Android - is onStart() called immediately after onCreate()?

Question

If I have two activities A and B. And I create an intent that initiates activity B from the onCreate() of activity A, when will the onStart() of activity A be called?

For example, let us say I had the following:

public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    Intent intent = new Intent(this, B.class);
    startActivityForResult(intent, REQUEST_CONNECT_DEVICE);
}

Will the onStart() method of that activity be called as soon as these lines of code finish executing or will it create activity B first?

Answer 1

Work Flow

Basic Android Activity Life Cycle

When App opened : onCreated() > onStart() > onResume()

When App close : onPause()

Here in your case below is the work flow

Action 1: Activity A opened

• onCreate() of Activity A called

Action 2: Activity B started

• onStart() of Activity A called
• onResume() of Activity A called

• onPause() of Activity A called

• onCreate() of Activity B called

• onStart() of Activity B called
• onResume() of Activity B called