Shift UITextField and UITableView up when keyboard comes up - ios

Question

I have a view with 1. Navigation bar 2.UITableView 3. UITextView.
When I start to edit the textView, a keyboard comes up and I need to animate the TextView and TableView up. I've implemented: https://stackoverflow.com/a/8704371/1808179, but that animated the entire view up, covering the navigation bar.
I tried individually animating the textView like:
- (void)keyboardWillShow:(NSNotification*)notification
{
CGRect chatTextFieldFrame = CGRectMake(chatTextField.frame.origin.x,chatTextField.frame.origin.y-218,chatTextField.frame.size.width,chatTextField.frame.size.height);
[UIView animateWithDuration:0.5 animations:^{ chatTextField.frame = chatTextFieldFrame;}];
}
But it doesn't animate, and it won't synchronously animate alongside the TableView.
What is the best way to animate the tableView and textView up without overlaying the navigation bar?

Answer 1

I generally use the follow snippet when tackling this problem.
Using a UITableView (which is just a subclass of UIScrollView) you should set contentInsets rather then just changing the frame each time. This is especially much nicer in iOS7 with a translucent keyboard.
- (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 name:UIKeyboardWillShowNotification object:nil];
[[NSNotificationCenter defaultCenter] removeObserver:self name:UIKeyboardWillHideNotification object:nil];
}
#pragma mark - Keyboard Notifications
- (void)keyboardWillShow:(NSNotification *)notification;
{
NSDictionary *userInfo = [notification userInfo];
NSValue *keyboardBoundsValue = [userInfo objectForKey:UIKeyboardFrameEndUserInfoKey];
CGFloat keyboardHeight = [keyboardBoundsValue CGRectValue].size.height;
CGFloat duration = [[userInfo objectForKey:UIKeyboardAnimationDurationUserInfoKey] floatValue];
NSInteger animationCurve = [[userInfo objectForKey:UIKeyboardAnimationCurveUserInfoKey] integerValue];
UIEdgeInsets insets = [[self tableView] contentInset];
[UIView animateWithDuration:duration delay:0. options:animationCurve animations:^{
[[self tableView] setContentInset:UIEdgeInsetsMake(insets.top, insets.left, keyboardHeight, insets.right)];
[[self view] layoutIfNeeded];
} completion:nil];
}
- (void)keyboardWillHide:(NSNotification *)notification;
{
NSDictionary *userInfo = [notification userInfo];
CGFloat duration = [[userInfo objectForKey:UIKeyboardAnimationDurationUserInfoKey] floatValue];
NSInteger animationCurve = [[userInfo objectForKey:UIKeyboardAnimationCurveUserInfoKey] integerValue];
UIEdgeInsets insets = [[self tableView] contentInset];
[UIView animateWithDuration:duration delay:0. options:animationCurve animations:^{
[[self tableView] setContentInset:UIEdgeInsetsMake(insets.top, insets.left, 0., insets.right)];
[[self view] layoutIfNeeded];
} completion:nil];
}

Answer 2

If any are wondering, this is how I did it:
- (void)keyboardWillShow:(NSNotification*)notification
{
CGRect chatTableViewFrame = CGRectMake(0,65,320,chatTableView.frame.size.height-180);
[UIView animateWithDuration:0.3 animations:^{ chatTableView.frame = chatTableViewFrame;}];
CGRect chatTextFieldFrame = CGRectMake(chatTextField.frame.origin.x,chatTextField.frame.origin.y-170,chatTextField.frame.size.width,chatTextField.frame.size.height);
[UIView animateWithDuration:0.3 animations:^{ chatTextField.frame = chatTextFieldFrame;}];
[self.chatTableView scrollToRowAtIndexPath:[NSIndexPath indexPathForRow:self.chat.count-1 inSection:0] atScrollPosition:UITableViewScrollPositionBottom animated:YES];
}
And vice-versa for keyboardWillHide.

Answer 3

Write this line at desired events.
self.view.frame = [[UIScreen mainScreen] applicationFrame];