Open Settings warning issue in Xcode 6.3: Comparison of address of 'UIApplicationOpenSettingsURLString' not equal to a null pointer is always true

Question

I\'m not inventing the wheel. In iOS8, to open Settings from inside the app I\'m using this code:

BOOL canOpenSettings = (&UIApplicationOpenSettingsURLSt         


        

Answer 1

I believe this is because &UIApplicationOpenSettingsURLString is never nil in this version so you can just directly use the following to launch settings:

NSURL *url = [NSURL URLWithString:UIApplicationOpenSettingsURLString];
[[UIApplication sharedApplication] openURL:url];

Answer 2

SOLVED:

The problem is related with the Deployment Target in the App.

If the Target is 8.0 or above, the comparison will be always true because you are always over 8.0. So we do not need the if verification:

NSURL *url = [NSURL URLWithString:UIApplicationOpenSettingsURLString];
[[UIApplication sharedApplication] openURL:url];

Another option can be:

NSURL *settings = [NSURL URLWithString:UIApplicationOpenSettingsURLString];
if ([[UIApplication sharedApplication] canOpenURL:settings])
{
    [[UIApplication sharedApplication] openURL:settings];
}