Xcode 7中的错误：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.

这个错误是由于iOS发布的HTTPS造成的，凡是没有添加以下条目的都会报这个错误：
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.

要改正很简单，在Info.plist文件中，添加一个条目：
App Transport Security Settings
然后再添加其子目录：
Allow Arbitrary Loads，并设置为YES.
看下图：

屏幕快照 2016-09-28 上午12.02.32.png

屏幕快照 2016-09-28 上午12.03.00.png