修改searchbar 取消 字体 颜色

    UIButton *cancelButton;
    UIView *topView = self.searchDisplayController.searchBar.subviews[];
    for (UIView *subView in topView.subviews) {
        if ([subView isKindOfClass:NSClassFromString(@"UINavigationButton")]) {
            cancelButton = (UIButton*)subView;
        }
    }
    if (cancelButton) {
        //Set the new title of the cancel button
        [cancelButton setTitle:@"取消" forState:UIControlStateNormal];
        [cancelButton setTitleColor:[UIColor colorWithRed:.f/.f green:.f/.f blue:.f/.f alpha:1.0] forState:UIControlStateNormal];
        cancelButton.titleLabel.font = [UIFont fontWithName:@"Heiti SC" size:];
    }