Shared Ticker
/*-------------------------------------------------- * SharedTicker.java * * Example from the book: Core J2ME Technology * Copyright John W. Muchow http://www.CoreJ2ME.com * You may use/modify for any non-commercial purpose *-------------------------------------------------*/ import javax.microedition.midlet.*; import javax.microedition.lcdui.*; public class SharedTicker extends MIDlet implements CommandListener { private Display display; // Reference to Display object private List lsProducts; // Main productlist private Alert alHelp; // Alert to show text and image private Ticker tkSale; // Ticker of what's on sale private Command cmExit; // Command to exit the MIDlet public SharedTicker() { display = Display.getDisplay(this); cmExit = new Command("Exit", Command.SCREEN, 1); tkSale = new Ticker("Current Sale: Torchiere Lamp only $29.00"); lsProducts = new List("Products", Choice.IMPLICIT); lsProducts.append("Floor Lamp", null); lsProducts.append("Chandelier", null); lsProducts.append("Help", null); lsProducts.addCommand(cmExit); lsProducts.setCommandListener(this); lsProducts.setTicker(tkSale); } public void startApp() { display.setCurrent(lsProducts); } public void pauseApp() { } public void destroyApp(boolean unconditional) { } public void showAlert() { try { // Create an image Image im = Image.createImage("/help.png"); // Create Alert, add text and image, no sound alHelp = new Alert("Help Information", "Over 300 unique lighting products!", im, null); alHelp.setTimeout(Alert.FOREVER); alHelp.setTicker(tkSale); } catch(Exception e) { System.out.println("Unable to read png image."); } // Display the Alert. Once dismissed, return to product list display.setCurrent(alHelp, lsProducts); } public void commandAction(Command c, Displayable s) { if (c == List.SELECT_COMMAND) { switch (lsProducts.getSelectedIndex()) { case 0: System.out.println("Floor Lamp selected"); break; case 1: System.out.println("Chandelier selected"); break; case 2: showAlert(); break; } } else if (c == cmExit) { destroyApp(true); notifyDestroyed(); } } }
1. | Quotes MIDlet | ||
2. | TickerList | ||
3. | Stock Watcher |