IMPORTANT: In July 2025, we stopped releasing new versions of KTX modules, and we removed the KTX libraries from the Firebase Android BoM (v34.0.0). If you use KTX APIs from the previously released KTX modules, we recommend that you migrate your app to use KTX APIs from the main modules instead. For details, see the FAQ about this initiative.

ImagenSubjectReference

@PublicPreviewAPI
public final class ImagenSubjectReference extends ImagenReferenceImage

java.lang.Object
↳	com.google.firebase.ai.type.ImagenReferenceImage
	↳	com.google.firebase.ai.type.ImagenSubjectReference

A reference image for generating an image with a specific subject

Summary

Public constructors
`ImagenSubjectReference( @NonNull ImagenInlineImage image, Integer referenceId, String description, ImagenSubjectReferenceType subjectType )`

Inherited fields

From com.google.firebase.ai.type.ImagenReferenceImage

`final ImagenInlineImage`	`image`
`final Integer`	`referenceId`

Public constructors

ImagenSubjectReference

public ImagenSubjectReference(
    @NonNull ImagenInlineImage image,
    Integer referenceId,
    String description,
    ImagenSubjectReferenceType subjectType
)

Parameters
`@NonNull ImagenInlineImage image`	the image of the subject
`Integer referenceId`	the reference ID you can use to reference this subject in your prompt
`String description`	the description you can use to reference this subject in your prompt
`ImagenSubjectReferenceType subjectType`	the type of the subject