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POAndroid-The content of the adapter has changed but ListView did not receive a notification.content adapter is not modified from a background thread
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  1. POAndroid-The content of the adapter has changed but ListView did not receive a notification.content adapter is not modified from a background thread
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    copied!<p>I am getting this Exception when I am Modifying a listview. </p> <blockquote> <p>The content of the adapter has changed but ListView did not receive a notification. Content adapter is not modified from a background thread.</p> </blockquote> <p>But I am not modifying anything on background thread and this also I am not getting frequently. Only some times when I got multiple pns, if the device goes to sleep mode, after that when it is unlocked, the app clicking on listview is causing the crash.</p> <p>Here is the Code which I have written for showing messages in <code>ListView</code>.</p> <pre><code>private class GetMessagesAsyncronousTask extends AsyncTask&lt;Void, Void, Void&gt; { private ProgressDialog myAsyncTask = null; @Override protected void onPreExecute() { myAsyncTask = new ProgressDialog(MessageActivity.this); myAsyncTask.setMessage(getString(R.string.msg_refresh_label)); myAsyncTask.setIndeterminate(true); myAsyncTask.setCancelable(false); if (myAsyncTask != null &amp;&amp; !myAsyncTask.isShowing()) { try { myAsyncTask.show(); } catch (WindowManager.BadTokenException e) { e.printStackTrace(); } catch (Exception e) { e.printStackTrace(); } } super.onPreExecute(); } @Override protected Void doInBackground(Void... params) { // Here i am calling the web services and inserting the data in DB. } return null; } @Override protected void onPostExecute(Void result) { super.onPostExecute(result); if (myAsyncTask != null &amp;&amp; myAsyncTask.isShowing()) { try { myAsyncTask.dismiss(); myAsyncTask = null; } catch (WindowManager.BadTokenException e1) { e1.printStackTrace(); } catch (Exception e2) { e2.printStackTrace(); } } // this method is for updating the messages Count in spinner and list view rows when push notification came. resetAdapter(); } } } </code></pre> <p>In <code>ResetAdapter</code>, based on spinner selection I am showing corresponding messages in <code>listview</code>.</p> <pre><code>DropdownAdapter dropDownAdapter = new DropdownAdapter( MessageActivity.this, R.layout.row_dropdown_action, listNavigationArray); dropDownAdapter .setDropDownViewResource(android.R.layout.simple_dropdown_item_1line); getActionBar().setNavigationMode(ActionBar.NAVIGATION_MODE_LIST); getActionBar().setDisplayShowHomeEnabled(false); getActionBar().setDisplayShowTitleEnabled(false); ActionBar.OnNavigationListener navigationListener = new OnNavigationListener() { @Override public boolean onNavigationItemSelected(int itemPosition, long itemId) { navigateToFolder(itemPosition); return false; } }; getActionBar().setListNavigationCallbacks(dropDownAdapter, navigationListener); } </code></pre> <p>//Navigate Folder Method.</p> <pre><code> private void navigateToFolder(int itemPosition) { if (itemPosition == 2) { listView.setVisibility(View.GONE); archiveListView.setVisibility(View.VISIBLE); recipientListView.setVisibility(View.GONE); final List&lt;MessageBean&gt; readMessageList = messageManager .getMessageList("read", user.getSponsorId(), user.getUserId()); final CheckBoxAdapter checkBoxAdapter = new CheckBoxAdapter( MessageActivity.this, readMessageList); archiveListView.setAdapter(checkBoxAdapter ); } else if (itemPosition == 3) { recipientListView.setVisibility(View.VISIBLE); listView.setVisibility(View.GONE); archiveListView.setVisibility(View.GONE); adapter = new AddressAdapter(MessageActivity.this, R.layout.row_address, matchedRecipients); recipientListView.setAdapter(adapter); } else if (itemPosition == 0) { listView.setVisibility(View.VISIBLE); archiveListView.setVisibility(View.GONE); recipientListView.setVisibility(View.GONE); messageList = messageManager.getUnreadMessageList("unread", user.getSponsorId(), user.getUserId()); inboxAdapter = new MessageListAdapter(MessageActivity.this, R.layout.custome_row_message, messageList); refreshYourAdapter(messageList); listView.setAdapter(inboxAdapter); } else if (itemPosition == 1) { listView.setVisibility(View.VISIBLE); archiveListView.setVisibility(View.GONE); recipientListView.setVisibility(View.GONE); inboxAdapter = new MessageListAdapter(MessageActivity.this, R.layout.custome_row_message, pendingMessageList); refreshYourAdapter(pendingMessageList); listView.setAdapter(inboxAdapter); } } private void refreshYourAdapter(final List&lt;MessageBean&gt; items) { runOnUiThread(new Runnable() { public void run() { if (inboxAdapter != null) { inboxAdapter.refreshAdapter(items); } } }); } </code></pre>
 

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