Abstract: With the rapid popularization of smart phones, more and more people use smart phones to take photographs, as time goes by, there are hundreds of photos in their mobile phone, it is difficult to recall the mood at the moment of taking pictures and  to describe the meaning of the photo in words when sharing with friends. Aiming at this, this paper based on the mobile operating system, builds an Android-based micro-injection system. The system can classify the picture, add voice annotations, sent voice notes pictures to E-mail, make Bluetooth transmission, share to Weibo,micro letter, etc. Practice shows that using the system greatly  improves the interactivity between friends by mobile phone.

Key words:  smart phone, mobile application, voice note, bluetooth, share