CODEWITHSUNDEEP
androidandroid-activityactivity-lifecycle
aeroxr1
aeroxr1

Reputation: 1074

Log the why of the activity is resumed

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:)

Upvotes: 0

Views: 242

Answers (3)

Lucas Queiroz Ribeiro
Lucas Queiroz Ribeiro

Reputation: 735

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

Imagem

Upvotes: 1

David Wasser
David Wasser

Reputation: 95618

When an Activity is paused, onPause() is called. In onPause() write the name of the Activity that is being paused into a global static variable.

When an Activity is resumed, onResume() is called. In onResume check if the global static variable contains the name of this Activity. If it does, you can omit the logs because this Activity was just paused/resumed.

Upvotes: 1

Lino
Lino

Reputation: 6160

You can for instance override the onBackPressed() callback

@Override
public void onBackPressed() {
    super.onBackPressed();
    /* add your log here */
}

Collecting the log from onResume() plus the one (if any) coming from onBackPressed() then you can detect the various scenarios.

Upvotes: 0

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