Detecting activity is started for result

Question

I've an activity suppose "Activity A" which I start by two ways
a)StartActivity()
b) StartActivityForResult()
Now I have few methods which are having different behaviours for the way activity started. Now I want to detect that "Activity A" is started for result. So my question how we can detect that the activity is started for result? I don't want to send data through intent. Any other way more generalized?

Thank You.

Answer 1

From this answer

When your activity was started just by startActivity() a getCallingActivity() method in target activity will return null. When it was called by startActivityForResult() it will return name of calling activity.

Example:

if (getCallingActivity() == null) {
    //This Activity was called by startActivity 
} else {
   //This Activity was called by startActivityForResult
}