Activity base class?

What is Activi开发者_如何学Cty base class: java.lang.Object or android.content.Context?

The class overview is not clear to me (see the image please).

In Java every class has an Object as a superclass (You can also have more information here). Context is a Java class hence it has Object at the root of its inheritance tree hierarchy. Context is a class that holds information about an application environment as described in the official documentation, and Activity has it in its inheritance tree.

Context is the base class for Activity.

I was confuse the about the base class of an android, Is Object is the base class or Activity is the base class??? but i studied and found the solution.

The Application class in Android is the base class within an Android app that contains all other components such as activities and services. The Application class, or any subclass of the Application class, is instantiated before any other class when the process for your application/package is created.

Activity Tree Hierarchy

My Activity

↓extends

AppCompatActivity

↓extends

FragmentActivity

↓extends

ComponentActivity

↓extends

androidx.core.app.ComponentActivity

↓extends

Activity

↓extends

ContextThemeWrapper

↓extends

ContextWrapper

↓extends

Context
(This is base abstract Base Class)