问题1：读取的内购商品列表不是添加时的顺序

解决步骤：由于我是使用的 react-native-iap 组件开发的，所以使用的是 JavaScript 数组排序，代码如下：

const products = await RNIap.getProducts(itemSkus);
const orderedProducts = products.sort((left, right) => left.price - right.price);

这样就是按价格从低到高排序了。

问题2：无法连接到 iTunes Store

解决步骤： 进入 WiFi，找到「配置 DNS」，设置为「手动」，在最顶部添加「114.114.114.114」或「8.8.8.8」，记得点右上角「存储」。注意：该错误可能与「问题4」互斥

问题3：App 内购时，提示说：此时没有权限在Sandbox购买此InApp

解决步骤：

1. 打开 https://appstoreconnect.apple.com/access/testers
2. 添加 Sandbox 测试账号，注册时一定要填写真实邮箱，点击邀请，然后登录刚刚的邮箱，验证地址
3. 就可以免费测试自己 APP 的内购项了。

问题4：App 内购时，如果报「E_UNKNOWN」、「underlying error」、「https://sandbox.itunes.apple.com」、「无法连接到 iTunes Store」

{
  "framesToPop": 1,
  "code": "E_UNKNOWN",
  "nativeStackIOS": [
    "0   myapp                    0x0000000104c547d4 RCTJSErrorFromCodeMessageAndNSError + 92",
    "1   myapp                    0x0000000104c2fb74 __41-[RCTModuleMethod processMethodSignature]_block_invoke_2.194 + 108",
    "2   myapp                    0x000000010453c674 -[RNIapIos rejectPromisesForKey:code:message:error:] + 320",
    "3   myapp                    0x000000010453dde4 __37-[RNIapIos request:didFailWithError:]_block_invoke + 136",
    "4   libdispatch.dylib                   0x0000000106fcd220 _dispatch_client_callout + 16",
    "5   libdispatch.dylib                   0x0000000106fdaa40 _dispatch_queue_barrier_sync_invoke_and_complete + 120",
    "6   myapp                    0x000000010453dd2c -[RNIapIos request:didFailWithError:] + 188",
    "7   StoreKit                            0x0000000198c43fa8 <redacted> + 232",
    "8   libdispatch.dylib                   0x0000000106fcd260 _dispatch_call_block_and_release + 24",
    "9   libdispatch.dylib                   0x0000000106fcd220 _dispatch_client_callout + 16",
    "10  libdispatch.dylib                   0x0000000106fd1db0 _dispatch_main_queue_callback_4CF + 1180",
    "11  CoreFoundation                      0x0000000184cef070 <redacted> + 12",
    "12  CoreFoundation                      0x0000000184cecbc8 <redacted> + 2272",
    "13  CoreFoundation                      0x0000000184c0cda8 CFRunLoopRunSpecific + 552",
    "14  GraphicsServices                    0x0000000186bef020 GSEventRunModal + 100",
    "15  UIKit                               0x000000018ebed78c UIApplicationMain + 236",
    "16  myapp                    0x0000000104511c40 main + 136",
    "17  libdyld.dylib                       0x000000018469dfc0 <redacted> + 4"
  ],
  "userInfo": {
    "NSErrorFailingURLKey": null,
    "_kCFStreamErrorDomainKey": 4,
    "NSErrorFailingURLStringKey": "https://sandbox.itunes.apple.com/WebObjects/MZStore.woa/wa/fetchSoftwareAddOns?appAdamId=0&icuLocale=zh_CN&bvrs=190315&sfId=143465-19,29&bid=com.myapp.bundleName&appExtVrsId=0",
    "_kCFStreamErrorCodeKey": -2102,
    "NSLocalizedDescription": "无法连接到 iTunes Store",
    "NSUnderlyingError": {
      "code": "-1001",
      "nativeStackIOS": [
        "0   myapp                    0x0000000104c547d4 RCTJSErrorFromCodeMessageAndNSError + 92",
        "1   myapp                    0x0000000104c549c0 RCTJSErrorFromCodeMessageAndNSError + 584",
        "2   myapp                    0x0000000104c2fb74 __41-[RCTModuleMethod processMethodSignature]_block_invoke_2.194 + 108",
        "3   myapp                    0x000000010453c674 -[RNIapIos rejectPromisesForKey:code:message:error:] + 320",
        "4   myapp                    0x000000010453dde4 __37-[RNIapIos request:didFailWithError:]_block_invoke + 136",
        "5   libdispatch.dylib                   0x0000000106fcd220 _dispatch_client_callout + 16",
        "6   libdispatch.dylib                   0x0000000106fdaa40 _dispatch_queue_barrier_sync_invoke_and_complete + 120",
        "7   myapp                    0x000000010453dd2c -[RNIapIos request:didFailWithError:] + 188",
        "8   StoreKit                            0x0000000198c43fa8 <redacted> + 232",
        "9   libdispatch.dylib                   0x0000000106fcd260 _dispatch_call_block_and_release + 24",
        "10  libdispatch.dylib                   0x0000000106fcd220 _dispatch_client_callout + 16",
        "11  libdispatch.dylib                   0x0000000106fd1db0 _dispatch_main_queue_callback_4CF + 1180",
        "12  CoreFoundation                      0x0000000184cef070 <redacted> + 12",
        "13  CoreFoundation                      0x0000000184cecbc8 <redacted> + 2272",
        "14  CoreFoundation                      0x0000000184c0cda8 CFRunLoopRunSpecific + 552",
        "15  GraphicsServices                    0x0000000186bef020 GSEventRunModal + 100",
        "16  UIKit                               0x000000018ebed78c UIApplicationMain + 236",
        "17  myapp                    0x0000000104511c40 main + 136",
        "18  libdyld.dylib                       0x000000018469dfc0 <redacted> + 4"
      ],
      "userInfo": {
        "_kCFStreamErrorDomainKey": 4,
        "_kCFStreamErrorCodeKey": -2102
      },
      "message": "underlying error",
      "domain": "kCFErrorDomainCFNetwork"
    }
  },
  "domain": "NSURLErrorDomain",
  "line": 16,
  "column": 1610,
  "sourceURL": "/var/containers/Bundle/Application/76B091DA-009F-4825-8232-0D594EC6D101/myapp.app/main.jsbundle"
}

解决步骤：
解决步骤： 进入 WiFi，找到「配置 DNS」，设置为「自动」，点右上角「存储」。注意：该错误可能与「问题2」互斥