self.refreshControl.tintColor = [UIColor blueColor];//this just only change it color
Can I change the drop-down Arrow to some picture or another shape? How?
Thanks a lot!
Nope. You can only change the color of the arrow, but not the arrow itself. If you would like to be able to do so, please file an enhancement request and it'll be considered.
Of course, you're also able to write one yourself, or use an open source variant.