下拉选项cell

#import <UIKit/UIKit.h>
//加入头文件
#import "ComboBoxView.h"

@interface RootViewController : UIViewController
{
    ComboBoxView        *_comboBox;
}

@end

- (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view.
    
    self.navigationController.navigationBarHidden=YES;
    
    
    NSArray *comboBoxDatasource = [[NSArray alloc] initWithObjects:@"one", @"two", @"three", @"four", @"five", @"six", @"seven", @"eight", nil];
    _comboBox = [[ComboBoxView alloc] initWithFrame:CGRectMake(20, 20, 280, 140)];
    _comboBox.comboBoxDatasource = comboBoxDatasource;
    _comboBox.backgroundColor = [UIColor clearColor];
    [_comboBox setContent:[comboBoxDatasource objectAtIndex:0]];
    [self.view addSubview:_comboBox];
    
    
}