iOS Development: Moving a TabBar to the Bottom of a Screen Regardless of Size

-(void)viewDidLayoutSubviews

{

    

    UIScreen* screen = [[UIScreen screens] objectAtIndex:0];

    

    CGRect screenBounds = screen.bounds;

    

    self.tabBar.frame = CGRectMake(0,  screenBounds.size.height - self.tabBar.frame.size.height, self.tabBar.frame.size.width, self.tabBar.frame.size.height);

    

    [self.view addSubview:tabBar];

    

}

iPhone: Building a View Dynamically Using Screen Size as the Parameter

  if ((int)[[UIScreen mainScreen] bounds].size.height == 568)

    {

        // This is iPhone 5 screen

        NSLog(@"iPhone 5: viewDidAppear: picker");

        

        labelRect = CGRectMake(20.0, 79.0, 167.0, 21.0);

        address1Label = [[UILabel alloc] initWithFrame:labelRect];

        address1Label.text = @"Address 1";

        

        [self.view addSubview:address1Label];

     }

else 

{

        

        // This is iPhone 4/4s screen

        NSLog(@"iPhone 4: viewDidAppear: picker");

        

        labelRect = CGRectMake(20.0, 79.0, 280.0, 30.0);

        address1TextField = [[UITextField alloc] initWithFrame:labelRect];

        address1TextField.returnKeyType=UIReturnKeyDone;

        [address1TextField addTarget:self action:@selector(hideKeyBoard:)

                    forControlEvents:UIControlEventEditingDidEndOnExit];

        address1TextField.placeholder = @" Address 1";

}