BSZoomGridScrollView
A SwiftUI and UIKit grid scroll view for iOS that supports zooming and touch tracking on image arrays.
What is BSZoomGridScrollView?
BSZoomGridScrollView is an iOS UI framework that provides a grid scroll view capable of displaying arrays of images with zooming and touch tracking functionality. It solves the problem of creating interactive, gesture-responsive grid interfaces in both SwiftUI and UIKit environments. The framework handles complex UI interactions like long press and drag gestures out of the box.
iOS developers building apps that require interactive image grids, such as photo galleries, browsing interfaces, or any application needing zoomable and scrollable grid layouts. It is particularly useful for those working with both SwiftUI and UIKit.
Developers choose BSZoomGridScrollView for its seamless integration with both SwiftUI and UIKit, reducing the need to build custom grid solutions from scratch. Its unique selling point is the combination of zoom, touch tracking, and gesture-driven image selection in a single, easy-to-implement component.
Overview
Fun GridScrollView written in SwiftUI + Combine, bridging between UIKit
Use Cases
Best For
- Building interactive photo galleries with zoom and scroll
- Creating image browsing interfaces similar to the Observable app
- Implementing grid-based UI with touch and gesture tracking
- Developing SwiftUI apps that require complex grid layouts
- Adding zoomable grid scroll views to UIKit projects
- Prototyping apps with interactive image grids quickly
Not Ideal For
- Projects needing to display non-image content (e.g., text, custom views) in a grid
- Applications requiring high-performance scrolling with thousands of dynamic items
- Teams prioritizing long-term support and extensive documentation over quick prototyping
- Use cases where grid layout must be dynamically updated or animated beyond basic configuration
Pros & Cons
Pros
Fully supports both SwiftUI and UIKit with separate code examples, enabling unified development across modern iOS projects without rewriting UI layers.
Provides zoom, touch tracking, and gesture-driven selection (long press and drag) automatically, as shown in the GIF demo and code snippets, reducing custom gesture handling.
Allows configuration of columns, rows, and zoom effects through simple parameters like numberOfColumns and powerOfZoomBounce, demonstrated in the SwiftUI example.
With minimal code—just importing and initializing—developers can add a functional grid scroll view, highlighted in the 'At a Glance' snippet with few steps.
Cons
Designed specifically for UIImage arrays (itemsToZoom parameter), limiting use for grids with other data types like text or videos without modifications.
The README states it was 'done for my fun,' suggesting potential lack of ongoing updates, bug fixes, or professional support, which could be risky for production apps.
Example usage shows high column counts (e.g., 200 columns), but without optimizations like lazy loading, it might struggle with large image sets, leading to memory or scrolling issues.
Missing common grid library features such as dynamic item insertion/deletion, advanced animations, or accessibility hooks, focusing only on basic zoom and selection.
Frequently Asked Questions
Related Projects
GPU ImageAn open source iOS framework for GPU-based image and video processing
FastImageCacheiOS library for quickly displaying images while scrolling
GPUImage2GPUImage 2 is a BSD-licensed Swift framework for GPU-accelerated video and image processing.
AlamofireImageAlamofireImage is an image component library for Alamofire
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