listtypeselectionscreen.java

一个J2ME编写的Pim卡电话本的读写Demo软件

package example.pim;

import javax.microedition.lcdui.Command;
import javax.microedition.lcdui.CommandListener;
import javax.microedition.lcdui.Display;
import javax.microedition.lcdui.Displayable;
import javax.microedition.lcdui.List;
import javax.microedition.midlet.MIDlet;
import javax.microedition.pim.PIM;


/**
 * Demonstrate the use of JSR 75 PIM APIs
 */
public class ListTypeSelectionScreen extends List implements CommandListener {
    private static final String CONTACT_TYPE = "Contact Lists";
    private static final String EVENT_TYPE = "Event Lists";
    private static final String TODO_TYPE = "To-Do Lists";
    private final Command selectCommand = new Command("Select", Command.OK, 1);
    private final Command exitCommand = new Command("Exit", Command.EXIT, 1);
    private final PIMDemo midlet;

    public ListTypeSelectionScreen(PIMDemo midlet) {
        super("Select a list type", List.IMPLICIT);
        append(CONTACT_TYPE, null);
        append(EVENT_TYPE, null);
        append(TODO_TYPE, null);
        setSelectCommand(selectCommand);
        addCommand(exitCommand);
        setCommandListener(this);
        this.midlet = midlet;
    }

    public void commandAction(Command command, Displayable displayable) {
        if (command == exitCommand) {
            midlet.exit();
        } else if (command == selectCommand) {
            final int listType = getSelectedIndex() + PIM.CONTACT_LIST;
            new Thread(new Runnable() {
                    public void run() {
                        try {
                            Displayable screen =
                                new ListSelectionScreen(midlet, ListTypeSelectionScreen.this,
                                    listType);
                            Display.getDisplay(midlet).setCurrent(screen);
                        } catch (Exception e) {
                            midlet.reportException(e, ListTypeSelectionScreen.this);
                        }
                    }
                }).start();
        }
    }
}