Why Can't I List Target Platforms in Unity? Resolving Android SDK Path Issues.

Unable to List Target Platforms: Resolving Android SDK Path Issues

Installing or updating Unity often leads to problems with listing target platforms during the build process, primarily due to incorrect Android SDK path configurations. Here's how to rectify this issue:

Current Solutions:

Unity 2017.1 and Later:

This issue is likely resolved in Unity 2017.1 and subsequent versions.

Latest Solution for Unity 2017 and Prior:

1. Windows: Download and unzip "tools_r25.2.3-windows.zip."
2. macOS: Download and unzip "tools_r25.2.3-macosx.zip."
3. Add the unzipped SDK path to Unity's "Edit" > "Preferences" > "External Tools" > "SDK" field.

If That Fails:

Uninstall SDK Tools 25 and Android SDK Tools 26, along with SDK Platform-Tools and SDK Tools, and use lower version numbers.

Older Solutions:

1. Ensure No Spaces in SDK Path: Create a directory named "AndroidSDK" in the "C" drive and copy your "Android-sdk" folder into it. The path should be: "C:/AndroidSDK/Android-sdk."
2. Update SDK Path in Unity: Navigate to Unity's "Edit" > "Preferences" > "External Tools" > "SDK" and update the path. Attempt an Android build.
3. Install Latest Unity Version: Download and install the most recent Unity version.
4. Re-download and Install SDK: Copy the downloaded SDK to "C:/AndroidSDK/Android-sdk."
5. Update SDK Path Again in Unity: Navigate to "Edit" > "Preferences" > "External Tools" > "SDK."
6. Build for Android and Update: Building should trigger an error and prompt you to update the SDK. Click "Update Android SDK."
7. Check If Resolved: The SDK should update automatically, resolving the issue.

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