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What’s the right way to use dependency injection mobile at scale?
Asked on Nov 28, 2025
Answer
Dependency injection (DI) in mobile development enhances modularity, testability, and scalability by decoupling component creation from their usage. In mobile apps, frameworks like Dagger for Android or Resolver for Swift can be used to implement DI effectively.
Example Concept: Dependency injection in mobile applications involves providing dependencies to classes from external sources rather than creating them internally. This is achieved by using DI frameworks like Dagger in Android, which generates code to manage dependencies at compile time, or Resolver in Swift, which uses service locators to resolve dependencies. These frameworks help manage object lifecycles, reduce boilerplate code, and facilitate testing by allowing mock implementations to be injected during testing phases.
Additional Comment:
- In Android, Dagger and Hilt are popular choices for DI, offering compile-time safety and integration with Android components.
- For iOS, Resolver and Swinject are commonly used, providing a lightweight and flexible approach to DI.
- DI improves testability by allowing mock dependencies to be injected, making unit tests more isolated and reliable.
- Consider using DI in conjunction with architectural patterns like MVVM or MVP to further enhance app scalability and maintainability.
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