Blackberry push notifiaction message showing in pop up screen - blackberry

Question

have used this link for push notification http://rincethomas.blogspot.in/2012/07/push-notification-in-blackberry.html
the code is running fine and i'm receiving push notification in dialog, but instead of showing the default dialog, i have created my own pop up screen to show push message
but i am getting error in my PushMessageReader.java as you can check that in link. here is my PushMessageReader.java code for pop up screen to show push message
public final class PushMessageReader {
// HTTP header property that carries unique push message ID
private static final String MESSAGE_ID_HEADER = "Push-Message-ID";
// content type constant for text messages
private static final String MESSAGE_TYPE_TEXT = "text";
// content type constant for image messages
private static final String MESSAGE_TYPE_IMAGE = "image";
private static final int MESSAGE_ID_HISTORY_LENGTH = 10;
private static String[] messageIdHistory = new String[MESSAGE_ID_HISTORY_LENGTH];
private static byte historyIndex;
private static byte[] buffer = new byte[15 * 1024];
private static byte[] imageBuffer = new byte[10 * 1024];
static Popupscreen popup;
private static String text;
/**
* Utility classes should have a private constructor.
*/
private PushMessageReader() {
popup = new Popupscreen();
}
/**
* Reads the incoming push message from the given streams in the current thread and notifies controller to display the information.
*
* #param pis
* the pis
* #param conn
* the conn
*/
public static void process(PushInputStream pis, Connection conn) {
System.out.println("Reading incoming push message ...");
try {
HttpServerConnection httpConn;
if (conn instanceof HttpServerConnection) {
httpConn = (HttpServerConnection) conn;
} else {
throw new IllegalArgumentException("Can not process non-http pushes, expected HttpServerConnection but have "
+ conn.getClass().getName());
}
String msgId = httpConn.getHeaderField(MESSAGE_ID_HEADER);
String msgType = httpConn.getType();
String encoding = httpConn.getEncoding();
System.out.println("Message props: ID=" + msgId + ", Type=" + msgType + ", Encoding=" + encoding);
boolean accept = true;
if (!alreadyReceived(msgId)) {
byte[] binaryData;
if (msgId == null) {
msgId = String.valueOf(System.currentTimeMillis());
}
if (msgType == null) {
System.out.println("Message content type is NULL");
accept = false;
} else if (msgType.indexOf(MESSAGE_TYPE_TEXT) >= 0) {
// a string
int size = pis.read(buffer);
binaryData = new byte[size];
System.arraycopy(buffer, 0, binaryData, 0, size);
PushMessage message = new PushMessage(msgId, System.currentTimeMillis(), binaryData, true, true );
text = new String( message.getData(), "UTF-8" );
System.out.println("PUSH MESSAGE================ "+text);
try{
/*final Dialog screen = new Dialog(Dialog.D_OK_CANCEL, " "+text,Dialog.OK,
//mImageGreen.getBitmap(),
null, Manager.VERTICAL_SCROLL);*/
final UiEngine ui = Ui.getUiEngine();
Application.getApplication().invokeAndWait(new Runnable() {
public void run() {
NotificationsManager.triggerImmediateEvent(0x749cb23a76c66e2dL, 0, null, null);
ui.pushGlobalScreen(popup, 0, UiEngine.GLOBAL_QUEUE);
}
});
//screen.setDialogClosedListener(new MyDialogClosedListener());
}
catch (Exception e) {
// TODO: handle exception
}
// TODO report message
} else {
System.out.println("Unknown message type " + msgType);
accept = false;
}
} else {
System.out.println("Received duplicate message with ID " + msgId);
}
pis.accept();
} catch (Exception e) {
System.out.println("Failed to process push message: " + e);
}
}
/**
* Check whether the message with this ID has been already received.
*
* #param id
* the id
* #return true, if successful
*/
private static boolean alreadyReceived(String id) {
if (id == null) {
return false;
}
if (Arrays.contains(messageIdHistory, id)) {
return true;
}
// new ID, append to the history (oldest element will be eliminated)
messageIdHistory[historyIndex++] = id;
if (historyIndex >= MESSAGE_ID_HISTORY_LENGTH) {
historyIndex = 0;
}
return false;
}
class Popupscreen extends PopupScreen{
LabelField label = new LabelField("");
ButtonField Okbutn;
public Popupscreen(){
super(new VerticalFieldManager(), Screen.DEFAULT_CLOSE);
Okbutn = new ButtonField("ok",ButtonField.FIELD_HCENTER);
LabelField lbl = new LabelField("SUNRAYS", LabelField.USE_ALL_WIDTH | DrawStyle.HCENTER){
protected void paintBackground(net.rim.device.api.ui.Graphics g)
{
g.clear();
g.getColor();
//g.setColor(Color.WHITESMOKE);
//g.fillRect(0, 0, Display.getWidth(), Display.getHeight());
g.setColor(Color.WHITESMOKE);
}
};
add(lbl);
add(label);
add(Okbutn);
label.setText(text);
Okbutn.setChangeListener(new FieldChangeListener() {
public void fieldChanged(Field field, int context) {
// TODO Auto-generated method stub
close();
}
});
//this.setBackground(BackgroundFactory.createSolidTransparentBackground(Color.WHITE, 80));
// setBorder(BorderFactory.createSimpleBorder(new XYEdges(),Border.STYLE_TRANSPARENT));
}
}
}