Question

I am using a Fragment class.
I add it using

  FragmentTransaction fragmentTransaction =      fragmentManager.beginTransaction();


         Search fragment = new  Search(maincontrolActivity.this);

          fragmentTransaction.add(R.id.mainLayout,fragment , "MY_FRAG");
          fragmentTransaction.commit();
          this.FragmentObject = fragment 

when I do refresh the control,I recall this code but by passing this.FragmentObject but I think it be garbage collected because the = refere to the same object , and when say add, it free the old fragement which is the same

so do I need a deep copy or any way to refresh ?

any idea

Answer 1

Ok. So what I would do is have an Interface defined and have each Fragment register with the Activity for a callback when the refresh button is clicked. Then in the fragment itself have it refresh its data. If that means getting new data, switch to a ProgressBar, get the data from the server, and repopulate the Views. Here is an entire article on creating Interfaces in Activities and calling Fragments from them.
Here is roughly what your code will look like…
The Activity:

public class RefreshActivity extends Activity implements View.OnClickListener {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        findViewById(R.id.refresh_button).setOnClickListener(this);
    }

    public interface OnRefreshPressedListener {
        public void onRefreshPressed();
    }

    @Override
    public void onClick(View v) {
        ((OnRefreshPressedListener)this.FragmentObject).onRefreshPressed();
    }
}

The Fragment:

public class Search extends Fragment implements OnRefreshPressedListener {

    @Override
    public void onRefreshPressed() {
        //TODO: Refresh your data!

    }

}