I'm using following code to forward streaming media. But it is giving me exception seeking not allowed on media.
Is there any way to seek streaming media in blackberry?
private void forwardPlayer(){
if(isPlaying){
try {
long prevTime = player.getMediaTime()/1000000;
final long newTime = prevTime + 5;
if(newTime <= player.getDuration()/1000000){
Thread t = new Thread(new Runnable() {
public void run() {
try {
player.setMediaTime(newTime * 1000000);
} catch (final MediaException e) {
UiApplication.getUiApplication().invokeLater(new Runnable() {
public void run() {
Dialog.inform("forward "+e.toString());
}
});
}
}
});
t.start();
}
} catch (final Exception e) {
UiApplication.getUiApplication().invokeLater(new Runnable() {
public void run() {
Dialog.inform("forward "+e.toString());
}
});
}
}
}
At the risk of stating the obvious, the reason why you cannot seek on your media is almost certainly because it is not possible to do so.
One solution would be to stream the data from your remote media source into a buffer which you can then seek on. Check out Streaming media - Start to finish for reference code.
Related
I am developing one Phone Application. In that my requirement is when the receiver accepts the call then I give an alert(a small sound) at caller(who is calling) side that caller thinks that receiver accepts the call.
For this I am using the following code for an alert method when call is connected:
public void callConnected(int callId)
{
Alert.startAudio(GetTone.TUNE, 80);
try
{
System.out.println("====================Start Audio: "+System.currentTimeMillis());
Thread.sleep(2000);
Alert.stopAudio();
}
catch (Exception e)
{
e.printStackTrace();
}
}
But I am not getting any TUNE sound.
Am I did correct or not?
If not give some solution for this.
I get the sound from this small code:
public static short frequency = 1046;
public static short duration = 200;
public static int volume = 100;
and whenever I want the sound call this method:
public static void beepSound()
{
UiApplication.getUiApplication().invokeLater(new Runnable()
{
public void run()
{
Alert.startAudio(new short[]{frequency, duration}, volume);
}
});
}
Then I got the beep sound.
I have read the knowledgebase article "Streaming media - Start to finish" It is working fine. When I click the open video, the player screen is open. When I click the back button before the player is realized, it does not come to back to the right screen.
when sp.realize(); method executing user can't come to back screen.
after loading player. it close.
How to go back a screen if sp.realize() method is still executing?
new Thread(new Runnable()
{
public void run()
{
try
{
if(sp==null)
{
sp = new StreamingPlayer(url, contentType);
sp.setBufferCapacity(bufferCapacity);
sp.setInitialBuffer(initBuffer);
sp.setRestartThreshold(restartThreshold);
sp.setBufferLeakSize(bufferLeakSize);
sp.setConnectionTimeout(connectionTimeout);
sp.setLogLevel(logLevel);
sp.enableLogging(eventLogEnabled, sdLogEnabled);
sp.addStreamingPlayerListener(playerScreen);
sp.realize();
volC = (VolumeControl)sp.getControl("VolumeControl");
if(contentType.toLowerCase().indexOf("video")!=-1)
{
vidC = (VideoControl)sp.getControl("VideoControl");
videoField = (Field)vidC.initDisplayMode(VideoControl.USE_GUI_PRIMITIVE, "net.rim.device.api.ui.Field");
vidC.setDisplaySize(Display.getWidth(), Display.getHeight()-timeSeeker.getHeight()-byteSeeker.getHeight());
UiApplication.getUiApplication().invokeLater(new Runnable()
{
public void run()
{
replace(getField(0), videoField);
}
});
vidC.setVisible(true);
}
if(contentType.toLowerCase().indexOf("audio")!=-1)
{
audioIcon = true;
if(!(getField(0)==albumArt))
{
UiApplication.getUiApplication().invokeLater(new Runnable(){
public void run()
{
replace(videoField, (Field)albumArt);
}
});
}
}
sp.start();
}
else
{
sp.stop();
sp.close();
sp = null;
run();
}
} catch(Throwable t)
{
//log(t.toString());
}
}
}).start();
I'm not sure exactly what you mean by this. However, have you tried running the audio stuff in a separate thread? That should reduce the likelihood of it interfering with anything else.
I am trying to download xml files from server when my application starts. So i want to show splash screen until am done with downloading and then show next screen. below is my code:
Here, i want to show My splash screen when getTopNotDoc() method is under execution. and after completion of that method show next screen.
//get _topics and notification document<br>
_getDoc = new ServerConnectivity(this);
public class ServerConnectivity {
private Document _questionDoc;
private Document _topics;
private Document _notifications;
public ServerConnectivity(ApplicationSession appSession){
//getTopNotDoc();
_this = this;
_appSession = appSession;
new Thread(new Runnable(){
public void run(){
getTopNotDoc();
}
}).start();
}
}
private void getTopNotDoc(){
InputStream inputStream = null ;
try{
// Build a document based on the XML file.
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
DocumentBuilder builder = factory.newDocumentBuilder();
inputStream = getClass().getResourceAsStream("topics.xml");
_topics = builder.parse( inputStream );
inputStream = getClass().getResourceAsStream("notification.xml");
_notifications = builder.parse( inputStream );
if(_topics == null || _notifications == null){
Dialog.alert("Unable to connect to internet");
}
}
catch ( Exception e ){
System.out.println( e.toString() );
}
finally{
if(inputStream != null){
try {
inputStream.close();
}
catch (IOException e) {
e.printStackTrace();
}
}
}
}
Usually when I do this, I create a loading screen, then I just extend the Thread class.
So I would create a loading screen like this:
public class LoadingScreen extends MainScreen {
public LoadingScreen() {
super();
this.setTitle("loading...");
// add a spinning animated gif or whatever here
final Screen me = this;
new Thread(new Runnable(){
public void run(){
// do something that takes a long time
try { Thread.sleep(1000);} catch (Exception e) {}
}
}){
public void run() {
super.run();
synchronized (UiApplication.getEventLock()) {
UiApplication.getUiApplication().popScreen(me);
}
}
}.start();
}
}
Then I push this screen, it will perform the long task, and then pop itself when its done.
(you may or may not want to disable the back button and menus on this screen)
I made the Runnable as an anonymous inner class just to compact the code, but you probably have this code already in a class somewhere else, so you would pass it in instead.
To add some flexibility and keep your classes loosely coupled together, you could make some modifications to your ServerConnectivity class so your calls could go something like the following:
// push your splash screen on to the stack
//
final SplashScreen splashScreen = new SplashScreen();
UiApplication.getUiApplication().pushScreen(splashScreen);
_getDoc = new ServerConnectivity(this, new ServerConnectivityListener() {
public void onCompleted(ServerConnectivity sender) {
// display next screen
//
UiApplication.getUiApplication().invokeLater(new Runnable() {
public void run() {
splashScreen.close();
UiApplication.getUiApplication().pushScreen(new NextScreen());
}
});
}
public void onError(ServerConnectivity sender) {
splashScreen.close();
// display error message, retry, etc...
}
});
For this to work, you need an interface with the following definition:
public interface ServerConnectivityListener {
void onCompleted(ServerConnectivity sender);
void onError(ServerConnectivity sender);
}
So, your ServerConnectivity class maintains a reference to some object that implements the interface called ServerConnectivityListener This allows you to maintain loose coupling between the subject class and any observers that need to listen for events.
Within ServerConnectivity, you would make calls to the listener's methods something like this:
// begin excerpt from above...
//
if(_topics == null || _notifications == null) {
_listener.onError(this);
} else {
_listener.onCompleted(this);
}
catch ( Exception e ){
System.out.println( e.toString() );
_listener.onError(this);
//
// end excerpt from above...
Here is code for splash screen in java........after and call that view.........
http://www.randelshofer.ch/oop/javasplash/javasplash.html
import java.awt.*;
import java.awt.event.*;
public class SplashTest extends Frame implements ActionListener {
static void renderSplashFrame(Graphics2D g, int frame) {
final String[] comps = {"foo", "bar", "baz"};
g.setComposite(AlphaComposite.Clear);
g.fillRect(130,250,280,40);
g.setPaintMode();
g.setColor(Color.BLACK);
g.drawString("Loading "+comps[(frame/5)%3]+"...", 130, 260);
g.fillRect(130,270,(frame*10)%280,20);
}
public SplashTest() {
super("SplashScreen demo");
setSize(500, 300);
setLayout(new BorderLayout());
Menu m1 = new Menu("File");
MenuItem mi1 = new MenuItem("Exit");
m1.add(mi1);
mi1.addActionListener(this);
MenuBar mb = new MenuBar();
setMenuBar(mb);
mb.add(m1);
final SplashScreen splash = SplashScreen.getSplashScreen();
if (splash == null) {
System.out.println("SplashScreen.getSplashScreen() returned null");
return;
}
Graphics2D g = (Graphics2D)splash.createGraphics();
if (g == null) {
System.out.println("g is null");
return;
}
for(int i=0; i<100; i++) {
renderSplashFrame(g, i);
splash.update();
try {
Thread.sleep(200);
}
catch(InterruptedException e) {
}
}
splash.close();
setVisible(true);
toFront();
}
public void actionPerformed(ActionEvent ae) {
System.exit(0);
}
public static void main (String args[]) {
SplashTest test = new SplashTest();
}
}
Since,it is a thread based one,We cannot do it the normal way.So Check the following link
http://supportforums.blackberry.com/t5/Java-Development/What-is-the-Event-Thread/ta-p/446865
and Check whether parsing is done,Until that have the same screen,Check the condition of whehter it is downloaded or not ,and then push the screen
Suppose this is my NeteorkingMainScreen class which will display the text retrived from web.
public NetworkingMainScreen() {
setTitle("Networking");
urlField = new EditField("URL:", "");
textOutputField = new RichTextField();
add(urlField);
add(textOutputField);
}
protected void makeMenu(Menu menu, int instance) {
super.makeMenu(menu, instance);
menu.add(new MenuItem("Get", 10, 10) {
public void run() {
getURL();
}
});
private void getURL() {
HttpRequestDispatcher dispatcher = new HttpRequestDispatcher(urlField.getText(),"GET", this);
dispatcher.start();
}
//*********************************************************************************
//HttpRequestDispatcher class performs the downloading of contents of webpage.
public class HttpRequestDispatcher extends Thread {
private String url;
private String method; // GET or POST
private NetworkingMainScreen screen;
public HttpRequestDispatcher(String url, String method, NetworkingMainScreen screen){
this.url = url;
this.method = method;
this.screen = screen;
}
public void run() {
try{
HttpConnection connection = (HttpConnection)Connector.open(url);
connection.setRequestMethod(method);
int responseCode = connection.getResponseCode();
if (responseCode != HttpConnection.HTTP_OK){
screen.requestFailed("Unexpected response code: " + responseCode);
connection.close();
return;
}
String contentType = connection.getHeaderField("Content-type");
ByteArrayOutputStream baos = new ByteArrayOutputStream();
InputStream responseData = connection.openInputStream();
byte[] buffer = new byte[10000];
int bytesRead = responseData.read(buffer);
while(bytesRead > 0) {
baos.write(buffer, 0, bytesRead);
bytesRead = responseData.read(buffer);
}
baos.close();
connection.close();
screen.requestSucceeded(baos.toByteArray(), contentType);
}
catch (IOException ex) {
screen.requestFailed(ex.toString());
}
}
}
//***************************************************************************
//WaitScreen displays animation till the downloading is completed.
class WaitScreen extends FullScreen
{
}
Now I m getting confused...
When to start the WaitScreen class. Suppose i start by creating an object of WaitScreen and pushing the screen object.
protected void makeMenu(Menu menu, int instance) {
super.makeMenu(menu, instance);
menu.add(new MenuItem("Get", 10, 10) {
public void run()
UiApplication.getUiApplication.pushScreen(new WaitScreen());
getURL();
}
});
How would my code know that it should displaying the animated Screen and display the contents of the webpages ie i mean how my code will knows downloading data has been completed. ie when i will call popScreen()?
I interface is to be used how can use the interface and what help we will get by using the interface.? Plz help
This is rather simple.
Your HttpRequestDispatcher should have a handle to the WaitScreen instance to be able to show it on start and close it upon completion.
So inside of the HttpRequestDispatcher you could (1) create the WaitScreen. (2) Push it. (3) Do the stuff the HttpRequestDispatcher should do. (4) Pop the the WaitScreen. Smth like that:
final WaitScreen waitScreen = new WaitScreen();
// just to reduce code duplication
final UiApplication app = UiApplication.getUiApplication();
// we are on the non-UI thread, so need
// to use UiApplication.invokeLater(Runnable action),
// it safely runs the passed action on the UI thread
app.invokeLater(new Runnable() {
public void run() {
app.pushScreen(waitScreen);
}
});
try {
// main networking actions go here
} catch (..) {
// error handling goes here
} finally {
// make sure we close the waitScreen
app.invokeLater(new Runnable() {
public void run() {
app.popScreen(waitScreen);
}
});
}
Here, Try this. All you have to do is put your code into the "run" function.
If you want help with the HttpRequest stuff or have trouble with the classes there, let me know. I have a web library with thread classes set up to use the classes within that post.
I want to change the image in my application screen periodically.
how can i implement it ?
is there any timer control(like in iPhone) for BlackBerry ?
waiting for your suggessions...
thanks in advance...
try this.
try {
timer = new Timer();
timer.scheduleAtFixedRate(new ImageTask(), 0, 5000);
} catch (Exception e) {
// do nothing
}
private class ImageTask extends TimerTask {
public void run() {
System.out.println("Test Printing..");
}
}