我正在创建一个应用程序，用于创建特定日历并管理其中的事件。
目前，出于测试目的，我想展示我在提供程序中的每个事件，并且我正在使用此代码执行此操作：
Cursor cursor = getContentResolver().query(
CalendarContract.Events.CONTENT_URI,
new String[]{CalendarContract.Events.TITLE, CalendarContract.Events.DTSTART},
null, null,
CalendarContract.Events.DTSTART
);
在这里，我得到了一个意想不到的行为：我在这里发生的最早的事件发生在2015年8月16日，即使我的谷歌议程向我展示了2014年的事件。 唯一的例外是去年发生的重复事件（其中8起与总共632起）
为什么contentProvider会像这样在1年内修剪我的日历？如何防止这种情况或更好地同步这个特定的日历？
这种行为是否记录在某处？
答案 0 :(得分：0)
请使用我的代码获取所有活动
谷歌日历应用程序与Android手机集成。首先你设置这行将从另一个类形式读取日历事件，你的类是当前的ApplicationController.java。
calendar.readCalendar(ApplicationSettings.this);
import android.content.ContentResolver;
import android.content.ContentUris;
import android.content.Context;
import android.database.Cursor;
import android.net.Uri;
import android.text.format.DateUtils;
public class ReadCalendar
{
static Cursor cursor;
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
cursor = contentResolver.query(Uri.parse("content://com.android.calendar/calendars"),
(new String[] { "_id", "displayName", "selected"}), null, null, null);
HashSet<String> calendarIds = new HashSet<String>();
try
{
System.out.println("Count="+cursor.getCount());
if(cursor.getCount() > 0)
{
System.out.println("the control is just inside of the cursor.count loop");
while (cursor.moveToNext()) {
String _id = cursor.getString(0);
String displayName = cursor.getString(1);
Boolean selected = !cursor.getString(2).equals("0");
System.out.println("Id: " + _id + " Display Name: " + displayName + " Selected: " + selected);
calendarIds.add(_id);
}
}
}
catch(AssertionError ex)
{
ex.printStackTrace();
}
catch(Exception e)
{
e.printStackTrace();
}
// 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://com.android.calendar/instances/when").buildUpon();
//Uri.Builder builder = Uri.parse("content://com.android.calendar/calendars").buildUpon();
long now = new Date().getTime();
ContentUris.appendId(builder, now - DateUtils.DAY_IN_MILLIS * 10000);
ContentUris.appendId(builder, now + DateUtils.DAY_IN_MILLIS * 10000);
Cursor eventCursor = contentResolver.query(builder.build(),
new String[] { "title", "begin", "end", "allDay"}, "Calendars._id=" + 1,
null, "startDay ASC, startMinute ASC");
System.out.println("eventCursor count="+eventCursor.getCount());
if(eventCursor.getCount()>0)
{
if(eventCursor.moveToFirst())
{
do
{
Object mbeg_date,beg_date,beg_time,end_date,end_time;
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");
/* System.out.println("Title: " + title + " Begin: " + begin + " End: " + end +
" All Day: " + allDay);
*/
System.out.println("Title:"+title);
System.out.println("Begin:"+begin);
System.out.println("End:"+end);
System.out.println("All Day:"+allDay);
/* the calendar control metting-begin events Respose sub-string (starts....hare) */
Pattern p = Pattern.compile(" ");
String[] items = p.split(begin.toString());
String scalendar_metting_beginday,scalendar_metting_beginmonth,scalendar_metting_beginyear,scalendar_metting_begindate,scalendar_metting_begintime,scalendar_metting_begingmt;
scalendar_metting_beginday = items[0];
scalendar_metting_beginmonth = items[1];
scalendar_metting_begindate = items[2];
scalendar_metting_begintime = items[3];
scalendar_metting_begingmt = items[4];
scalendar_metting_beginyear = items[5];
String calendar_metting_beginday = scalendar_metting_beginday;
String calendar_metting_beginmonth = scalendar_metting_beginmonth.toString().trim();
int calendar_metting_begindate = Integer.parseInt(scalendar_metting_begindate.trim());
String calendar_metting_begintime = scalendar_metting_begintime.toString().trim();
String calendar_metting_begingmt = scalendar_metting_begingmt;
int calendar_metting_beginyear = Integer.parseInt(scalendar_metting_beginyear.trim());
System.out.println("calendar_metting_beginday="+calendar_metting_beginday);
System.out.println("calendar_metting_beginmonth ="+calendar_metting_beginmonth);
System.out.println("calendar_metting_begindate ="+calendar_metting_begindate);
System.out.println("calendar_metting_begintime="+calendar_metting_begintime);
System.out.println("calendar_metting_begingmt ="+calendar_metting_begingmt);
System.out.println("calendar_metting_beginyear ="+calendar_metting_beginyear);
/* the calendar control metting-begin events Respose sub-string (starts....ends) */
/* the calendar control metting-end events Respose sub-string (starts....hare) */
Pattern p1 = Pattern.compile(" ");
String[] enditems = p.split(end.toString());
String scalendar_metting_endday,scalendar_metting_endmonth,scalendar_metting_endyear,scalendar_metting_enddate,scalendar_metting_endtime,scalendar_metting_endgmt;
scalendar_metting_endday = enditems[0];
scalendar_metting_endmonth = enditems[1];
scalendar_metting_enddate = enditems[2];
scalendar_metting_endtime = enditems[3];
scalendar_metting_endgmt = enditems[4];
scalendar_metting_endyear = enditems[5];
String calendar_metting_endday = scalendar_metting_endday;
String calendar_metting_endmonth = scalendar_metting_endmonth.toString().trim();
int calendar_metting_enddate = Integer.parseInt(scalendar_metting_enddate.trim());
String calendar_metting_endtime = scalendar_metting_endtime.toString().trim();
String calendar_metting_endgmt = scalendar_metting_endgmt;
int calendar_metting_endyear = Integer.parseInt(scalendar_metting_endyear.trim());
System.out.println("calendar_metting_beginday="+calendar_metting_endday);
System.out.println("calendar_metting_beginmonth ="+calendar_metting_endmonth);
System.out.println("calendar_metting_begindate ="+calendar_metting_enddate);
System.out.println("calendar_metting_begintime="+calendar_metting_endtime);
System.out.println("calendar_metting_begingmt ="+calendar_metting_endgmt);
System.out.println("calendar_metting_beginyear ="+calendar_metting_endyear);
/* the calendar control metting-end events Respose sub-string (starts....ends) */
System.out.println("only date begin of events="+begin.getDate());
System.out.println("only begin time of events="+begin.getHours() + ":" +begin.getMinutes() + ":" +begin.getSeconds());
System.out.println("only date begin of events="+end.getDate());
System.out.println("only begin time of events="+end.getHours() + ":" +end.getMinutes() + ":" +end.getSeconds());
beg_date = begin.getDate();
mbeg_date = begin.getDate()+"/"+calendar_metting_beginmonth+"/"+calendar_metting_beginyear;
beg_time = begin.getHours();
System.out.println("the vaule of mbeg_date="+mbeg_date.toString().trim());
end_date = end.getDate();
end_time = end.getHours();
CallHandlerUI.metting_begin_date.add(beg_date.toString());
CallHandlerUI.metting_begin_mdate.add(mbeg_date.toString());
CallHandlerUI.metting_begin_mtime.add(calendar_metting_begintime.toString());
CallHandlerUI.metting_end_date.add(end_date.toString());
CallHandlerUI.metting_end_time.add(end_time.toString());
CallHandlerUI.metting_end_mtime.add(calendar_metting_endtime.toString());
}
while(eventCursor.moveToNext());
}
}
break;
}
}
}
每个活动都会在您的日历中使用该回传网址为2.2及以上版本：
Uri.parse("content://com.android.calendar/instances/when").buildUpon();
在android中查找低于2.2的那些版本，并根据需要使用这些事件......