App Transport Security has blocked a cleartext HTTP (http://) resource load since it is insecure

今天在调用SDWebImage的时候发现Xcode会报错：

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会将HTTP格式的阻断

解决方法：

在info.plist文件中添加：

App Transport Security Settings (是个Dictionary)

并在其中添加Allow Arbitrary Loads，设置为YES

解决。