On click of a button a textfield has to be displayed? - objective-c

Question

I have a button and a textfield. Button is just below the textField. Now when I click on the button a new textfield should be displayed below the first text field and the frame of the button should also be changed. When I have tried this it worked for the first time but when I click a second time the new textfield is not displaying and the button frame is also not changing. Help me with this issue.
The code that i have written is:
-(void)onboardCertificatesAddBtnBtnTap
{
int x, y;
if (y =585, x=632) {
_boardCertificationField= [[UITextField alloc]initWithFrame:CGRectMake(5, y+50, self.scrollView.frame.size.width/2-25, 40)];
_boardCertificationField.font = [UIFont systemFontOfSize:17];
_boardCertificationField.borderStyle=UITextBorderStyleRoundedRect;
[_scrollView addSubview:_boardCertificationField];
_expDateField = [[UITextField alloc]initWithFrame:CGRectMake(220, y+50, self.scrollView.frame.size.width/2-40, 40)];
_expDateField .font = [UIFont systemFontOfSize:17];
_expDateField .borderStyle=UITextBorderStyleRoundedRect;
[_scrollView addSubview:_expDateField];
_boardCertificatesAddBtn.frame = CGRectMake(5, x+50, 20, 20);
[_boardCertificatesAddBtn setImage:[UIImage imageNamed:#"Add1.png"] forState:UIControlStateNormal];
[_scrollView addSubview:_boardCertificatesAddBtn];
[_boardCertificatesAddBtn addTarget:self action:#selector(onboardCertificatesAddBtnBtnTap) forControlEvents:UIControlEventTouchUpInside];
y=y+50;
x=x+50;
}
else {
_boardCertificationField= [[UITextField alloc]initWithFrame:CGRectMake(5, y+50, self.scrollView.frame.size.width/2-25, 40)];
_boardCertificationField.font = [UIFont systemFontOfSize:17];
_boardCertificationField.borderStyle=UITextBorderStyleRoundedRect;
[_scrollView addSubview:_boardCertificationField];
_expDateField = [[UITextField alloc]initWithFrame:CGRectMake(220, y+50, self.scrollView.frame.size.width/2-40, 40)];
_expDateField .font = [UIFont systemFontOfSize:17];
_expDateField .borderStyle=UITextBorderStyleRoundedRect;
[_scrollView addSubview:_expDateField];
_boardCertificatesAddBtn.frame = CGRectMake(5, x+50, 20, 20);
[_boardCertificatesAddBtn setImage:[UIImage imageNamed:#"Add1.png"] forState:UIControlStateNormal];
[_scrollView addSubview:_boardCertificatesAddBtn];
[_boardCertificatesAddBtn addTarget:self action:#selector(onboardCertificatesAddBtnBtnTap) forControlEvents:UIControlEventTouchUpInside];
y=y+50;
x=x+50;
}
}

Answer 1

Declare x and in #implementation ViewController block
like
#implementation Viewcontroller
{
int x,y;
}
and write other code as
-(void)onboardCertificatesAddBtnBtnTap
{
if (y =585, x=632) {
_boardCertificationField= [[UITextField alloc]initWithFrame:CGRectMake(5, y+50, self.scrollView.frame.size.width/2-25, 40)];
_boardCertificationField.font = [UIFont systemFontOfSize:17];
_boardCertificationField.borderStyle=UITextBorderStyleRoundedRect;
[_scrollView addSubview:_boardCertificationField];
_expDateField = [[UITextField alloc]initWithFrame:CGRectMake(220, y+50, self.scrollView.frame.size.width/2-40, 40)];
_expDateField .font = [UIFont systemFontOfSize:17];
_expDateField .borderStyle=UITextBorderStyleRoundedRect;
[_scrollView addSubview:_expDateField];
_boardCertificatesAddBtn.frame = CGRectMake(5, x+50, 20, 20);
[_boardCertificatesAddBtn setImage:[UIImage imageNamed:#"Add1.png"] forState:UIControlStateNormal];
[_scrollView addSubview:_boardCertificatesAddBtn];
[_boardCertificatesAddBtn addTarget:self action:#selector(onboardCertificatesAddBtnBtnTap) forControlEvents:UIControlEventTouchUpInside];
y=y+50;
x=x+50;
}
else {
_boardCertificationField= [[UITextField alloc]initWithFrame:CGRectMake(5, y+50, self.scrollView.frame.size.width/2-25, 40)];
_boardCertificationField.font = [UIFont systemFontOfSize:17];
_boardCertificationField.borderStyle=UITextBorderStyleRoundedRect;
[_scrollView addSubview:_boardCertificationField];
_expDateField = [[UITextField alloc]initWithFrame:CGRectMake(220, y+50, self.scrollView.frame.size.width/2-40, 40)];
_expDateField .font = [UIFont systemFontOfSize:17];
_expDateField .borderStyle=UITextBorderStyleRoundedRect;
[_scrollView addSubview:_expDateField];
_boardCertificatesAddBtn.frame = CGRectMake(5, x+50, 20, 20);
[_boardCertificatesAddBtn setImage:[UIImage imageNamed:#"Add1.png"] forState:UIControlStateNormal];
[_scrollView addSubview:_boardCertificatesAddBtn];
[_boardCertificatesAddBtn addTarget:self action:#selector(onboardCertificatesAddBtnBtnTap) forControlEvents:UIControlEventTouchUpInside];
y=y+50;
x=x+50;
}