Right aligned UITextField spacebar does not advance cursor in iOS 7

Question

In my iPad app, I noticed different behavior between iOS 6 and iOS 7 with UITextFields.

I create the UITextField as follows:

UIButton *theButton = (U         


        

Answer 1

My following solution also takes care of the problem with the cursor jumping to the end when typing a space in the middle or beginning of the string. Also pasting a string is now processed correctly too.

I also put in a check for email address fields and other checks, but the interesting part is the last part. It works perfectly for me, have yet to find a problem with it.

You can directly copy/paste this in your project. Don't forget to implement the didBeginEditing and didEndEditing to replace the spaces with non-breaking spaces and back!

- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string
{
    if (textField.textAlignment != NSTextAlignmentRight) //the whole issue only applies to right aligned text
        return YES;

    if (!([string isEqualToString:@" "] || string.length > 1)) //string needs to be a space or paste action (>1) to get special treatment
        return YES;

    if (textField.keyboardType == UIKeyboardTypeEmailAddress) //keep out spaces from email address field
    {
        if (string.length == 1)
            return NO;
        //remove spaces and nonbreaking spaces from paste action in email field:
        string = [string stringByReplacingOccurrencesOfString:@" " withString:@""];
        string = [string stringByReplacingOccurrencesOfString:@"\u00a0" withString:@""];
    }

    //special treatment starts here
    string = [string stringByReplacingOccurrencesOfString:@" " withString:@"\u00a0"];
    UITextPosition *beginning = textField.beginningOfDocument;
    textField.text = [textField.text stringByReplacingCharactersInRange:range withString:string];
    UITextPosition *start = [textField positionFromPosition:beginning offset:range.location+string.length];
    UITextPosition *end = [textField positionFromPosition:start offset:range.length];
    UITextRange *textRange = [textField textRangeFromPosition:start toPosition:end];
    [textField setSelectedTextRange:textRange];

    return NO;
}