The functions exposed to blueprints are in the class UAndroidAPITemplateFunctions (in the files Classes/AndroidAPITemplateFunctions.h and Private/AndroidAPITemplateFunctions.cpp). Let’s make an actor which calls this function in its Begin Play event, then we put this actor in a scene, and send it to the Android phone (or tablet).Īs expected, a Toast text is shown at the beginning.īefore we go any further, some explanations must be made. This function simply shows a Toast message with the given text parameter. Right now, this plugin contain only one function (callable from a blueprint): Show Toast under the category Android API Template. At this point we might have to restart (again) the engine. Let’s click on the “Enabled” checkbox to enable the plugin.

Once the engine is started and the plugin is built, let’s go in “Settings”, then “Plugins”: under the “Mobile” category (at the end) we must see the “AndroidAPITemplate” plugin. Now, we need to start (or restart) the engine so it can build the plugin. Now, we have a “Plugins/AndroidAPITemplate” folder inside the game directory. Just download this archive, create a “Plugins” directory next to your “Content” directory and unzip the archive inside this “Plugins” Directory. Unreal Engine, at least in its current version, doesn’t offer a template for a Android plugin. Let’s not lose time! We want to make this plugin quickly (we only have ten minutes if you look at the title of this article), so we will use a template for an Android plugin.

Fortunately, it’s really easy (if we follow this guide)! It’s easier if you’re familiar with the plugin system of UE4, but even if you’re not, this tutorial should be accessible (you should be confident with Android and Java development though). Let’s say we’re developing a game for mobile and we want to use one of the device functionalities, like reading the data from the light sensor, get the data from the contacts, or send a SMS: UE4 doesn’t provide an API for this, so we have no choice, we have to make this API ourselves.

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