初始化时hotSearches为nil，稍后设置导致hotSearchStyle失效

[zhongdom]

#warning 初始化的时候hotSearches为nil
    PYSearchViewController *searchViewController = [PYSearchViewController searchViewControllerWithHotSearches:nil searchBarPlaceholder:@"搜索编程语言" didSearchBlock:^(PYSearchViewController *searchViewController, UISearchBar *searchBar, NSString *searchText) {
        // 开始搜索执行以下代码
        // 如：跳转到指定控制器
        [searchViewController.navigationController pushViewController:[[PYTempViewController alloc] init] animated:YES];
    }];
    
    searchViewController.view.backgroundColor = [UIColor whiteColor];
    
    // 3. 设置风格
    if (indexPath.section == 0) { // 选择热门搜索
        searchViewController.hotSearchStyle = (NSInteger)indexPath.row; // 热门搜索风格根据选择
        searchViewController.searchHistoryStyle = PYHotSearchStyleDefault; // 搜索历史风格为default
    } else { // 选择搜索历史
        searchViewController.hotSearchStyle = PYHotSearchStyleDefault; // 热门搜索风格为默认
        searchViewController.searchHistoryStyle = (NSInteger)indexPath.row; // 搜索历史风格根据选择
    }
    // 4. 设置代理
    searchViewController.delegate = self;

    dispatch_async(dispatch_get_global_queue(0, 0), ^{
        dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(3.0 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
            dispatch_async(dispatch_get_main_queue(), ^{
                searchViewController.hotSearches = @[@"Java", @"Python", @"Objective-C", @"Swift", @"C", @"C++", @"PHP", @"C#", @"Perl", @"Go", @"JavaScript", @"R", @"Ruby", @"MATLAB"];
#warning 如果没有这句调用，标签的style就会变成默认值
//                searchViewController.hotSearchStyle = PYHotSearchStyleBorderTag;
            });
        });
    });
    
    
    // 5. 跳转到搜索控制器
    UINavigationController *nav = [[UINavigationController alloc] initWithRootViewController:searchViewController];
    [self presentViewController:nav  animated:NO completion:nil];