iOS Keyboard Delaying Animations - ios

Question

I'm currently trying to develop a chat feature for an iOS app. I've been playing around with the keyboard and everything seems to be working other than the animation.
When I press the keyboard the animation to move the view up is delayed by a second. I've made a video of it happening here.
My code is as follows:
[[NSNotificationCenter defaultCenter] addObserver:self selector:#selector(keyboardDidShow:) name:UIKeyboardDidShowNotification object:nil];
[[NSNotificationCenter defaultCenter] addObserver:self selector:#selector(keyboardDidHide:) name:UIKeyboardDidHideNotification object:nil];
The selectors:
- (void)keyboardDidShow: (NSNotification *) notif{
NSDictionary *info = [notif userInfo];
CGSize kbSize = [[info objectForKey:UIKeyboardFrameEndUserInfoKey] CGRectValue].size;
_currentKeyboardHeight = kbSize.height;
// Calculate free space between navigation bar and keyboard top to reposition the chat bubbles.
float areaHeight = screenHeight - (_currentKeyboardHeight + _footer.frame.size.height + 100);
if([Infrastructure_Connection ConnectivityCheck]){
[UIView animateWithDuration:0.2 delay:0 options:0 animations:^{
[_ChatBar setFrame:CGRectMake(posX, screenHeight-(_currentKeyboardHeight+height), width, height)];
bubbleTableMain.frame = CGRectMake(0,100, self.view.frame.size.width,areaHeight);
} completion:^(BOOL finished) {
[bubbleTableMain scrollBubbleViewToBottomAnimated:YES];
}];
} else {
[RegisterUser AlertMessage:#"Offline" Message:#"You're currently in offline mode."];
}
}
- (void)keyboardDidHide: (NSNotification *) notif{
int whereKeyboardEnds = self.view.frame.size.height-(195);
[UIView animateWithDuration:0.2 delay:0.0 options:0 animations:^{
bubbleTableMain.frame = CGRectMake(0,100, self.view.frame.size.width,whereKeyboardEnds);
[_ChatBar setFrame:CGRectMake(posX, 474, width, height)];
} completion:^(BOOL finished) { }];
}
The delays are on 0.0 and still it delays it by a second. Anyone have any idea as to how, for example, Whatsapp make their keyboard interaction so smooth and in time with the keyboard appearing?
=================== Edit ===================
So I've changed the following code and now for some reason, it doesn't run the animation. I've debugged it and it calls the selector correctly. But doesn't animate:
[[NSNotificationCenter defaultCenter] addObserver:self selector:#selector(keyboardWillShow:) name:UIKeyboardWillShowNotification object:nil];
[[NSNotificationCenter defaultCenter] addObserver:self selector:#selector(keyboardWillHide:) name:UIKeyboardWillHideNotification object:nil];
and
- (void)keyboardWillShow:(NSNotification *)note {
UIViewAnimationCurve animationCurve = [[[note userInfo] valueForKey: UIKeyboardAnimationCurveUserInfoKey] intValue];
NSTimeInterval animationDuration = [[[note userInfo] valueForKey: UIKeyboardAnimationDurationUserInfoKey] doubleValue];
[UIView beginAnimations:nil context: nil];
[UIView setAnimationCurve:animationCurve];
[UIView setAnimationDuration:animationDuration];
[_ChatBar setFrame:CGRectMake(0, 10, _ChatBar.frame.size.width, _ChatBar.frame.size.height)];
[UIView commitAnimations];
}

Answer 1

You are using the keyboardDidShow notification which is called after the keyboard has finished its animation. Use the keyboardWillShow notification instead. That should do the trick.