Log the why of the activity is resumed

Question

Is there a way to know if a activity's onresume is called because "back button" or if is called because the intire application Was in background ? I have to log this different actions :/ This is the scenario : I have 4 activity A-B-C-D ;  i need to log the navigation between activity and i don't want to log the onresume caused by Application wake from background:)

Answer 1

From Activity A, when you will start the Activity B/C/D, use and identifier and start the activity for result.

For example:

int ActivityBID = 1;
Intent i = new Intent(this,  ActivityB.class);
startActivityForResult(i, ActivityBID );

In your Activity B you override the onBackPressed:

@Override
public void onBackPressed() {
   Intent intent = new Intent();
   intent.putExtra("activity","B")
   setResult(RESULT_OK, intent);        
   finish();
}

And backing to Activity A:

public void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
    if (requestCode == ActivityBID ) {
         if(resultCode == RESULT_OK){
             String stredittext=data.getStringExtra("activity");
         }     
    }
} 

Note: The inner if and the variable is not necessary, because you already know what activity you result are from, but, i think you may want to pass some data in this return, so i leave then.

Edit Image exemplify the ActivityForResult