swift / how set global variable in if statement

Question

I have the following code and it's working.

if passedValue == "location1" {
        var initialLocation = CLLocation(latitude: 48.8618, longitude: 2.1539)
        centerMapOnLocation(initialLocation)
        loadInitialData()
        }
if passedValue == "location2" {
        var initialLocation = CLLocation(latitude: 52.2398, longitude: 3.3579)
        centerMapOnLocation(initialLocation)
        loadInitialData()
        }

But to be more concise, i write this , but i ve got the following error message : "Use of unresolved identifier 'initial location'". Any idea ?

if passedValue == "location1" {
        var initialLocation = CLLocation(latitude: 48.8618, longitude: 2.1539)
        }
if passedValue == "location2" {
        var initialLocation = CLLocation(latitude: 52.2398, longitude: 3.3579)
        }

centerMapOnLocation(initialLocation)
        loadInitialData()

Caleb · Accepted Answer · 2015-08-04 22:15:29Z

2

Declare var initialLocation: CLLocation! outside and use initialLocation inside.

You probably also want to check if initialLocation is nil before using centerMapOnLocation() just in case.

if initialLocation != nil {
    centerMapOnLocation(initialLocation)
}

Explanation: centerMapOnLocation() can't see initialLocation because it only exists inside of the if statements.

Full code:

var initialLocation: CLLocation!
if passedValue == "location1" {
    initialLocation = CLLocation(latitude: 48.8618, longitude: 2.1539)
}
else if passedValue == "location2" {
    initialLocation = CLLocation(latitude: 52.2398, longitude: 3.3579)
}

if initialLocation != nil {
    centerMapOnLocation(initialLocation)
    loadInitialData()
}

edited Aug 4, 2015 at 22:15

answered Aug 4, 2015 at 22:01

Caleb

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4 Comments

Hugo75 Over a year ago

there's no error message anymore, but when i'm launching, it's crasking and message is fatal error: unexpectedly found nil while unwrapping an Optional value. As if var initialLocation was nil...

Hugo75 Over a year ago

ok, but how could i do that , so ? If initialLocation only exists inside of the if statement ? I have to keep my first code ? no way to be more concise ?

Caleb Over a year ago

I added a complete solution. The problem with the first set of code is that you're repeating code. This way requires an extra check, but does not repeat any code.

Hugo75 Over a year ago

Thx for your help ! i just have let "var" in if statement. After delete them , it's finally working. Thanks again

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