multitouchDragStrategy property
Configure the multi-finger drag strategy on multi-touch devices.
If set to MultitouchDragStrategy.latestPointer, the drag gesture recognizer will only track the latest active (accepted by this recognizer) pointer, which appears to be only one finger dragging.
If set to MultitouchDragStrategy.sumAllPointers, all active pointers will be tracked together and the scrolling offset is the sum of the offsets of all active pointers
By default, MultitouchDragStrategy.latestPointer is configured to create drag gestures for all platforms.
Implementation
MultitouchDragStrategy get multitouchDragStrategy => MultitouchDragStrategy.latestPointer;