If you are building an app that does not use Swift but embeds content such as a framework that does, Xcode will not include these libraries in your app. As a result, your app will crash upon launching with an error message looking as
On iOS 9 and above, if UIApplicationDelegate's application:openURL:options:is implemented, application:openURL:sourceApplication:annotation: will not get called. Call FBSDKApplicationDelegate's application:openURL:sourceApplication:annotation: from UIApplicationDelegate's application:openURL:options: - (BOOL)application:(UIApplication *)app openURL:(NSURL *)url options:(NSDictionary<NSString*, id&
APK files are compressed archive files, which contain other files and folders. This is typically what an end user or a penetration tester would get and install them by accepting the required permissions and then use them.