How to initialize context? [closed]

问题

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Closed 6 years ago.

This is a really stupid question but what do I set context equal to in Context context = ...

Just declaring it sets it to null and I need to use context for my app.

回答1:

You cannot instantiate a Context object. This is controlled by the system. However, every Application has a Context and every Activity is a Context, so you have a couple of was to obtain a pointer to a Context object:

1. Assign a pointer to an Activity object to the Context object pointer (i.e. Using the this keyword)

2. The Activity class has a method called getApplicationContext() which retrieves a pointer to the Context object contained by the Application.

来源：https://stackoverflow.com/questions/14948362/how-to-initialize-context