MainViewController.m

//
//  MainViewController.m
//  Week1
//
//  Created by Tom Gurka on 6/6/14.
//  Copyright (c) 2014 tom. All rights reserved.
//

#import "MainViewController.h"

@interface MainViewController ()
@property (weak, nonatomic) IBOutlet UIView *introView;
@property (weak, nonatomic) IBOutlet UIView *commentImageView;

- (void)willShowKeyboard:(NSNotification *)notification;
- (void)willHideKeyboard:(NSNotification *)notification;

@end



@implementation MainViewController

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self) {
        // Custom initialization
        // Register the methods for the keyboard hide/show events
        [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(willShowKeyboard:) name:UIKeyboardWillShowNotification object:nil];
        [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(willHideKeyboard:) name:UIKeyboardWillHideNotification object:nil];
    }
    return self;
}

- (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view from its nib.
    
    //introView Customizations
    self.introView.layer.cornerRadius = 2;
    
    //un-needed customizations, but required anyways
    //self.introView.layer.backgroundColor = (__bridge CGColorRef)([UIColor whiteColor]);
    //self.introView.layer.shadowColor = [UIColor yellowColor].CGColor;
    //self.introView.layer.shadowOffset = CGSizeMake(10,10);
    //self.introView.layer.shadowOpacity = 1;
    //self.introView.layer.shadowRadius = 10;
    
}

- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

- (void)willShowKeyboard:(NSNotification *)notification {
    NSDictionary *userInfo = [notification userInfo];
    
    // Get the keyboard height and width from the notification
    // Size varies depending on OS, language, orientation
    CGSize kbSize = [[userInfo objectForKey:UIKeyboardFrameBeginUserInfoKey] CGRectValue].size;
    NSLog(@"Height: %f Width: %f", kbSize.height, kbSize.width);
    
    // Get the animation duration and curve from the notification
    NSNumber *durationValue = userInfo[UIKeyboardAnimationDurationUserInfoKey];
    NSTimeInterval animationDuration = durationValue.doubleValue;
    NSNumber *curveValue = userInfo[UIKeyboardAnimationCurveUserInfoKey];
    UIViewAnimationCurve animationCurve = curveValue.intValue;
    
    // Move the view with the same duration and animation curve so that it will match with the keyboard animation
    [UIView animateWithDuration:animationDuration
                          delay:0.0
                        options:(animationCurve << 16)
                     animations:^{
                         self.commentImageView.frame = CGRectMake(0, self.view.frame.size.height - kbSize.height - self.commentImageView.frame.size.height, self.commentImageView.frame.size.width, self.commentImageView.frame.size.height);
                     }
                     completion:nil];
}

- (void)willHideKeyboard:(NSNotification *)notification {
    NSDictionary *userInfo = [notification userInfo];
    
    // Get the animation duration and curve from the notification
    NSNumber *durationValue = userInfo[UIKeyboardAnimationDurationUserInfoKey];
    NSTimeInterval animationDuration = durationValue.doubleValue;
    NSNumber *curveValue = userInfo[UIKeyboardAnimationCurveUserInfoKey];
    UIViewAnimationCurve animationCurve = curveValue.intValue;
    
    // Move the view with the same duration and animation curve so that it will match with the keyboard animation
    [UIView animateWithDuration:animationDuration
                          delay:0.0
                        options:(animationCurve << 16)
                     animations:^{
                         self.commentImageView.frame = CGRectMake(0, self.view.frame.size.height - self.commentImageView.frame.size.height, self.commentImageView.frame.size.width, self.commentImageView.frame.size.height);
                     }
                     completion:nil];
}



@end