defaultContainerExtentPercentageToArmed constant
double
const defaultContainerExtentPercentageToArmed
The default distance the user must over-scroll for the indicator to be armed, as a percentage of the scrollable's container extent.
This value matches the extent to armed of built-in RefreshIndicator widget.
Implementation
static const defaultContainerExtentPercentageToArmed = 0.25 * (1 / 1.5);