让碎片化继续发展

I have been using this library for more than a year, and at that time, Androidx was not yet adapted. After downloading the code, I made some modifications, and it was a bit of a hassle. Later, the author also updated Androidx. During use, I encountered some problems that were difficult to handle. After encountering these problems, I first went to the issue to see if there were any solutions. Many people had the same problems as me, but none of them were solved. In my free time, I finished the library and basically got the Fragment source code working, which solved the previously difficult problems.