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CHAPTER 8 ANSWERS

1. You can trigger a manually created segue by first setting the identifier of the segue in Interface Builder and then calling the performSegueWithIdentifier:sender method of UIViewController using that identifier.
2. The Core Foundation framework.
3. You can set the Network Activity Indicator to be visible with the following code:

   [UIApplication sharedApplication].networkActivityIndicatorVisible = YES;

4. The webView:didFailLoadWithError: method.
5. The openURL method.