Write the page is a little ugly, but the five viscera, the basic part of the content are involved, there are a few major optimization, there may be some shortcomings, but also hope you give directions.
The import project may generate an error because our JRE System Library is different. In this case, you should Remove your JRE System Library and Add Library to your own JRE System Library
I recommend you take a look at the Book5 demo to see how each feature works
Okay, go straight to project code book