What kind of connection exists between innerRadiusRatio and thicknessRatio from GradientDrawable class?

Question

Let\'s supposed we\'ve got a ring with inner radius R2 and outer radius R1. According documentation: Inner radius of the ring expressed as a ratio of the ring\'s width.For

Answer 1

Ratios are a comparison of two numbers, so the above two equations can be rewritten as

Ratio1 = InnerRadius : Ring Width (where Ratio1 = InnerRadiusRatio)

Ratio2 = Thickness : Ring Width (where Ratio2 = ThicknessRatio)

Which means...

Ring Width = Ratio1 x Inner Radius = Ratio2 x Thickness

The "2" appeared since you added it into your equation. The only common denominator in all equation is "Ring Width". Trying it out with real numbers helps too.