5.20收到apple回复 应用被拒绝，以下为描述：
2016年5月20日 at 上午6:42
From Apple
4.5-Apps using background location services must provide a reason that clarifies the purpose of the use, using mechanisms described in the Human Interface Guidelines
4.5 Details
Your app uses background location services but does not clarify the purpose of its use in the location modal alert as required in theiOS Human Interface Guidelines.
We’ve attached screenshot(s) for your reference.
Next Steps
Please reconfigure the UIAlertControllerStyleAlert in your code and specify the intended purpose of using background location in its message field.
Resources
For additional information and instructions on configuring and presenting an alert, see theAccessing User Datasection of the iOS Human Interface Guidelines and theUIKit Framework Reference.
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网上查阅资料：
http://stackoverflow.com/questions/37068263/how-to-clarify-the-purpose-of-its-use-in-the-location-modal
解决方案步骤：
1.打开项目plist
2.run
