Abstract: We analyzed the Dalvik virtual machine architecture, and studied several key technologies about the process of porting Dalvik for the iOS platform. We successfully built a Dlavik based JAVA runtime environment on the iOS platform which has great application value in mobile application development of the iOS and Android cross platform. We also analyzed the performance of the Migrated Dalvik and gave a conclusion and the fulture plan of this project.

Key words: Android, iOS, Dalvik, Java virtual machine, Portability