[英]How to retrieve lastly added events in android calendar
根据我的要求,我应该将事件保存在android日历中,例如事件名称,starDate和endDate等,并检索最近保存的事件,现在一切顺利,而不是获取我得到的第一个事件的最后一个事件值,任何人都可以告诉逻辑请问这个问题。
这是我的代码
private void addEvent2() {
Intent l_intent = new Intent(Intent.ACTION_EDIT);
l_intent.setType("vnd.android.cursor.item/event");
//l_intent.putExtra("calendar_id", m_selectedCalendarId); //this doesn't work
l_intent.putExtra("title", "roman10 calendar tutorial test");
l_intent.putExtra("description", "This is a simple test for calendar api");
l_intent.putExtra("eventLocation", "@home");
l_intent.putExtra("beginTime", System.currentTimeMillis());
l_intent.putExtra("endTime", System.currentTimeMillis() + 1800*1000);
l_intent.putExtra("allDay", 0);
//status: 0~ tentative; 1~ confirmed; 2~ canceled
l_intent.putExtra("eventStatus", 1);
//0~ default; 1~ confidential; 2~ private; 3~ public
l_intent.putExtra("visibility", 3);
//0~ opaque, no timing conflict is allowed; 1~ transparency, allow overlap of scheduling
l_intent.putExtra("transparency", 0);
//0~ false; 1~ true
l_intent.putExtra("hasAlarm", 1);
try {
startActivity(l_intent);
} catch (Exception e) {
Toast.makeText(this.getApplicationContext(), "Sorry, no compatible calendar is found!", Toast.LENGTH_LONG).show();
}
}
检索代码
private void getLastEvent() {
Uri l_eventUri;
if (Build.VERSION.SDK_INT >= 8) {
l_eventUri = Uri.parse("content://com.android.calendar/events");
} else {
l_eventUri = Uri.parse("content://calendar/events");
}
String[] l_projection = new String[]{"title", "dtstart", "dtend"};
Cursor l_managedCursor = this.managedQuery(l_eventUri, l_projection, "calendar_id=" + m_selectedCalendarId, null, "dtstart DESC, dtend DESC");
//Cursor l_managedCursor = this.managedQuery(l_eventUri, l_projection, null, null, null);
if (l_managedCursor.moveToFirst()) {
int l_cnt = 0;
String l_title;
String l_begin;
String l_end;
StringBuilder l_displayText = new StringBuilder();
int l_colTitle = l_managedCursor.getColumnIndex(l_projection[0]);
int l_colBegin = l_managedCursor.getColumnIndex(l_projection[1]);
int l_colEnd = l_managedCursor.getColumnIndex(l_projection[1]);
do {
l_title = l_managedCursor.getString(l_colTitle);
l_begin = getDateTimeStr(l_managedCursor.getString(l_colBegin));
l_end = getDateTimeStr(l_managedCursor.getString(l_colEnd));
l_displayText.append(l_title + "\n" + l_begin + "\n" + l_end + "\n----------------\n");
++l_cnt;
} while (l_managedCursor.moveToNext() && l_cnt < 1);
m_text_event.setText(l_displayText.toString());
}
l_managedCursor.close();
}
检索最近保存的事件
只要您不保存添加事件的日期,就无法获取上次添加的事件。
在Calendar.Contract.Events API中查找我找不到任何字段来插入这种额外的数据,因此您有2个sol.lutions:
创建SharedPreferences
或DataBase
存储基本数据,以寻找PLUS日历事件添加日期,然后在这首或数据库搜索和检索根据从日历信息。
更轻松,但不推荐
在一些String
字段中添加例如DESCRIPTION
或ORGANIZER
的事件的Timestamp
或Date
,然后在搜索时仅获取事件的这一部分并进行排序以获取最后添加的内容。
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