IOS代碼筆記之下拉式功能表效果_IOS

本文執行個體為大家分享了ios下拉式功能表的具體代碼，供大家參考，具體內容如下

一、效果圖

二、工程圖

三、代碼

RootViewController.h

#import <UIKit/UIKit.h>@interface RootViewController : UIViewController@end 

 

RootViewController.m

#import "RootViewController.h"#import "NIDropDown.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.title=@"DropDown";  UIButton *button=[UIButton buttonWithType:UIButtonTypeRoundedRect]; button.frame=CGRectMake(10, 100, 150,30); button.backgroundColor=[UIColor redColor]; [button addTarget:self action:@selector(doClickAction:) forControlEvents:UIControlEventTouchUpInside]; [self.view addSubview:button];    }-(void)doClickAction:(UIButton *)btn{ NSArray *dataArray=[NSArray arrayWithObjects:@"1",@"2",@"3",@"4",@"5", nil];  NIDropDown *dropDown=[[NIDropDown alloc]init]; [dropDown showDropDown:btn andHeight:[dataArray count]*36 andData:dataArray]; [self.view addSubview:dropDown];}

以上就是本文的全部內容，希望對大家的學習有所協助，也希望大家多多支援雲棲社區。