Keyboard hide UITableView issue - objective-c

Question

I have a view controller on which I have a table view, in table view each row have text field when i tap on the text field keyboard appear and hide the table view, and then can't see the editing, how can I fix this issue? I put observer that fix the alignment of view controller but it didn't work here is the code..
- (BOOL)textFieldShouldBeginEditing:(UITextField *)textField{
[[NSNotificationCenter defaultCenter] addObserver:self
selector:#selector(keyboardWillShow:)
name:UIKeyboardWillShowNotification
object:nil];
return YES;
}
-(void)keyboardWillShow {
// Animate the current view out of the way
[UIView animateWithDuration:0.3f animations:^ {
self.viewFrame = CGRectMake(0, -160, 320, 480);
}];
}

Answer 1

you have to write below code, it will hide and show keyboard.
====>.h file: declare one UITextField as below:
UITextField *actifText;
====>.m file:
-(void)viewDidAppear:(BOOL)animated
{
// Register notification when the keyboard will be show
[[NSNotificationCenter defaultCenter] addObserver:self
selector:#selector(keyboardWillShow:)
name:UIKeyboardWillShowNotification
object:nil];
// Register notification when the keyboard will be hide
[[NSNotificationCenter defaultCenter] addObserver:self
selector:#selector(keyboardWillHide:)
name:UIKeyboardWillHideNotification
object:nil];
}
- (BOOL)textFieldShouldReturn:(UITextField *)textField
{
[textField resignFirstResponder];
return YES;
}
-(void)viewDidDisappear:(BOOL)animated
{
[[NSNotificationCenter defaultCenter] removeObserver:self];
}
-(void) keyboardWillShow:(NSNotification *)note
{
// Get the keyboard size
CGRect keyboardBounds;
[[note.userInfo valueForKey:UIKeyboardFrameBeginUserInfoKey] getValue: &keyboardBounds];
// Detect orientation
UIInterfaceOrientation orientation = [[UIApplication sharedApplication] statusBarOrientation];
CGRect frame = self.tblName.frame;
// Start animation
[UIView beginAnimations:nil context:NULL];
[UIView setAnimationBeginsFromCurrentState:YES];
[UIView setAnimationDuration:0.3f];
// Reduce size of the Table view
if (orientation == UIInterfaceOrientationPortrait || orientation == UIInterfaceOrientationPortraitUpsideDown)
frame.size.height -= keyboardBounds.size.height;
else
frame.size.height -= keyboardBounds.size.width;
// Apply new size of table view
self.tblName.frame = frame;
// Scroll the table view to see the TextField just above the keyboard
if (self.actifText)
{
CGRect textFieldRect = [self.tblName convertRect:self.actifText.bounds fromView:self.actifText];
[self.tblName scrollRectToVisible:textFieldRect animated:NO];
}
[UIView commitAnimations];
}
- (void)textFieldDidEndEditing:(UITextField *)textField
{
self.actifText = nil;
}
- (void)textFieldDidBeginEditing:(UITextField *)textField
{
self.actifText = textField;
}
-(void) keyboardWillHide:(NSNotification *)note
{
// Get the keyboard size
CGRect keyboardBounds;
[[note.userInfo valueForKey:UIKeyboardFrameBeginUserInfoKey] getValue: &keyboardBounds];
// Detect orientation
UIInterfaceOrientation orientation = [[UIApplication sharedApplication] statusBarOrientation];
CGRect frame = self.tblName.frame;
[UIView beginAnimations:nil context:NULL];
[UIView setAnimationBeginsFromCurrentState:YES];
[UIView setAnimationDuration:0.3f];
// Reduce size of the Table view
if (orientation == UIInterfaceOrientationPortrait || orientation == UIInterfaceOrientationPortraitUpsideDown)
frame.size.height += keyboardBounds.size.height;
else
frame.size.height += keyboardBounds.size.width;
// Apply new size of table view
self.tblName.frame = frame;
[UIView commitAnimations];
}

Answer 2

When you tap on some textfield inside cell, you must know current cell's indexpath, so when keyboard is shown, you can focus it.
-(BOOL) textFieldShouldBeginEditing:(UITextField *)textField
{
UITableViewCell *cell = (UITableViewCell *)[textField superview].superview;
NSIndexPath *idxPath = [table indexPathForCell:cell];
selectedIndex = idxPath.row;//instance variable
return YES;
}
-(void)keyboardWillShow {
[table scrollToRowAtIndexPath:[NSIndexPath indexPathForRow:selectedIndex inSection:0] atScrollPosition:UITableViewScrollPositionTop animated:YES];
}
Also add following line to ViewDidLoad, keeping in mind to observe when keyboard have appeared. If you use UIKeyboardWillShowNotification, first keyboardWillShow will be called followed by textFieldShouldBeginEditing: which is wrong.
[[NSNotificationCenter defaultCenter] addObserver:self
selector:#selector(keyboardWillShow:)
name:UIKeyboardDidShowNotification
object:nil];
and set
textfield.delegate = self;
in cellForRowAtIndexPath while creating textfield. It will call required methods.