Databases
StackOverflow2013
Postsdbo
POUITextField - Prevent user from typing non-standard characters (like Emoticons)
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POUITextField - Prevent user from typing non-standard characters (like Emoticons)
    primarykey
    data
    text
    <p>My app creates and stores <code>EKEvents</code> into the standard Calendar database, however, I've found that if I use an emoticon as the "notes" for an event, it causes a crash when trying to read the event out of the Calendar.</p> <p>I don't <em>want</em> or <em>need</em> the use of emoticons in the <code>event.notes</code>. I just happened to be testing and was kind of shocked when it let me save the event. (The emoticons even show up in the Calendar itself)</p> <p>So I think my problem can be solved one of 2 way, neither of which I've been able to figure out.</p> <p><strong>1) Can I disable or hide the custom keyboard button?</strong> &lt;--I'd prefer this solution</p> <p><img src="https://i.stack.imgur.com/dCAEx.jpg" alt="enter image description here"></p> <p><strong>2) If not, how do I create a character set that includes all of the possible characters in all of the standard keyboards to check against when making sure the user does not type an emoticon?</strong></p> <p>I've tried using some of the standard character sets to check against, like <code>alphanumericCharacterSet</code>, but using that, I can't type in spaces.</p> <p>Here's the code I'm using so far, to check against the character the user is typing:</p> <pre><code>- (BOOL)textField:(UITextField *)theTextField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string { if (string.length == 0) { return YES; } NSCharacterSet *myCharSet = [NSCharacterSet alphanumericCharacterSet]; for (int i = 0; i &lt; [string length]; i++) { unichar c = [string characterAtIndex:i]; if ([myCharSet characterIsMember:c]) { return YES; } } UIAlertView *av = [[UIAlertView alloc] initWithTitle:@"Invalid Input" message:@"Oops! You can't use that character." delegate:self cancelButtonTitle:@"Dismiss" otherButtonTitles:nil]; [av show]; return NO; } </code></pre> <p><strong><em>EDIT: Clarification on the error</em></strong></p> <p>There is no error, only a crash. My app saves calendar events, and displays them in a list to the user. The user can then mark the event as "Paid" or "Unpaid" at which time I append a string to the <code>.notes</code> property of the event " - Paid". This is so when I reload the table, if the event is paid, it displays a specific icon to the user. The crash happens when the saved even has an emoticon as the <code>.notes</code> property, and I try to append the <code>.notes</code>.</p>
    singulars
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. USjhilgert00
    1. USjhilgert00
    plurals
    1. PL
      singulars
      1. LTLinked
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    1. VO
      singulars
      1. POUITextField - Prevent user from typing non-standard characters (like Emoticons)
      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
      singulars
      1. POUITextField - Prevent user from typing non-standard characters (like Emoticons)
      1. USraceworm
      1. VTFavorite
    1. COWhat's the error you get if there is an Emoji character in the event notes? Your best solution may be to solve that problem.
      singulars
      1. POUITextField - Prevent user from typing non-standard characters (like Emoticons)
      1. USrmaddy
    2. CO@rmaddy its not an error, he simply dont want it, that clean text will be poluted with funny icons
      singulars
      1. POUITextField - Prevent user from typing non-standard characters (like Emoticons)
      1. USraceworm
    3. CO@rmaddy, see my edit. I explained exactly what's happening.
      singulars
      1. POUITextField - Prevent user from typing non-standard characters (like Emoticons)
      1. USjhilgert00
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload