Question

I have an Activity_A where there is a ListView whose data depends on a value say dependency

From this Activity_B user goes to Activity_B where he can change the value of dependency

since this dependency must change the data in the ListView i need to reload the ListView, hence i did this:

if(//dependency is changed){
Intent intent = new Intent(Activity_B.this,Activity_A.class);
startActivity(intent);
}

the ListView is populated with new data.

Problem:

when i press device back button from this newly loaded Activity_A twice, I end up in Activit_A with previous ListView data. So, if i try to click any item i get this Exception

The content of the adapter has changed but ListView  did not receive a notification. Make sure the content of your adapter is not modified from a background thread, but only from the UI thread

How to avoid this??

Thank You

Answer 1

You can store dependency value in SharedPreferences and populate your list based on the dependency value in the Activity_A onResume()