CODEWITHSUNDEEP
androidhashmapfragment
user2387107
user2387107

Reputation: 3

pass a bundle of hashmap to a fragment

I have two classes, one extends FragmentActivity and the other extends Fragment.

I want to pass a hash map in a bundle to the Fragment class from the FragmentActivity class. The Fragment Class should draw a graph (through graphView library) based on the hash map values it receives from the FragmentActivity class and that graph would be displayed inside the "fragment" part of the FragmentActivity xml file. I want to invoke the Fragment class on a Checkbox i.e. A hashmap should be passed to the Fragment class when a certain CheckBox is checked. Below is my code which does not show any errors but it doesn't work either. I tried a very small fragment example, which worked but I cannot make it work in my actual application. I'd be grateful for any help.

public class Graphs_Combination extends FragmentActivity {
// some other code
public void onClick(View v)
{
        Fragment fr;
        fr = new DrawSingleGraph();

        if (((CheckBox) v).isChecked())
        {
            ListOfCheckedFctrsNames.add(((CheckBox) v).getText().toString());
            displayCheckedTextViews(ListOfCheckedFctrsNames);

            Bundle bundle = new Bundle();
            bundle.putSerializable(((CheckBox) v).getText().toString(),mMap);

            fr.setArguments(bundle);
    }
}

}

public class DrawSingleGraph extends Fragment {
@Override
public View onCreateView(LayoutInflater inflater,
          ViewGroup container, Bundle savedInstanceState) 
{
    View v = inflater.inflate(R.layout.draw_single_graph,container, false);
    Log.e(LOG, "Inside DrawSingleGraph");

    Bundle b = this.getArguments();
    if(b.getSerializable("Depression") != null)
        mMap = (HashMap<String, HashMap<String,String>>)b.getSerializable("Depression");

}

It doesn't even show the Log message which doesn't depend on the bundle. Many Thanks

Upvotes: 0

Views: 1242

Answers (1)

Larry Schiefer
Larry Schiefer

Reputation: 15775

You created your Fragment, but didn't do anything with it beyond that. You have to get a FragmentTransaction via the Activity's FragmentManager and add the new Fragment appropriately.

Upvotes: 1

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