How to change table view height according to the content size?

For changing the table view height according to the content size

- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary *)change context:(void *)context

{

   

    CGRect frame = self.listOfSets.frame;

    frame.size = self.listOfSets.contentSize;

self.listOfSets.frame = CGRectMake 

                        (self.listOfSets.frame.origin.x ,  

                         self.view.frame.size.height - 

                     

                   (self.listOfSets.contentSize.height+80),

                    self.listOfSets.contentSize.width, 

                    self.listOfSets.contentSize.height);

   

}