http://blog.slaunchaman.com/2010/02/26/cocoa-touch-tutorial-stripping-non-alphanumeric-characters-on-entry-in-a-uitextfield/ Mac tips, iPhone applications, and the like Mon, 28 Nov 2011 11:12:56 +0000 hourly 1 http://wordpress.org/?v=3.3.1 http://blog.slaunchaman.com/2010/02/26/cocoa-touch-tutorial-stripping-non-alphanumeric-characters-on-entry-in-a-uitextfield/comment-page-1/#comment-860 Cam Thu, 15 Apr 2010 00:41:46 +0000 http://blog.slaunchaman.com/?p=216#comment-860 Thank you for the reply Jeff. I will give that a try! Thank you for the reply Jeff. I will give that a try!

]]> http://blog.slaunchaman.com/2010/02/26/cocoa-touch-tutorial-stripping-non-alphanumeric-characters-on-entry-in-a-uitextfield/comment-page-1/#comment-855 Jeff Kelley Tue, 06 Apr 2010 18:05:57 +0000 http://blog.slaunchaman.com/?p=216#comment-855 Cam, in this method you have access to the <code>UITextField</code>, so you can do anything you want with it. Check its text's length and ensure that it doesn't go over 10. You can do it yourself by changing the string manually, or by implementing <code>-textField:shouldChangeCharactersInRange:replacementString:</code>. You can check the location and length of the <code>NSRange</code> in that method and compare it to the <code>length</code> property of the text. If the result would be more than 10 characters long, return <code>NO</code>. Cam, in this method you have access to the UITextField, so you can do anything you want with it. Check its text’s length and ensure that it doesn’t go over 10. You can do it yourself by changing the string manually, or by implementing -textField:shouldChangeCharactersInRange:replacementString:. You can check the location and length of the NSRange in that method and compare it to the length property of the text. If the result would be more than 10 characters long, return NO.

]]> http://blog.slaunchaman.com/2010/02/26/cocoa-touch-tutorial-stripping-non-alphanumeric-characters-on-entry-in-a-uitextfield/comment-page-1/#comment-854 Cam Tue, 06 Apr 2010 17:54:23 +0000 http://blog.slaunchaman.com/?p=216#comment-854 Thank you for this great tutorial. If one wanted to not only limit the textfield to alphanumerics but also limit the textfield's length, say to 10 characters. How would they go about that? Thank you for this great tutorial. If one wanted to not only limit the textfield to alphanumerics but also limit the textfield’s length, say to 10 characters. How would they go about that?

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