index.ios.js

var NativeModules = require('react-native').NativeModules;

function RCTQRCodeReaderError(message){
  this.message = message;
}

RCTQRCodeReaderError.prototype = new Error();


module.exports = {
  RCTQRCodeReaderError: RCTQRCodeReaderError,
  scan(callback: (error: ?RCTQRCodeReaderError, qrcode: string) => void) {
    NativeModules.RCTQRCodeReader.scan((error, ret) => {
      if(error){
        return callback(new RCTQRCodeReaderError(error), null);
      }
      callback(null, ret)
    });
  }
};

package.json

{
  "name": "react-native-qrcode",
  "version": "0.0.1",
  "description": "QRCode Reader",
  "main": "index.ios.js",
  "author": "Developerworks <developerworks@163.com> (https://github.com/developerworks)",
  "dependencies": {
    "react-native": "^0.3.1"
  },
  "devDependencies": {
    "jest-cli": "0.2.1"
  }
}

RCTQRCodeReader.h

//#import <UIKit/UIKit.h>
//
//@interface RCTQRCodeReader : UIView
//
//@end

#import <RCTBridgeModule.h>

@interface RCTQRCodeReader : NSObject <RCTBridgeModule>


@end

RCTQRCodeReader.m

#import "RCTQRCodeReader.h"

#import <RCTBridgeModule.h>
#import <RCTConvert.h>
#import <RCTLog.h>

@implementation RCTQRCodeReader

@synthesize bridge = _bridge;


- (id) init {
    self = [super init];
    
    return self;
}

/**
 * 返回扫描得到的二维码结果给Javascript Runtime
 */
- (void)scan:(RCTResponseSenderBlock)callback {
    RCT_EXPORT();
    
    // 加载QRCodeReader
    // 获取结果
    
    // 存储二维码字符串
    NSString *result = @"07f14c20-db74-11e4-99b2-000c29d02dc7";
    RCTLogError(@"二维码字符串 %@", result);
    
    // 返回给Javascript
    callback(@[[NSNull null], result]);
}


/**
 * 在我们的 CalendarManager 示例中，如果我们想传递事件日期给本地模块，我们必须要把它转换成字符串或者数字
 */
//- (void)addEventWithName:(NSString *)name location:(NSString *)location date:(NSInteger)secondsSinceUnixEpoch
//{
//    RCT_EXPORT(addEvent);
//    NSDate *date = [NSDate dateWithTimeIntervalSince1970:secondsSinceUnixEpoch];
//}

/**
 * 随着 CalendarManager.addEvent 方法越来越复杂，参数的数量将会增加。某些参数可能是可选的。
 * 这时值得考虑改变一点 API 的形式，接受一个事件属性字典，就像这样
 */
//- (void)addEventWithName:(NSString *)name details:(NSDictionary *)details
//{
//    RCT_EXPORT(addEvent);
//    // 获取位置参数
//    NSString *location = [RCTConvert NSString:details[@"location"]]; // ensure location is a string
//    // 活期日期参数
//    NSInteger *secondsSinceUnixEpoch = [RCTConvert NSInteger:details[@"secondsSinceUnixEpoch"]];
//    NSDate *date = [NSDate dateWithTimeIntervalSince1970:secondsSinceUnixEpoch];
//}


@end