Read and write operations to file are standard functionality of any applications that are logging the events, work with files, up to the transfer of data over the network. In this article, we consider methods of recording information in the files, and read from a file recorded line.
Esthetic changes to the standard buttons or ListView will not be made in this lesson, since we work with what is hidden from the eyes of the user, namely, to work with files.
The entire structure of the project respectively is at this time only one class: MainActivity
Also, the project contains the following resource files:
styles.xml - in the file does not have any changes relating to a project.