Câu hỏi phỏng vấn Android
Câu hỏi

Explain when would you call ge...

Câu trả lời

Here is an explanation of when to call getApplicationContext() and why:

When to call getApplicationContext()

You should call getApplicationContext() when:

  1. You need a global context that is not tied to the lifecycle of an Activity or Service. The application context exists for the lifetime of your app.

  2. You need to access application-wide state or resources that should not be dependent on the current UI context.

  3. You are in a non-UI thread like a Service, BroadcastReceiver, or AsyncTask and need to access application-level resources.

  4. You are in a static method and need to access application-level resources.

Why to call getApplicationContext()

There are a few key reasons to use getApplicationContext():

  1. It provides a global context that is not tied to the lifecycle of a specific component. This ensures you don't leak memory by holding onto a context that may be destroyed.

  2. It allows you to access application-wide state and resources like the SharedPreferences, ContentProviders, etc. without being dependent on the current UI context.

  3. **It is safe to use in n...

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