revises a division-by-zero error

magicstar · Mar 5, 2011 · c034f97 · c034f97
1 parent 1e4fe3d
commit c034f97
Showing 1 changed file with 12 additions and 2 deletions.
diff --git a/Classes/AQGridView.m b/Classes/AQGridView.m
@@ -681,8 +681,18 @@ - (void) layoutSubviews
 		backgroundRect.size.height = backgroundRect.size.height + MAX_BOUNCE_DISTANCE;
 	}
 
-	CGFloat minimumHeight = rect.size.height;
-	CGFloat actualHeight = [_gridData cellSize].height * ([_gridData numberOfItems] / [_gridData numberOfItemsPerRow] + 1);
+	CGFloat minimumHeight = rect.size.height, 
+		actualHeight = 0;
+
+	if (([_gridData numberOfItems] == 0) || ([_gridData numberOfItemsPerRow] == 0)) {
+
+		actualHeight = [_gridData cellSize].height;
+
+	} else {
+
+		actualHeight = [_gridData cellSize].height * ([_gridData numberOfItems] / [_gridData numberOfItemsPerRow] + 1);
+
+	}
 	for (; actualHeight < minimumHeight; actualHeight += [_gridData cellSize].height) {
 	}
 	backgroundRect.size.height = actualHeight;