles.galleryImg}
                    resizeMode="contain"
                  />
                </View>
              </TouchableOpacity>
            </View>
            <View
              style={styles.postTextView}>
              <Text style={styles.introText}>
                {Constants.create_post_story}
              </Text>
            </View>
          </>
        )}
      </View>
      <View style={styles.buttonView}>
        <Button
          title={Constants.next}
          onclick={handleNextStepClick}
          style={styles.button_next}
        />
      </View>
      <Loader titleText={''} visible={loaderVisible} />
    </SafeAreaView>
  );
};

const styles = StyleSheet.create({
  button_next: {
    textTransform: 'uppercase',
    fontSize: wp('5%'),
    color: 'white',
    marginHorizontal: wp('7%')
  },
  editView: {
    justifyContent: 'flex-end',
    alignItems: 'center',
    marginTop: wp('5%'),
    alignSelf: 'flex-end',
    display: 'flex',
    flexDirection: 'row',
  },
  imageView: {
    paddingHorizontal: wp('5%'),
    paddingVertical: wp('10%'),
    backgroundColor: '#FFFFFF',
    marginTop: wp('5%'),
    width: wp('100%'),
  },
  insideView: {
    width: '100%',
    justifyContent: 'center',
    alignItems: 'center',
  },
  thumbImage: {
    width: wp('100%'),
    height: wp('80%'),
  },
  editImage: {
    width: wp('4.5%'),
    height: wp('4.5%'),
    tintColor: '#FFFFFF',
  },
  galleryView: {
    height: wp('20%'),
    width: wp('20%'),
    backgroundColor: '#FF701F',
    borderRadius: 40,
    justifyContent: 'center',
    alignItems: 'center'
  },
  galleryImg: {
    height: wp('7%'),
    width: wp('7%'),
    tintColor: 'white'
  },
  postTextView: {
    marginTop: wp('5%'),
  },
  safeView: {
    flex: 1,
    backgroundColor: '#fff',
  },
  buttonView: {
    marginTop: wp('7%'),
    marginBottom: wp('3%')
  },
  pickContainer: {
    borderWidth: 1,
    borderColor: '#DFDFDF',
    marginTop: hp('10%'),
    justifyContent: 'center',
    alignItems: 'center',
    borderStyle: 'dashed',
    width: '100%',
    paddingVertical: wp('7%'),
  },
  addLessonBtnContainer: {
    backgroundColor: '#FF701F',
    borderRadius: 4,
    paddingHorizontal: wp('3%'),
    paddingVertical: wp('2%'),
  },
  introText: {
    textTransform: 'uppercase',
    textAlign: 'center',
    textAlignVertical: 'center',
    color: '#1F1F1F',
    fontSize: wp('5%'),
  },
});

export default CreatePost;

Output

Once you add the above-mentioned code to the 'index.jsx', you can able to see the output as per the screenshot below.

select image

Step 2 - Image Cropping and Resizing

We already added a code in step 1 on the “Next” button. So, when you click on the next crop picker library opens up its UI. And one can resize the image as per their choice as well as can rotate it.

The picker offers various image ratio options for users to pick from. Once the user clicks on the options button, an action sheet view appears. Now the user can select a predefined ratio for cropping.

Output

resize image options

Step 3 - Image Filters Creation

Now the selection and cropping functionality is ready with us. It’s time to add image filter functionality. Now let’s create a new folder and name it “Filter Image”. Once again, create a file “index.jsx” and add the below-mentioned code:

import React, { useRef, useState, useEffect } from 'react';
import {
  widthPercentageToDP as wp,
  heightPercentageToDP as hp,
} from 'react-native-responsive-screen';
import {
  FlatList,
  Image,
  SafeAreaView,
  StyleSheet,
  Text,
  TouchableOpacity,
  ImageBackground,
  View,
} from 'react-native';
import { FILTERS } from '../../Helpers/Filters';
import Button from '../../Components/Button';
import Constants from '../../Constants/Constants';
import { KeyboardAwareScrollView } from 'react-native-keyboard-aware-scroll-view';

const FilterScreen = ({ navigation, route }) => {

  const [selectedFilterIndex, setIndex] = useState(0);
  const [image, SetImage] = useState('')
  const [thumbnail, setThumbnail] = useState({});

  useEffect(() => {
    getImageFromNavigation()
  })

  const getImageFromNavigation = () => {
    if (route?.params?.imageData) {
      setThumbnail(route?.params?.imageData)
    }
  }

  const onExtractImage = ({ nativeEvent }) => {
    SetImage(nativeEvent.uri)
    extractedUri.current = nativeEvent.uri;
  };

  const onSelectFilter = selectedIndex => {
    setIndex(selectedIndex);
  };

  const extractedUri = useRef(thumbnail?.path);

  const handleNextStepClick = async () => {
    if (selectedFilterIndex === 0) {
      navigation.navigate('ViewImage', { imageString: thumbnail })
    } else {
      console.log('goinfFromHere');
      navigation.navigate('ViewImage', { imageString: image })
    }
  };


  const renderFilterComponent = ({ item, index }) => {
    const FilterComponent = item.filterComponent;
    const image = (
      <Image
        style={styles.filterSelector}
        source={{ uri: thumbnail?.path }}
        defaultSource={require('../../Assests/Pick.png')}
      />
    );
    return (
      <TouchableOpacity onPress={() => onSelectFilter(index)}>
        <Text style={styles.filterTitle}>{item.title}</Text>
        <FilterComponent image={image} />
      </TouchableOpacity>
    );
  };

  const SelectedFilterComponent = FILTERS[selectedFilterIndex].filterComponent;

  return (
    <>
      <SafeAreaView
        style={styles.safeView}>
        <ImageBackground
          source={require('../../Assests/image_background.png')}
          style={styles.container}>

          <KeyboardAwareScrollView
            contentContainerStyle={styles.keyboardContainer}
            resetScrollToCoords={{ x: 0, y: 0 }}>

            {selectedFilterIndex === 0 ? (
              <Image
                style={styles.default_Img}
                source={{ uri: thumbnail?.path }}
                resizeMode='contain'
              />
            ) : Object.keys(thumbnail).length && (
              <SelectedFilterComponent
                onExtractImage={onExtractImage}
                extractImageEnabled={true}
                image={
                  <Image
                    style={styles.default_Img}
                    source={{ uri: thumbnail?.path }}
                    resizeMode='contain'
                  />
                }
              />
            )}
            <FlatList
              data={FILTERS}
              keyExtractor={item => item.title}
              showsHorizontalScrollIndicator={false}
              horizontal={true}
              renderItem={renderFilterComponent}
            />
            <View style={styles.buttonView}>
              <Button
                title={Constants.next}
                onclick={handleNextStepClick}
                style={{ textTransform: 'uppercase' }}
              />
            </View>
          </KeyboardAwareScrollView>
        </ImageBackground>
      </SafeAreaView>
    </>
  );
};
const styles = StyleSheet.create({
  default_Img: {
    flex: 1,
    width: wp('100%'),
    height: hp('50%'),
    alignSelf: 'center',
    alignContent: 'center'
  },
  keyboardContainer: {
    width: wp('90%'),
  },
  buttonView: {
    marginTop: wp('7%'),
    marginBottom: wp('3%')
  },
  safeView: {
    flex: 1,
    backgroundColor: '#fff',
  },
  filterSelector: {
    width: 100,
    height: 100,
    margin: 5,
  },
  filterTitle: {
    marginTop: 70,
    fontSize: 12,
    textAlign: 'center',
  },
  container: {
    flex: 1,
    justifyContent: 'center',
    backgroundColor: '#FFFFFF',
    alignItems: 'center',
  },
});
export default FilterScreen;

Output

Now the application has all the filters visible that the user can select and process to the next step.

image filters

Step 4 - Image Saving and Downloading

Without saving/downloading image functionality, your application has no use. As we have implemented all the filters in the previous step, now the time is to add download functionality.

Same as both previous steps, create a folder named “ViewImage” and add “index.jsx” having the below-mentioned code. After implementing this code user can able to save the customized image in the phone gallery.

import React, { useState, useEffect } from 'react';
import {
  View,
  StyleSheet,
  Image,
  Platform,
  PermissionsAndroid
} from 'react-native';
import { CameraRoll } from "@react-native-camera-roll/camera-roll";
import {
  widthPercentageToDP as wp,
  heightPercentageToDP as hp,
} from 'react-native-responsive-screen';
import Constants from '../../Constants/Constants';
import Button from '../../Components/Button';

const ViewImage = ({ route }) => {
  const [thumbnail, setThumbnail] = useState({});
  const [photos, setPhotos] = useState('');

  useEffect(() => {
    getImageFromNavigation()
  })

  const getImageFromNavigation = () => {
    if (route?.params?.imageString) {
      console.log('params-->', route?.params?.imageString);
      setThumbnail(route?.params?.imageString)
      setPhotos(route?.params?.imageString)
    }
  }
  async function hasAndroidPermission() {
    const permission = PermissionsAndroid.PERMISSIONS.WRITE_EXTERNAL_STORAGE;

    const hasPermission = await PermissionsAndroid.check(permission);
    if (hasPermission) {
      return true;
    }

    const status = await PermissionsAndroid.request(permission);
    return status === 'granted';
  }

  async function savePicture() {
    if (Platform.OS === "android" && !(await hasAndroidPermission())) {
      return;
    }
    CameraRoll.save(photos, { type: 'photo' })
  };
  return (
    <View style={styles.container}>
      <Image
        source={{ uri: photos !== '' ? photos : thumbnail?.path }}
        style={styles.imgView}
      />
      <View style={styles.buttonView}>
        <Button
          title={Constants.image_download}
          onclick={savePicture}
          style={{ textTransform: 'uppercase' }}
        />
      </View>
    </View>
  );
};

const styles = StyleSheet.create({
  imgView: {
    width: wp('100%'),
    height: hp('30%'),
    resizeMode: 'contain'
  },
  container: {
    flex: 1,
    alignItems: 'center',
    backgroundColor: '#F5FCFF',
    paddingTop: 30,
    marginVertical: hp('25%')
  },
  buttonView: {
    marginTop: wp('7%'),
    marginBottom: wp('3%'),
    width: wp('80%'),
  },
});

export default ViewImage;

Output

image download

Final Wordings

You’re done with the code.

We hope your code is working as expected. To make your task even easier we have created GitHub Repo at https://github.com/divyeshgohil85/RNImageFilter You can try the running demo app.

This article is based on extensive research done by our authors. They have good experience in react native. They are enthusiastic and aggressive learners to get new things done. If you are looking to hire react native developers, connect with them at The One Technologies.

About Author

Abhineshwar Tripathi

Abhineshwar TripathiAbhineshwar Tripathi started his career journey in 2019 in a React Native app development company.

Currently, he is a Sr. React Native Engineer at The One Technologies.

With the goal of being a full-stack engineer, he enhances his coding ability by solving the coding problem available at hacker rank and git community. He loves to solve complex issues while taking care of modernizing and optimizing. He loves traveling, and bike road trips.

Swapnil Panchal

Swapnil PanchalSwapnil Panchal holds more than 6 years of experience in the technical field. Right now, he is a Technical PM at The One Technologies.

He creates a solution for users to make their life easy. He enjoys his life by traveling to spiritual places to rejuvenate.

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