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POHow can I refresh the arraylist after remove element?
 

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  1. POHow can I refresh the arraylist after remove element?
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    <p>I have class extended from listactivity, and contain arraylist of hashmap I can remove the element from data base, but I can't view the update until to switch to another activity and return to it.</p> <p>How can I refresh the arraylist after each remove?</p> <p>the code :</p> <pre><code>public class RemoveEvent extends ListActivity { DBAdapter DB = new DBAdapter(this); ArrayList&lt;HashMap&lt;String, String&gt;&gt; mylist; RemoveArrayAdapter n; SimpleAdapter mSchedule; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); mylist = new ArrayList&lt;HashMap&lt;String, String&gt;&gt;(); mSchedule = new SimpleAdapter(this, mylist, R.layout.row, new String[] { "NoEnent", "Date", "Time" }, new int[] { R.id.TRAIN_CELL, R.id.FROM_CELL, R.id.TO_CELL }); DB.open(); Cursor c = DB.selectId(); c.moveToFirst(); for (int i = 0; i &lt; c.getCount(); i++) { HashMap&lt;String, String&gt; map = new HashMap&lt;String, String&gt;(); map.put("NoEnent", c.getString(0)); map.put("Date", c.getString(1)); map.put("Time", c.getString(2)); mylist.add(map); c.moveToNext(); } mSchedule.notifyDataSetChanged(); n = new RemoveArrayAdapter(this, mylist); setListAdapter(n); } public void are_u_sure(int position) { final int p = position; AlertDialog.Builder message = new AlertDialog.Builder(this); message.setMessage("Are you sure you want to remove this event?"); message.setCancelable(false); message.setPositiveButton("Yes", new DialogInterface.OnClickListener() { public void onClick( @SuppressWarnings("unused") final DialogInterface dialog, @SuppressWarnings("unused") final int id) { HashMap&lt;String, String&gt; ob; String s[] = new String[3]; ob = (HashMap&lt;String, String&gt;) mylist.get(p); Iterator myVeryOwnIterator = ob.keySet().iterator(); int i = 0; while (myVeryOwnIterator.hasNext()) { String key = (String) myVeryOwnIterator.next(); String value = (String) ob.get(key); s[i] = value; i++; } DB.open(); DB.del_spec(s[0], s[1], s[2]); } }); message.setNegativeButton("No", new DialogInterface.OnClickListener() { public void onClick(final DialogInterface dialog, @SuppressWarnings("unused") final int id) { dialog.cancel(); } }); final AlertDialog alert = message.create(); alert.show(); } @Override protected void onListItemClick(ListView l, View v, int position, long id) { // get selected items are_u_sure(position); } } </code></pre> <p>the code of RemoveArrayAdapter :</p> <pre><code>public class RemoveArrayAdapter extends ArrayAdapter&lt;HashMap&lt;String, String&gt;&gt; { private final Context context; private final ArrayList&lt;HashMap&lt;String, String&gt;&gt; values; public View vv; public RemoveArrayAdapter(Context context, ArrayList&lt;HashMap&lt;String, String&gt;&gt; values) { super(context, R.layout.removeevent, values); this.context = context; this.values = values; } @Override public View getView(int position, View convertView, ViewGroup parent) { LayoutInflater inflater = (LayoutInflater) context .getSystemService(Context.LAYOUT_INFLATER_SERVICE); View rowView = inflater.inflate(R.layout.removeevent, parent, false); TextView textView = (TextView) rowView.findViewById(R.id.TRAIN_CELL); TextView textView2 = (TextView) rowView.findViewById(R.id.FROM_CELL); TextView textView3 = (TextView) rowView.findViewById(R.id.TO_CELL); ImageView imageView = (ImageView) rowView.findViewById(R.id.logo); textView.setText(values.get(position).get("NoEnent")); textView2.setText(values.get(position).get("Date")); textView3.setText(values.get(position).get("Time")); // I'm guessing you want to modify the Logo?!? if yes pass another ArrayList to this adapter //contaning the info to set the ImageView return rowView; } } </code></pre>
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    1. USSWE
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    1. COHow can I refresh the arraylist after each remove? I tried to use "registerForContextMenu();" => **Why have you used registerForContextMenu()? FYI, it is related to Context Menu actually**
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      1. POHow can I refresh the arraylist after remove element?
      1. USParesh Mayani
    2. COsorry I put it in the wrong way in question :$
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    3. CO@SWE nice color :)
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      1. POHow can I refresh the arraylist after remove element?
      1. USLalit Poptani
 

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