Example of Image Picker in React Native
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 runnpm install -g react-native-clireact-native init ProjectNameInstallation of Dependency
To use ImagePicker we need to install react-native-image-picker dependency.
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 Dependency
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 the following command:
1 | react-native link react-native-image-picker |
After linking the dependency if you face Could not Compile Settings File project/android/settings.gradle error while building and installing the project then you can find the solution here.
Android Permission to use the Camera and to Read the Storage
We are using a Native API Camera and also going to choose the image from the gallery so we need to add some permission to the AndroidManifest.xml file. We are going to add the following permissions in the AndroidManifest.xml
1 2 | <uses-permission android:name="android.permission.CAMERA"/> <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/> |
| Permission | Purpose |
|---|---|
| CAMERA | To access the camera |
| WRITE_EXTERNAL_STORAGE | To Read and Write the content in the SD card |
On devices before SDK version 23, the permissions are automatically granted if they appear in the manifest but after SDK version 23 we have to ask run time permission also, so we will ask for permission in code also. For more about the permission, you can see this post.
IOS Permission to use the Camera and to Read the Storage
1. Open the project ImagePickerExample>ios>ImagePickerExample.xcodeproj in XCode. Click on Project (ImagePickerExample in my case) from the left sidebar and you will see multiple options in the workspace.
2. Select info tab which is info.plist
3. Click on the plus button to add following permission key and value which will be visible when permission dialog pops up.
Code For Image Picker
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.cd ProjectNamereact-native run-androidreact-native run-ios (macOS only).Android
IOS
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.
snehal you have any idea for browse multiple images from gallery….?