Yes Daniel I will try some sample code side by side but it will be
great if you help to solve this tragidy. Look at my code:
private BroadcastReceiver broadcastReceiver = new BroadcastReceiver()
{
@Override
public void onReceive(Context context, Intent intent)
{
String res = intent.getStringExtra("Response");
System.out.println ("***********************************");
System.out.println (res);
if (res.length() == 0)
{
//Response has not changed
System.out.println("value is null.................");
}
else
{
String delims = "\\^";
tokens = res.split(delims);
for (int i=0;i<tokens.length;i++)
{
System.out.println("At "+i+" Value is "+tokens[i]);
}
if (tokens[1].equalsIgnoreCase("1"))
{
//write code for empId is exist already or not? If
exist then
update row else create new row
showList();
}
else
{
//Don't this record to listview
}
}
}
};
public void showList()
{
ArrayList<HashMap<String, String>> mylist = new
ArrayList<HashMap<String, String>>();
HashMap<String, String> map = new HashMap<String,
String>();
map.put("EmpId", tokens[2]);
map.put("Name", tokens[4]);
map.put("MobNo", tokens[5]);
mylist.add(map);
// ...
SimpleAdapter mSchedule = new SimpleAdapter(this,
mylist,
R.layout.listcolumns,
new String[] {"EmpId", "Name", "MobNo"},
new int[]
{R.id.EmpId, R.id.Name, R.id.MobNo});
list.setAdapter(mSchedule);
}
Now using this code listview updated continously but it shows only one
updated record. Means suppose first record is like:
EmpId EmpName MobNo City ..... Gender
1 Pramod 789 Nasik M
and suppose server send second record then first record is gone and
shows only one record as:
EmpId EmpName MobNo City ..... Gender
1 1 Tom 456 NY M
On May 25, 1:29 pm, Daniel Drozdzewski <[email protected]>
wrote:
> Pramod,
>
> You have to read up on ListView and some Adapter that backs the
> ListView providing it with data.
>
> When you receive new set of data to be displayed or your data has
> changed, you call BaseAdapter.notifyDataSetChanged() to notify the
> associated ListView to redraw all visible items.
>
> ListView and Adapter are powerful, hence not easy to grasp at the
> beginning, so you have to go through some tutorial first, if you want
> to use them.
>
>
>
>
>
> On Wed, May 25, 2011 at 9:18 AM, pramod.deore <[email protected]>
> wrote:
> > Hi actually I am getting a string with some delimilater. Now using
> > split() I am split that response. after spliting I am getting string
> > array of size 40. I am not going to display all 40 fields. I will show
> > near about 10 fields.
>
> > Once again let me explain what I want:
>
> > Using socket connection I am receiving response from server. I want to
> > display this response in list. This list contains say 10 columns.
> > Suppose first two records as
>
> > EmpId EmpName MobNo City ..... Gender
>
> > 1 Pramod 789 Nasik M
> > 1 1 Tom 456 NY M
>
> > Now suppose next record again for EmpId 1 then other fields will
> > change and it will be:
>
> > EmpId EmpName MobNo City ..... Gender
>
> > 1 Deore 789 Nasik M
> > 1 1 Tom 456 NY M
>
> > Now suppose server send again some data with EmpId which is not exist
> > above then it must have to add this new record.And it will be
>
> > EmpId EmpName MobNo City ..... Gender
>
> > 1 Deore 789 Nasik M
> > 1 1 Tom 456 NY M
> > 45 Rob 123 XYZ M
>
> > Now how to achieve this?
>
> > On May 25, 12:33 pm, Nikolay Elenkov <[email protected]>
> > wrote:
> >> On Wed, May 25, 2011 at 4:15 PM, pramod.deore <[email protected]>
> >> wrote:
>
> >> > On May 25, 12:08 pm, Nikolay Elenkov <[email protected]>
> >> > wrote:
> >> >> On Wed, May 25, 2011 at 4:01 PM, pramod.deore
> >> >> <[email protected]> wrote:
> >> >> > Hi Ravi thanks for reply. actually it will becomes more complicated.
> >> >> > Because server is sending data 2-3 times within a second And it will
> >> >> > not be good idea to store data such a frequently.
>
> >> >> > Can somebody please provide me a guideline How I can check whether
> >> >> > some key (here Name ) is already exist in listview?
>
> >> >> If you don't have much data to deal with it, it might be easier to
> >> >> just replace everything and re-display. It doesn't really matter
> >> >> what exactly changed.
>
> >> > Actually I am dealing with huge data. In above code just show a sample
> >> > of three fields but there are more than 40 fields.
>
> >> Why is top-posting the norm on this list? Please write your reply *below*
> >> the previous one, so it reads like a conversation. Trimming also helps.
>
> >> How are you going to display 40 fields in a ListView? It doesn't really
> >> matter
> >> though, you usually care if a particular row/record changed and
> >> update/replace
> >> the whole record in your model/adapter. If you want to be able replace a
> >> particular record, use some key (e.g., the employee ID) to search for it,
> >> and update/replace it.- Hide quoted text -
>
> >> - Show quoted text -
>
> > --
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>
> --
> Daniel Drozdzewski- Hide quoted text -
>
> - Show quoted text -
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