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POupdate ListView after onStop()
 

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  1. POupdate ListView after onStop()
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    <p>I have a <code>ListView</code> in a <code>fragment</code> which I can add to from a <code>BroadcastReceiver</code>. However, when the app is removed from the "recents" panel (swipe the thumbnail of the app away - NOT choosing Force Stop in Settings) the <code>BroadcastReceiver</code> still runs (as it is supposed to do do when an app is removed from recents) but I get a Force Close dialog when it tries to update the <code>ListView</code>.</p> <p>What I have gathered about what happens when removing an app from recents is that it does not kill the app, it just stops all the activiites. This means that the <code>BroadcastReceivers</code> and <code>Services</code> keep running. This is where my problem lies - I try to update the ListView in an <code>Activity</code> which has been stopped.</p> <p>EDIT: I think that removing from recents causes onStop() to be called. </p> <p>Do I need to create a service that update the ListView and keeps the activity running? Will it make any difference?</p> <p>What I am trying to do is similar to say an SMS app. In an SMS app, a Broadcast is received and the ListView with the messages is updated to show the new message. </p> <p><strong>EDIT:</strong> Added some code</p> <p>This is the <code>Fragment</code> which contains the <code>ListView</code>:</p> <pre><code>public class HistoryFragment extends FragmentBase implements OnItemAddedHandler { ListView lv; HistoryAdapter simpleAdpt; int mPosition; int index; @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { // TODO Auto-generated method stub View histView = inflater.inflate(R.layout.history_fragment, container, false); setHasOptionsMenu(true); ListView lv = (ListView) histView.findViewById(R.id.h_listView); simpleAdpt = new HistoryAdapter(); lv.setAdapter(simpleAdpt); return histView; } private class HistoryAdapter extends BaseAdapter { private List&lt;Map&lt;String, Object&gt;&gt; mPlanetsList; public HistoryAdapter() { mPlanetsList = DataModel.getInstance().getPlanetList(); } @Override public int getCount() { return mPlanetsList.size(); } @Override public Object getItem(int position) { return mPlanetsList.get(position); } @Override public long getItemId(int position) { return position; } @Override public View getView(int position, View convertView, ViewGroup parent) { if (null == convertView) { convertView = LayoutInflater.from(getActivity()).inflate( R.layout.history_item, null); Log.i("convertView", "was null"); } TextView tv_title = (TextView) convertView .findViewById(R.id.hi_tv_title); // This is part of the layout of each item HashMap&lt;String, String&gt; itemDataHashMap = (HashMap&lt;String, String&gt;) getItem(position); tv_title.setText(itemDataHashMap.get("planet")); return convertView; } } @Override public void onItemAdded(Object data) { simpleAdpt.notifyDataSetChanged(); } @Override public void onItemRemove(int postion) { simpleAdpt.notifyDataSetChanged(); } } </code></pre> <p>This is the <code>BroadcastReceiver</code> that I am trying to use to add items to the <code>ListView</code>. It is fired using an <code>AlarmManager</code>. This means that there is time for the user to remove the app from the recents panel before the item is added to the <code>ListView</code>:</p> <pre><code>public class ReminderBroadcastReceiver extends BroadcastReceiver { // This is declared in the manifest @Override public void onReceive(Context context, Intent intent) { String title = "title"; DataModel.getInstance() .addItem(title); // Add to History } } </code></pre> <p>In <code>DataModel</code> there is:</p> <pre><code> public static DataModel getInstance() { if (null == instance) { Log.i("getInstance", "null"); instance = new DataModel(); } return instance; } private DataModel() { initList(); } private void initList() { mHistoryList = History.getList(); for (int i = 0; i &lt; mHistoryList.size(); i++) { mPlanetsList.add(mHistoryList.get(i).createPlanet()); } } public void addItem(String title) { History history = new History(); history.getDataHashMap().put("planet", title); history.addToHistoryDB(); // This just adds to a Database mHistoryList.add(0, history); // Help keep the orders the same mPlanetsList.add(0, history.createPlanet()); if (null != mOnItemAddHandler) { mOnItemAddHandler.onItemAdded(title); } } </code></pre> <p>If any more code is needed, please say</p>
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    1. PTQuestion
    1. USRiThBo
    1. USRiThBo
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    1. COcan you post some codes or screens to explain what you want? thx
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      1. USTeeTracker
    2. CO@TeeTracker I have added some code.
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      1. POupdate ListView after onStop()
      1. USRiThBo
    3. CO*What I am trying to do is similar to say an SMS app. In an SMS app, a Broadcast is received and the ListView with the messages is updated to show the new message.* - then register the `BroadcastReceiver` in the `onResume()` method of the target `Activity`.
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      1. POupdate ListView after onStop()
      1. USLuksprog
 

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