本文实例为大家分享了ios下拉按钮效果展示的具体代码，供大家参考，具体内容如下
一、效果图。
二、工程图。
三、代码。
rootviewcontroller.h
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#import <uikit/uikit.h>
@interface rootviewcontroller : uiviewcontroller
@end
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rootviewcontroller.m
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#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];
}
- (void)didreceivememorywarning
{
[super didreceivememorywarning];
// dispose of any resources that can be recreated.
}
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以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持服务器之家。