Untitled

how to validate a string whether its alphanumeric or number

NSString *string = myTextField.text;

NSCharacterSet *alphanumericSet = [NSCharacterSet alphanumericCharacterSet];

NSCharacterSet *numberSet = [NSCharacterSet decimalDigitCharacterSet];

BOOL isAplhaNumericOnly= [[string stringByTrimmingCharactersInSet:alphanumericSet] isEqualToString:@""] && ![[string stringByTrimmingCharactersInSet:numberSet] isEqualToString:@""];

       

NSLog(@"isAplhaNumericOnly: %d",isAplhaNumericOnly);

       

if(isAplhaNumericOnly) {

    return;

}