判断iOS应用是否开放HTTP权限

iOS March 23 2016 解决问题


从 iOS9 起,新特性要求 App 访问网络请求,要采用 HTTPS 协议。但是能不能判断开发者是否允许 HTTP 的请求,这样就不会在发起请求时候失败同时弹出以下信息:

App Transport Security has blocked a cleartext HTTP (http://) resource load since it is insecure. Temporary exceptions can be configured via your app’s Info.plist file.

这个需求其实是最近在弄 HTTPDNS 相关的一些东西,只能通过 HTTP 接口请求,但是希望能判断应用是否允许了 HTTP 的访问,如果允许才开启 HTTPDNS 相关的功能。

解决方法比较简单,其实就是读取 info.plist 看看 NSAppTransportSecurity 是否为 YES

Objective-C 实现

- (BOOL)isHTTPEnable {
  if([[[UIDevice currentDevice] systemVersion] compare:@"9.0" options:NSNumericSearch] != NSOrderedAscending){
    NSDictionary *infoDict = [[NSBundle mainBundle] infoDictionary];
    return [[[infoDict objectForKey:@"NSAppTransportSecurity"] objectForKey:@"NSAllowsArbitraryLoads"] boolValue];
  }
  return YES;
}

使用方法:

if ([self isHTTPEnable]) {
  NSLog(@"HTTP enable");
} else {
  NSLog(@"HTTP disable");
}

Swift 实现

func isHTTPEnable() -> Bool {
  let flag = UIDevice.currentDevice().systemVersion.compare("9.0.0", options: NSStringCompareOptions.NumericSearch)
  if (flag != .OrderedAscending) {
    guard let infoDict = NSBundle.mainBundle().infoDictionary else {
      return false
    }
    guard let appTransportSecurity = infoDict["NSAppTransportSecurity"] else {
      return false
    }
    guard let allowsArbitraryLoads = appTransportSecurity["NSAllowsArbitraryLoads"] else {
      return false
    }
    guard let res = allowsArbitraryLoads else {
      return false
    }
    return res as! Bool 
  }
  return true
}

使用方法:

if self.isHTTPEnable() {
  print("HTTP enable")
} else {
  print("HTTP disable")
}

原文链接:https://blog.yourtion.com/is-ios-app-enable-http.html


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