如何更改UITableView 上Pull 刷新的文本颜色?

How can change the color of text of Pull to refresh on UITableView?

如何改变文本的颜色'loading...'?

尝试:

//the color of the background
self.refreshControl.backgroundColor = [UIColor purpleColor];

//the color of the spinner
self.refreshControl.tintColor = [UIColor whiteColor];

// the color of the label
NSString *title = @"loading...";
NSDictionary *attrsDictionary = [NSDictionary dictionaryWithObject:[UIColor whiteColor]
                                                                    forKey:NSForegroundColorAttributeName];
NSAttributedString *attributedTitle = [[NSAttributedString alloc] initWithString:title attributes:attrsDictionary];
self.refreshControl.attributedTitle = attributedTitle;