本文介绍了如何获得在Android设备设备的日历事件列表？的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我想获得的日历事件最后7天在Android设备上？我是初学者所以告诉我一步一步的解决方案这个..！只有获得和读取日历不会更新和删除。任何人可以帮助我吗？我用code以下！
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!
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);
}
}
}
}
我得到空pointerException。
i got null-pointerException.
推荐答案
我的问题解决，我用下面的 code -
My problem solved and i use below 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());
}
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