Unable to get text of element which is appearing after scroll


I am new beebie to appium.I am able to get text which is appearing on screen but rest i am unable to find.
PFA for layout reference

List parentMapDetails = driver.findElements(By.xpath("//android.widget.ExpandableListView"));
List childMapDetails = parentMapDetails.get(0).findElements(By.xpath("//android.widget.RelativeLayout/android.widget.LinearLayout/android.widget.LinearLayout/android.widget.LinearLayout"));

   							System.out.println("List of stops in the Route " + childMapDetails.size());

   								for (int i=0;i<childMapDetails.size();i++) {									    
   										System.out.println("list of Stops: " + i+1 + "--"+childMapDetails.get(i).findElement(By.xpath("//android.widget.TextView")).getText());

Please let me know how to get rest elements text which is appearing after scroll