如何在android设备中获取设备日历事件列表？
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how to get device calendar event list in android device?
提问by Hiteshpatel0024
I want to get calendar event last sevendays on android devices ? i am beginner so tell me step by step solution for this..!Only get and read calendar not update and delete. Anybody help me ? i used code in below!
我想在 Android 设备上获取过去 7 天的日历事件？我是初学者所以告诉我一步一步的解决方案..！只获取和阅读日历而不是更新和删除。有人帮我吗？我在下面使用了代码！
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);
}
}
}
}
i got null-pointerException.
我得到了空指针异常。
回答by Hiteshpatel0024
My problem solved and i use below code-
我的问题解决了，我在下面使用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());
}
回答by Moti Bartov
Great Thanks! However, you got all the events from only one Calendar, like your main Google Account, how can you get events from ALL available calendars ??
万分感谢！但是，您仅从一个日历中获取所有事件，例如您的主要 Google 帐户，如何从所有可用日历中获取事件？
Notice that on your built in calendar Widget, you can see events from Gmail, Exchange, Facebook etc' How to get these events as well?
请注意，在您的内置日历小部件上，您可以看到来自 Gmail、Exchange、Facebook 等的事件。如何获取这些事件？
As for particular events for date or week, I did this by using the the selection clause and selection Args in the query statement like this for particular day:
至于日期或周的特定事件，我通过在查询语句中使用选择子句和选择参数来做到这一点，如下所示：
These are the selection and args define:
这些是选择和参数定义：
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"};
And this how the query looks:
这就是查询的样子：
ContentResolver contentResolver = context.getContentResolver();
Cursor cursor = contentResolver.query(content, vec, selectionClause, selectionsArgs, null);
回答by Huy TRAN
Here's a way for you to get all the Calendar events list.
这是一种获取所有日历事件列表的方法。
public static void readCalendarEvent(Context context) {
ContentResolver contentResolver = context.getContentResolver();
cursor = contentResolver.query(Uri.parse("content://com.android.calendar/events"), (new String[] { "_id", "title", "organizer", "dtstart", "dtend"}), null, null, null);
List<GoogleCalendar> gCalendar = new ArrayList<GoogleCalendar>();
try {
if (cursor.getCount() > 0) {
while (cursor.moveToNext()) {
GoogleCalendar googleCalendar = new GoogleCalendar();
// event_ID: ID of tabel Event
int event_ID = cursor.getInt(0);
googleCalendar.setEvent_id(event_ID);
// title of Event
String title = cursor.getString(1);
googleCalendar.setTitle(title);
String mOrganizer = cursor.getString(2);
googleCalendar.setOrganizer(mOrganizer);
// Date start of Event
String dtStart = cursor.getString(3);
googleCalendar.setDtstart(dtStart);
// Date end of Event
String dtEnd = cursor.getString(4);
googleCalendar.setDtend(dtEnd);
gCalendar.add(googleCalendar);
Log.d("CaledarM",googleCalendar.getTitle()+" name = "+googleCalendar.getOrganizer()+" dateStart = "+googleCalendar.getDtstart()+" Size = " + gCalendar.size());
}
}
} catch (AssertionError ex) {
ex.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
}
}
// class GoogleCalendar()
public class GoogleCalendar {
private int event_id;
private String title,
organizer,
dtstart,
dtend;
public GoogleCalendar()
{
}
public int getEvent_id() {
return event_id;
}
public void setEvent_id(int calendar_id) {
event_id = calendar_id;
}
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
public String getOrganizer() {
return organizer;
}
public void setOrganizer(String description) {
this.organizer = description;
}
public String getDtstart() {
return dtstart;
}
public void setDtstart(String dtstart1) {
this.dtstart = dtstart1;
}
public String getDtend() {
return dtend;
}
public void setDtend(String dtend1) {
this.dtend = dtend1;
}
}
