Assigning to 'AppDelegate *' from incompatible type 'id<UIApplicationDelegate>'
ios, iphone, objective-c
Solution
since you know they equal, add a cast to let the compiler know
AppDelegate* app = (AppDelegate*)[[UIApplication sharedApplication]delegate];
since this might come up in Swift too
let app = UIApplication.shared.delegate as! AppDelegate
Problem
In my project it says Assigning to 'AppDelegate *' from incompatible type 'id'. What exactly is this? Why did this warning occur? I have declared in .m ``` AppDelegate *appdev; ``` and in viewDidLoad ``` { appdev = [[UIApplication sharedApplication]delegate]; <= warning here } ``` I want to hide this warning. What should I do? Thanks in advance.