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[jdpmdphd]

If your are using UITextView, and have header interface implementing <UITextViewDelegate> the answer is different than for a textfield. Often it is best to have a button above the keyboard to dismiss it, but you can trigger return from the DONE/return key:

- (BOOL)textView:(UITextView *)textView shouldChangeTextInRange:(NSRange)range 
 replacementText:(NSString *)text
{
int charINTtyped=0;
	if([text length]>0){
		charINTtyped=(int)[text characterAtIndex:0];
        }
        if(charINTtyped==10){
             [textView resignFirstResponder]; //dismiss the keyboard
             return NO;//don't insert return into textView.text
        }
        return YES;
}