VM-Mapping Solution for Cross-Scene Data Synchronization in Mobile Applications

This technical document details the VM-Mapping solution for resolving data synchronization challenges in mobile applications. It addresses fragmented business scenarios and inconsistent UI states by implementing an annotation-driven object mapping framework that decouples data models from UI layers.

The solution introduces a two-level HashMap structure to maintain data-UI relationships, using business unique identifiers (mappingSpace+PrimaryKey) for cross-scene synchronization. Key components include Mappable annotations for class identification, PrimaryKey for unique field marking, and MappableKey for field mapping.

VM-Mapping eliminates manual synchronization between data models and UI components, automatically propagating changes across scenes. The architecture supports complex view hierarchies and multiple platforms (Android/Flutter) without requiring scene-specific adaptations. Performance considerations include reflection optimizations and single-threaded mapping center operations to prevent UI thread blocking.

Compared to alternatives like EventBus or global data models, VM-Mapping offers superior scalability and reduced maintenance overhead. The solution has been successfully deployed in a video application to eliminate cross-scene data inconsistency issues.