基于Qt的Android应用程序C/C++开发方法与实践

Android Java应用程序（APP）运行时需依赖Dalvik虚拟机环境，从而影响APP的性能表现.C/C++程序具有极好的硬件适应能力，但不能直接开发Android APP.针对该问题，利用Dalvik虚拟机支持JNI （Java Native Inter-face）调用的特点，设计了基于Qt的Android APP C/C++开发方法框架体系，给出了框架的详细工作机制和解决方案，系统总结了利用C/C++开发Android APP的主要过程和步骤.最后，以Android版机械CAD导教APP的开发工作为例，验证了方法的有效性和可行性，为直接利用C/C++开发Android APP提供了一种新途径.

Qt-Based C/C++ Development Pattern and Its Application for Android APP

Android Software Development Kit (SDK), a collection of Android tools, is an effective Java-based kit to develop Android APPlication (APP). However, Android APP''s performance is usually limited by the backend Dalvik virtual machine environment. A novel practical model that Android APP developed by C/C++ codes is proposed, because Java Native Interface (JNI) can support C/C++ dynamic library callback mechanism. This paper firstly analyzes and compares the characters between the general development mode for Android APP and Qt cross-platform development framework, and presents a novel principle and a technical relationship between Android APP and Qt framework. Then, it describes the main processes, abstract implementation steps, and software list for the solution. Finally, the development of a sample APP, Mechanical CAD Teaching Assistant, is given as an example to verify the effectiveness and feasibility of the development pattern. This work provides a new way to use C/C++ programming language to develop APPs running on Android operating system.