I’m building a dedicated book-reader app for Android that marries on-screen reading with in-line audio controls. The primary function is clear: users read the text while tapping integrated Play/Pause and Forward/Rewind buttons to listen along. Key features I need working flawlessly: • Text highlighting that persists between sessions • Simple page bookmarking • Adjustable font size for comfortable reading • An interlinked, tappable table of contents • A compact audio panel with Play/Pause, forward and rewind controls The reading view and the audio player must feel native to one another—no awkward jumps or external players. Smooth performance on current Android versions is essential, and I’ll need the full, well-commented source so I can extend the project later.