易企秀网站怎么做轮播图,百度广告标识,河北省建设招标网站,鹤壁市城乡一体化示范区官网入口Android日历提醒是非常好的提醒功能#xff0c;笔者在做的过程中#xff0c;遇到的一些问题#xff0c;现整理出来#xff0c;以供参考。 一、申请日历的读写权限
uses-permission android:nameandroid.permission.WRITE_CALENDAR /
uses-permiss…Android日历提醒是非常好的提醒功能笔者在做的过程中遇到的一些问题现整理出来以供参考。 一、申请日历的读写权限
uses-permission android:nameandroid.permission.WRITE_CALENDAR /
uses-permission android:nameandroid.permission.READ_CALENDAR /
如果需要读取日历数据需要加入READ_CALENDAR权限。若需要对日历数据进行删改操作需要WRITE_CALENDAR权限。
二、事件表
CalendarContract.Events表包含事件的信息比如标题、描述、开始时间等如需查看所支持字段的完整列表请参阅 CalendarContract.Events。
常量描述_ID事件ID非常重要更新删除数据都要用到。CALENDAR_ID事件所属日历用户ID。TITLE事件的名称。DESCRIPTION事件的描述。DTSTART事件开始时间以从公元纪年开始计算的协调世界时毫秒数表示。DTEND事件结束时间以从公元纪年开始计算的协调世界时毫秒数表示。EVENT_TIMEZONE事件的时区。EVENT_END_TIMEZONE事件结束时间的时区。DURATIONRFC5545 格式的事件持续时间。例如值为 PT1H 表示事件应持续一小时值为 P2W 表示持续 2 周。ALL_DAY值为 1 表示此事件占用一整天按照本地时区的定义。值为 0 表示它是常规事件可在一天内的任何时间开始和结束。RRULE事件的重复发生规则格式。例如FREQWEEKLY;COUNT10;WKSTSU。您可以在此处找到更多示例。RDATE事件的重复发生日期。RDATE 与 RRULE 通常联合用于定义一组存在聚合关系的重复实例。如需查看更详细的介绍请参阅 RFC5545 规范。AVAILABILITY将此事件视为忙碌时间还是可调度的空闲时间。 HAS_ALARM 设置是否有闹钟提醒0-没有1-有
三、日历用户
增加事件需要用户信息CalendarContract.Events.CALENDAR_ID相关代码如下
private static final String CALENDER_URL content://com.android.calendar/calendars;private static final String CALENDARS_NAME XX;// 随便写
private static final String CALENDARS_ACCOUNT_NAME XX;// 随便写
private static final String CALENDARS_ACCOUNT_TYPE CalendarContract.ACCOUNT_TYPE_LOCAL;
private static final String CALENDARS_DISPLAY_NAME StringUtils.getString(R.string.app_name) 账户;// 随便写/*** 检查是否已经添加了日历账户如果没有添加先添加一个日历账户再查询* return 获取账户成功返回账户id否则返回-1*/
private static int checkAndAddCalendarAccount(Context context) {int oldId checkCalendarAccount(context);if (oldId 0) {return oldId;} else {long addId addCalendarAccount(context);if (addId 0) {return checkCalendarAccount(context);} else {return -1;}}
}/*** return 检查是否存在现有账户存在则返回账户id否则返回-1*/
private static int checkCalendarAccount(Context context) {Cursor userCursor context.getContentResolver().query(Uri.parse(CALENDER_URL), null, null, null, null);try {if (userCursor null) { //查询返回空值return -1;}int columnIndex userCursor.getColumnIndex(CalendarContract.Calendars._ID);int count userCursor.getCount();if (count 0) { //存在现有账户取第一个账户的id返回userCursor.moveToFirst();return userCursor.getInt(columnIndex);} else {return -1;}} catch (Exception ex) {// do nothingreturn -1;} finally {if (userCursor ! null) {userCursor.close();}}
}/*** return 添加日历账户账户创建成功则返回账户id否则返回-1*/
private static long addCalendarAccount(Context context) {TimeZone timeZone TimeZone.getDefault();ContentValues value new ContentValues();value.put(CalendarContract.Calendars.NAME, CALENDARS_NAME);value.put(CalendarContract.Calendars.ACCOUNT_NAME, CALENDARS_ACCOUNT_NAME);value.put(CalendarContract.Calendars.ACCOUNT_TYPE, CALENDARS_ACCOUNT_TYPE);value.put(CalendarContract.Calendars.CALENDAR_DISPLAY_NAME, CALENDARS_DISPLAY_NAME);value.put(CalendarContract.Calendars.VISIBLE, 1);value.put(CalendarContract.Calendars.CALENDAR_COLOR, Color.BLUE);value.put(CalendarContract.Calendars.CALENDAR_ACCESS_LEVEL, CalendarContract.Calendars.CAL_ACCESS_OWNER);value.put(CalendarContract.Calendars.SYNC_EVENTS, 1);value.put(CalendarContract.Calendars.CALENDAR_TIME_ZONE, timeZone.getID());value.put(CalendarContract.Calendars.OWNER_ACCOUNT, CALENDARS_ACCOUNT_NAME);value.put(CalendarContract.Calendars.CAN_ORGANIZER_RESPOND, 0);Uri calendarUri Uri.parse(CALENDER_URL);calendarUri calendarUri.buildUpon().appendQueryParameter(CalendarContract.CALLER_IS_SYNCADAPTER, true).appendQueryParameter(CalendarContract.Calendars.ACCOUNT_NAME, CALENDARS_ACCOUNT_NAME).appendQueryParameter(CalendarContract.Calendars.ACCOUNT_TYPE, CALENDARS_ACCOUNT_TYPE).build();Uri result context.getContentResolver().insert(calendarUri, value);return result null ? -1 : ContentUris.parseId(result);
}
四、增加日历事件
先创建日历事件再将事件加入日历提醒代码如下
private static final String CALENDER_EVENT_URL content://com.android.calendar/events;
private static final String CALENDER_REMINDER_URL content://com.android.calendar/reminders;
private static final String[] PERMISSION_LIST {Manifest.permission.READ_CALENDAR, Manifest.permission.WRITE_CALENDAR};/*** 真正添加日历事件** param context:上下文* param map:日历事件的信息* return 返回事件id*/
private static long addCalendarEvent(Context context, NonNull MapString, Object map) {if (context null) {return 0;}if (!XXPermissions.isGranted(context, PERMISSION_LIST)) {return 0;}int calId checkAndAddCalendarAccount(context); //获取日历账户的idif (calId 0) { //获取账户id失败直接返回添加日历事件失败return 0;}String title (String) map.get(title);String description (String) map.get(description);long start 0;Object originStartTime map.get(start_time);if (originStartTime instanceof Long) {start (Long) originStartTime;}String rule (String) map.get(rule);ContentValues event new ContentValues();event.put(CalendarContract.Events.TITLE, title);event.put(CalendarContract.Events.DESCRIPTION, description);event.put(CalendarContract.Events.CALENDAR_ID, calId); //插入账户的idevent.put(CalendarContract.Events.DTSTART, start);//event.put(CalendarContract.Events.DTEND, end);// 与DURATION不能同时设置event.put(CalendarContract.Events.HAS_ALARM, 1);//设置有闹钟提醒event.put(CalendarContract.Events.EVENT_TIMEZONE, TimeZone.getDefault().getID());//这个是时区必须有event.put(CalendarContract.Events.DURATION, P0S);// 重复设置必须设置否则日期有问题if (!StringUtils.isEmpty(rule)) {event.put(CalendarContract.Events.RRULE, rule);// 重复规则 rruleRecurrence Rule}Uri newEvent context.getContentResolver().insert(Uri.parse(CALENDER_EVENT_URL), event); //添加事件if (newEvent null) { //添加日历事件失败直接返回LogUtils.d(addCalendarEvent2 newEvent 添加日历事件失败直接返回);return 0;}//事件提醒的设定ContentValues values new ContentValues();values.put(CalendarContract.Reminders.EVENT_ID, ContentUris.parseId(newEvent));values.put(CalendarContract.Reminders.MINUTES, 0);// 提前0分钟提醒values.put(CalendarContract.Reminders.METHOD, CalendarContract.Reminders.METHOD_ALERT);Uri reminderEvent context.getContentResolver().insert(Uri.parse(CALENDER_REMINDER_URL), values);if (reminderEvent null) {LogUtils.d(addCalendarEvent2 reminderEvent 添加日历事件失败直接返回);}return Long.parseLong(newEvent.getLastPathSegment());
}
总结下增加事件的规则
您必须加入 CALENDAR_ID 和 DTSTART。您必须加入 EVENT_TIMEZONE。如需获取系统中已安装时区 ID 的列表请使用 getAvailableIDs()。请注意如果您按使用 Intent 插入事件中所述通过 INSERT Intent 插入事件则此规则不适用 — 在该情形下系统会提供默认时区。对于非重复事件您必须加入 DTEND。对于重复事件您必须加入 DURATION以及 RRULE 或 RDATE。请注意如果您按使用 Intent 插入事件中所述通过 INSERT Intent 插入事件则此规则不适用 — 在该情形下您可以将 RRULE 与 DTSTART 和 DTEND 结合使用日历应用会自动将其转换为持续时间。RRULE规则可参考iCalendar Recurrence Rule 规范翻译 - 简书 (jianshu.com)
碎碎念
1、之前添加重复事件只设置 DTEND 导致添加的天数有问题改成DURATION就好了。
2、_ID事件ID非常重要增加日历提醒后需要保存起来后续的删改查都需要这个信息。 五、查找日历事件
查找比较简单了这里使用事件ID(_ID)代码如下
/*** 检查日历事件** param context:* param eventId:* return 返回事件是否存在。true-事件存在false-事件不存在*/
public static boolean checkCalendarEvent(Context context, long eventId) {if (context null || eventId 0) {return false;}if (!XXPermissions.isGranted(context, PERMISSION_LIST)) {return false;}Uri uri ContentUris.withAppendedId(Uri.parse(CALENDER_EVENT_URL), eventId);Cursor eventCursor context.getContentResolver().query(uri, null, null, null, null);if (eventCursor null) {return false;}boolean result eventCursor.getCount() 0;eventCursor.close();return result;
}
六、修改日历事件
public static void updateCalendarEvent(Context context, long eventId) {if (context null || eventId 0) {return;}if (!XXPermissions.isGranted(context, PERMISSION_LIST)) {return;}if (!checkCalendarEvent(context, eventId)) {return;}try {Uri uri ContentUris.withAppendedId(Uri.parse(CALENDER_EVENT_URL), eventId);ContentValues values new ContentValues();values.put(CalendarContract.Events.TITLE, XXXX);int rows context.getContentResolver().update(uri, values, null, null);LogUtils.d(updateCalendarEvent rows rows);} catch (Exception e) {e.printStackTrace();}
} 七、删除日历事件
/*** 删除日历事件*/
public static void deleteCalendarEvent(Context context, long eventId) {if (context null || eventId 0) {return;}if (!XXPermissions.isGranted(context, PERMISSION_LIST)) {return;}if (!checkCalendarEvent(context, eventId)) {return;}try {Uri uri ContentUris.withAppendedId(Uri.parse(CALENDER_EVENT_URL), eventId);int rows context.getContentResolver().delete(uri, null, null);LogUtils.d(deleteCalendarEventById rows rows);} catch (Exception e) {e.printStackTrace();}
}
八、完整代码
import android.Manifest;
import android.content.ContentUris;
import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.graphics.Color;
import android.net.Uri;
import android.provider.CalendarContract;
import android.text.TextUtils;
import android.util.ArrayMap;import androidx.annotation.NonNull;
import androidx.annotation.Nullable;import com.blankj.utilcode.util.LogUtils;
import com.blankj.utilcode.util.StringUtils;
import com.hjq.permissions.XXPermissions;import java.util.ArrayList;
import java.util.Calendar;
import java.util.List;
import java.util.Map;
import java.util.TimeZone;/*** 日历提醒工具类*/
public class CalendarReminderUtils {private static final String CALENDER_URL content://com.android.calendar/calendars;private static final String CALENDER_EVENT_URL content://com.android.calendar/events;private static final String CALENDER_REMINDER_URL content://com.android.calendar/reminders;private static final String CALENDARS_NAME XXX;private static final String CALENDARS_ACCOUNT_NAME XXX;private static final String CALENDARS_ACCOUNT_TYPE CalendarContract.ACCOUNT_TYPE_LOCAL;private static final String CALENDARS_DISPLAY_NAME StringUtils.getString(R.string.app_name) 账户;private static final String[] PERMISSION_LIST {Manifest.permission.READ_CALENDAR, Manifest.permission.WRITE_CALENDAR};/*** 检查是否已经添加了日历账户如果没有添加先添加一个日历账户再查询* return 获取账户成功返回账户id否则返回-1*/private static int checkAndAddCalendarAccount(Context context) {int oldId checkCalendarAccount(context);if (oldId 0) {return oldId;} else {long addId addCalendarAccount(context);if (addId 0) {return checkCalendarAccount(context);} else {return -1;}}}/*** return 检查是否存在现有账户存在则返回账户id否则返回-1*/private static int checkCalendarAccount(Context context) {Cursor userCursor context.getContentResolver().query(Uri.parse(CALENDER_URL), null, null, null, null);try {if (userCursor null) { //查询返回空值return -1;}int columnIndex userCursor.getColumnIndex(CalendarContract.Calendars._ID);int count userCursor.getCount();if (count 0) { //存在现有账户取第一个账户的id返回userCursor.moveToFirst();return userCursor.getInt(columnIndex);} else {return -1;}} catch (Exception ex) {// do nothingreturn -1;} finally {if (userCursor ! null) {userCursor.close();}}}/*** return 添加日历账户账户创建成功则返回账户id否则返回-1*/private static long addCalendarAccount(Context context) {TimeZone timeZone TimeZone.getDefault();ContentValues value new ContentValues();value.put(CalendarContract.Calendars.NAME, CALENDARS_NAME);value.put(CalendarContract.Calendars.ACCOUNT_NAME, CALENDARS_ACCOUNT_NAME);value.put(CalendarContract.Calendars.ACCOUNT_TYPE, CALENDARS_ACCOUNT_TYPE);value.put(CalendarContract.Calendars.CALENDAR_DISPLAY_NAME, CALENDARS_DISPLAY_NAME);value.put(CalendarContract.Calendars.VISIBLE, 1);value.put(CalendarContract.Calendars.CALENDAR_COLOR, Color.BLUE);value.put(CalendarContract.Calendars.CALENDAR_ACCESS_LEVEL, CalendarContract.Calendars.CAL_ACCESS_OWNER);value.put(CalendarContract.Calendars.SYNC_EVENTS, 1);value.put(CalendarContract.Calendars.CALENDAR_TIME_ZONE, timeZone.getID());value.put(CalendarContract.Calendars.OWNER_ACCOUNT, CALENDARS_ACCOUNT_NAME);value.put(CalendarContract.Calendars.CAN_ORGANIZER_RESPOND, 0);Uri calendarUri Uri.parse(CALENDER_URL);calendarUri calendarUri.buildUpon().appendQueryParameter(CalendarContract.CALLER_IS_SYNCADAPTER, true).appendQueryParameter(CalendarContract.Calendars.ACCOUNT_NAME, CALENDARS_ACCOUNT_NAME).appendQueryParameter(CalendarContract.Calendars.ACCOUNT_TYPE, CALENDARS_ACCOUNT_TYPE).build();Uri result context.getContentResolver().insert(calendarUri, value);return result null ? -1 : ContentUris.parseId(result);}/*** 添加日历事件--就寝提醒** param context 上下文* param title 提醒标题* param description 提醒描述* param reminderTime 就寝时间格式HH:mm*/public static long addCalendarFromSleepAlarm(Context context, String title, String description, Nullable String reminderTime) {MapString, Object map new ArrayMap();map.put(title, title);map.put(description, description);map.put(rule, FREQDAILY;COUNT365);if (reminderTime null) {reminderTime 22:00;}String[] split reminderTime.split(:);if (split.length ! 2) {return 0;}Calendar calendar Calendar.getInstance();calendar.set(Calendar.HOUR_OF_DAY, Integer.parseInt(split[0]));calendar.set(Calendar.MINUTE, Integer.parseInt(split[1]));calendar.set(Calendar.SECOND, 0);long start calendar.getTime().getTime();map.put(start_time, start);try {return addCalendarEvent(context, map);} catch (Exception e) {ExceptionManager.get().report(e);}return 0;}/*** 真正添加日历事件** param context:上下文* param map:日历事件的信息* return 返回事件id*/private static long addCalendarEvent(Context context, NonNull MapString, Object map) {if (context null) {return 0;}if (!XXPermissions.isGranted(context, PERMISSION_LIST)) {return 0;}int calId checkAndAddCalendarAccount(context); //获取日历账户的idLogUtils.d(addCalendarEvent checkAndAddCalendarAccount calId calId);if (calId 0) { //获取账户id失败直接返回添加日历事件失败return 0;}String title (String) map.get(title);String description (String) map.get(description);long start 0;Object originStartTime map.get(start_time);if (originStartTime instanceof Long) {start (Long) originStartTime;}String rule (String) map.get(rule);ContentValues event new ContentValues();event.put(CalendarContract.Events.TITLE, title);event.put(CalendarContract.Events.DESCRIPTION, description);event.put(CalendarContract.Events.CALENDAR_ID, calId); //插入账户的idevent.put(CalendarContract.Events.DTSTART, start);//event.put(CalendarContract.Events.DTEND, end);// 与DURATION不能同时设置event.put(CalendarContract.Events.HAS_ALARM, 1);//设置有闹钟提醒event.put(CalendarContract.Events.EVENT_TIMEZONE, TimeZone.getDefault().getID());//这个是时区必须有event.put(CalendarContract.Events.DURATION, P0S);// 重复设置必须设置否则日期有问题if (!StringUtils.isEmpty(rule)) {event.put(CalendarContract.Events.RRULE, rule);// 重复规则 rruleRecurrence Rule}Uri newEvent context.getContentResolver().insert(Uri.parse(CALENDER_EVENT_URL), event); //添加事件if (newEvent null) { //添加日历事件失败直接返回LogUtils.d(addCalendarEvent2 newEvent 添加日历事件失败直接返回);return 0;}//事件提醒的设定ContentValues values new ContentValues();values.put(CalendarContract.Reminders.EVENT_ID, ContentUris.parseId(newEvent));values.put(CalendarContract.Reminders.MINUTES, 0);// 提前0分钟提醒values.put(CalendarContract.Reminders.METHOD, CalendarContract.Reminders.METHOD_ALERT);Uri reminderEvent context.getContentResolver().insert(Uri.parse(CALENDER_REMINDER_URL), values);if (reminderEvent null) {LogUtils.d(addCalendarEvent2 reminderEvent 添加日历事件失败直接返回);}LogUtils.d(addCalendarEvent 事件id Long.parseLong(newEvent.getLastPathSegment()));return Long.parseLong(newEvent.getLastPathSegment());}/*** 检查日历事件** param context:* param eventId:* return 返回事件是否存在。true-事件存在false-事件不存在*/public static boolean checkCalendarEvent(Context context, long eventId) {if (context null || eventId 0) {return false;}if (!XXPermissions.isGranted(context, PERMISSION_LIST)) {return false;}Uri uri ContentUris.withAppendedId(Uri.parse(CALENDER_EVENT_URL), eventId);Cursor eventCursor context.getContentResolver().query(uri, null, null, null, null);if (eventCursor null) {return false;}boolean result eventCursor.getCount() 0;LogUtils.d(checkCalendarEvent eventCursor eventCursor.getCount() ,result result);eventCursor.close();return result;}/*** 删除日历事件*/public static void deleteCalendarEvent(Context context, long eventId) {if (context null || eventId 0) {return;}if (!XXPermissions.isGranted(context, PERMISSION_LIST)) {return;}if (!checkCalendarEvent(context, eventId)) {return;}try {Uri uri ContentUris.withAppendedId(Uri.parse(CALENDER_EVENT_URL), eventId);int rows context.getContentResolver().delete(uri, null, null);LogUtils.d(deleteCalendarEventById rows rows);} catch (Exception e) {e.printStackTrace();}}public static void updateCalendarEvent(Context context, long eventId) {if (context null || eventId 0) {return;}if (!XXPermissions.isGranted(context, PERMISSION_LIST)) {return;}if (!checkCalendarEvent(context, eventId)) {return;}try {Uri uri ContentUris.withAppendedId(Uri.parse(CALENDER_EVENT_URL), eventId);ContentValues values new ContentValues();values.put(CalendarContract.Events.TITLE, XXXX);int rows context.getContentResolver().update(uri, values, null, null);LogUtils.d(updateCalendarEvent rows rows);} catch (Exception e) {e.printStackTrace();}}
}
参考文章
Android 日历表事件表操作_android 读写系统日历 删除-CSDN博客
iCalendar Recurrence Rule 规范翻译 - 简书 (jianshu.com)
