Скачать или смотреть How to Effectively Add Permissions to AndroidManifest.xml for Your Unity3D Android Plugin

Discover how to seamlessly add necessary permissions to AndroidManifest.xml for your Unity3D Android plugin without requiring manual edits from users.
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Introduction

If you're developing a Unity plugin for Android, you might run into challenges when it comes to managing permissions. Specifically, you might need to add crucial permissions such as INTERNET, CHANGE_WIFI_STATE, ACCESS_WIFI_STATE, CHANGE_NETWORK_STATE, and ACCESS_NETWORK_STATE. While you may initially think to add these permissions directly to the AndroidManifest.xml in your plugin package, you could face error messages indicating that permissions are required.

In this guide, we’ll explore how to properly integrate these permissions into your Unity build and ensure your plugin works smoothly across different projects without requiring extra manual work from users.

Understanding the Problem

When you add permissions to AndroidManifest.xml in your plugin's directory, Unity might not pick them up automatically. This results in security exceptions, such as:

[[See Video to Reveal this Text or Code Snippet]]

Such issues can arise because Unity's build process merges various AndroidManifest.xml files, and if your permissions are not available in the correct manifest, your application will fail to access certain functionalities.

Case in Point

In this scenario, the error stems from trying to check WiFi status without the necessary permissions being recognized during runtime, despite them being declared in the plugin's manifest.

The Solution

After diving deep into the issue, the solution is simpler than expected: you can create an additional AndroidManifest.xml in a specific directory within your Unity project. Here’s how to do it step-by-step.

Step 1: Navigate to Your Assets Folder

Open your Unity project.

Go to the Assets directory.

Step 2: Create the Required Directory Structure

Create a folder structure like this: Assets/Plugins/Android.

This is where you'll create a new AndroidManifest.xml file.

Step 3: Create or Modify the AndroidManifest.xml

Within the Assets/Plugins/Android folder, create a new file named AndroidManifest.xml.

Add the necessary permissions by copying the following template, adjusting as needed:

[[See Video to Reveal this Text or Code Snippet]]

Make sure to replace "com.example.unitywifidirectlibrary" with your actual package name.

Step 4: Build and Test

Once you've made these changes, rebuild your Unity project. The Unity build system will now merge this new AndroidManifest.xml with the default manifest Unity creates, correctly including your permissions.

Important Note

Although the above method is effective, if you have multiple plugins that need to declare permissions, you might run into conflicts. In such cases, managing the merging process can become cumbersome, so keep track of which permissions each plugin requires.

Conclusion

By following these steps, you can seamlessly integrate necessary permissions into your Unity project without burdening the end-user with manual edits to their files. This approach not only enhances usability but also promotes better collaboration across different projects using your plugin.

If you have further questions or would like to share your experiences with Unity and Android development, feel free to leave a comment below!