I’m trying to bring my Figma designs into Android Studio using the Relay plugin but keep running into issues. When I paste my Figma URL and try to import with the default theme androidx.compose.material3.MaterialTheme, the process fails.
Error Details
The import process throws a transformation error that reads:
com.google.relay.androidstudio.plugin.importer.FigmaServiceException: Command failed
Location: C:\Users\myuser\AppData\Roaming\Google\AndroidStudio2022.3\plugins\relay_android_studio\bin\win64\figma_to_adin
Error Message: Failed to transform Figma file
Root cause: Type 'Null' is not a subtype of 'Map<String, dynamic>' in type cast
The stack trace indicates issues with:
- VectorNode.fromJson parsing
- InstanceNode.fromJson processing
- FrameNode.fromJson handling
- ContainerNode.childrenFromJson methods
The error seems to occur when the plugin attempts to parse vector graphics or nested components from my Figma file, failing at the JSON conversion step where it expects a Map but receives null values.
My Setup
Current version of Android Studio
Figma file includes standard UI components and icons
Attempting to import using Material3 theme
Has anyone faced this parsing issue before? I’m still learning to use Relay and would appreciate any help in troubleshooting this conversion error.
Check your Figma components for broken variants. I wasted hours on the same crash - turned out some variants had empty properties or missing default states. Relay freaks out when it hits incomplete variant data and throws null casting errors. Go through each component and fill out all required properties. Also got burned by mixing units - some elements used pixels, others percentages. The JSON parser can’t handle inconsistent measurements and chokes. Stick to the same units for spacing, padding, and sizing across your whole file.
This error pops up when your Figma file has components with broken or incomplete data. I’ve hit this before with designs copied from external sources or files with busted component instances. You need to find which elements are throwing the null type cast errors. Duplicate your Figma file and start removing sections bit by bit until you isolate the problem component. Auto-layout containers missing constraints usually cause this, along with components that reference deleted master components. Also check your vector nodes - empty stroke or fill properties show up as null during conversion. Once you find the broken elements, just recreate them from scratch. Don’t bother trying to fix the existing ones.
I encountered a similar issue with the Relay plugin a few months back. The problem typically stems from unsupported elements within the Figma file. To resolve this, I stripped away any complex masks or boolean operations, as well as effects created by third-party plugins, since these can throw off the JSON conversion. Additionally, I checked for components that had missing fills, which may also appear as null values and lead to parsing errors. After simplifying and flattening some of the more complex vector graphics, I found that the import process worked smoothly. It’s also worth examining any locked or hidden layers, as they can interfere with the parsing too.
same crash here last week! my figma file had nested instances causing the null casting issue. flatten complex component overrides first - they mess up relay’s parser. also check for detached instances - they always break json conversion.
This error usually happens when Figma components have invisible or zero-opacity elements that still carry object data. I hit this importing a dashboard design where transparent overlays made the parser crash. Check your layers panel for any 0% opacity elements - delete them completely instead of just hiding them. Complex shapes from boolean operations are another problem. If you’ve got compound paths, try expanding them into single vector objects. The Relay plugin also hates nested transform matrices, so don’t put rotated groups inside auto-layout frames. Clean up your design file by removing unused styles and components from your library, then try importing again.
I’ve hit this exact crash multiple times. VectorNode.fromJson errors usually mean corrupted stroke or fill data in your Figma vectors. Check your icons and illustrations for gradient fills with transparency - they export as null properties during Relay conversion. Another common issue: text that’s been converted to outlines but still has text properties internally. Go through your design and make sure all vector elements have proper fill values. I’ve also seen certain Figma plugins inject metadata that breaks Android Studio’s parser. Try making a fresh copy of your design without any third-party extensions before importing. The transformation process doesn’t handle edge cases in Figma’s data structure well.
Same crash here - your Figma file probably has broken constraints on auto-layout elements. Relay crashes when it hits frames with undefined spacing or padding. Check your components and make sure all auto-layout containers have proper constraints set, not just ‘mixed’ values.