Boa Tarde a Todos.
Galera, segui o exemplo abaixo de um livro de mmapi e o video carrega(vejo que o meu wireless pisca muito rápido para acessar), porém a tela fica preta e não mostra nada:import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
import javax.microedition.media.*;
import javax.microedition.media.control.*;
public class Video extends MIDlet implements CommandListener
{
// the list to show the choice - form or canvas
private List list = null;
// the canvas to display the video on
private Canvas canvas = null;
// the form to add the video to
private Form form = null;
// a string item to add to form
private StringItem descriptionItem = null;
// the video player
Player player = null;
// commands
private Command backCommand = null;
private Command exitCommand = null;
// alert to show messages on
private Alert alert = null;
// and the display
private Display display = null;
// a flag to indicate error
private boolean error = false;
public Video()
{
// create the visual elements
display = Display.getDisplay(this);
exitCommand = new Command("Exit", Command.EXIT, 1);
backCommand = new Command("Back", Command.ITEM, 1);
// VideoCanvas is a non public class in this file
canvas = new VideoCanvas();
canvas.addCommand(exitCommand);
canvas.addCommand(backCommand);
canvas.setCommandListener(this);
// create the form and add items and commands to it
form = new Form("Video Form", null);
descriptionItem = new StringItem("Desc: ", "Sydney Harbour - Bad audio");
form.append(descriptionItem);
form.addCommand(exitCommand);
form.addCommand(backCommand);
form.setCommandListener(this);
// create the list
list = new List("Pick One", List.IMPLICIT);
list.append("Play Video on Form", null);
list.append("Play Video on Canvas", null);
list.addCommand(exitCommand);
list.setCommandListener(this);
// and an alert for errors
alert = new Alert("Error");
}
public void startApp()
{
if(error) return;
display.setCurrent(list); // show the list if no errors
}
public void pauseApp() {
}
public void destroyApp(boolean unconditional) {
// close the player instance
try {
if(player != null) player.close();
} catch(Exception e) {
error(e);
}
}
public void commandAction(Command cmd, Displayable disp) {
// if exit
if(cmd == exitCommand) {
destroyApp(true);
notifyDestroyed();
} else if(cmd == backCommand) { // if the user clicks back
// close the player instance
try {
if(player != null) player.close();
} catch(Exception e) {
error(e);
}
// display the list
display.setCurrent(list);
// and return
return;
}
// implicit list handling
try {
// first load the Player instance
loadPlayer();
if(list.getSelectedIndex() == 0) { // form video
// extract the GUIControl
GUIControl guiControl = (GUIControl)player.getControl("javax.microedition.media.control.GUIControl");
// if not found, throw error
if(guiControl == null) throw new Exception("No GUIControl!!");
// add as a video item by initializing it to use GUI Primitive
Item videoItem =(Item)guiControl.initDisplayMode(GUIControl.USE_GUI_PRIMITIVE,null);
// insert at first place
form.append(videoItem);
// show the form
display.setCurrent(form);
// finally start the player instance
player.start();
} else
{ // canvas video
// grab the videocontrol
VideoControl videoControl = (VideoControl)player.getControl("javax.microedition.media.control.VideoControl");
// if not found throw error
if(videoControl == null) throw new Exception("No VideoControl!!");
// initialize to use direct video and show on canvas
videoControl.initDisplayMode(VideoControl.USE_DIRECT_VIDEO, canvas);
// make sure it is displayed full screen
// not all devices support this, if your device is having trouble
// showing the video, comment this line
videoControl.setDisplayFullScreen(true);
// must make the control visible
videoControl.setVisible(true);
// now show the canvas
display.setCurrent(canvas);
// and start the player
player.start();
}
} catch(Exception e) {
error(e);
}
}
private void loadPlayer() throws Exception
{
// loads the Player on this MP4 file.
// IMPORTANT: Change content type here for C975 to video/mp4
// and M75 to video/mpeg4 or use Netbeans device fragmentation
// feature
player = Manager.createPlayer("http://java.sun.com/products/java-media/mma/media/test-mpeg.mpg");
player.realize();
}
// general purpose error method, displays onscreen as well to output
private void error(Exception e) {
alert.setString(e.getMessage());
alert.setTimeout(Alert.FOREVER);
display.setCurrent(alert);
e.printStackTrace();
error = true;
}
}
// VideoCanvas that is the container for the video
class VideoCanvas extends Canvas {
public void paint(Graphics g) {
// does nothing..
}
}
Alguém já passou por esse problema ou sabe oque é ?
Até mais!
