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iosswiftnsdata

How to deal with NSData contentsOfURL EXC_BREAKPOINT error

I am trying to obtain NSData from a server using contentsOfURL. When the iPhone is connected to wifi, it works fine. But when not connected to wifi, my app crashes with an EXC_BREAKPOINT message. How can I handle or circumvent this issue of crashing when not connected?

do {
    let varOption = try NSData(contentsOfURL: NSURL(string: urlToRequest)!, options:NSDataReadingOptions.DataReadingMappedIfSafe)
} catch {
    print("error encountered")
}

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Solution

  • Is there a requirement to use NSData's contentsOfURL? Why not make an async web request using NSURLSession?

    NSURLSession.sharedSession().dataTaskWithURL(NSURL(string: urlToRequest)!) { (data: NSData?, response: NSURLResponse?, error: NSError?) -> Void in
    // if data && !error, do the thing
}.resume()