如何在Android设备中获取设备日历事件列表（）

少年意气强不羁，虎胁插翼白日飞。这篇文章主要讲述如何在Android设备中获取设备日历事件列表？相关的知识，希望能为你提供帮助。
我想在android设备上获得最后一天的日历活动吗？我是初学者所以告诉我一步一步的解决方案..！只有获取和阅读日历不更新和删除。有人帮帮我吗？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/yfbg76wHashSet< 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/yfbg76wwhile (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。
答案我的问题解决了，我在code-下面使用

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()); }

另一答案十分感谢！但是，您只从一个日历中获得所有活动，例如您的主要Google帐户，如何从所有可用日历中获取活动？
请注意，在内置日历窗口小部件中，您可以查看来自Gmail，Exchange，Facebook等的事件“如何获取这些事件？
【如何在Android设备中获取设备日历事件列表（）】对于日期或星期的特定事件，我通过使用选择子句并在特定日期对查询语句中选择Args这样做：
这些是选择和args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"};

以及查询的外观：

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