autobots-lib/lib/scan.js

汽车人基础库

'use strict';

import React,{Component} from 'react';
import ReactNative from 'react-native';
import Native from '../native';
import Toast from './toast';
import PropTypes from 'prop-types';

const {
  StyleSheet,
  requireNativeComponent,
  NativeModules,
  DeviceEventEmitter,
  Platform,
  View,
  Text,
} = ReactNative;

  let openNative = function(callback)
  {

      let url = 'autobots://rn/scan';
      Native.callNative(url,function(result,data){
        if(callback)
        {
          callback(result,data);
        }
      });
  }



class Me extends Component {


  start(callback){
    openNative(callback);
  }

  componentWillMount() {
    var that = this;

    function cb_android(e:Event)
    {
      let result;
      try{
        result = JSON.parse(e.result);
      }catch(ex){
        result = e.result;
      }
      if(that.props.onCallBack)
      {
         that.props.onCallBack(result);
      }
    }

    function cb_ios(p)
    {
      if(that.props.onCallBack)
      {
         that.props.onCallBack(p);
      }
    }

    if(Platform.OS==='android')
      {
        this.sinListener = DeviceEventEmitter.addListener("react_event_scan_result",cb_android);
      }else {
        this.sinListener = DeviceEventEmitter.addListener("react_event_scan_result",cb_ios);
      }

  }

  componentWillUnmount() {

    if(this.sinListener!=null)
    {
      this.sinListener.remove();
      this.sinListener = null;
    }


  }

  render() {
      return(<View/>);
  }

}

Me.propTypes= {
  onCallBack: PropTypes.func.isRequired,
}

module.exports = Me;