Easiest way to save data in savedInstanceState when managing an adapter(viewpager)

Question

I'm working with an adapter(viewpager) and when the app changes orientation it loses its information. Which is the easiest way to conserve this information? I was going to use savedInstanceState inside the adapter but it doesn't recognise it.

Could you please show us what you have so far, what you've tried, and what your saving? — Nate-Wilkins, Aug 13 '12 at 16:22
I have some layouts where there're edittext managed by Viewpager. If I change the orientation of the phone it loses information. I know I have to save them before but I can't use savedInstanceState inside the adapter. I have thougth in: create a plain text, create a little database, refresh every x seconds from the class that creates the adapter and retrieve info from variables but I think those things are so complex for so silly operation — Learning from masters, Aug 13 '12 at 16:28
It's not about I have an error in this line. It's about how can I do this in an easy way? The steps, the line to follow for code it. — Learning from masters, Aug 13 '12 at 16:59

score 0 · Accepted Answer · edited May 23 '17 at 10:24

Finally, I have done it following the advice of Jofre as he pointed in Activity restart on rotation Android and looking in http://developer.android.com/intl/es/guide/topics/resources/runtime-changes.html

YOU MUST NOT MODIFY MANIFEST. DON'T ADD android:configChanges

SOLUTION:

//ALL THE VARIABLES YOU NEED TO SAVE IN YOUR ADAPTER PUT THEM AS PUBLIC, IE: 
//public int a = 2;
//public String b = "a";

Public class Yourclass extends Activity{

Classofyouradapter adapter;

@Override   
public void onCreate(Bundle savedInstanceState) {       
    super.onCreate(savedInstanceState);
    setContentView(R.layout.yourlayout);

    final Save_object data = (Save_object) getLastNonConfigurationInstance();

    adapter = new Classofyouradapter(your variables);
    if (data != null) {
            fillit(data);
    }
    myPager = (ViewPager) findViewById(R.id.yourpanelpager);    
    myPager.setAdapter(adapter);    
}

@Override
public Object onRetainNonConfigurationInstance() {
    final Save_object data = new Save_object();
    return data;        
}

public class Save_object{
    int a = adapter.a;   
    String b = adapter.b;
    //Rest of variables
}

public void fillit(Save_object data){
    adapter.a= data.a;   
    adapter.b= data.b;          
    //Rest of variables 
}

}

Easiest way to save data in savedInstanceState when managing an adapter(viewpager)

1 Answers1