objective-c adding UILabel to center - objective-c

Question

hi i'm begginer in objective-c and i want to learn how i can make UILabel in center of screen
this is my code:
XXRootViewController.h
#interface XXRootViewController : UIViewController{
UILabel *title; } #end
XXRootViewController.m
#import "XXRootViewController.h"
#implementation XXRootViewController {
NSMutableArray *_objects;
}
- (void)loadView {
[super loadView];
self.view = [[[UIView alloc]
initWithFrame:[[UIScreen mainScreen] applicationFrame]]
autorelease];
self.view.backgroundColor = [UIColor whiteColor];
title = [[UILabel alloc] initWithFrame:CGRectMake(300,200,400,200)];
title.text = #"This is Sasuke's first app :)";
[self.view addSubview:title];
}
#end

Answer 1

Try this code i make some changes in you code
self.view = [[UIView alloc]
initWithFrame:[UIScreen mainScreen].bounds];
self.view.backgroundColor = [UIColor whiteColor];
title = [[UILabel alloc] initWithFrame:CGRectMake(0,0,[UIScreen mainScreen].bounds.size.width - 50,200)];
title.text = #"This is Sasuke's first app :)";
title.textAlignment = NSTextAlignmentCenter;
title.center = self.view.center;
[self.view addSubview:title];

Answer 2

You just need to set frame in center of the screen ...
change your one line code with it -
title = [[UILabel alloc] initWithFrame:CGRectMake(self.view.frame.size.width/2 - 200,self.view.frame.size.height/2 - 100,400,200)];
now your label is shown in the center of screen .. This will help you change the frame according to your use...

Answer 3

Has Hardik Thakkar said, the best way would be to use the center method. That way, even if your label would grow, it will always be centred.
UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(300,200,400,200)];
label.text = #"something";
label.center = self.view.center; (this should always be you superview)
Now, even if your label is bigger than the size you were expecting, it will always be centred