![]() The reason I specifically want to update to a Unity 2022 version is because of the end of this thread: I'm using Unity Hub (3.4.1) on my iMac (Ventura 13.1), and I'm trying to download a 2022 Unity version with Android SDK, but as the screenshot shows, the download fails (this occurs with every Unity 2022 version): Defines a Marshal function pointer to receive callback method from the native side.I believe this problem has been discussed before, but never truly resolved. The parameters of the function pointer can be also represented as pointers for unmanaged types. For example, we can convert a C# delegate to an unmanaged function pointer, then pass a C# method to the native side. This class provides a collection of methods for allocating unmanaged memory, copying unmanaged memory blocks, and converting managed to unmanaged types. On iOS, callback across the boundary between C# and C++ is usually done by the Marshal class. Handling the login result requires a kind of asynchronous callback, as well as passing data between native platforms and Unity game. For example, the login API has the signature below on iOS: // Login method signature in LINE SDK Swift.ĬompletionHandler completion: (Result) -> Void) -> LoginProcess? But the LINE SDK also provides a few asynchronous APIs, for login and other network-related operations. It's easy to call the API in a synchronous way, returning a value or not. ![]() Var androidObject = new AndroidJavaObject("") For Android we use the AndroidJavaObject representation to invoke a method from LINE SDK native: // iOS interface ![]() Handling asynchronous operationsįor iOS, we use the DllImport directive to import an exposed interface from Objective-C++ to Unity C#. To communicate with the native LINE SDK, we need to build a bridge between the Unity C# world and the "native" world (Swift for iOS, Java for Android). Unity has extensive support for native plugins. Remember - the full source code is publicly available on GitHub. Integration for LINE SDK on iOS (Swift).Let's go over the implementation of LINE SDK for Unity. The basic structure of the LINE SDK for Unity is as below: Familiarity: We provide model and API definitions at the C# level, allowing Unity users to stick to C# conventions while using our SDK, regardless of the differences between iOS and Android platforms.Using the native SDK, you can handle these parts in a native way correctly. Leveraging native capabilities: The login feature of the LINE SDK requires a range of system platform features such as logging in with the web view when the LINE app is not installed, and handling data transfers between different apps.Using the native SDK not only ensures project quality, it also makes new features and fixes in the native SDK be synchronized to the Unity SDK. LINE SDK has been open sourced with a high adaptation rate and has been well received. Lower maintenance cost: We can reuse the code of the existing native SDK to reduce maintenance cost.Unlike reimplementing the entire SDK, wrapping the existing functionality brings these advantages: Overviewįor the Unity SDK, we decided to wrap the existing (iOS and Android) native SDK to provide users with an easy-to-use C# interface. Also, read our setup guide to learn how to use the LINE SDK in your Unity games. Like our SDK for iOS and Android, the LINE SDK for Unity is open source - find the code on GitHub. This article discusses the approach we took in wrapping an existing SDK for Unity, as well as some specific topics for the LINE SDK. The LINE SDK for Unity helps game developers use LINE SDK more easily in their next innovative game title. That's why we recently released LINE SDK for another important platform, Unity. Games make up more than 50% of the apps in the App Store and Google Play, and generate the most revenue by far. ![]() ![]() In addition to app developers, we realized we needed to support mobile game developers as well. The SDK provides a modern way to integrate LINE Login and several APIs into your app, helping you create an engaging and personalized user experience. Last year at LINE Dev Day 2018, we released our new open source LINE SDK for iOS and Android. I am Wei Wang from the LINE SDK development team. ![]()
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