Development of Android application of voice navigation by text

It is required to develop a software product for tablets on Android system. This software must be controlled by voice commands. The main objective of the software: 1. Editor of text with media data, setting up navigation on the compiled text when viewing. 2. View text with media data with text navigation using voice commands. As a basic module of editing and reading text, you can take any popular software. Voice control using known APIs (Google Speech).