Under IOS code note pull Menu effect _ios

This example for you to share the iOS pull-down menu of specific code for your reference, the specific contents are as follows

One, the effect chart

Second, engineering drawing

Third, the Code

RootViewController.h

#import <UIKit/UIKit.h>

@interface rootviewcontroller:uiviewcontroller

@end 

Rootviewcontroller.m

#import "RootViewController.h" #import "NIDropDown.h" @interface Rootviewcontroller () @end @implementation Rootviewco Ntroller-(ID) Initwithnibname: (NSString *) Nibnameornil Bundle: (NSBundle *) Nibbundleornil {self = [super Initwithnibnam
 E:nibnameornil Bundle:nibbundleornil];
if (self) {//Custom initialization} return self;
 }-(void) viewdidload {[Super viewdidload];
 
 Do no 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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