helpme with Fragment Android

Question

The idea is this .. I have a screen that shows me a list of people .. I select one of them. And I showed this class

public class SlideTabFragment extends FragmentActivity implements ActionBar.TabListener

It is a (fragment tab) the idea is to show in this fragment two screens (two fragment) one that shows the data of the person and in the other a list of relatives .. The point is that every time I go to each fragment always enters the OnCreate of the fragment and the idea is to just do it once. Since the first time I make a call to a webservice that full information. I call the fragment thus

Fragment fragment ;
            if(i == 0 )
            {
                 fragment = new FoodFragment2();
            }
            else
            {
                 fragment = new FoodFragment();
            }
            // Crear un FoodFragment con el nombre como argumento

            return fragment;

Answer 1

By calling new FoodFragment2() and new FoodFragment() you're creating two new fragments every time!

Save the fragments that you create into variables, and before creation - check if they already exist, and only of they don't - create them.

Example:

public class Play {
    FoodFragment foodFragment;
    FoodFragment2 foodFragment2 ;

    public FoodFragment createFragment(int i) {
        if(i == 0) {
            if (null == foodFragment2) {
                foodFragment2 = new FoodFragment2();                
            }
            fragment = foodFragment2;
        } else {
            if (null == foodFragment) {
                foodFragment = new FoodFragment();                
            }
            fragment = foodFragment2;
        }        
        return fragment;
    }
}