IOS开发 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.
xcode自7后不再使用http，而是使用https请求，但目前很多网络请求还只是以http请求，我们可以这样解决
info.plist->添加@“App Transport Security Settings”字段->添加“Allow Arbitrary Loads”字段，并将对应的value值设置为@“YES”