ExpandText. 可展开的TextView,文字展开之后，如果最后一行能容纳箭头，则箭头放在最后一行，如果文本刚好充满最后一行，箭头放在下一行

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.