Godot AdMob - Migration Guide

Assists with migrating your Godot AdMob integration between different plugin versions in GDScript and C#.

Migrate from v4.x to v5.x

Steps

1. Remove SMART_BANNER Constants: Replace any references to AdSize.SMART_BANNER or SmartBanner with Anchored Adaptive Banner sizes.
2. Update Fallbacks: Ensure that any legacy layouts using -1, -1 size fallback values are replaced with the recommended Anchored Adaptive Banner sizes.
3. Android App ID Migration & config.gd Removal:
   • Extract Android App ID: Read the APPLICATION_ID constant from res://addons/admob/android/config.gd (if upgrading an existing project).
   • Save to Project Settings: Transfer the Android App ID into project.godot under [admob] section as general/android/app_id="your-app-id" (or via Project Settings > General > Admob).
   • Remove config.gd: config.gd is deprecated and removed in v5; all settings are now managed via Project Settings.
4. AdPosition Class Migration: AdPosition.Values enum is replaced by AdPosition static instances (e.g. AdPosition.TOP or AdPosition.custom(x, y)). Update your code references.
5. iOS Export Cleanup & App ID Migration:
   • Delete AdMob .gdip files & binaries: Delete all legacy poing-godot-admob*.gdip files and the res://ios/plugins/poing-godot-admob/ directory inside res://ios/plugins/ (do not delete the outer plugins/ folder if other non-AdMob plugins exist). Version 5 injects frameworks dynamically during export, so leaving old .gdip files and binaries will cause Multiple commands produce ... build errors in Xcode.
   • Transfer iOS App ID: Move the iOS App ID (formerly set in Gad Application Identifier in Export Presets or .gdip) into project.godot under [admob] section as general/ios/app_id="your-app-id" (or via Project Settings > General > Admob).
   • Clear Export Presets: Clear the Gad Application Identifier field and uncheck legacy AdMob plugin checkboxes in your iOS Export Preset settings to avoid duplicate injection.
6. Update Gradle Dependencies: Clean and rebuild your Android plugin template if necessary to fetch the GMA Next-Gen SDK dependencies.
7. Review Initialization Defaults: By default, initialization and ad loading optimizations are enabled. If you run into threading issues, toggle Disable Initialization Optimization and Disable Ad Loading Optimization in the Godot project settings under Admob > General > Android.
8. Download v5 Platform Binaries: In the Godot Editor, open AdMob Manager and click Download & Install for both Android and iOS to download the new v5.0.0 native libraries. The export plugin will block project export if the installed native binaries are missing or legacy/v4 due to version mismatch protection.
9. Asynchronous SDK Initialization: On Android (GMA Next-Gen SDK), initialization via MobileAds.initialize() is strictly asynchronous. You must wait for the callback (using OnInitializationCompleteListener) to fire before loading any ads. Attempting to load ads prior to initialization completion will throw an exception.

Migration References

Size Migration

Removed Constant (v4.x)	Recommended Alternative (v5.x)
AdSize.SMART_BANNER (GDScript)	AdSize.get_current_orientation_anchored_adaptive_banner_ad_size(AdSize.FULL_WIDTH)
AdSize.SmartBanner (C#)	AdSize.GetCurrentOrientationAnchoredAdaptiveBannerAdSize(AdSize.FullWidth)

AdPosition Migration

Removed Enum (v4.x)	Recommended Class Instance (v5.x)
AdPosition.Values.TOP (GDScript)	AdPosition.TOP
AdPosition.Values.Top (C#)	AdPosition.Top
Custom positions unsupported	AdPosition.custom(x, y) (GDScript) / AdPosition.Custom(x, y) (C#)