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 the difference between invisible and gone for the View visibility status?

middle

What are Retained Fragments?

entry

What is a difference between Spannable and String ?

Bình luận

Chưa có bình luận nào

Chưa có bình luận nào