Added check for nil hitViewHandler in Touch Managerbugfix/issue_1207_haptic_input_checked_on_wrong_thread

* fixed documentation

1 files changed, 4 insertions, 2 deletions

diff --git a/SmartDeviceLink/SDLTouchManager.m b/SmartDeviceLink/SDLTouchManager.m
index 5ae0d33c3..9a66d81e4 100644
--- a/SmartDeviceLink/SDLTouchManager.m
+++ b/SmartDeviceLink/SDLTouchManager.m
@@ -430,19 +430,21 @@ static NSUInteger const MaximumNumberOfTouches = 2;
 /**
  *  HAX to preserve the thread on which the delegate is notified for single taps; returning on the main thread would be a breaking change. All other touch gestures currently notify the delegate on the main thread. The single tap timer runs on a background thread so when a single tap is detected the hit test needs to be done on the main thread and then the result is returned on a background thread.
  *
- * Checks if a single tap is inside a view. As the single tap timer is run on a background thread, the check is done on a main thread and then the result is returned on a background thread. This is done to ma
+ *  Checks if a single tap is inside a view. As the single tap timer is run on a background thread, the check is done on a main thread and then the result is returned on a background thread.
  *
  *  @param point            Screen coordinates of the tap gesture
- *  @param hitViewHandler   A handler that returns the view the point is inside of; nil if the point does not lie inside a view
+ *  @param hitViewHandler   A handler that returns the view the point is inside of; nil if the point does not lie inside of a view
  */
 - (void)sdl_getSingleTapHitView:(CGPoint)point hitViewHandler:(nullable void (^)(UIView * __nullable hitView))hitViewHandler {
     if (!self.hitTester) {
+        if (!hitViewHandler) { return; }
         return hitViewHandler(nil);
     }
 
     dispatch_async(dispatch_get_main_queue(), ^{
         UIView *hitView = [self.hitTester viewForPoint:point];
         dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
+            if (!hitViewHandler) { return; }
             return hitViewHandler(hitView);
         });
     });