captureImage.js

import React, { Component, PureComponent } from 'react';
import { StyleSheet, Text, View, TouchableOpacity, Platform, Image } from 'react-native';
import ImagePicker from 'react-native-image-picker';

export default class CaptureImage extends PureComponent {

  constructor(props) {
    super(props);
    this.state = {
      picSource: null
    }
  }

  componentDidMount() {
    setTimeout(() => {
      this._takePic();
    }, 2000);
  }

  _takePic = () => {
    ImagePicker.launchCamera({}, (response) => {
      this.setState({
        picSource: response.uri,
        fileInfo: response,
        imgUrl: response.uri,
        imageUpload: true
      },() => {
       // Upload image code
      }))
    });
  }

  render() {
    if (this.state.picSource)
    return (
      <View style={{ margin: 28, padding: 3, marginTop: 3, borderWidth: 1, borderColor: '#D8D8D8' }}>
        <Image
          source={{ uri: this.state.picSource }}
          style={{
            alignSelf: 'center',
            width: '100%',
            height: 280,
          }}
        />
      </View>)
    else
    return(<View/>)
  }
}