Trouble in making hidden button Visible - iphone

Question

Following code i am writing to hide some buttons in viewDidLoad. Here Buttons Are hiding
- (void)viewDidLoad
{
for (int i = 100; i<117; i++)
{
UIButton *smileyButton = (UIButton *)[scroll viewWithTag:i];
UITextField *smileyFields = (UITextField *)[scroll viewWithTag:i];
UIImageView *smileyImage = (UIImageView *)[scroll viewWithTag:i];
smileyFields.hidden = YES;
smileyButton.hidden = YES;
}
}
Now in Following Action am making Buttons Visible. But buttons are not Visible
-(IBAction)editButton:(id)sender
{
for (int i = 100; i<117; i++)
{
UIButton *smileyButton = (UIButton *)[scroll viewWithTag:i];
UITextField *smileyFields = (UITextField *)[scroll viewWithTag:i];
UIImageView *smileyImage = (UIImageView *)[scroll viewWithTag:i];
[smileyFields setHidden:NO]; //TextFields Not Visible
[smileyButton setHidden:NO]; //Buttons Not Visbile
}
}

Answer 1

If you have several views with the same tag, function viewWithTag will return only one view, so if you call this 3 times, you get always the same view.
To do what you want, you could iterate all subviews and check tags:
for (UIView *aView in scrollView.subviews) {
if (aView.tag >= 100 && aView.tag < 117) {
aView.hidden = NO;
}
}

Answer 2

Are you building the view controller in Interface Builder? If so, set the Tag of each thing you want to hide to a different number: try something simple like 1, 2, 3, etc. If you're building in code set the tag property instead. Remember your maximum tag number (let's assume it's 4).
Then add the following to your .h:
- (void)setTaggedViewsHidden:(BOOL)hidden;
and the following to your .m:
- (void)setTaggedViewsHidden:(BOOL)hidden {
for (NSInteger tag = 1; tag <= 4; tag++) {
[scroll viewWithTag:tag].hidden = hidden;
}
}
In your viewDidLoad call it like so:
[self setTaggedViewsHidden:YES];
and in your editButton: selector call it as:
[self setTaggedViewsHidden:NO];
Remember to adjust the code in setTaggedViewsHidden to match the tags you're using. The best way to do this is to #define a constant for the min and max tags and use those in the for loop.