Context: Mobile applications (apps) have become deeply personal, constantly demanding access to privacy-sensitive information in exchange for more personalized user experiences. Such privacy-invading practices have generated major multidimensional privacy concerns among app users.

Objective: The research on mobile app privacy has experienced rapid growth over the past decade. This line of research is aimed at systematically exposing the privacy practices of apps and proposing solutions to protect the privacy of mobile app users. In this paper, we conduct a systematic mapping study of this body of research. Our objectives are to a) explore trends in SE app privacy research, b) categorize existing evidence, and c) identify potential directions for future research.

Method: A systematic mapping study of 59 Software Engineering (SE) primary studies on mobile app privacy. Our scope is studies published in software engineering venues between 2008 and 2018.

Results: Our results show that existing literature can be divided into four main categories: privacy policy, requirements, user perspective, and leak detection. Furthermore, our survey reveals an imbalance between these categories— the majority of existing research focuses on proposing tools for detecting privacy leaks, with fewer studies targeting privacy requirements and policy and even fewer on user perspective.

Conclusions: Our survey exposes several gaps in existing research and suggests areas for improvement.

上下文：移动应用程序（应用程序）已经变得非常个人化，不断要求访问对隐私敏感的信息，以换取更个性化的用户体验。这种侵犯隐私的做法在应用程序用户中引起了主要的多维隐私问题。

目标：在过去十年中，有关移动应用程序隐私的研究经历了快速的增长。该研究领域旨在系统地公开应用的隐私惯例，并提出解决方案以保护移动应用用户的隐私。在本文中，我们对该研究机构进行了系统的制图研究。我们的目标是：a）探索SE应用程序隐私研究的趋势，b）对现有证据进行分类，以及c）确定未来研究的潜在方向。

方法：对59个软件工程（SE）关于移动应用程序隐私的基础研究的系统映射研究。我们的研究范围是2008年至2018年在软件工程领域发表的研究。

结果：我们的结果表明，现有文献可以分为四个主要类别：隐私策略，要求，用户角度和泄漏检测。此外，我们的调查揭示了这些类别之间的不平衡-大多数现有研究集中于提出检测隐私泄漏的工具，针对隐私要求和策略的研究较少，而从用户角度出发的研究也更少。

结论：我们的调查揭示了现有研究中的几个空白，并提出了需要改进的地方。