Please help me fix the code in My android app and add some button

Job Description:

Please made the button working , search button ,back and foward button .

please made this button work on same chapter : when user click a link

on chapter 1 its can go back and foward url that

been stored in the chapter 1

also made search button working can search all the word in chapter 1

So all the chapter in app can go and foward the url link store in [login to view URL]

Please also add bookmark in my app

Habilidades: Android, Mobile App Development, Java, Android Studio, Android App Development

ID do Projeto: #34026308