Here is an Example of Image Picker in React Native. For picking the image we will use a very good library called react-native-image-picker. Which provides ImagePicker component to in which you can provide the image picking option from Gallery or Camera or From you custom source like Facebook posts.
How to Use
react-native-image-picker library provides an ImagePicker component in which you can set the options like the title of the picker, Your custom Buttons(Name and title of the button) and storage options like skipBackup or path.
Here is the code snippet of ImagePicker we have used in this Example
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 | var options = { title: 'Select Image', customButtons: [ { name: 'customOptionKey', title: 'Choose Photo from Custom Option' }, ], storageOptions: { skipBackup: true, path: 'images', }, }; ImagePicker.showImagePicker(options, response => { console.log('Response = ', response); if (response.didCancel) { console.log('User cancelled image picker'); } else if (response.error) { console.log('ImagePicker Error: ', response.error); } else if (response.customButton) { console.log('User tapped custom button: ', response.customButton); alert(response.customButton); } else { let source = response; this.setState({ filePath: source, }); } }); |
In this example below, we will open an Image picker on a click of a button and will show the selected image on the Image component. Selection options Camera and Gallery are by default but we have also added a custom button which will simply generate an alert when we click on it but You can do whatever you want. So Let’s get started with our Example.
To Make a React Native App
Getting started with React Native will help you to know more about the way you can make a React Native project. We are going to use react-native init to make our React Native App. Assuming that you have node installed, you can use npm to install thereact-native-cli command line utility. Open the terminal and go to the workspace and runInstallation of Dependency
To use ImagePicker we need to install react-native-image-picker package.
To install this
Open the terminal and jump into your project using.
1 | cd ProjectName |
run the following command.
1 | npm install react-native-image-picker --save |
This command will copy all the dependencies into your node_module directory, You can find the directory in node_module the directory named react-native-image-picker.
Linking of Library
To use react-native-image-picker library we have to link some dependencies in Android and IOS project files. In order to link the library you have to run following command:
1 | react-native link react-native-image-picker |
You can see the following changes in your android project. If you are unable to find the changes then please do those changes as they are must for this example.
Go to the ImagePickerExample> android > app > build.gradle.
Scroll down and you can see the following dependency and if not please add this.
1 | compile project(':react-native-image-picker') |
Open ImagePickerExample> android > settings.gradle and you can see the following lines and if not please add this.
1 2 | include ':react-native-image-picker' project(':react-native-image-picker').projectDir = new File(rootProject.projectDir, '../node_modules/react-native-image-picker/android') |
Open ImagePickerExample> android > app > src > main > java > com > imagepickerexample> MainApplication.java and you can see the following lines in imports if not then please add
1 | import com.imagepicker.ImagePickerPackage; |
Scroll down and you can see the following line in getPackages after new MainReactPackage() if not then please add a comma(,) and add
1 | new ImagePickerPackage() |
For the Android, we have to ask some permission before we start with the code as we are going to use the Camera and will access the external storage. You have to add the following permission to your AndroidMenifest.xml
1 2 | <uses-permission android:name="android.permission.CAMERA" /> <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/> |
Here we have done with our installation of the library. If you are still facing the trouble please comment below so that we can help you out from the problem. Just to confirm the dependencies here is the screenshot of the dependencies that we are using
If you are on the same boat then let’s go further or please update your package.json and run npm install to install new dependencies.
You can download the source code from Github
OR
Open App.js in any code editor and replace the code with the following code
App.js
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 | /*This is an example of Image Picker in React Native*/ import React from 'react'; import { StyleSheet, Text, View, Button, Image } from 'react-native'; var ImagePicker = require('react-native-image-picker'); export default class App extends React.Component { constructor(props) { super(props); this.state = { filePath: {}, }; } chooseFile = () => { var options = { title: 'Select Image', customButtons: [ { name: 'customOptionKey', title: 'Choose Photo from Custom Option' }, ], storageOptions: { skipBackup: true, path: 'images', }, }; ImagePicker.showImagePicker(options, response => { console.log('Response = ', response); if (response.didCancel) { console.log('User cancelled image picker'); } else if (response.error) { console.log('ImagePicker Error: ', response.error); } else if (response.customButton) { console.log('User tapped custom button: ', response.customButton); alert(response.customButton); } else { let source = response; // You can also display the image using data: // let source = { uri: 'data:image/jpeg;base64,' + response.data }; this.setState({ filePath: source, }); } }); }; render() { return ( <View style={styles.container}> <View style={styles.container}> {/*<Image source={{ uri: this.state.filePath.path}} style={{width: 100, height: 100}} />*/} <Image source={{ uri: 'data:image/jpeg;base64,' + this.state.filePath.data, }} style={{ width: 100, height: 100 }} /> <Image source={{ uri: this.state.filePath.uri }} style={{ width: 250, height: 250 }} /> <Text style={{ alignItems: 'center' }}> {this.state.filePath.uri} </Text> <Button title="Choose File" onPress={this.chooseFile.bind(this)} /> </View> </View> ); } } const styles = StyleSheet.create({ container: { flex: 1, backgroundColor: '#fff', alignItems: 'center', justifyContent: 'center', }, }); |
To Run the React Native App
Open the terminal again and jump into your project using.
From Camera
From Gallery
This is how you can Pick an Image from the React Native Application. If you have any doubt or you want to share something about the topic you can comment below or contact us here. There will be more posts coming soon. Stay tuned!
Hope you liked it. 🙂
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Please tell us How to manage run time permissions when using camera for this tutorial on android>=23?
Hi Nikhil,
I will update the source code today for that.
Mean while if you want to see the example of camera permission then please visit the camera example https://aboutreact.com/react-native-camera
Hope this will help you.