IOS代码笔记之下拉选项cell

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

@interface RootViewController : UIViewController
{
  ComboBoxView    *_comboBox;
}

@end 

#import "RootViewController.h"

@interface RootViewController ()

@end

@implementation RootViewController

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
  self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
  if (self) {
    // Custom initialization
  }
  return self;
}

- (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];
  
  
}