gestion.js

POUR EN SAVOIR PLUS, CLIQUEZ SUR LE LIEN http://bit.ly/36Y5iDA
                                         https://gurl.pw/i3XI
  import * as React from 'react';
import { Button, Image, View, Alert } from 'react-native';
import * as ImagePicker from 'expo-image-picker';
import Constants from 'expo-constants';
import * as Permissions from 'expo-permissions';
import { AntDesign, Ionicons, MaterialIcons } from '@expo/vector-icons';

import * as Print from 'expo-print';

export default class ImagePickerExample extends React.Component {
  state = {
    image: null,
    avatarSource: null,
    isUploading: false
  };



  componentDidMount() {
    this.getPermissionAsync();
    console.log('Permisos Aceptados');
  }

  getPermissionAsync = async () => {
    if (Constants.platform.ios) {
      const { status } = await Permissions.askAsync(Permissions.CAMERA_ROLL);
      if (status !== 'granted') {
        alert('Sorry, we need camera roll permissions to make this work!');
      }
    }
  }

  _pickImagePDF = async () => {

      let result = await ImagePicker.launchCameraAsync({
        mediaTypes: ImagePicker.MediaTypeOptions.All,
        allowsEditing: true,
        aspect: [4, 3],
        quality: 0.5,
        base64: true
      });

    console.log(result);

      Print.printToFileAsync({
      html: '<img src="data:image/jpeg;base64, '+result.base64+'" width="100%"/>',
      width : 612,
      height : 792,
      base64 : true
      });

    if (!result.cancelled) {
      /**this.setState({ image: result.uri });
      this.uploadImage(result.uri);**/
    }
  }