I'm using the below code to shift a view and my tableview up when my keyboard is activated. When the keyboard is closed however, it takes the upView a solid 2 seconds after the keyboard closes to return to where it was (the tableView on the other hand, is instant). Why is this happening?
- (void)viewDidLoad {
[super viewDidLoad];
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWillChange:) name:UIKeyboardWillShowNotification object:nil];
}
- (void)keyboardWillChange:(NSNotification *)notification {
NSDictionary* keyboardInfo = [notification userInfo];
NSValue* keyboardFrameBegin = [keyboardInfo valueForKey:UIKeyboardFrameEndUserInfoKey];
CGRect keyboardFrameBeginRect = [keyboardFrameBegin CGRectValue];
UITabBarController *tabBarController = [UITabBarController new];
CGFloat tabBarHeight = tabBarController.tabBar.frame.size.height;
self.keyboardHeight = keyboardFrameBeginRect.size.height - tabBarHeight;
}
- (void) animateTextView:(BOOL) up
{
const int movementDistance = self.keyboardHeight;
const float movementDuration = 0.2f;
int movement= movement = (up ? -movementDistance : movementDistance);
[UIView beginAnimations: @"anim" context: nil];
[UIView setAnimationBeginsFromCurrentState: YES];
[UIView setAnimationDuration: movementDuration];
self.upView.frame = CGRectOffset(self.upView.frame, 0, movement);
[UIView setAnimationDidStopSelector:@selector(afterAnimationStops)];
[UIView commitAnimations];
self.tableView.frame = CGRectOffset(self.tableView.frame, 0, movement);
[UIView setAnimationDidStopSelector:@selector(afterAnimationStops)];
[UIView commitAnimations];
}
- (void)textViewDidBeginEditing:(UITextView *)textView
{
[self animateTextView:YES];
}
- (void)textViewDidEndEditing:(UITextView *)textView
{
[self animateTextView:NO];
}
UPDATED CODE
.m
- (void)handleKeyboard:(NSNotification*)aNotification{
NSDictionary* info = [aNotification userInfo];
NSValue* value = [info objectForKey:UIKeyboardAnimationDurationUserInfoKey];
NSTimeInterval duration = 3;
[value getValue:&duration];
if (aNotification.name == UIKeyboardWillHideNotification) {
/** KEYBOARD HIDE **/
[UIView animateWithDuration:0 animations:^{ self.upView.frame = CGRectOffset(self.upView.frame, 0, self.keyboardHeight); self.tableView.frame = CGRectOffset(self.tableView.frame, 0, self.keyboardHeight); } completion:^(BOOL finished) {}];
[self moveCustomView:NO duration:duration];
NSLog(@"CLOSED!");
}
if (aNotification.name == UIKeyboardWillShowNotification) {
/** KEYBOARD SHOW **/
[UIView animateWithDuration:0 animations:^{ self.upView.frame = CGRectOffset(self.upView.frame, 0, -self.keyboardHeight); self.tableView.frame = CGRectOffset(self.tableView.frame, 0, -self.keyboardHeight); } completion:^(BOOL finished) {}];
[self moveCustomView:YES duration:duration];
}
}
- (void)moveCustomView:(BOOL)move duration:(NSTimeInterval)time{
}
This issue might be with the animation duration, so you can get the keyboard showing and hiding animation duration from the -(void)handleKeyboard:(NSNotification *)notification {}
and also handle the showing and hiding your custom view inside the same function. Add the following code to your viewDidLoad
function
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(handleKeyboard:) name:UIKeyboardWillHideNotification object:nil];
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(handleKeyboard:) name:UIKeyboardWillShowNotification object:nil];
Handle keyboard actions and UI changes
- (void)handleKeyboard:(NSNotification*)aNotification{
NSDictionary* info = [aNotification userInfo];
NSValue* value = [info objectForKey:UIKeyboardAnimationDurationUserInfoKey];
NSTimeInterval duration = 0;
[value getValue:&duration];
if (aNotification.name == UIKeyboardWillHideNotification) {
/** KEYBOARD HIDE **/
//calculate your view frames and handle UI changes
/*
.
.
.
.
.
*/
[self moveCustomView:NO duration:duration];
}
if (aNotification.name == UIKeyboardWillShowNotification) {
/** KEYBOARD SHOW **/
//calculate your view frames and handle UI changes
/*
.
.
.
.
.
*/
[self moveCustomView:YES duration:duration];
}
}
- (void)moveCustomView:(BOOL)move duration:(NSTimeInterval)time{
}