ios下拉菜单 IOS代码笔记之下拉菜单效果

时间:2021-03-22 情深雨蒙人气:0

想了解IOS代码笔记之下拉菜单效果的相关内容吗，情深雨蒙在本文为您仔细讲解ios下拉菜单的相关知识和一些Code实例，欢迎阅读和指正，我们先划重点：ios,下拉菜单，下面大家一起来学习吧。

一、效果图

二、工程图

三、代码

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];
}

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