UILabel and UITableView CGrectMake reframing - iPhone

Question

I have a NavigationControllers A and a UIViewController B . A has a label and below that is the UITableView. When navigate from A to B and navigate back from B to A, I have my label and table view reframed. I have tried setting the frame through code in ViewWillAppear method. Yet i dont have it in its exact frame. What is the basic thing i'm missing here?

[self.labelUser setFrame:CGRectMake(71, 73, 179, 20)];
[self.customersTable setFrame:CGRectMake(0, 102, 320, 421)];

Autolayout being used.. But yet this i'm not able to resolve. I have attached the images for the same

![enter image description here][2] ![enter image description here][3]

EDIT : Code for KVO to check frame values and to change the frame back to the original

in ViewDidLoad

[labelUser addObserver:self forKeyPath:@"frame" options:(NSKeyValueObservingOptionNew | NSKeyValueObservingOptionOld) context:NULL];

and then

- (void)observeValueForKeyPath:(NSString *)keyPath
                  ofObject:(id)object
                    change:(NSDictionary *)change
                   context:(void *)context {

    if ([keyPath isEqual:@"frame"]) {
        NSLog(@"changed %@ %@", NSStringFromCGRect(labelUser.frame), NSStringFromCGRect(customersTable.frame));
        if (![NSStringFromCGRect(labelUser.frame) isEqual:NSStringFromCGRect(CGRectMake(71, 73, 179, 20))]) {

            [labelUser removeObserver:self forKeyPath:@"frame"];
            [self.labelUser setFrame:CGRectMake(71, 73, 179, 20)];
            [self.customersTable setFrame:CGRectMake(0, 102, 320, 421)];

        }

    }
}

pushing the view like this

-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{

    [self performSegueWithIdentifier:@"segueToOrd" sender:self];

}

Also tried the KVO method.. But no luck... Any suggestions??

Story board image

Answer 1

Assuming you are using iOS 7 , this is because the from XCode 5 and above AUTOLAYOUT has been added by default to projects. So the frames in Storyboard are eventually converted to frames which are constant. So if you change frames it might take effect for that moment but when view loads again it would take the frames back from storyboard and not the frames you have changed.

So the solution for your problem is you have to manually add constraints and only change constraint constants and not the frames.Apple is going to ditch frames very soon,so start learning about Autolayout.

PS : Your code will work as you intended if you uncheck "use Autolayout" option in inspector of your storyboard.