117 lines
2.7 KiB
JavaScript
117 lines
2.7 KiB
JavaScript
/**
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* Sample React Native App
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* https://github.com/facebook/react-native
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*/
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import React, { Component } from 'react';
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import {
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AppRegistry,
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CameraRoll,
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StyleSheet,
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Text,
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View,
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Image,
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Alert,
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TouchableOpacity
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} from 'react-native';
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import Spinner from 'react-native-gifted-spinner';
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import ImageResizer from 'react-native-image-resizer';
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const styles = StyleSheet.create({
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container: {
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flex: 1,
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justifyContent: 'center',
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alignItems: 'center',
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backgroundColor: '#F5FCFF',
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},
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welcome: {
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fontSize: 20,
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textAlign: 'center',
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margin: 10,
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},
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instructions: {
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textAlign: 'center',
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color: '#333333',
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marginBottom: 5,
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},
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image: {
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width: 250,
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height: 250,
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},
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resizeButton: {
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color: '#333333',
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fontWeight: 'bold',
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marginBottom: 5,
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}
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});
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export default class ResizerExample extends Component {
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constructor() {
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super();
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this.state = {
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resizedImageUri: '',
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loading: true,
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};
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}
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componentDidMount() {
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CameraRoll.getPhotos({first: 1}).then((photos) => {
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if (!photos.edges || photos.edges.length === 0) {
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return Alert.alert('Unable to load camera roll',
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'Check that you authorized the access to the camera roll photos and that there is at least one photo in it');
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}
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this.setState({
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image: photos.edges[0].node.image,
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})
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}).catch(() => {
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return Alert.alert('Unable to load camera roll',
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'Check that you authorized the access to the camera roll photos');
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});
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}
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resize() {
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ImageResizer.createResizedImage(this.state.image.uri, 800, 600, 'JPEG', 80)
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.then((resizedImageUri) => {
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this.setState({
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resizedImageUri,
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});
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}).catch((err) => {
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console.log(err);
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return Alert.alert('Unable to resize the photo',
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'Check the console for full the error message');
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});
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}
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render() {
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return (
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<View style={styles.container}>
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<Text style={styles.welcome}>
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Image Resizer example
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</Text>
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<Text style={styles.instructions}>
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This is the original image:
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</Text>
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{
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this.state.image ?
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<Image style={styles.image} source={{uri: this.state.image.uri}} /> :
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<Spinner />
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}
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<Text style={styles.instructions}>
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Resized image:
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</Text>
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<TouchableOpacity onPress={() => this.resize()}>
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<Text style={styles.resizeButton}>
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Click me to resize the image
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</Text>
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</TouchableOpacity>
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{
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this.state.resizedImageUri ?
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<Image style={styles.image} source={{uri: this.state.resizedImageUri}} /> : null
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}
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</View>
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);
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}
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}
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