saveOffset method Null safety

  1. @protected
void saveOffset()
protected">@protected

Called whenever scrolling ends, to persist the current scroll offset for state restoration purposes.

The default implementation stores the current value of pixels on the context by calling ScrollContext.saveOffset. At a later point in time or after the application restarts, the context may restore the scroll position to the persisted offset by calling restoreOffset.

Implementation

@protected
void saveOffset() {
  assert(hasPixels);
  context.saveOffset(pixels);
}