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POPerform adapter.notifyDataSetChanged() outside a Fragment
 

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    <p>I have one fragment that is a list of database values. I am using a ListView to display the values to the screen.</p> <p>I have another fragment that contains the buttons to add entries to the database. So my problem is, is that when I add an entry to the database by hitting a button on the first fragment, I need the second fragment (or second page in the app) to update the list of database values that are shown on the screen.</p> <p>Here is the database list fragment:</p> <pre><code>public class FragManage extends Fragment { private PunchesDataSource datasource; @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { datasource = new PunchesDataSource(getActivity()); datasource.open(); List&lt;Punch&gt; values = datasource.getAllPunches(); // Use the SimpleCursorAdapter to show the elements in a ListView ArrayAdapter&lt;Punch&gt; adapter = new ArrayAdapter&lt;Punch&gt;(getActivity(), android.R.layout.simple_list_item_1, values); View myFragmentView = inflater.inflate(R.layout.fragment_manage, container, false); ListView list = (ListView) myFragmentView.findViewById(R.id.list); list.setAdapter(adapter); return myFragmentView; } } </code></pre> <p>So I just want to perform adapter.notifyDataSetChanged() in my other fragment that contains the buttons (something like this):</p> <pre><code> // Punch OUT button. Button out_button = (Button) myFragmentView.findViewById(R.id.out_button); out_button.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { datasource.createPunch("out-" + getTime()); FragManage.adapter.notifyDataSetChanged(); } }); </code></pre>
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