如何获取Android设备中的设备日历事件列表?

我想在Android设备上获得最后一个日历事件? 我是初学者,所以告诉我这个一步一步的解决scheme..!只有读取日历不更新和删除。 有人帮我? 我用下面的代码!

public class Example { public static void readCalendar(Context context) { ContentResolver contentResolver = context.getContentResolver(); // Fetch a list of all calendars synced with the device, their display names and whether the // user has them selected for display. final Cursor cursor = contentResolver.query(Uri.parse("content://calendar/calendars"), (new String[] { "_id", "displayName", "selected" }), null, null, null); // For a full list of available columns see http://tinyurl.com/yfbg76w HashSet<String> calendarIds = new HashSet<String>(); while (cursor.moveToNext()) { final String _id = cursor.getString(0); final String displayName = cursor.getString(1); final Boolean selected = !cursor.getString(2).equals("0"); Log.v("anim","Id: " + _id + " Display Name: " + displayName + " Selected: " + selected); calendarIds.add(_id); } // For each calendar, display all the events from the previous week to the end of next week. for (String id : calendarIds) { Uri.Builder builder = Uri.parse("content://calendar/instances/when").buildUpon(); long now = new Date().getTime(); ContentUris.appendId(builder, now - DateUtils.WEEK_IN_MILLIS); ContentUris.appendId(builder, now + DateUtils.WEEK_IN_MILLIS); Cursor eventCursor = contentResolver.query(builder.build(), new String[] { "title", "begin", "end", "allDay"}, "Calendars._id=" + id, null, "startDay ASC, startMinute ASC"); // For a full list of available columns see http://tinyurl.com/yfbg76w while (eventCursor.moveToNext()) { final String title = eventCursor.getString(0); final Date begin = new Date(eventCursor.getLong(1)); final Date end = new Date(eventCursor.getLong(2)); final Boolean allDay = !eventCursor.getString(3).equals("0"); Log.v("anim","Title: " + title + " Begin: " + begin + " End: " + end + " All Day: " + allDay); } } } } 

我得到了null-pointerException。

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我的问题解决了,我使用下面的code

 public class Utility { 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++) { 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); cursor.moveToNext(); } 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()); } 

万分感谢! 但是,您仅从一个日历中获取了所有事件,例如您的主Google帐户,如何从所有可用的日历中获取事件?

请注意,在内置的日历小工具中,您可以看到来自Gmail,Exchange,Facebook等的事件“如何获取这些事件?

至于date或星期的特定事件,我通过使用查询语句中的selection子句和selectArgs在特定的日子中这样做:

这些是select和参数定义:

 Uri content = Uri.parse("content://com.android.calendar/events"); String[] vec = new String[] { "calendar_id", "title", "description", "dtstart", "dtend", "allDay", "eventLocation" }; String selectionClause = "(dtstart >= ? AND dtend <= ?) OR (dtstart >= ? AND allDay = ?)"; String[] selectionsArgs = new String[]{"" + dtstart, "" + dtend, "" + dtstart, "1"}; 

而这个查询看起来如何:

  ContentResolver contentResolver = context.getContentResolver(); Cursor cursor = contentResolver.query(content, vec, selectionClause, selectionsArgs, null);