Fetching contact no crashes when there is no phone no assigned to the contact

Question

I am trying to read the contact phone no. The below code works fine if the number is available but if there are no phone no assigned to the contact , it is crashing. Can Anu let me know how to handle this.

((currentContact.phoneNumbers.first?.value)! as CNPhoneNumber).stringValue

You should see http://stackoverflow.com/questions/32170456/what-does-fatal-error-unexpectedly-found-nil-while-unwrapping-an-optional-valu — rmaddy, Jan 31 '17 at 01:37

score 3 · Accepted Answer · answered Jan 31 '17 at 01:31

3

You should learn about optional values in Swift...

if let contactPhoneNumber = currentContact.phoneNumbers.first?.value?.stringValue {
    // do something with the value
} 
else {
    // the value isn't there 
}

answered Jan 31 '17 at 01:31

pbush25

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No problem! Optionals are paramount to using Swift though so if you don't understand this (optional chaining and if...let) I highly suggest looking more deeply into the literature. – pbush25 Jan 31 '17 at 01:37

Fetching contact no crashes when there is no phone no assigned to the contact

1 Answers1