CODEWITHSUNDEEP
iphoneobjective-c
aherlambang
aherlambang

Reputation: 14418

UITextField scroll when keyboard present issue

I was following the code here

#pragma mark UITextFieldDelegate

- (BOOL)textFieldShouldReturn:(UITextField *)textField {

    [textField resignFirstResponder];

    return YES;

}

-(void)textFieldDidBeginEditing:(UITextField *)sender
{
    if ([sender isEqual:password])
    {
        //move the main view, so that the keyboard does not hide it.
        if  (self.view.frame.origin.y >= 0)
        {
            [self setViewMovedUp:YES];
        }
    }
}

//method to move the view up/down whenever the keyboard is shown/dismissed
-(void)setViewMovedUp:(BOOL)movedUp
{
    [UIView beginAnimations:nil context:NULL];
    [UIView setAnimationDuration:0.5]; // if you want to slide up the view

    CGRect rect = self.view.frame;
    if (movedUp)
    {
        // 1. move the view's origin up so that the text field that will be hidden come above the keyboard 
        // 2. increase the size of the view so that the area behind the keyboard is covered up.
        rect.origin.y -= kOFFSET_FOR_KEYBOARD;
        rect.size.height += kOFFSET_FOR_KEYBOARD;
    }
    else
    {
        // revert back to the normal state.
        rect.origin.y += kOFFSET_FOR_KEYBOARD;
        rect.size.height -= kOFFSET_FOR_KEYBOARD;
    }
    self.view.frame = rect;

    [UIView commitAnimations];
}


- (void)keyboardWillShow:(NSNotification *)notif
{
    //keyboard will be shown now. depending for which textfield is active, move up or move down the view appropriately

    if ([password isFirstResponder] && self.view.frame.origin.y >= 0)
    {
        [self setViewMovedUp:YES];
    }
    else if (![password isFirstResponder] && self.view.frame.origin.y < 0)
    {
        [self setViewMovedUp:NO];
    }
}


- (void)viewWillAppear:(BOOL)animated
{
    // register for keyboard notifications
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWillShow:) 
                                                 name:UIKeyboardWillShowNotification object:self.view.window]; 
}

- (void)viewWillDisappear:(BOOL)animated
{
    // unregister for keyboard notifications while not visible.
    [[NSNotificationCenter defaultCenter] removeObserver:self name:UIKeyboardWillShowNotification object:nil]; 
}

It actually moves the view up when I tap on the password UITextField, however after I finish it did not scroll down again. What am I missing here?

Upvotes: 0

Views: 2387

Answers (3)

swapnil
swapnil

Reputation: 25

Try 

-(void)textFieldDidEndEditing:(UITextField *)sender
{
     // Your code to scroll down your view.
}

It written and not tested yet.

Upvotes: 1

Yi Jiang
Yi Jiang

Reputation: 4038

I'm not sure how to fix your code issue. But, there is a easy way. You may wanna try the highly recommended "TPKeyboardAvoidingScrollView": https://github.com/michaeltyson/TPKeyboardAvoiding

Upvotes: 0

Xiao
Xiao

Reputation: 883

You implemented keyboardWillShow. You also have to implement keyboardwillHide.

Check this post:

Making a UITableView scroll when text field is selected

This worked great for me.

Upvotes: 1

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