A custom iOS ImageView that creates scratch card effects by covering surfaces with swipeable mulch.
MCScratchImageView is a custom iOS ImageView component that implements scratch card functionality. It allows developers to add interactive scratch-off layers to their apps where users can swipe away a top image to reveal content underneath. It solves the need for engaging, interactive UI elements without requiring low-level drawing code.
iOS developers building apps that need interactive reveal animations, promotional scratch cards, or gamified interfaces. Particularly useful for marketing apps, games, or educational applications with interactive content.
Developers choose MCScratchImageView because it provides a ready-to-use, customizable scratch card component with progress tracking and easy integration. Unlike building from scratch, it handles all the touch interaction and drawing logic while offering flexible customization through delegate patterns.
A custom ImageView that is used to cover the surface of other view like a scratch card, user can swipe the mulch to see the view below.
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Supports both code initialization and Storyboard setup, as shown in the README with examples for init() and init(frame:), making it flexible for different development workflows.
Includes delegate methods like mcScratchImageView(_:didChangeProgress:) to monitor scratch progress, enabling features like auto-scratch at 80% completion based on user-defined thresholds.
Allows adjustment of scratch area size via the setMaskImage method with spotRadius parameter, providing control over interaction feel without modifying low-level drawing code.
Offers a single-purpose component for scratch-off effects without complex custom drawing, as emphasized in the philosophy section, reducing boilerplate for common use cases.
The README specifies Swift 4.0, which is older and may require migration efforts or cause compatibility issues with newer Swift versions and Xcode updates.
Tips in the README warn against directly setting properties like image or spotRadius, which can lead to errors and limit customization flexibility for advanced users.
There is no mention of SwiftUI compatibility, making it less suitable for modern iOS projects that rely on declarative UI frameworks, as it only supports UIKit-based interfaces.