Issues in scroll view - ios

Question

Actually There are four buttons and there is sub buttons for each button.once I click first button the second button have to move down by giving space for sub buttons but its not working even after setting scroll view.
bgsroll=[[UIScrollView alloc]init];
bgsroll.frame=CGRectMake(0, 0, CGRectGetWidth(self.view.frame), CGRectGetHeight(self.view.frame));
bgsroll.userInteractionEnabled=YES;
bgsroll.scrollEnabled=YES;
// bgsroll.backgroundColor=[UIColor grayColor];
bgsroll.showsVerticalScrollIndicator=YES;
bgsroll.contentSize=CGSizeMake(200, 2000);
[self.view addSubview:bgsroll];
happyBtn=[[UIButton alloc]init];
happyBtn.frame=CGRectMake(MainView.frame.size.width*0.12, MainView.frame.size.height*0.1, CGRectGetWidth(self.view.frame)/1.5, 40);
[happyBtn setTitle:#"Happiness" forState:UIControlStateNormal];
[happyBtn setBackgroundColor:[UIColor colorWithRed:0.400f green:0.737f blue:0.761f alpha:1.00f]];
[happyBtn addTarget:self action:#selector(tapHappy:) forControlEvents:UIControlEventTouchUpInside];
[bgsroll addSubview:happyBtn];
happyView=[[UIView alloc]init];
happyView.frame=CGRectMake(MainView.frame.size.width*0.26,CGRectGetHeight(happyBtn.frame)*2.2, CGRectGetWidth(MainView.frame)/1.6, CGRectGetHeight(MainView.frame)/3);
happyView.layer.cornerRadius=8.0;
happyView.layer.borderWidth=0.5;
happyView.layer.borderColor=[[UIColor blueColor]CGColor];
[bgsroll addSubview:happyView];
LettingGo=[[UIButton alloc]init];
LettingGo.frame=CGRectMake(happyView.frame.size.width*0.01,happyView.frame.size.height*0.1, CGRectGetWidth(happyView.frame)/1.05, 50);
[LettingGo setTitle:#"Letting go of negativity" forState:UIControlStateNormal];
LettingGo.titleLabel.numberOfLines=2;
LettingGo.titleLabel.adjustsFontSizeToFitWidth=YES;
[LettingGo setBackgroundColor:[UIColor colorWithRed:0.400f green:0.737f blue:0.761f alpha:1.00f]];
[happyView addSubview:LettingGo];
LivingPresent=[[UIButton alloc]init];
LivingPresent.frame=CGRectMake(happyView.frame.size.width*0.01,LettingGo.frame.size.height*1.4, CGRectGetWidth(happyView.frame)/1.05, 40);
[LivingPresent setTitle:#"Living in the present" forState:UIControlStateNormal];
LivingPresent.titleLabel.adjustsFontSizeToFitWidth=YES;
[LivingPresent setBackgroundColor:[UIColor colorWithRed:0.400f green:0.737f blue:0.761f alpha:1.00f]];
[happyView addSubview:LivingPresent];
happyView.hidden=YES;
CreateBtn=[[UIButton alloc]init];
CreateBtn.frame=CGRectMake(MainView.frame.size.width*0.12, MainView.frame.size.height*0.5, CGRectGetWidth(self.view.frame)/1.5, 40);
[CreateBtn setTitle:#"Happiness" forState:UIControlStateNormal];
[CreateBtn setBackgroundColor:[UIColor colorWithRed:0.400f green:0.737f blue:0.761f alpha:1.00f]];
[CreateBtn addTarget:self action:#selector(tapHappy:) forControlEvents:UIControlEventTouchUpInside];
[bgsroll addSubview:CreateBtn];
-(void)tapHappy:(id)selector{
happyView.hidden=!happyView.hidden;
}

Answer 1

By not working you mean it is not scrolling when the buttons are pushed? I find it easier to scroll elements creating a method that changes the coordinates of elements in subviews through animations. Something like this:
- (void)viewDidLoad {
expandButton1 = [UIButton buttonWithType:UIButtonTypeCustom];
[expandButton1 addTarget:self action:#selector(expandButtonPressed:) forControlEvents:UIControlEventTouchUpInside];
}
- (void)expandButtonPressed:(id)sender{
if (expanded == NO) {
expanded = YES;
[UIView animateWithDuration:0.5 delay:0.0 options:UIViewAnimationOptionRepeat animations:^{
[UIView setAnimationRepeatCount:1];
image1.frame = CGRectMake(image1.frame.origin.x, image1.frame.origin.y+200.0f, image1.frame.size.width, image1.frame.size.height);
image.frame2 = CGRectMake(image2.frame.origin.x, image2.frame.origin.y+200.0f, image2.frame.size.width, image2.frame.size.height);
expandButton2.frame = CGRectMake(expandButton2.frame.origin.x, expandButton2.frame.origin.y+200.0f, expandButton2.frame.size.width, expandButton2.frame.size.height);
expandButton3.frame = CGRectMake(expandButton3.frame.origin.x, expandButton3.frame.origin.y+200.0f, expandButton3.frame.size.width, expandButton3.frame.size.height);
}completion:nil];
}