import java.io.IOException;
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.Image;
import javax.microedition.lcdui.List;
import javax.microedition.lcdui.TextBox;
import javax.microedition.lcdui.TextField;
import javax.microedition.midlet.MIDlet;
public class ListMIDlet extends MIDlet implements CommandListener {
TextBox main;
private Command exitCommand;
private Command exclusiveCommand;
private Command multipleCommand;
private Command implicitCommand;
private Command confirmCommand;
private List aEXCLUSIVEList;
private List aMULTIPLEList;
private List aIMPLICITList;
String[] position = { "1", "2", "3" };
String[] hobby = { "A", "B", "C", "D", "E" };
Image[] positionIcon = { createImage("/1.png"), createImage("/2.png"), createImage("/3.png") };
Image[] hobbyIcon = { createImage("/A.png"), createImage("/B.png"), createImage("/C.png"),
createImage("/D.png"), createImage("/E.png") };
private Display display;
private String currentScreen = "";
public ListMIDlet() {
display = Display.getDisplay(this);
exitCommand = new Command("exit", Command.SCREEN, 1);
exclusiveCommand = new Command("exclusive", Command.SCREEN, 1);
multipleCommand = new Command("multiple", Command.SCREEN, 1);
implicitCommand = new Command("implicit", Command.SCREEN, 1);
confirmCommand = new Command("confirm", Command.SCREEN, 2);
}
public void startApp() {
main = new TextBox("main", null, 256, TextField.ANY);
main.addCommand(exitCommand);
main.addCommand(exclusiveCommand);
main.addCommand(multipleCommand);
main.addCommand(implicitCommand);
main.setCommandListener(this);
display.setCurrent(main);
currentScreen = "Main";
}
public void pauseApp() {
}
public void destroyApp(boolean unconditional) {
}
private Image createImage(String name) {
Image aImage = null;
try {
aImage = Image.createImage(name);
} catch (IOException e) {
}
return aImage;
}
private void exclusiveList() {
aEXCLUSIVEList = new List("exclusive", List.EXCLUSIVE, position, positionIcon);
aEXCLUSIVEList.addCommand(exitCommand);
aEXCLUSIVEList.addCommand(confirmCommand);
aEXCLUSIVEList.setCommandListener(this);
display.setCurrent(aEXCLUSIVEList);
currentScreen = "exclusive";
}
private void multipleList() {
aMULTIPLEList = new List("multiple", List.MULTIPLE, hobby, hobbyIcon);
aMULTIPLEList.addCommand(exitCommand);
aMULTIPLEList.addCommand(confirmCommand);
aMULTIPLEList.setCommandListener(this);
display.setCurrent(aMULTIPLEList);
currentScreen = "multiple";
}
private void implicitList() {
aIMPLICITList = new List("implicit", List.IMPLICIT);
aIMPLICITList.append("A", createImage("/A.png"));
aIMPLICITList.append("B", createImage("/B.png"));
aIMPLICITList.append("C", createImage("/C.png"));
aIMPLICITList.append("D", createImage("/D.png"));
aIMPLICITList.append("E", createImage("/E.png"));
aIMPLICITList.addCommand(exitCommand);
aIMPLICITList.setCommandListener(this);
display.setCurrent(aIMPLICITList);
currentScreen = "implicit";
}
public void commandAction(Command c, Displayable s) {
if (c == exitCommand) {
if (currentScreen == "implicit") {
destroyApp(false);
notifyDestroyed();
} else {
display.setCurrent(main);
currentScreen = "no";
}
}
if (c == exclusiveCommand) {
exclusiveList();
}
if (c == multipleCommand) {
multipleList();
}
if (c == implicitCommand) {
implicitList();
}
if (c == confirmCommand) {
Alert aAlert;
if (currentScreen == "implicit") {
int aIndex = aEXCLUSIVEList.getSelectedIndex();
aAlert = new Alert("Result", position[aIndex], null, AlertType.INFO);
display.setCurrent(aAlert);
}
if (currentScreen == "multiple") {
String result = "result\n";
for (int i = 0; i < aMULTIPLEList.size(); i++)
if (aMULTIPLEList.isSelected(i))
result += hobby[i] + ", ";
aAlert = new Alert("alert", result, null, AlertType.INFO);
aAlert.setTimeout(5000);
display.setCurrent(aAlert);
}
}
if (c == List.SELECT_COMMAND) {
int aIndex = aIMPLICITList.getSelectedIndex();
String menuItem = aIMPLICITList.getString(aIndex);
Alert aAlert = new Alert("imple", menuItem, null, AlertType.INFO);
aAlert.setTimeout(5000);
display.setCurrent(aAlert);
}
}
}