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Commit 81ab91a6 authored by Hans Muller's avatar Hans Muller
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Merge pull request #914 from HansMuller/null_fling_simulation 

Only set tolerance if simulation is non-null

Fixes #898
parents 2da6b175 7ebb6412
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Showing with 7 additions and 4 deletions
packages/flutter/lib/src/widgets/scrollable.dart
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...@@ -197,10 +197,13 @@ abstract class ScrollableState<T extends Scrollable> extends State<T> { ...@@ -197,10 +197,13 @@ abstract class ScrollableState<T extends Scrollable> extends State<T> {
} }
Simulation _createFlingSimulation(double velocity) { Simulation _createFlingSimulation(double velocity) {
final double endVelocity = pixelToScrollOffset(kPixelScrollTolerance.velocity); final Simulation simulation = scrollBehavior.createFlingScrollSimulation(scrollOffset, velocity);
final double endDistance = pixelToScrollOffset(kPixelScrollTolerance.distance); if (simulation != null) {
return scrollBehavior.createFlingScrollSimulation(scrollOffset, velocity) final double endVelocity = pixelToScrollOffset(kPixelScrollTolerance.velocity);
..tolerance = new Tolerance(velocity: endVelocity.abs(), distance: endDistance); final double endDistance = pixelToScrollOffset(kPixelScrollTolerance.distance);
simulation.tolerance = new Tolerance(velocity: endVelocity.abs(), distance: endDistance);
}
return simulation;
} }
double snapScrollOffset(double value) { double snapScrollOffset(double value) {
......
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