Flutter - 我想创建自定义 TextFomrField 边框

Question

This TextFormField should have different width in different borderside

For example:

• left border = 3
• right border =1

How can I do that without using containers?

the default code is

Answer 1

I just need to create a new class and extends the OutlineInputBorder and override the paint function and in canvas, i need to change to width of the line that i want with different width