Abstract: The design for APP of engineering graphics is discussed, for the teaching needs to develop
of spatial imagination ability of undergraduate. Base on the needs of teaching and study, the functions
are made sure that aided teaching and assisted learning of system, and the basic function of software
is designed. The frame structure of software is designed. The comparison of the mobile device system
platform, choose development and operation platform of the system. Through the analysis of interface
of Android framework, the orthographic view is designed. Through the analysis of and data needs of
the glDrawElements, and VRML97 data format, the VRML loader is designed. The 3D browser of
VRML model is designed on the Android system. And the core function of software is developed. The
APP of engineering graphics is realized based on Android platform. The software has characteristic of
innovation and practicability, and get the first prize in the 14th national multimedia courseware
contest.

Key words: engineering graphics, mobile devices, education, Android, application