UIAlertController if iOS 8, otherwise UIAlertView

Question

I want to conform to the UIAlertController used in iOS 8 since UIAlertView is now deprecated. Is there a way that I can use this without breaking support for iOS 7? Is there

Answer 1

As others have already mentioned - always check whether a feature exists. I believe the safest approach is following:

if (NSClassFromString(@"UIAlertController")) {
    // use UIAlertController
} else {
    // use UIAlertView
}

With the obvious risk of entering a class name with a typo. :)

From documentation of NClassFromString:

[Returns] The class object named by aClassName, or nil if no class by that name is currently loaded. If aClassName is nil, returns nil.

Availability iOS (2.0 and later)