I am trying to implement line scale for weight and height for my app, I have tried using custom paint but i dont know how to use the custom paint their are no specific tutorials or guide for it. But now, i am trying to implement this scale as below image
PS. I need thoes values in input field
And i need to get this scale work logically as eplained below
how to get after selecting 55 kg and display same 121.245 lb vice versa so both values should be equal for example 55 kg = 121.254 lb