how to create class alert using lcdui package in blackberry
- by Baby
Advance Thanks.i am new to blackberry developement.i try the following code for creating alert using lcdui package.but nothing will coming when i am running
Plz help me.
package alertpack;
import javax.microedition.lcdui.Alert;
import javax.microedition.lcdui.AlertType;
import javax.microedition.lcdui.Command;
import javax.microedition.lcdui.CommandListener;
import javax.microedition.lcdui.Display;
import javax.microedition.lcdui.Displayable;
import javax.microedition.lcdui.Form;
import javax.microedition.lcdui.Screen;
import javax.microedition.midlet.MIDlet;
import javax.microedition.midlet.MIDletStateChangeException;
import net.rim.device.api.ui.Color;
import net.rim.device.api.ui.Graphics;
public class alertclass extends MIDlet implements CommandListener {
private Display display;
private Alert alert;
private Form form = new Form("Throw Exception");
private Command exit = new Command("Exit", Command.SCREEN, 1);
//public static void main(String[] args)
//{
//}
private boolean exitFlag = false;
public alertclass(){
display = Display.getDisplay(this);
form.addCommand(exit);
form.setCommandListener(this);
}
protected void destroyApp(boolean unconditional)
throws MIDletStateChangeException {
// TODO Auto-generated method stub
if (unconditional == false) {
throw new MIDletStateChangeException();
}
}
protected void pauseApp() {
// TODO Auto-generated method stub
}
protected void startApp() throws MIDletStateChangeException {
// TODO Auto-generated method stub
display.setCurrent(form);
}
public void commandAction(Command c, Displayable d) {
// TODO Auto-generated method stub
if (c == exit) {
try {
if (exitFlag == false) {
alert = new Alert("Busy", "Please try again.", null, AlertType.WARNING);
alert.setTimeout(Alert.FOREVER);
display.setCurrent(alert, form);
destroyApp(false);
} else {
destroyApp(true);
notifyDestroyed();
}
} catch (Exception exception) {
exitFlag = true;
}
}
}
}
