MyDialogFragment. 继承自AppCompatDialogFragment，可以保存当前的dialog状态，即在手机旋转屏幕的时候dialog不会被销毁，使用了序列化把dialog前面的状态都保存了下来，非常好用,并且可以自定义view

Problem

The full read on this project is a sign-in away — what it solves, who it serves, and where it sits in the market.

Audience

The full read on this project is a sign-in away — what it solves, who it serves, and where it sits in the market.

Market

The full read on this project is a sign-in away — what it solves, who it serves, and where it sits in the market.

Pricing

The full read on this project is a sign-in away — what it solves, who it serves, and where it sits in the market.