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.