Fix issue MortimerGoro#216: crash when combining programmatically cre…

…ated offset animations in consecutive block callbacks
jkwf · Aug 27, 2016 · 13da33f · 13da33f
1 parent 2cf7a42
commit 13da33f
Showing 1 changed file with 4 additions and 2 deletions.
diff --git a/MGSwipeTableCell/MGSwipeTableCell.m b/MGSwipeTableCell/MGSwipeTableCell.m
@@ -1105,8 +1105,9 @@ -(void) animationTick: (CADisplayLink *) timer
         [timer invalidate];
         _displayLink = nil;
         if (_animationCompletion) {
-            _animationCompletion(YES);
+            void (^callbackCopy)(BOOL finished) = _animationCompletion; //copy to avoid duplicated callbacks
             _animationCompletion = nil;
+            callbackCopy(YES);
         }
     }
 }
@@ -1123,8 +1124,9 @@ -(void) setSwipeOffset:(CGFloat)offset animation: (MGSwipeAnimation *) animation
         _displayLink = nil;
     }
     if (_animationCompletion) { //notify previous animation cancelled
-        _animationCompletion(NO);
+        void (^callbackCopy)(BOOL finished) = _animationCompletion; //copy to avoid duplicated callbacks
         _animationCompletion = nil;
+        callbackCopy(NO);
     }
     if (offset !=0) {
         [self createSwipeViewIfNeeded];