我正在尝试使用Calendar API来阅读我的Google日历活动及其开始/结束日期/时间 . 代码似乎工作正常，但有一个我无法理解的问题 . nameOfEvent arraylist和startDates / endDates具有完全不同的大小！名称是771项长，开始/结束只有680.如何有没有开始/结束日期的日历项（事件名称）？ Log.d崩溃是因为它说startDates超出范围 . 当我调试并查看arraylist大小完全关闭！

这是我的代码：

public static ArrayList<String> nameOfEvent = new ArrayList<String>();
public static ArrayList<String> startDates = new ArrayList<String>();
public static ArrayList<String> endDates = new ArrayList<String>();
public static ArrayList<String> descriptions = new ArrayList<String>();

public static ArrayList<String> readCalendarEvent(Context context) {
    Cursor cursor = context.getContentResolver()
            .query(
                    Uri.parse("content://com.android.calendar/events"),
                    new String[]{"calendar_id", "title", "description",
                            "dtstart", "dtend", "eventLocation"}, null,
                    null, null);
    cursor.moveToFirst();
    // fetching calendars name
    String CNames[] = new String[cursor.getCount()];

    // fetching calendars id
    nameOfEvent.clear();
    startDates.clear();
    endDates.clear();
    descriptions.clear();
    for (int i = 0; i < CNames.length; i++) {
        try {
            nameOfEvent.add(cursor.getString(1));
            startDates.add(getDate(Long.parseLong(cursor.getString(3))));
            endDates.add(getDate(Long.parseLong(cursor.getString(4))));
            descriptions.add(cursor.getString(2));
            CNames[i] = cursor.getString(1);
        } catch (NumberFormatException e) {

        }
        cursor.moveToNext();

    }

    int item=0;
    cursor.moveToFirst();
    while (cursor.moveToNext()) {
        // Read the calendar item, and start/finish time and print
        Log.d ("CALENDAR", "Name = " + nameOfEvent.get(item) + " Start Date = " + startDates.get(item) + " End date = " + endDates.get(item));
        item++;

    }

    return nameOfEvent;
}

public static String getDate(long milliSeconds) {
    SimpleDateFormat formatter = new SimpleDateFormat(
            "dd/MM/yyyy hh:mm:ss a");
    Calendar calendar = Calendar.getInstance();
    calendar.setTimeInMillis(milliSeconds);
    return formatter.format(calendar.getTime());
}

有人可以帮我理解这里的问题是什么，我做错了什么？谢谢

java android calendar