iOS - How can I preload the keyboard?

Question

The Problem

In most iPhone apps, there\'s a quite a bit of delay the first time that the keyboard is presented (presumably creating the keyboard takes quite a bit of o

Answer 1

Once a user complain my app of the slow loading keyboard. Here is a little trick to disable the keyboard animation:

- (void)viewDidLoad
{
    [super viewDidLoad];

    // ...

    [[NSNotificationCenter defaultCenter] addObserver:self
                                             selector:@selector(willShowKeyboard:)
                                                 name:UIKeyboardWillShowNotification
                                               object:nil];

    [[NSNotificationCenter defaultCenter] addObserver:self
                                             selector:@selector(didShowKeyboard:)
                                                 name:UIKeyboardDidShowNotification
                                               object:nil];

    // ...
}


- (void)willShowKeyboard:(NSNotification *)notification
{
    [UIView setAnimationsEnabled:NO];
}

- (void)didShowKeyboard:(NSNotification *)notification
{
    [UIView setAnimationsEnabled:YES];
}

It may not answer the question directly, as the keyboard itself is in the main UI for my example and caching is not the option to me. Nevertheless, the overall responsiveness is improved.