Câu hỏi phỏng vấn Android
Câu hỏi

Discuss Singletons vs. Applicat...

Câu trả lời

Here is a concise answer comparing Singletons and Application Context for managing global state in Android apps:

Singletons and Application Context are both ways to manage global state in Android apps, but they have important differences:

  • Singletons are a design pattern that ensures a class has only one instance and provides a global point of access to it. They are useful for managing global data and state information that needs to be shared across the entire app[1][2].

  • The Application class is a base class for maintaining global application state. It provides a global context for the entire app, allowing access to resources and information about the application environment. Data stored in the Application class persists throughout the lifecycle of the app[1][4].

The key differences are:

  • Accessibility: Application Context is accessible from anywhere within the app, while Singletons can only be accessed through the single instance that is created[1].

  • Lifecycle: Application Context persists throughout the lifecycle of the app, while Singletons persist only as long as the class instance exists[1].

  • Testing: Singletons can be more difficult to test, a...

senior

senior

Gợi ý câu hỏi phỏng vấn

middle

What is Implicit Intent?

senior

What is the difference between ANR and crash in Android?

middle

What is RenderScript and when should we (really) use it?

Bình luận

Chưa có bình luận nào

Chưa có bình luận nào