iOS eCommerce App Development with Parse by Liangjun Jiang

Author:Liangjun Jiang
Language: eng
Format: epub, pdf
ISBN: 9781484213186
Publisher: Apress

- (void)viewDidLoad {

[super viewDidLoad];

self.activityIndicatorView.hidden = YES;

}

The helper method -(void)updateIndicator updates the UI. When making a Facebook API request, you want to disable the left bar button item to prevent the user from skipping the login process. You also use this method to show or hide the indicator.

-(void)updateIndicator:(BOOL)shouldEnable{

self.navigationItem.leftBarButtonItem.enabled = !shouldEnable;

(shouldEnable)?[self.activityIndicatorView startAnimating]:[self.activityIndicatorView stopAnimating];

self.activityIndicatorView.hidden = !shouldEnable;

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