button is not in the parent attempt, but needs to respond to click events

A Click event cannot be responded to when the button is not in the scope of the parent attempt. The project involved this part, then wrote a small demo (click the button, pop up two button, and all can respond to the Click event), as follows:

Custom View:cumoreview

//
CUMoreView.h
//

#import <UIKit/UIKit.h>

typedef void (^btnclickblock) (UIButton *btn);

@interface Cumoreview:uiview

@property (nonatomic, copy) Btnclickblock Btnclock;

-(void) Didclickbuttonwithblock: (Btnclickblock) Btnclock;

@end

//
cumoreview.m
Animation
//

#import "CUMoreView.h"
#import "Uiview+cu.h"

@interface Cumoreview ()
@property (nonatomic, weak) UIButton *btn2;
@property (nonatomic, weak) UIButton *btn3;
@property (nonatomic, assign) BOOL isshow;
@end

@implementation Cumoreview

-(Instancetype) initWithFrame: (CGRect) Frame {
self = [super Initwithframe:frame];
Self.isshow = NO;
UIButton *btn1 = [[UIButton alloc]initwithframe:cgrectmake (0, 0, 60, 30)];
Btn1.backgroundcolor = [Uicolor Lightgraycolor];
[Btn1 settitle:@ "AAAA" forstate:uicontrolstatenormal];
Btn1.tag = 10001;
[Btn1 addtarget:self Action: @selector (Didclickbutton:) forcontrolevents:uicontroleventtouchupinside];
[Self addsubview:btn1];

UIButton *btn2 = [[UIButton alloc]initwithframe:cgrectmake (0,-30, 60, 30)];
Btn2.backgroundcolor = [Uicolor Lightgraycolor];
[Btn2 settitle:@ "bbbb" forstate:uicontrolstatenormal];
btn2.userinteractionenabled = YES;
Btn2.alpha = 1;
Btn2.tag = 10002;
[Btn2 addtarget:self Action: @selector (Didclickbutton:) forcontrolevents:uicontroleventtouchupinside];
SELF.BTN2 = BTN2;
[Self addsubview:btn2];

UIButton *btn3 = [[UIButton alloc]initwithframe:cgrectmake (0,-60, 60, 30)];
Btn3.backgroundcolor = [Uicolor Lightgraycolor];
[Btn3 settitle:@ "CCCC" forstate:uicontrolstatenormal];
Btn3.alpha = 1;
Btn3.tag = 10003;
[Btn3 addtarget:self Action: @selector (Didclickbutton:) forcontrolevents:uicontroleventtouchupinside];
Self.btn3 = Btn3;
[Self addsubview:btn3];
return self;
}

-(void) Didclickbutton: (UIButton *) Clickbutton {
Nsinteger tag = Clickbutton.tag;

if (tag = = 10001) {

if (self.isshow = = NO) {//expand

[UIView animatewithduration:0.25 animations:^{
SELF.BTN2.Y =-30;
SELF.BTN3.Y =-60;
Self.btn2.alpha = 1;
Self.btn3.alpha = 1;
Self.isshow = YES;
}];
}else{//Shrinkage
[UIView animatewithduration:0.25 animations:^{
SELF.BTN3.Y = 0;
Self.btn3.alpha = 0;
self.btn2.y = 0;
Self.btn2.alpha = 0;
Self.isshow = NO;
}];
}
}

else {

if (Self.btnclock) {
Self.btnclock (Clickbutton);
}
}
}

-(void) Didclickbuttonwithblock: (Btnclickblock) Btnclock {
if (Btnclock) {
Self.btnclock = Btnclock;
}

}

-(UIView *) HitTest: (cgpoint) point withevent: (Uievent *) Event {
UIView *view = [Super Hittest:point withevent:event];
if (view = = nil) {
Cgpoint tempoint = [self.btn2 convertpoint:point fromview:self];
Cgpoint Tempoint2 = [Self.btn3 convertpoint:point fromview:self];

if (Cgrectcontainspoint (Self.btn2.bounds, Tempoint))
{
view = SELF.BTN2;
}

if (Cgrectcontainspoint (Self.btn3.bounds, Tempoint2)) {
view = Self.btn3;
}

}
return view;
}

@end

//
Viewcontroller.m
//

#import "ViewController.h"
#import "CUMoreView.h"

@interface Viewcontroller ()

@end

@implementation Viewcontroller

-(void) Viewdidload {
[Super Viewdidload];

Cumoreview *moreview = [[Cumoreview alloc]initwithframe:cgrectmake (200, 200, 60, 120)];
[Moreview didclickbuttonwithblock:^ (UIButton *btn) {
if (Btn.tag = = 10002) {

NSLog (@ "Click the middle button");

}else if (Btn.tag = = 10003) {
NSLog (@ "Click on the button above");
}
}];

[Self.view Addsubview:moreview];


}

-(void) didreceivememorywarning {
[Super didreceivememorywarning];
Dispose of any resources the can be recreated.
}

@end

button is not in the parent attempt, but needs to respond to click events