KeyboardHide show

gistfile1.txt

    [[NSNotificationCenter defaultCenter] addObserver:self
                                             selector:@selector(keyboardWillShown:)
                                                 name:UIKeyboardWillShowNotification
                                               object:nil];
    
    [[NSNotificationCenter defaultCenter] addObserver:self
                                             selector:@selector(keyboardWillHide:)
                                                 name:UIKeyboardWillHideNotification
                                               object:nil];}


#pragma mark - keyboard
- (void)keyboardWillShown:(NSNotification *)notification
{
    NSDictionary* info = [notification userInfo];
    CGRect keyboardFrame = [[info objectForKey:UIKeyboardFrameEndUserInfoKey] CGRectValue];
    keyboardFrame = [self.view convertRect:keyboardFrame toView:self.view];
    CGSize keyboardSize = keyboardFrame.size;
    
    NSValue* value = [info objectForKey:UIKeyboardAnimationDurationUserInfoKey];
    NSTimeInterval duration = 0;
    [value getValue:&duration];

    [UIView animateWithDuration:duration animations:^{
        keyboardToolBar.center = CGPointMake(keyboardToolBar.center.x, self.view.bounds.size.height - (keyboardSize.height + keyboardToolBar.frame.size.height) - 20);
    }];
}

- (void) keyboardWillHide:(NSNotification *)notification {
    NSDictionary* info = [notification userInfo];
    NSValue* value = [info objectForKey:UIKeyboardAnimationDurationUserInfoKey];
    NSTimeInterval duration = 0;
    [value getValue:&duration];
    
    [UIView animateWithDuration:duration animations:^{
        keyboardToolBar.center = CGPointMake(keyboardToolBar.center.x, self.view.bounds.size.height + keyboardToolBar.frame.size.height/2);
    }];
    
}