Super slow lag/delay on initial keyboard animation of UITextField Super slow lag/delay on initial keyboard animation of UITextField ios ios

Super slow lag/delay on initial keyboard animation of UITextField


Before you implement any exotic hacks to get around this problem, try this: stop the debug session, close the app from multitasking, unplug your device from the computer and run the app normally by tapping its icon. I have seen at least two cases in which the delay only occurs while the device is plugged in.


So the problem is NOT just limited to the first install as I had previously thought, but happens every time the app is launched. Here's my solution that solves the issue completely.

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {  // Preloads keyboard so there's no lag on initial keyboard appearance.  UITextField *lagFreeField = [[UITextField alloc] init];  [self.window addSubview:lagFreeField];  [lagFreeField becomeFirstResponder];  [lagFreeField resignFirstResponder];  [lagFreeField removeFromSuperview];}


Yeah, I also got a few seconds delay on the latest iPhone 4s. Don't panic. For some reasons, it only happens the first time the app is loaded from Xcode in Debug. When I did Release, I don't get the delay. Just forget it...