Java me J2ME PIM事件

我目前正在开发一个J2ME应用程序事件管理器。我正在使用PIM，但我没有足够的知识。有人可以帮助我或给我参考如何设置在显示，编辑和删除记录

这是我到目前为止所做的

        import javax.microedition.midlet.MIDlet;
        import javax.microedition.lcdui.Displayable;
        import javax.microedition.lcdui.Display;
        import javax.microedition.lcdui.Form;
        import javax.microedition.lcdui.CommandListener;
        import javax.microedition.lcdui.TextField;
        import javax.microedition.lcdui.DateField;
        import javax.microedition.lcdui.Command;
        import javax.microedition.lcdui.Alert;

        import javax.microedition.pim.PIM;
        import javax.microedition.pim.PIMItem;
        import javax.microedition.pim.EventList;
        import javax.microedition.pim.Event;
        import javax.microedition.pim.PIMException;

        import java.util.Date;


        public class AddCalendarEvent extends MIDlet implements CommandListener {

            private Display display;
            private Form addEventForm;
            private Command cmdAddEvent;
            private Command cmdExit;
            private TextField summaryField;
            private DateField startDateField;
            private DateField endDateField;
            private TextField noteField;
            private TextField locationField;

            public AddCalendarEvent() {
                if(checkPIMSupport() == false) {
                    exitMIDlet();
                }

                initializeComponents();
            }

            public void initializeComponents() {
                display = Display.getDisplay(this);
                addEventForm = new Form("Add event");
                cmdAddEvent = new Command("Add event", Command.SCREEN, 0);
                addEventForm.addCommand(cmdAddEvent);

                cmdExit = new Command("Exit", Command.EXIT, 0);
                addEventForm.addCommand(cmdExit);

                addEventForm.setCommandListener(this);        

                try {
                    EventList eventList = (EventList)PIM.getInstance().openPIMList(
                            PIM.EVENT_LIST, PIM.READ_WRITE);
                    if(eventList.isSupportedField(Event.SUMMARY) == true) {
                        summaryField = new TextField("Summary", null, 20, 
                                                    TextField.ANY);
                        addEventForm.append(summaryField);
                    } else {
                        eventList.close();
                        throw new Exception("Summary field is not supported");
                    }

                    if(eventList.isSupportedField(Event.START) == true) {
                        startDateField = new DateField("Start date", 
                                                    DateField.DATE_TIME);
                        startDateField.setDate(new Date());
                        addEventForm.append(startDateField);
                    }

                    if(eventList.isSupportedField(Event.END) == true) {
                        endDateField = new DateField("End date", DateField.DATE_TIME);
                        endDateField.setDate(new Date());
                        addEventForm.append(endDateField);
                    }

                    if(eventList.isSupportedField(Event.NOTE) == true) {
                        noteField = new TextField("Note", null, 20, TextField.ANY);
                        addEventForm.append(noteField);
                    }

                    if(eventList.isSupportedField(Event.LOCATION) == true) {
                        locationField = new TextField("Location", null, 20, 
                                                    TextField.ANY);
                        addEventForm.append(locationField);
                    }            

                    eventList.close();

                } catch(PIMException pimExc) {
                }
                catch(SecurityException secExc) {

                }
                catch(Exception exc) {

                    exitMIDlet();
                }
            }

            private boolean checkPIMSupport() {
                String propValue = System.getProperty("microedition.pim.version");
                if(propValue != null) {
                    return true;
                } else {
                    return false;
                }
            }

            private void addEvent() {
                try {
                    EventList eventList = (EventList)PIM.getInstance().openPIMList(
                            PIM.EVENT_LIST, PIM.READ_WRITE);            

                    Event event = eventList.createEvent();

                    if(eventList.isSupportedField(Event.SUMMARY) == true) {
                        String summary = summaryField.getString();
                        event.addString(Event.SUMMARY, PIMItem.ATTR_NONE, summary);
                    } else {
                        eventList.close();
                        throw new Exception("Summary field for event is not supported");
                    }

                    if(eventList.isSupportedField(Event.START) == true) {
                        long startDate = startDateField.getDate().getTime();
                        event.addDate(Event.START, PIMItem.ATTR_NONE, startDate);
                    }

                    if(eventList.isSupportedField(Event.END) == true) {
                        long endDate = endDateField.getDate().getTime();
                        event.addDate(Event.END, PIMItem.ATTR_NONE, endDate);
                    }

                    if(eventList.isSupportedField(Event.NOTE) == true) {
                        String note = noteField.getString();
                        event.addString(Event.NOTE, PIMItem.ATTR_NONE, note);
                    }

                    if(eventList.isSupportedField(Event.LOCATION) == true) {
                        String location = locationField.getString();
                        event.addString(Event.LOCATION, PIMItem.ATTR_NONE, location);
                    }      

                    event.commit();
                    eventList.close();

                    showAlert("Info", "Event was successfully added.");

                } catch(PIMException pimExc) {
                    showAlert("PIMException", pimExc.getMessage());
                }
                catch(SecurityException secExc) {
                    showAlert("SecurityException", secExc.getMessage());
                }
                catch(Exception exc) {
                    showAlert("Exception", exc.getMessage());
                }   
            }

            private void showAlert(String title, String message) {
                Alert alert = new Alert(title);
                alert.setString(message);
                alert.setTimeout(Alert.FOREVER);
                display.setCurrent(alert);
            }

            public void startApp() {
                display.setCurrent(addEventForm);
            }

            public void pauseApp() {
            }
            public void destroyApp(boolean unconditional) {
            }

            private void exitMIDlet() {
                notifyDestroyed();
            }

            public void commandAction(Command command, Displayable displayable) {
                if(command == cmdAddEvent) {
                    addEvent();
                }

                if(command == cmdExit) {
                    exitMIDlet();
                }
            }
        }

---

学习中建议的规范和教程

这一条看起来最符合您的问题：

…本文提供了PIM API的代码密集型入门教程；它：

• 介绍JSR75
• 描述

  javax.microedition.pim

  可选包
• 提供有关PIM API的详细信息
• 让您体验使用它们所付出的努力
• 提供代码，您可以根据自己的无线应用程序的需要进行调整

---

上述教程还列出了一些建议进一步学习的资源，请参见第节了解更多信息

学习中建议的规范和教程

这一条看起来最符合您的问题：

…本文提供了PIM API的代码密集型入门教程；它：

• 介绍JSR75
• 描述

  javax.microedition.pim

  可选包
• 提供有关PIM API的详细信息
• 让您体验使用它们所付出的努力
• 提供代码，您可以根据自己的无线应用程序的需要进行调整

---

以上教程还列出了一些建议进一步学习的资源，请参见第节了解更多信息

您到底有什么问题？我在pim中显示、编辑和删除数据时遇到问题。没有任何参考资料。在-中提供了对规范和教程的参考，如“PIM API入门”。你查过了吗？我还没查过。非常感谢@gnat先生。-1恐怕这真是个糟糕的问题。你到底有什么问题？我在pim中显示、编辑和删除数据时遇到问题。没有任何参考资料。在-中提供了对规范和教程的参考，如“PIM API入门”。你查过了吗？我还没查过。非常感谢，先生@gnat.-1恐怕这真是个糟糕的问题。