I have a scanner that is reading text into a UITextField, looks like it is one character at a time. So every 1/2 second or so I want to check the value of that UITextField so I can grab the value.
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I have a scanner that is reading text into a UITextField, looks like it is one character at a time. So every 1/2 second or so I want to check the value of that UITextField so I can grab the value.
Two options:
1) Set the text field’s delegate, then catch the changes as they happen in the shouldChangeCharactersInRange method of said delegate.
2) Use an NSTimer object.
In most situations, the first method is superior, but if you want to check every so often rather than catching the changes as they happen, you will need the NSTimer.