UIbutton not clickable

Question

File uploaded to Github (very small)

A UIView class LeftMenuView is added to the viewcontroller.
A top view and a bottom view are added to the LeftMenuView.
A button is added to each. These two buttons cannot be clicked.
userInteractionEnabled is YES,
button’s frame is displayed in View Debugging and does not exceed the parent view.
Part of the code:
ViewController:

- (void)viewDidLoad {
    [super viewDidLoad];
    LeftMenuView *leftView=[LeftMenuView createLeftMenuView];
    leftView.userInteractionEnabled=YES;
    self.leftView=leftView;
    [self.view addSubview:leftView];
    //nightButton
    UIButton *nightButton=[self.leftView viewWithTag:6];
    [nightButton addTarget:self action:@selector(touchButton:) forControlEvents:UIControlEventTouchUpInside];
    leftView.userInteractionEnabled=YES;
//    [self.leftView addSubview:nightButton];
    //set
    UIButton *settingButton=[self.leftView viewWithTag:4];
    [settingButton addTarget:self.leftView action:@selector(push) forControlEvents:UIControlEventTouchUpInside];
    }
    

LeftMenuView: This is a UIview. It seems that events should not be added to the view, right? ? ?

-(instancetype)initWithFrame:(CGRect)frame
{
    self=[super initWithFrame:frame];
    self.backgroundColor=[UIColor colorWithRed:26/256.f green:31/256.f blue:36/256.f alpha:0.7];
    [self addHeaderView];
    [self addButton];
    return self;
}
#pragma mark -add view to menu view
-(void)addHeaderView
{
    UIView *headViewUp=[[UIView alloc]init];
    headViewUp.userInteractionEnabled=YES;
    headViewUp.frame=CGRectMake(0, 0, yScreenWidth/2, 114);
    headViewUp.backgroundColor=ColorWithRGB(26, 31, 36);
    headViewUp.backgroundColor=[UIColor redColor];
    self.headViewUp=headViewUp;
    [self addSubview:headViewUp];
    UIView *headViewDown=[[UIView alloc]init];
    headViewDown.userInteractionEnabled=YES;
    headViewDown.frame=CGRectMake(0, yScreenHeight-50, yScreenWidth/2, 50);
    headViewDown.backgroundColor=ColorWithRGB(26, 31, 36);
    self.headViewDown=headViewDown;
    [self addSubview:headViewDown];
}
-(void)addButton
{
    UIButton *settingButton=[self setFrame:CGRectMake(yScreenWidth*2/6, 64, yScreenWidth/6, 50 ) title:@"设置" image:@"Menu_Icon_Setting"];
    settingButton.userInteractionEnabled=YES;
    settingButton.tag=4;
    [self resizeTextAndImageInButton:settingButton];
    [self.headViewUp addSubview:settingButton];
    UIButton *nightButton=[self setFrame:CGRectMake(yScreenWidth/4, 0, yScreenWidth/4, 50 ) title:@"白天" image:@"Menu_Day"];
    nightButton.tag=6;
    [self.headViewDown addSubview:nightButton];
}
-(UIButton *)setFrame:(CGRect)frame title:(NSString *)title image:(NSString *)imageName
{
    UIButton *button=[[UIButton alloc]initWithFrame:frame];
    [button setTitle:title forState:UIControlStateNormal];
    [button setImage:[UIImage imageNamed:imageName] forState:UIControlStateNormal];
    button.titleLabel.font=[UIFont systemFontOfSize:8];
    button.contentHorizontalAlignment=UIControlContentHorizontalAlignmentCenter;
    return button;
}
-(void)resizeTextAndImageInButton:(UIButton *)button
{
    [button setTitleEdgeInsets:UIEdgeInsetsMake(button.imageView.frame.size.height ,-button.imageView.frame.size.width, 0.0,0.0)];
    [button setImageEdgeInsets:UIEdgeInsetsMake(-10, 0.0,0.0, -button.titleLabel.bounds.size.width)];
}