How to get live updates via JSON to listview

Well if your code above is working, you should be able to achieve your goal with the following steps:

• Extract your JSON-Loading code into an AsyncTask, which you can trigger every minute. (AsyncTask)
• Update your ListAdapter using the AsyncTask.

Put your JSON parsing code, that's probably your try..catch block in a separate function and not in onCreate().

So can easily call that part every minute. let's say that function name LoadData() also add one more line adapter.notifyDataSetChanged() to update adapter/list every time.

now in your onCreate(), write this code to call that function every one minute,

    final Handler handler = new Handler();    Runnable runable = new Runnable() {        @Override        public void run() {            //call the function            LoadData();            //also call the same runnable            handler.postDelayed(this, 1000);        }    };    handler.postDelayed(runable, 1000);

Now for second problem, to add new data at top..

I am just getting one thing in mind right now to write a loop , ADD THIS TO IN YOUR FUNCTION BEFORE CALLING ADAPTER NOTIFY CHANGE,like

     ArrayList<HashMap<String,String>> mylist = new  ArrayList<HashMap<String,String>>();      ArrayList<HashMap<String,String>> mylistTemp = new  ArrayList<HashMap<String,String>>();     for(int i = mylist.size()-1 ; i >=0;i--)     {         mylistTemp.add(mylist.get(i));     }     mylist = mylistTemp;

Here is a possible implementation of the onCreate() method, which will run an update-task every minute:

public class JSON_AndroidActivity extends Activity {    /** Called when the activity is first created. */    private JSONLoaderTask mJSONLoaderTask;    private Handler mHandler;    private ArrayAdapter<String> mArrayAdapter;    private Runnable mRefresher = new Runnable() {        @Override        public void run() {            mJSONLoaderTask = new JSONLoaderTask(JSON_AndroidActivity.this, mArrayAdapter);            mJSONLoaderTask.execute("");            mHandler.postDelayed(this, 1000);        }    };    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);        mHandler.postDelayed(mRefresher, 1000);    }}

And here is a hull implementation of a possible task, where you can do your heavy loading and update your adapter for the list:

public class JSONLoaderTask extends AsyncTask<String, String, String> {    private Context context;    private ProgressDialog progressDialog;    private final ArrayAdapter<String> mArrayAdapter;    public JSONLoaderTask(Context pContext, ArrayAdapter<String> pArrayAdapter) {        this.context = pContext;        this.mArrayAdapter = pArrayAdapter;    }    @Override    protected void onPreExecute() {        progressDialog = new ProgressDialog(context);        progressDialog.show();    }    @Override    protected String doInBackground(String... params) {         String result = getJSONStream();        return result;    }    private String getJSONStream() {        //load your string here        return "";    }    @Override    protected void onPostExecute(String result) {        progressDialog.dismiss();        // Update your ArrayAdapter    }}