Background Application unable to display UI when receive push notification - blackberry

Here is my full push notification listener.
public class MyApp extends UiApplication {
public static void main(String[] args) {
PushAgent pa = new PushAgent();
pa.enterEventDispatcher();
}
}
Is this class extended correctly?
public class PushAgent extends Application {
private static final String PUSH_PORT = "32023";
private static final String BPAS_URL = "http://pushapi.eval.blackberry.com";
private static final String APP_ID = "2727-c55087eR3001rr475448i013212a56shss2";
private static final String CONNECTION_SUFFIX = ";deviceside=false;ConnectionType=mds-public";
public static final long ID = 0x749cb23a75c60e2dL;
private MessageReadingThread messageReadingThread;
public PushAgent() {
if (!CoverageInfo.isCoverageSufficient(CoverageInfo.COVERAGE_BIS_B)) {
return;
}
if (DeviceInfo.isSimulator()) {
return;
}
messageReadingThread = new MessageReadingThread();
messageReadingThread.start();
registerBpas();
}
private static class MessageReadingThread extends Thread {
private boolean running;
private ServerSocketConnection socket;
private HttpServerConnection conn;
private InputStream inputStream;
private PushInputStream pushInputStream;
public MessageReadingThread() {
this.running = true;
}
public void run() {
String url = "http://:" + PUSH_PORT + CONNECTION_SUFFIX;
try {
socket = (ServerSocketConnection) Connector.open(url);
} catch (IOException ex) {
}
while (running) {
try {
Object o = socket.acceptAndOpen();
conn = (HttpServerConnection) o;
inputStream = conn.openInputStream();
pushInputStream = new MDSPushInputStream(conn, inputStream);
PushMessageReader.process(pushInputStream, conn);
} catch (Exception e) {
if (running) {
running = false;
}
} finally {
close(conn, pushInputStream, null);
}
}
}
}
public static void close(Connection conn, InputStream is, OutputStream os) {
if (os != null) {
try {
os.close();
} catch (IOException e) {
}
}
if (is != null) {
try {
is.close();
} catch (IOException e) {
}
}
if (conn != null) {
try {
conn.close();
} catch (IOException e) {
}
}
}
private String formRegisterRequest(String bpasUrl, String appId,
String token) {
StringBuffer sb = new StringBuffer(bpasUrl);
sb.append("/mss/PD_subReg?");
sb.append("serviceid=").append(appId);
sb.append("&osversion=").append(DeviceInfo.getSoftwareVersion());
sb.append("&model=").append(DeviceInfo.getDeviceName());
if (token != null && token.length() > 0) {
sb.append("&").append(token);
}
return sb.toString();
}
private void registerBpas() {
final String registerUrl = formRegisterRequest(BPAS_URL, APP_ID, null)
+ CONNECTION_SUFFIX;
Object theSource = new Object() {
public String toString() {
return "Oriental Daily";
}
};
NotificationsManager.registerSource(ID, theSource,
NotificationsConstants.IMPORTANT);
new Thread() {
public void run() {
try {
HttpConnection httpConnection = (HttpConnection) Connector
.open(registerUrl);
InputStream is = httpConnection.openInputStream();
String response = new String(IOUtilities.streamToBytes(is));
close(httpConnection, is, null);
String nextUrl = formRegisterRequest(BPAS_URL, APP_ID,
response) + CONNECTION_SUFFIX;
HttpConnection nextHttpConnection = (HttpConnection) Connector
.open(nextUrl);
InputStream nextInputStream = nextHttpConnection
.openInputStream();
response = new String(
IOUtilities.streamToBytes(nextInputStream));
close(nextHttpConnection, is, null);
} catch (IOException e) {
}
}
}.start();
}
}
}
This is the process;
public class PushMessageReader {
private static final String MESSAGE_ID_HEADER = "Push-Message-ID";
private static final String MESSAGE_TYPE_TEXT = "text";
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];
public static final long ID = 0x749cb23a75c60e2dL;
public static Bitmap popup = Bitmap.getBitmapResource("icon_24.png");
private PushMessageReader() {
}
public static void process(PushInputStream pis, Connection conn) {
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();
if (!alreadyReceived(msgId)) {
byte[] binaryData;
if (msgId == null) {
msgId = String.valueOf(System.currentTimeMillis());
}
if (msgType.indexOf(MESSAGE_TYPE_TEXT) >= 0) {
int size = pis.read(buffer);
binaryData = new byte[size];
System.arraycopy(buffer, 0, binaryData, 0, size);
NotificationsManager.triggerImmediateEvent(ID, 0, null,
null);
processTextMessage(buffer);
} else if (msgType.indexOf(MESSAGE_TYPE_IMAGE) >= 0) {
int size = pis.read(buffer);
if (encoding != null && encoding.equalsIgnoreCase("base64")) {
Base64InputStream bis = new Base64InputStream(
new ByteArrayInputStream(buffer, 0, size));
size = bis.read(imageBuffer);
}
binaryData = new byte[size];
System.arraycopy(buffer, 0, binaryData, 0, size);
}
}
pis.accept();
} catch (Exception e) {
} finally {
PushAgent.close(conn, pis, null);
}
}
private static boolean alreadyReceived(String id) {
if (id == null) {
return false;
}
if (Arrays.contains(messageIdHistory, id)) {
return true;
}
messageIdHistory[historyIndex++] = id;
if (historyIndex >= MESSAGE_ID_HISTORY_LENGTH) {
historyIndex = 0;
}
return false;
}
private static void processTextMessage(final byte[] data) {
synchronized (Application.getEventLock()) {
UiEngine ui = Ui.getUiEngine();
GlobalDialog screen = new GlobalDialog("New Notification",
"Article ID : " + new String(data), new String(data));
ui.pushGlobalScreen(screen, 1, UiEngine.GLOBAL_QUEUE);
}
}
static class GlobalDialog extends PopupScreen implements
FieldChangeListener {
ButtonField mOKButton = new ButtonField("OK", ButtonField.CONSUME_CLICK
| FIELD_HCENTER);
String data = "";
public GlobalDialog(String title, String text, String data) {
super(new VerticalFieldManager());
this.data = data;
add(new LabelField(title));
add(new SeparatorField(SeparatorField.LINE_HORIZONTAL));
add(new LabelField(text, DrawStyle.HCENTER));
mOKButton.setChangeListener(this);
add(mOKButton);
}
public void fieldChanged(Field field, int context) {
if (mOKButton == field) {
try {
ApplicationManager.getApplicationManager().launch(
"OrientalDailyBB");
ApplicationManager.getApplicationManager().postGlobalEvent(
ID, 0, 0, data, null);
ApplicationIndicatorRegistry reg = ApplicationIndicatorRegistry
.getInstance();
reg.unregister();
close();
} catch (ApplicationManagerException e) {
}
}
}
}
}
In this project, I checked Auto-run on startup so that this background app listener will run all the time and set the start tier to 7 in the BB App Descriptor.
However, it cannot display the popup Dialog, but I can see the device has received the push notification.
After the dialog popup and user click OK will start the OrientalDailyBB project and display the particular MainScreen.
FYI: The listener priority is higher than the OrientalDailyBB project because it is a background application. So when I install OrientalDailyBB, it will install this listener too. It happened because this listener is not in the OrientalDailyBB project folder, but is in a different folder. I did separate them to avoid the background application being terminated when the user quits from OrientalDailyBB.

I believe that this is a threading problem. pushGlobalScreen is a message you could try to use with invokeLater.
UiApplication.getUiApplication().invokeLater(new Runnable() {
public void run() {
ui.pushGlobalScreen(screen, 1, UiEngine.GLOBAL_QUEUE);
}
});
you could try to push the application to the foreground too.

Related

Vaadin upload with PipedInputStream & PipedOutputStream example

I just started learning Vaadin 8 and my first example is Upload button. I was stuck with an issue where I could not solve the problem for many hours and hours.
Here it is,
I am returning PipedOutputStream in the receiveUpload method,
Here is the code for receiveUpload method,
public OutputStream receiveUpload(String filename, String mimeType) {
this.fileName = filename;
this.mimeType = mimeType;
try {
pipedOutputStream = new PipedOutputStream();
pipedInputStream = new PipedInputStream(pipedOutputStream);
if (filename == null || filename.trim().length() == 0) {
upload.interruptUpload();
} else {
}
} catch (Exception e) {
e.printStackTrace();
}
return pipedOutputStream;
}
In the uploadSucceeded method, I need to take the pipedinputstream and send it another method to load the stream into the database
public void uploadSucceeded(SucceededEvent event) {
try {
fileUploadOperation.upload(pipedInputStream); --> I need to push all the stream data in one go into a method to generate a file at the business layer
} catch (Exception e) {
e.printStackTrace();
}
}
When I was running the application, it hangs out for a long time and I could not figure out where it is. Later I could notice that both piped input and piped output streams should be created in separate threads or at least one of them in a separate thread but don't know how to handle it.
Any help
I am pasting the complete class for more information,
public class WebCommunityView implements Receiver, FailedListener, SucceededListener, StartedListener, FinishedListener {
private PipedOutputStream pipedOutputStream = null;
private PipedInputStream pipedInputStream = null;
private Upload upload = null;
private String fileName = null, mimeType = null;
private Grid<FileListProperties> fileListGrid = null;
public final static WebCommunityView newInstance(WebContentScreen screen) {
vw.initBody();
return vw;
}
protected void initBody() {
VerticalLayout verticalLayout = new VerticalLayout();
fileListGrid = new Grid<FileListProperties>();
fileListGrid.addColumn(FileListProperties::getCreatedDate).setCaption("Date");
fileListGrid.addColumn(FileListProperties::getFileName).setCaption("File Name");
fileListGrid.addColumn(FileListProperties::getUserName).setCaption("User Name");
fileListGrid.addComponentColumn(this::buildDownloadButton).setCaption("Download");
fileListGrid.setItems(loadGridWithFileInfo());
upload = new Upload("", this);
upload.setImmediateMode(false);
upload.addFailedListener((Upload.FailedListener) this);
upload.addSucceededListener((Upload.SucceededListener) this);
upload.addStartedListener((Upload.StartedListener) this);
upload.addFinishedListener((Upload.FinishedListener) this);
Label fileUploadLabel = new Label("Label"));
verticalLayout.addComponent(currentListLabel);
verticalLayout.addComponent(fileListGrid);
verticalLayout.addComponent(fileUploadLabel);
verticalLayout.addComponent(upload);
mainbody.addComponent(verticalLayout);
}
#Override
public void uploadSucceeded(SucceededEvent event) {
try {
//Model Layer
fileUploadOperation.upload(pipedInputStream);
fileUploadOperation.commit();
} catch (Exception e) {
e.printStackTrace();
}
}
#Override
public void uploadFailed(FailedEvent event) {
if (event.getFilename() == null) {
Notification.show("Upload failed", Notification.Type.HUMANIZED_MESSAGE);
}
try {
//Model Layer
fileUploadOperation.abort();
} catch (Exception e) {
e.printStackTrace();
}
}
public OutputStream receiveUpload(String filename, String mimeType) {
this.fileName = filename;
this.mimeType = mimeType;
try {
pipedOutputStream = new PipedOutputStream();
new Thread() {
public void run() {
try {
System.out.println("pipedInputStream Thread started");
pipedInputStream = new PipedInputStream(pipedOutputStream);
} catch (Exception e) {
e.printStackTrace();
}
};
}.start();
if (filename == null || filename.trim().length() == 0) {
screen.displayMessage("Please select a file to upload !", WebContentScreen.MESSAGE_TYPE_WARNING);
upload.interruptUpload();
} else {
Properties properties = new Properties();
properties.setProperty("NAME", fileName);
properties.setProperty("MIME_TYPE", mimeType);
//Model Layer
fileUploadOperation.initialize(properties);
}
} catch (Exception e) {
e.printStackTrace();
}
System.out.println("pipedOutputStream:"+pipedOutputStream);
return pipedOutputStream;
}
private List<FileListProperties> loadGridWithFileInfo() {
List<FileListProperties> list = null;
DateFormat dateFormat = new SimpleDateFormat("dd-MMM-yyyy");
try {
list = new ArrayList<FileListProperties>(1);
Collection<FileInfo> fileInfoList = fileCommandQuery.lstFilesForDownload();
for (Iterator iterator = fileInfoList.iterator(); iterator.hasNext();) {
FileInfo fileInfo = (FileInfo) iterator.next();
Properties properties = fileInfo.getProperties();
Collection<String> mandatoryParameters = fileInfo.getMandatoryProperties();
FileListProperties fileListProperties = new FileListProperties();
for (Iterator iterator2 = mandatoryParameters.iterator(); iterator2.hasNext();) {
String key = (String) iterator2.next();
String value = properties.getProperty(key);
if (key != null && key.equalsIgnoreCase("NAME")) {
fileListProperties.setFileName(value);
} else if (key != null && key.equalsIgnoreCase("USER_NAME")) {
fileListProperties.setUserName(value);
} else if (key != null && key.equalsIgnoreCase("CREATED_DATE")) {
Calendar calendar = Calendar.getInstance();
calendar.setTimeInMillis(1550566760000L);
fileListProperties.setCreatedDate(dateFormat.format(calendar.getTime()));
}
}
if (fileListProperties != null) {
list.add(fileListProperties);
}
}
} catch (Exception e) {
e.printStackTrace();
} finally {
dateFormat = null;
}
return list;
}
private Button buildDownloadButton(FileListProperties fileListProperties) {
Button button = new Button("...");
button.addClickListener(e -> downloadFile(fileListProperties));
return button;
}
private void downloadFile(FileListProperties fileListProperties) {
}
}
The problem in your example is that you need to do the actual file handling in a separate thread. The Viritin add-on contains a component called UploadFileHandler that simplifies this kind of usage a lot. It will provide you InputStream to consume. The integration test for the component contains this kind of usage example.
Also, my recent blog entry about the subject might help.

Blackberry java show recieved push message

After referring tons of tutorials finally somehow I managed to develop java push client for Blackberry OS 7.0 (registering in RIM and server side are completely ok, this is the server script). Now the program running on the device and when new push massage revived there is a little arrow blinking on right up corner of the device, but I haven't that much knowledge to show that message in a label field or any other UI component. Please tell me how to show the revived push message in a screen. I'm beginner in programming so I haven't that much of knowledge need your help. Here I post all the codes that I have used.
Here is the application class
import net.rim.device.api.ui.UiApplication;
import net.rim.device.api.ui.component.LabelField;
import net.rim.device.api.ui.container.MainScreen;
/**
* This class extends the UiApplication class, providing a
* graphical user interface.
*/
public class MyApp extends UiApplication
{
public static void main(String[] args)
{
//every time we start the application we register to BIS for push
if (args.length > 0 && args[0].equals("BlackBerryCity")) {
System.out.println("!!!!!!!!!!!!!!I am inside if");
//registering for push
Push_main.registerBpas();
MyApp app = new MyApp();
app.enterEventDispatcher();
}
//every time we restart the phone , we call this background process that is responsible for listening for push
else {
System.out.println("!!!!!!!!!!!!!!I am inside else");
//should put the background classes for listening to pushed msgs :D
BackgroundApplication backApp=new BackgroundApplication();
backApp.setupBackgroundApplication();
backApp.enterEventDispatcher();
}
}
public MyApp(){
pushScreen(new MyAppScreen());
}
}
class MyAppScreen extends MainScreen
{
public MyAppScreen()
{
// What to add here no idea :(
}
}
Push_main class
public class Push_main {
private static final String REGISTER_SUCCESSFUL = "rc=200";
private static final String DEREGISTER_SUCCESSFUL = REGISTER_SUCCESSFUL;
private static final String USER_ALREADY_SUBSCRIBED = "rc=10003";
private static final String ALREADY_UNSUSCRIBED_BY_USER = "rc=10004";
private static final String ALREADY_UNSUSCRIBED_BY_PROVIDER = "rc=10005";
private static final String PUSH_PORT = ""+"XXXXXX"; //push port
private static final String BPAS_URL = "http://cpXXXX.pushapi.eval.blackberry.com";
private static final String APP_ID = ""+ "XXXX-XXXXXXXXXXXXXXXXXXXXXXXXXXX"; // add application id
private static String URL = "http://:"+ "XXXXXX"; // add your push port.
private static final int CHUNK_SIZE = 256;
public static ListeningThread _listeningThread;
public static StreamConnectionNotifier _notify;
private static final long ID = 0x954a603c0dee81e0L;
public Push_main(){
if(_listeningThread==null)
{
System.out.println("msg on listening thread 1");
_listeningThread = new ListeningThread();
System.out.println("msg on listening thread 2");
_listeningThread.start();
System.out.println("msg on listhning thread 3 ");
}
}
public static class ListeningThread extends Thread
{
private boolean _stop = false;
/**
* Stops the thread from listening.
*/
private synchronized void stop()
{
_stop = true;
try
{
// Close the connection so the thread will return.
_notify.close();
}
catch (Exception e)
{
}
}
/**
* Listen for data from the HTTP url. After the data has been read,
* render the data onto the screen.
* #see java.lang.Runnable#run()
*/
public void run()
{
StreamConnection stream = null;
InputStream input = null;
MDSPushInputStream pushInputStream=null;
while (!_stop)
{
try
{
// Synchronize here so that we don't end up creating a connection that is never closed.
synchronized(this)
{
// Open the connection once (or re-open after an IOException), so we don't end up
// in a race condition, where a push is lost if it comes in before the connection
// is open again. We open the url with a parameter that indicates that we should
// always use MDS when attempting to connect.
System.out.println("\n\n msg connection 1");
_notify = (StreamConnectionNotifier)Connector.open(URL);
System.out.println("\n\n msg connection 2");
}
while (!_stop)
{
// NOTE: the following will block until data is received.
System.out.println("\n\n msg notify 1");
stream = _notify.acceptAndOpen();
System.out.println("\n\n msg 1 ");
try
{
System.out.println("\n\n msg 2");
input = stream.openInputStream();
System.out.println("\n\n msg 3 ");
pushInputStream= new MDSPushInputStream((HttpServerConnection)stream, input);
System.out.println("\n\n msg 4");
// Extract the data from the input stream.
DataBuffer db = new DataBuffer();
byte[] data = new byte[CHUNK_SIZE];
int chunk = 0;
while ( -1 != (chunk = input.read(data)) )
{
db.write(data, 0, chunk);
}
updateMessage(data);
// This method is called to accept the push.
pushInputStream.accept();
data = db.getArray();
}
catch (IOException e1)
{
// A problem occurred with the input stream , however, the original
// StreamConnectionNotifier is still valid.
// errorDialog(e1.toString());
}
finally
{
if ( input != null )
{
try
{
input.close();
}
catch (IOException e2)
{
}
}
if ( stream != null )
{
try
{
stream.close();
}
catch (IOException e2)
{
}
}
}
}
}
catch (IOException ioe)
{
// Likely the stream was closed. Catches the exception thrown by
// _notify.acceptAndOpen() when this program exits.
errorDialog(ioe.toString());
}
finally
{
/*
if ( _notify != null )
{
try
{
_notify.close();
_notify = null;
}
catch ( IOException e )
{
}
}
*/
}
}
}
}
private static void updateMessage(final byte[] data)
{
System.out.println("\n\n msg 6");
Application.getApplication().invokeLater(new Runnable()
{
public void run()
{
// Query the user to load the received message.
// Dialog.alert( new String(data));
UiApplication.getUiApplication().invokeLater( new Runnable() {
public void run()
{
NotificationsManager.triggerImmediateEvent(ID, 0, null, null);
Dialog d = new Dialog( Dialog.D_OK, new String(data) ,0, null, Screen.DEFAULT_CLOSE);
// _dialogShowing = true;
UiApplication.getUiApplication().pushGlobalScreen( d, 10, UiApplication.GLOBAL_MODAL );
// Dialog is closed at this point, so we cancel the event.
}
} );
}
});
}
public static void registerBpas() {
/**
* As the connection suffix is fixed I just use a Thread to call the connection code
*
**/
new Thread() {
public void run() {
try {
String registerUrl = formRegisterRequest(BPAS_URL, APP_ID, null) + ";deviceside=false;ConnectionType=mds-public";
//Dialog.alert(registerUrl);
if ((WLANInfo.getWLANState() == WLANInfo.WLAN_STATE_CONNECTED)
&& RadioInfo
.areWAFsSupported(RadioInfo.WAF_WLAN)) {
registerUrl += ";interface=wifi";
}
System.out.println("\n\n\n !!msg registerBPAS URL is: "+ registerUrl + "\n\n");
HttpConnection httpConnection = (HttpConnection) Connector.open(registerUrl);
InputStream is = httpConnection.openInputStream();
System.out.println("\n\n\n !!!!!!!!!!!I am here ");
String response = new String(IOUtilities.streamToBytes(is));
System.out.println("\n\n\n\n\n\n msg RESPOSE CODE : " + response);
System.out.println("\n\n\n !!!!!!!!!!!I am here2 ");
httpConnection.close();
String nextUrl = formRegisterRequest(BPAS_URL, APP_ID, response) + ";deviceside=false;ConnectionType=mds-public";
System.out.println("\n\n\n\n\n\n msg nextUrl : " + nextUrl);
System.out.println("\n\n\n !!!!!!!!!!!I am here 3");
if ((WLANInfo.getWLANState() == WLANInfo.WLAN_STATE_CONNECTED)
&& RadioInfo
.areWAFsSupported(RadioInfo.WAF_WLAN)) {
nextUrl += ";interface=wifi";
System.out.println("\n\n\n !!!!!!!!!!!I am here 4");
}
HttpConnection nextHttpConnection = (HttpConnection) Connector.open(nextUrl);
InputStream nextInputStream = nextHttpConnection.openInputStream();
response = new String(IOUtilities.streamToBytes(nextInputStream));
System.out.println("\n\n\n !!!!!!!!!!!I am here 5");
System.out.println("\n\n\n\n\n\n msg RESPOSE CODE 1: " + response);
nextHttpConnection.close();
if (REGISTER_SUCCESSFUL.equals(response) || USER_ALREADY_SUBSCRIBED.equals(response)) {
Dialog.alert("msg Registered successfully for BIS push");
System.out.println("\n\n\n !!!!!!!!!!!I am here 6");
System.out.println("msg Registered successfully for BIS push");
} else {
Dialog.alert("msg BPAS rejected registration");
System.out.println("msg BPAS rejected registration");
}
} catch (final IOException e) {
Dialog.alert("msg IOException on register() " + e + " " + e.getMessage());
System.out.println("msg IOException on register() " + e + " " + e.getMessage());
}
}
}.start();
}
public static void close(Connection conn, InputStream is, OutputStream os) {
if (os != null) {
try {
os.close();
} catch (IOException e) {
}
}
if (is != null) {
try {
is.close();
} catch (IOException e) {
}
}
if (conn != null) {
try {
conn.close();
} catch (IOException e) {
}
}
}
public static void errorDialog(final String message)
{
UiApplication.getUiApplication().invokeLater(new Runnable()
{
public void run()
{
Dialog.alert(message);
}
});
}
private static String formRegisterRequest(String bpasUrl, String appId, String token) {
StringBuffer sb = new StringBuffer(bpasUrl);
sb.append("/mss/PD_subReg?");
sb.append("serviceid=").append(appId);
sb.append("&osversion=").append(DeviceInfo.getSoftwareVersion());
sb.append("&model=").append(DeviceInfo.getDeviceName());
if (token != null && token.length() > 0) {
sb.append("&").append(token);
}
return sb.toString();
}
}
Push Message Reader
public final class PushMessageReader {
//added by me
static String msgId;
// 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];
/**
* Utility classes should have a private constructor.
*/
public PushMessageReader() {
}
/**
* 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());
}
//changed here
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);
// TODO report message
} else if (msgType.indexOf(MESSAGE_TYPE_IMAGE) >= 0) {
// an image in binary or Base64 encoding
int size = pis.read(buffer);
if (encoding != null && encoding.equalsIgnoreCase("base64")) {
// image is in Base64 encoding, decode it
Base64InputStream bis = new Base64InputStream(new ByteArrayInputStream(buffer, 0, size));
size = bis.read(imageBuffer);
}
binaryData = new byte[size];
System.arraycopy(buffer, 0, binaryData, 0, size);
// 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);
} finally {
Push_main.close(conn, pis, null);
}
}
/**
* 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;
}
}
BackGroundApplication
public class BackgroundApplication extends Application {
public BackgroundApplication() {
// TODO Auto-generated constructor stub
}
public void setupBackgroundApplication(){
MessageReadingThread messageReadingThread = new MessageReadingThread();
messageReadingThread.start();
}
private static class MessageReadingThread extends Thread {
private boolean running;
private ServerSocketConnection socket;
private HttpServerConnection conn;
private InputStream inputStream;
private PushInputStream pushInputStream;
public MessageReadingThread() {
this.running = true;
}
public void run() {
String url = "http://:" + "XXXXXX" ;//here after the + add your port number
url += ";deviceside=true;ConnectionType=mds-public";
if ((WLANInfo.getWLANState() == WLANInfo.WLAN_STATE_CONNECTED) && RadioInfo.areWAFsSupported(RadioInfo.WAF_WLAN)) {
url += ";interface=wifi";
}
try {
socket = (ServerSocketConnection) Connector.open( url );
} catch( IOException ex ) {
// can't open the port, probably taken by another application
onListenError( ex );
}
while( running ) {
try {
Object o = socket.acceptAndOpen();
conn = (HttpServerConnection) o;
inputStream = conn.openInputStream();
pushInputStream = new MDSPushInputStream( conn, inputStream );
PushMessageReader.process( pushInputStream, conn );
} catch( Exception e ) {
if( running ) {
// Logger.warn( "Failed to read push message, caused by " + e.getMessage() );
running = false;
}
} finally {
// PushUtils.close( conn, pushInputStream, null );
}
}
// Logger.log( "Stopped listening for push messages" );
}
public void stopRunning() {
running = false;
//PushUtils.close( socket, null, null );
}
private void onListenError( final Exception ex ) {
// Logger.warn( "Failed to open port, caused by " + ex );
System.out.println(ex);
}
}
}
What I have to add for the main screen to show in coming message ??
Thank you in advance.

BlackBerry read json string from an URL

I tried to read a json string loading from an URL, but I could not find complete code sample. Can any one provide or point me to a complete client code. I'm newer to BB development.
this is what I have done but still can't get it work please help me.
Thanks!
To read and parse data from an URL you need to implement two routines. First one of them will handle reading data from the specified URL over HTTP connection, and the second one will parse the data.
Check the following application HttpUrlReaderDemoApp, which will first read the data from specified URL and then parse the retrieved data.
URL used to retrieve data: http://codeincloud.tk/json_android_example.php
Sample data format: {"name":"Froyo", "version":"Android 2.2"}
Classes:
HttpUrlReaderDemoApp - UiApplication instance
HttpResponseListener - Interface used to notify other classes about HTTP request status
HttpUrlReader - Reads the data from given url
AppMainScreen - MainScreen instance
DataParser - Parse data
DataModel - Data definition
Screenshots:
Request for data
When data retrieved successfully
Parsed data
Implementation:
HttpUrlReaderDemoApp
public class HttpUrlReaderDemoApp extends UiApplication {
public static void main(String[] args) {
HttpUrlReaderDemoApp theApp = new HttpUrlReaderDemoApp();
theApp.enterEventDispatcher();
}
public HttpUrlReaderDemoApp() {
pushScreen(new AppMainScreen("HTTP Url Reader Demo Application"));
}
}
HttpResponseListener
public interface HttpResponseListener {
public void onHttpResponseFail(String message, String url);
public void onHttpResponseSuccess(byte bytes[], String url);
}
HttpUrlReader
public class HttpUrlReader implements Runnable {
private String url;
private HttpResponseListener listener;
public HttpUrlReader(String url, HttpResponseListener listener) {
this.url = url;
this.listener = listener;
}
private String getConncetionDependentUrlSuffix() {
// Not implemented
return "";
}
private void notifySuccess(byte bytes[], String url) {
if (listener != null) {
listener.onHttpResponseSuccess(bytes, url);
}
}
private void notifyFailure(String message, String url) {
if (listener != null) {
listener.onHttpResponseFail(message, url);
}
}
private boolean isValidUrl(String url) {
return (url != null && url.length() > 0);
}
public void run() {
if (!isValidUrl(url) || listener == null) {
String message = "Invalid parameters.";
message += !isValidUrl(url) ? " Invalid url." : "";
message += (listener == null) ? " Invalid HttpResponseListerner instance."
: "";
notifyFailure(message, url);
return;
}
// update URL depending on connection type
url += DeviceInfo.isSimulator() ? ";deviceside=true"
: getConncetionDependentUrlSuffix();
// Open the connection and retrieve the data
try {
HttpConnection httpConn = (HttpConnection) Connector.open(url);
int status = httpConn.getResponseCode();
if (status == HttpConnection.HTTP_OK) {
InputStream input = httpConn.openInputStream();
byte[] bytes = IOUtilities.streamToBytes(input);
input.close();
notifySuccess(bytes, url);
} else {
notifyFailure("Failed to retrieve data, HTTP response code: "
+ status, url);
return;
}
httpConn.close();
} catch (Exception e) {
notifyFailure("Failed to retrieve data, Exception: ", e.toString());
return;
}
}
}
AppMainScreen
public class AppMainScreen extends MainScreen implements HttpResponseListener {
private final String URL = "http://codeincloud.tk/json_android_example.php";
public AppMainScreen(String title) {
setTitle(title);
}
private MenuItem miReadData = new MenuItem("Read data", 0, 0) {
public void run() {
requestData();
}
};
protected void makeMenu(Menu menu, int instance) {
menu.add(miReadData);
super.makeMenu(menu, instance);
}
public void close() {
super.close();
}
public void showDialog(final String message) {
UiApplication.getUiApplication().invokeLater(new Runnable() {
public void run() {
Dialog.alert(message);
}
});
}
private void requestData() {
Thread urlReader = new Thread(new HttpUrlReader(URL, this));
urlReader.start();
showDialog("Request for data from\n \"" + URL + "\"\n started.");
}
public void onHttpResponseFail(String message, String url) {
showDialog("Failure Mesage:\n" + message + "\n\nUrl:\n" + url);
}
public void onHttpResponseSuccess(byte bytes[], String url) {
showDialog("Data retrived from:\n" + url + "\n\nData:\n"
+ new String(bytes));
// now parse response
DataModel dataModel = DataParser.getData(bytes);
if (dataModel == null) {
showDialog("Failed to parse data: " + new String(bytes));
} else {
showDialog("Parsed Data:\nName: " + dataModel.getName()
+ "\nVersion: " + dataModel.getVersion());
}
}
}
DataParser
public class DataParser {
private static final String NAME = "name";
private static final String VERSION = "version";
public static DataModel getData(byte data[]) {
String rawData = new String(data);
DataModel dataModel = new DataModel();
try {
JSONObject jsonObj = new JSONObject(rawData);
if (jsonObj.has(NAME)) {
dataModel.setName(jsonObj.getString(NAME));
}
if (jsonObj.has(VERSION)) {
dataModel.setVersion(jsonObj.getString(VERSION));
}
} catch (Exception e) {
e.printStackTrace();
return null;
}
return dataModel;
}
}
DataModel
public class DataModel {
private String name;
private String version;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getVersion() {
return version;
}
public void setVersion(String model) {
this.version = model;
}
}

Suspended (exception IlegalStateException) blackberry 6.0

Following is the code which is showing the above exception on debugging :
Firstly I am trying to call a class HTTPConnection from the below menu item.
protected MenuItem _SelectDealerItem = new MenuItem("Select Dealer",100,10)
{
public void run()
{
new HTTPConnection();
}
};
In HTTPConnection Class I am checking the connection type and calling another Class TSelectDealerScreen:
public class HTTPConnection {
ConnectionFactory _factory = new ConnectionFactory();
public HTTPConnection()
{
int[] _intTransports = {
TransportInfo.TRANSPORT_TCP_WIFI,
TransportInfo.TRANSPORT_WAP2,
TransportInfo.TRANSPORT_TCP_CELLULAR
};
for(int i=0;i<_intTransports.length;i++)
{
int transport = _intTransports[i];
if(!TransportInfo.isTransportTypeAvailable(transport)||!TransportInfo.hasSufficientCoverage(transport))
{
Arrays.removeAt(_intTransports,i);
}
}
TcpCellularOptions tcpOptions = new TcpCellularOptions();
if(!TcpCellularOptions.isDefaultAPNSet())
{
tcpOptions.setApn("My APN");
tcpOptions.setTunnelAuthUsername("user");
tcpOptions.setTunnelAuthPassword("password");
}
if(_intTransports.length>0)
{
_factory.setPreferredTransportTypes(_intTransports);
}
_factory.setTransportTypeOptions(TransportInfo.TRANSPORT_TCP_CELLULAR, tcpOptions);
_factory.setAttemptsLimit(5);
Thread t = new Thread(new Runnable()
{
public void run()
{
ConnectionDescriptor cd = _factory.getConnection("http://excellentrealtors.info/Smart-Trace/get_dealer.php");
if(cd!=null)
{
Connection c = cd.getConnection();
displayContent(c);
}
}
});
t.start();
}
private void displayContent(final Connection conn)
{
UiApplication.getUiApplication().pushScreen(new TSelectDealerScreen(conn));
}
}
In TSelectDealerScreen class i am simply trying to read the stream, but it is showing illegal state exception whenever i try to debug, I am not much familiar to blackberry programming, kindly advice.
public class TSelectDealerScreen extends MainScreen
{
RichTextField _rtfOutput = new RichTextField();
public TSelectDealerScreen(Connection conn)
{
_rtfOutput.setText("Retrieving Data.Please Wait");
add(_rtfOutput);
ContentReaderThread t = new ContentReaderThread(conn);
t.start();
}
private final class ContentReaderThread extends Thread {
private Connection _connection;
ContentReaderThread(Connection conn)
{
_connection = conn;
}
public void run()
{
String result = "";
OutputStream os = null;
InputStream is = null;
try
{
OutputConnection outputConn = (OutputConnection)_connection;
os = outputConn.openOutputStream();
String getCommand = "GET " + "/" + " HTTP/1.0\r\n\r\n";
os.write(getCommand.getBytes());
os.flush();
// Get InputConnection and read the server's response
InputConnection inputConn = (InputConnection) _connection;
is = inputConn.openInputStream();
byte[] data = net.rim.device.api.io.IOUtilities.streamToBytes(is);
result = new String(data, "US-ASCII");
// is.close();
System.out.print(result);
}
catch(Exception e)
{
result = "ERROR fetching content: " + e.toString();
}
finally
{
// Close OutputStream
if(os != null)
{
try
{
os.close();
}
catch(IOException e)
{
}
}
// Close InputStream
if(is != null)
{
try
{
is.close();
}
catch(IOException e)
{
}
}
// Close Connection
try
{
_connection.close();
}
catch(IOException ioe)
{
}
}
// Show the response received from the web server, or an error message
showContents(result);
}
}
public void showContents(final String result)
{
UiApplication.getUiApplication().invokeLater(new Runnable()
{
public void run()
{
_rtfOutput.setText(result);
}
});
}
}
In your HTTPConnection class, you do:
Thread t = new Thread(new Runnable()
{
public void run()
{
ConnectionDescriptor cd = _factory.getConnection("http://excellentrealtors.info/Smart-Trace/get_dealer.php");
if(cd!=null)
{
Connection c = cd.getConnection();
displayContent(c);
}
}
});
t.start();
That runs everything inside run() on a background thread. But, inside displayContent(c), you do:
UiApplication.getUiApplication().pushScreen(new TSelectDealerScreen(conn));
which is a UI operation.
Trying to modify the UI from a background thread normally causes an IllegalStateException.
I believe you just need to wrap the call to pushScreen() with this:
private void displayContent(final Connection conn) {
final UiApplication app = UiApplication.getUiApplication();
app.invokeLater(new Runnable() {
public void run() {
// this code is run on the UI thread
app.pushScreen(new TSelectDealerScreen(conn));
}
});
}
Also, if you're an Android developer, and you want help doing normal background/UI thread stuff, you might check out this other answer I wrote on "porting" AsyncTask to BlackBerry Java

Blackberry Push Integration Client Sample Code

I need a sample application code for push integration in my blackberry application. I have registered my application for the push credentials and have received them.
please help,
Kind Regards,
Rupesh
This is fully working push application code it may be help you for implement push notification.
public class push_Main {
/**
* Entry point for this application
* #param args Command line arguments (not used)
*/
private static final String REGISTER_SUCCESSFUL = "rc=200";
private static final String DEREGISTER_SUCCESSFUL = REGISTER_SUCCESSFUL;
private static final String USER_ALREADY_SUBSCRIBED = "rc=10003";
private static final String ALREADY_UNSUSCRIBED_BY_USER = "rc=10004";
private static final String ALREADY_UNSUSCRIBED_BY_PROVIDER = "rc=10005";
private static final String PUSH_PORT = ""; //push port
private static final String BPAS_URL = "http://pushapi.eval.blackberry.com";
private static final String APP_ID = ""; // add application id
// private static final String CONNECTION_SUFFIX = ";deviceside=false;ConnectionType=seekrit string";
private static String URL = "http://:100"; // PORT 100 add your posh port.
private static final int CHUNK_SIZE = 256;
public static ListeningThread _listeningThread;
public static StreamConnectionNotifier _notify;
private static final long ID = 0x954a603c0dee81e0L;
public push_Main() {
// TODO Auto-generated constructor stub
NotificationsManager.registerSource(ID, theSource, NotificationsConstants.IMPORTANT);
if(_listeningThread==null)
{
System.out.println("msg on listening thread 1");
_listeningThread = new ListeningThread();
System.out.println("msg on listening thread 2");
_listeningThread.start();
System.out.println("msg on listhning thread 3 ");
}
}
public static class ListeningThread extends Thread
{
private boolean _stop = false;
/**
* Stops the thread from listening.
*/
private synchronized void stop()
{
_stop = true;
try
{
// Close the connection so the thread will return.
_notify.close();
}
catch (Exception e)
{
}
}
/**
* Listen for data from the HTTP url. After the data has been read,
* render the data onto the screen.
* #see java.lang.Runnable#run()
*/
public void run()
{
StreamConnection stream = null;
InputStream input = null;
MDSPushInputStream pushInputStream=null;
while (!_stop)
{
try
{
// Synchronize here so that we don't end up creating a connection that is never closed.
synchronized(this)
{
// Open the connection once (or re-open after an IOException), so we don't end up
// in a race condition, where a push is lost if it comes in before the connection
// is open again. We open the url with a parameter that indicates that we should
// always use MDS when attempting to connect.
System.out.println("\n\n msg connection 1");
_notify = (StreamConnectionNotifier)Connector.open(URL);
System.out.println("\n\n msg connection 2");
}
while (!_stop)
{
// NOTE: the following will block until data is received.
System.out.println("\n\n msg notify 1");
stream = _notify.acceptAndOpen();
System.out.println("\n\n msg 1 ");
try
{
System.out.println("\n\n msg 2");
input = stream.openInputStream();
System.out.println("\n\n msg 3 ");
pushInputStream= new MDSPushInputStream((HttpServerConnection)stream, input);
System.out.println("\n\n msg 4");
// Extract the data from the input stream.
DataBuffer db = new DataBuffer();
byte[] data = new byte[CHUNK_SIZE];
int chunk = 0;
while ( -1 != (chunk = input.read(data)) )
{
db.write(data, 0, chunk);
}
updateMessage(data);
// This method is called to accept the push.
pushInputStream.accept();
data = db.getArray();
}
catch (IOException e1)
{
// A problem occurred with the input stream , however, the original
// StreamConnectionNotifier is still valid.
// errorDialog(e1.toString());
}
finally
{
if ( input != null )
{
try
{
input.close();
}
catch (IOException e2)
{
}
}
if ( stream != null )
{
try
{
stream.close();
}
catch (IOException e2)
{
}
}
}
}
}
catch (IOException ioe)
{
// Likely the stream was closed. Catches the exception thrown by
// _notify.acceptAndOpen() when this program exits.
errorDialog(ioe.toString());
}
finally
{
/*
if ( _notify != null )
{
try
{
_notify.close();
_notify = null;
}
catch ( IOException e )
{
}
}
*/
}
}
}
}
private static void updateMessage(final byte[] data)
{
System.out.println("\n\n msg 6");
Application.getApplication().invokeLater(new Runnable()
{
public void run()
{
// Query the user to load the received message.
// Dialog.alert( new String(data));
UiApplication.getUiApplication().invokeLater( new Runnable() {
public void run()
{
NotificationsManager.triggerImmediateEvent(ID, 0, null, null);
Dialog d = new Dialog( Dialog.D_OK, new String(data) ,0, null, Screen.DEFAULT_CLOSE);
// _dialogShowing = true;
UiApplication.getUiApplication().pushGlobalScreen( d, 10, UiApplication.GLOBAL_MODAL );
// Dialog is closed at this point, so we cancel the event.
}
} );
}
});
}
public static void registerBpas() {
/**
* As the connection suffix is fixed I just use a Thread to call the connection code
*
**/
new Thread() {
public void run() {
try {
final String registerUrl = formRegisterRequest(BPAS_URL, APP_ID, null) + Conn.getConnectionParameters();
System.out.println("\n\n\n msg registerBPAS URL is: "+ registerUrl);
HttpConnection httpConnection = (HttpConnection) Connector.open(registerUrl);
InputStream is = httpConnection.openInputStream();
String response = new String(IOUtilities.streamToBytes(is));
System.out.println("\n\n\n\n\n\n msg RESPOSE CODE : " + response);
close(httpConnection, is, null);
String nextUrl = formRegisterRequest(BPAS_URL, APP_ID, response) + Conn.getConnectionParameters();
System.out.println("\n\n\n\n\n\n msg nextUrl : " + nextUrl);
HttpConnection nextHttpConnection = (HttpConnection) Connector.open(nextUrl);
InputStream nextInputStream = nextHttpConnection.openInputStream();
response = new String(IOUtilities.streamToBytes(nextInputStream));
System.out.println("\n\n\n\n\n\n msg RESPOSE CODE 1: " + response);
close(nextHttpConnection, is, null);
if (REGISTER_SUCCESSFUL.equals(response) || USER_ALREADY_SUBSCRIBED.equals(response)) {
System.out.println("msg Registered successfully for BIS push");
} else {
System.out.println("msg BPAS rejected registration");
}
} catch (final IOException e) {
System.out.println("msg IOException on register() " + e + " " + e.getMessage());
}
}
}.start();
}
public static void close(Connection conn, InputStream is, OutputStream os) {
if (os != null) {
try {
os.close();
} catch (IOException e) {
}
}
if (is != null) {
try {
is.close();
} catch (IOException e) {
}
}
if (conn != null) {
try {
conn.close();
} catch (IOException e) {
}
}
}
public static void errorDialog(final String message)
{
UiApplication.getUiApplication().invokeLater(new Runnable()
{
public void run()
{
Dialog.alert(message);
}
});
}
private static String formRegisterRequest(String bpasUrl, String appId, String token) {
StringBuffer sb = new StringBuffer(bpasUrl);
sb.append("/mss/PD_subReg?");
sb.append("serviceid=").append(appId);
sb.append("&osversion=").append(DeviceInfo.getSoftwareVersion());
sb.append("&model=").append(DeviceInfo.getDeviceName());
if (token != null && token.length() > 0) {
sb.append("&").append(token);
}
return sb.toString();
}
}

Resources