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@braking
Last active November 14, 2018 18:46
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Adjust content insets of a tableview when keyboard opens.
- (void)viewDidLoad
{
[super viewDidLoad];
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(keyboardWillShow:)
name:UIKeyboardWillShowNotification
object:nil];
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(keyboardWillHide:)
name:UIKeyboardWillHideNotification
object:nil];
}
- (void)dealloc
{
[[NSNotificationCenter defaultCenter] removeObserver:self];
}
- (void)keyboardWillShow:(NSNotification *)notification
{
CGSize keyboardSize = [notification.userInfo[UIKeyboardFrameBeginUserInfoKey] CGRectValue].size;
NSNumber *rate = notification.userInfo[UIKeyboardAnimationDurationUserInfoKey];
UIEdgeInsets contentInsets;
if (UIInterfaceOrientationIsPortrait([[UIApplication sharedApplication] statusBarOrientation])) {
contentInsets = UIEdgeInsetsMake(0.0, 0.0, (keyboardSize.height), 0.0);
} else {
contentInsets = UIEdgeInsetsMake(0.0, 0.0, (keyboardSize.width), 0.0);
}
[UIView animateWithDuration:rate.floatValue animations:^{
self.tableView.contentInset = contentInsets;
self.tableView.scrollIndicatorInsets = contentInsets;
}];
[self.tableView scrollToRowAtIndexPath:self.editingIndexPath atScrollPosition:UITableViewScrollPositionTop animated:YES];
}
- (void)keyboardWillHide:(NSNotification *)notification
{
NSNumber *rate = notification.userInfo[UIKeyboardAnimationDurationUserInfoKey];
[UIView animateWithDuration:rate.floatValue animations:^{
self.tableView.contentInset = UIEdgeInsetsZero;
self.tableView.scrollIndicatorInsets = UIEdgeInsetsZero;
}];
}
@bryanaamot
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bryanaamot commented Oct 29, 2017

Should be UIKeyboardFrameEndUserInfoKey. In iOS11, the height is 0 when you use UIKeyboardFrameBeginUserInfoKey! Also, on iPhoneX the height is 75 pts more in portrait mode. So, you are better off adjusting a constraint of the tableview that is pinned to the bottom of the superview because the keyboard is pinned to the bottom of the superview too. Then you don't need to change the tableview contentInset at all. This works on all devices.

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