Android实现系统日历同步日程

if (ContextCompat.checkSelfPermission(this,
                Manifest.permission.WRITE_CALENDAR) != PackageManager.PERMISSION_GRANTED) {
            ActivityCompat.requestPermissions(this,
                    new String[]{Manifest.permission.WRITE_CALENDAR,
                            Manifest.permission.READ_CALENDAR}, 1);
  }

String tipTime = "2021-04-25 12:00";
long start = TimeUtils.stringToLong(tipTime ,"yyyy-MM-dd HH:mm");
        long end = start + 60 * 60 * 1000L;
        LogUtil.d("start:" + start);
        LogUtil.d("end:" + end);
 
        String[] split = tipTime.split(" ");
        String[] dateStr = split[0].split("-");
        int mOnth= Integer.parseInt(dateStr[1]);
        int day = Integer.parseInt(dateStr[2]);
 
        String until = "20221231T235959Z";//截止时间：2022年12月31日23点59分59秒
        String mRule = "";
 
        switch (mRepeatType) {
            case 1://不重复
                mRule = null;
                break;
            case 2://按年重复(每年的某月某日)
                mRule = "FREQ=YEARLY;UNTIL=" + until + ";WKST=SU;BYMOnTH=" + month + ";BYMOnTHDAY=" + day;
                break;
            case 3://按月重复（每月的某天）
                mRule = "FREQ=MONTHLY;UNTIL=" + until + ";WKST=SU;BYMOnTHDAY=" + day;
                break;
            case 4://按周重复
                String date = split[0];
                String week = TimeUtils.getWeek(date);
                switch (week) {
                    case "周日":
                        mRule = "FREQ=WEEKLY;UNTIL=" + until + ";WKST=SU;BYDAY=SU";
                        break;
                    case "周一":
                        mRule = "FREQ=WEEKLY;UNTIL=" + until + ";WKST=SU;BYDAY=MO";
                        break;
                    case "周二":
                        mRule = "FREQ=WEEKLY;UNTIL=" + until + ";WKST=SU;BYDAY=TU";
                        break;
                    case "周三":
                        mRule = "FREQ=WEEKLY;UNTIL=" + until + ";WKST=SU;BYDAY=WE";
                        break;
                    case "周四":
                        mRule = "FREQ=WEEKLY;UNTIL=" + until + ";WKST=SU;BYDAY=TH";
                        break;
                    case "周五":
                        mRule = "FREQ=WEEKLY;UNTIL=" + until + ";WKST=SU;BYDAY=FR";
                        break;
                    case "周六":
                        mRule = "FREQ=WEEKLY;UNTIL=" + until + ";WKST=SU;BYDAY=SA";
                        break;
                }
                break;
            case 5://按天（每天）
                mRule = "FREQ=DAILY;UNTIL=" + until;
                break;
            case 6://自定义周几重复，可多选
                mRule = "FREQ=WEEKLY;UNTIL=" + until + ";WKST=SU;BYDAY=";
                String[] weeks = mSelectedWeekStr.split(",");
                for (int i = 0; i 

public static long stringToLong(String strTime, String formatType) {
        Date date = null; // String类型转成date类型
        try {
            date = stringToDate(strTime, formatType);
        } catch (Exception e) {
            e.printStackTrace();
        }
        if (date == null) {
            return 0;
        } else {
            long currentTime = dateToLong(date); // date类型转成long类型
            return currentTime;
        }
    }
 
 
 
    public static Date stringToDate(String strTime, String formatType) {
        SimpleDateFormat formatter = new SimpleDateFormat(formatType);
        Date date = null;
        try {
            date = formatter.parse(strTime);
        } catch (ParseException e) {
            e.printStackTrace();
        }
        return date;
    }
 
 
 
// date要转换的date类型的时间
    public static long dateToLong(Date date) {
        return date.getTime();
    }

import android.content.ContentUris;
import android.content.ContentValues;
import android.content.Context;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.database.Cursor;
import android.graphics.Color;
import android.net.Uri;
import android.os.Build;
import android.provider.CalendarContract;
 
import calendarprovider.Util;
 
import java.util.ArrayList;
import java.util.List;
import java.util.TimeZone;
 
import static com.kyle.calendarprovider.Util.checkContextNull;
 
/**
 * 系统日历工具
 */
public class CalendarProviderManager {
 
    private static StringBuilder builder = new StringBuilder();
 
 
    /**
     * TIP: 要向系统日历插入事件,前提系统中必须存在至少1个日历账户
     ** /
 
 
    // ----------------------- 创建日历账户时账户名使用 ---------------------------
    private static String CALENDAR_NAME = "TestC";
    private static String CALENDAR_ACCOUNT_NAME = "Test";
    private static String CALENDAR_DISPLAY_NAME = "Test的账户";
 
 
    // ------------------------------- 日历账户 -----------------------------------
 
    /**
     * 获取日历账户ID(若没有则会自动创建一个)
     *
     * @return success: 日历账户ID  failed : -1  permission deny : -2
     */
    @SuppressWarnings("WeakerAccess")
    public static long obtainCalendarAccountID(Context context) {
        long calID = checkCalendarAccount(context);
        if (calID >= 0) {
            return calID;
        } else {
            return createCalendarAccount(context);
        }
    }
 
    /**
     * 检查是否存在日历账户
     *
     * @return 存在：日历账户ID  不存在：-1
     */
    private static long checkCalendarAccount(Context context) {
        try (Cursor cursor = context.getContentResolver().query(CalendarContract.Calendars.CONTENT_URI,
                null, null, null, null)) {
            // 不存在日历账户
            if (null == cursor) {
                return -1;
            }
            int count = cursor.getCount();
            // 存在日历账户，获取第一个账户的ID
            if (count > 0) {
                cursor.moveToFirst();
                return cursor.getInt(cursor.getColumnIndex(CalendarContract.Calendars._ID));
            } else {
                return -1;
            }
        }
    }
 
    /**
     * 创建一个新的日历账户
     *
     * @return success：ACCOUNT ID , create failed：-1 , permission deny：-2
     */
    private static long createCalendarAccount(Context context) {
        // 系统日历表
        Uri uri = CalendarContract.Calendars.CONTENT_URI;
 
        // 要创建的账户
        Uri accountUri;
 
        // 开始组装账户数据
        ContentValues account = new ContentValues();
        // 账户类型：本地
        // 在添加账户时，如果账户类型不存在系统中，则可能该新增记录会被标记为脏数据而被删除
        // 设置为ACCOUNT_TYPE_LOCAL可以保证在不存在账户类型时，该新增数据不会被删除
        account.put(CalendarContract.Calendars.ACCOUNT_TYPE, CalendarContract.ACCOUNT_TYPE_LOCAL);
        // 日历在表中的名称
        account.put(CalendarContract.Calendars.NAME, CALENDAR_NAME);
        // 日历账户的名称
        account.put(CalendarContract.Calendars.ACCOUNT_NAME, CALENDAR_ACCOUNT_NAME);
        // 账户显示的名称
        account.put(CalendarContract.Calendars.CALENDAR_DISPLAY_NAME, CALENDAR_DISPLAY_NAME);
        // 日历的颜色
        account.put(CalendarContract.Calendars.CALENDAR_COLOR, Color.parseColor("#515bd4"));
        // 用户对此日历的获取使用权限等级
        account.put(CalendarContract.Calendars.CALENDAR_ACCESS_LEVEL, CalendarContract.Calendars.CAL_ACCESS_OWNER);
        // 设置此日历可见
        account.put(CalendarContract.Calendars.VISIBLE, 1);
        // 日历时区
        account.put(CalendarContract.Calendars.CALENDAR_TIME_ZONE, TimeZone.getDefault().getID());
        // 可以修改日历时区
        account.put(CalendarContract.Calendars.CAN_MODIFY_TIME_ZONE, 1);
        // 同步此日历到设备上
        account.put(CalendarContract.Calendars.SYNC_EVENTS, 1);
        // 拥有者的账户
        account.put(CalendarContract.Calendars.OWNER_ACCOUNT, CALENDAR_ACCOUNT_NAME);
        // 可以响应事件
        account.put(CalendarContract.Calendars.CAN_ORGANIZER_RESPOND, 1);
        // 单个事件设置的最大的提醒数
        account.put(CalendarContract.Calendars.MAX_REMINDERS, 8);
        // 设置允许提醒的方式
        account.put(CalendarContract.Calendars.ALLOWED_REMINDERS, "0,1,2,3,4");
        // 设置日历支持的可用性类型
        account.put(CalendarContract.Calendars.ALLOWED_AVAILABILITY, "0,1,2");
        // 设置日历允许的出席者类型
        account.put(CalendarContract.Calendars.ALLOWED_ATTENDEE_TYPES, "0,1,2");
 
        /**
         *   TIP: 修改或添加ACCOUNT_NAME只能由SYNC_ADAPTER调用
         *  对uri设置CalendarContract.CALLER_IS_SYNCADAPTER为true,即标记当前操作为SYNC_ADAPTER操作
         *   在设置CalendarContract.CALLER_IS_SYNCADAPTER为true时,必须带上参数ACCOUNT_NAME和ACCOUNT_TYPE(任意)
         **/
        uri = uri.buildUpon()
                .appendQueryParameter(CalendarContract.CALLER_IS_SYNCADAPTER, "true")
                .appendQueryParameter(CalendarContract.Calendars.ACCOUNT_NAME, CALENDAR_ACCOUNT_NAME)
                .appendQueryParameter(CalendarContract.Calendars.ACCOUNT_TYPE,
                        CalendarContract.Calendars.CALENDAR_LOCATION)
                .build();
 
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
            // 检查日历权限
            if (PackageManager.PERMISSION_GRANTED == context.checkSelfPermission(
                    "android.permission.WRITE_CALENDAR")) {
                accountUri = context.getContentResolver().insert(uri, account);
            } else {
                return -2;
            }
        } else {
            accountUri = context.getContentResolver().insert(uri, account);
        }
 
        return accountUri == null &＃63; -1 : ContentUris.parseId(accountUri);
    }
 
    /**
     * 删除创建的日历账户
     *
     * @return -2: permission deny  0: No designated account  1: delete success
     */
    public static int deleteCalendarAccountByName(Context context) {
        checkContextNull(context);
 
        int deleteCount;
        Uri uri = CalendarContract.Calendars.CONTENT_URI;
 
        String selection = "((" + CalendarContract.Calendars.ACCOUNT_NAME + " = &＃63;) AND ("
                + CalendarContract.Calendars.ACCOUNT_TYPE + " = &＃63;))";
        String[] selectiOnArgs= new String[]{CALENDAR_ACCOUNT_NAME, CalendarContract.ACCOUNT_TYPE_LOCAL};
 
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
            if (PackageManager.PERMISSION_GRANTED == context.checkSelfPermission(
                    "android.permission.WRITE_CALENDAR")) {
                deleteCount = context.getContentResolver().delete(uri, selection, selectionArgs);
            } else {
                return -2;
            }
        } else {
            deleteCount = context.getContentResolver().delete(uri, selection, selectionArgs);
        }
 
        return deleteCount;
    }
 
 
    // ------------------------------- 添加日历事件 -----------------------------------
 
    /**
     * 添加日历事件
     *
     * @param calendarEvent 日历事件(详细参数说明请参看{@link CalendarEvent}构造方法)
     * @return 0: success  -1: failed  -2: permission deny
     */
    public static int addCalendarEvent(Context context, CalendarEvent calendarEvent) {
          /**
           * TIP: 插入一个新事件的规则：
           *  1.  必须包含CALENDAR_ID和DTSTART字段
           *  2.  必须包含EVENT_TIMEZONE字段,使用TimeZone.getDefault().getID()方法获取默认时区
           *  3.  对于非重复发生的事件,必须包含DTEND字段
           *  4.  对重复发生的事件,必须包含一个附加了RRULE或RDATE字段的DURATION字段
           */
 
        checkContextNull(context);
 
        // 获取日历账户ID，也就是要将事件插入到的账户
        long calID = obtainCalendarAccountID(context);
 
        // 系统日历事件表
        Uri uri1 = CalendarContract.Events.CONTENT_URI;
        // 创建的日历事件
        Uri eventUri;
 
        // 系统日历事件提醒表
        Uri uri2 = CalendarContract.Reminders.CONTENT_URI;
        // 创建的日历事件提醒
        Uri reminderUri;
 
        // 开始组装事件数据
        ContentValues event = new ContentValues();
        // 事件要插入到的日历账户
        event.put(CalendarContract.Events.CALENDAR_ID, calID);
        setupEvent(calendarEvent, event);
 
 
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
            // 判断权限
            if (PackageManager.PERMISSION_GRANTED == context.checkSelfPermission(
                    "android.permission.WRITE_CALENDAR")) {
                eventUri = context.getContentResolver().insert(uri1, event);
            } else {
                return -2;
            }
        } else {
            eventUri = context.getContentResolver().insert(uri1, event);
        }
 
        if (null == eventUri) {
            return -1;
        }
 
 
        if (-2 != calendarEvent.getAdvanceTime()) {
            // 获取事件ID
            long eventID = ContentUris.parseId(eventUri);
 
            // 开始组装事件提醒数据
            ContentValues reminders = new ContentValues();
            // 此提醒所对应的事件ID
            reminders.put(CalendarContract.Reminders.EVENT_ID, eventID);
            // 设置提醒提前的时间(0：准时  -1：使用系统默认)
            reminders.put(CalendarContract.Reminders.MINUTES, calendarEvent.getAdvanceTime());
            // 设置事件提醒方式为通知警报
            reminders.put(CalendarContract.Reminders.METHOD, CalendarContract.Reminders.METHOD_ALERT);
            reminderUri = context.getContentResolver().insert(uri2, reminders);
 
            if (null == reminderUri) {
                return -1;
            }
        }
 
        return 0;
    }
 
 
    // ------------------------------- 更新日历事件 -----------------------------------
 
    /**
     * 更新指定ID的日历事件
     *
     * @param newCalendarEvent 更新的日历事件
     * @return -2: permission deny  else success
     */
    public static int updateCalendarEvent(Context context, long eventID, CalendarEvent newCalendarEvent) {
        checkContextNull(context);
 
        int updatedCount1;
 
        Uri uri1 = CalendarContract.Events.CONTENT_URI;
        Uri uri2 = CalendarContract.Reminders.CONTENT_URI;
 
        ContentValues event = new ContentValues();
        setupEvent(newCalendarEvent, event);
 
        // 更新匹配条件
        String selection1 = "(" + CalendarContract.Events._ID + " = &＃63;)";
        String[] selectionArgs1 = new String[]{String.valueOf(eventID)};
 
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
            if (PackageManager.PERMISSION_GRANTED == context.checkSelfPermission(
                    "android.permission.WRITE_CALENDAR")) {
                updatedCount1 = context.getContentResolver().update(uri1, event, selection1, selectionArgs1);
            } else {
                return -2;
            }
        } else {
            updatedCount1 = context.getContentResolver().update(uri1, event, selection1, selectionArgs1);
        }
 
 
        ContentValues reminders = new ContentValues();
        reminders.put(CalendarContract.Reminders.MINUTES, newCalendarEvent.getAdvanceTime());
        reminders.put(CalendarContract.Reminders.METHOD, CalendarContract.Reminders.METHOD_ALERT);
 
        // 更新匹配条件
        String selection2 = "(" + CalendarContract.Reminders.EVENT_ID + " = &＃63;)";
        String[] selectionArgs2 = new String[]{String.valueOf(eventID)};
 
        int updatedCount2 = context.getContentResolver().update(uri2, reminders, selection2, selectionArgs2);
 
        return (updatedCount1 + updatedCount2) / 2;
    }
 
    /**
     * 更新指定ID事件的开始时间
     *
     * @return If successfully returns 1
     */
    public static int updateCalendarEventbeginTime(Context context, long eventID, long newBeginTime) {
        checkContextNull(context);
 
        Uri uri = CalendarContract.Events.CONTENT_URI;
 
        // 新的数据
        ContentValues event = new ContentValues();
        event.put(CalendarContract.Events.DTSTART, newBeginTime);
 
        // 匹配条件
        String selection = "(" + CalendarContract.Events._ID + " = &＃63;)";
        String[] selectiOnArgs= new String[]{String.valueOf(eventID)};
 
        return context.getContentResolver().update(uri, event, selection, selectionArgs);
    }
 
    /**
     * 更新指定ID事件的结束时间
     *
     * @return If successfully returns 1
     */
    public static int updateCalendarEventEndTime(Context context, long eventID, long newEndTime) {
        checkContextNull(context);
 
        Uri uri = CalendarContract.Events.CONTENT_URI;
 
        // 新的数据
        ContentValues event = new ContentValues();
        event.put(CalendarContract.Events.DTEND, newEndTime);
 
 
        // 匹配条件
        String selection = "(" + CalendarContract.Events._ID + " = &＃63;)";
        String[] selectiOnArgs= new String[]{String.valueOf(eventID)};
 
        return context.getContentResolver().update(uri, event, selection, selectionArgs);
    }
 
    /**
     * 更新指定ID事件的起始时间
     *
     * @return If successfully returns 1
     */
    public static int updateCalendarEventTime(Context context, long eventID, long newBeginTime,
                                              long newEndTime) {
        checkContextNull(context);
 
        Uri uri = CalendarContract.Events.CONTENT_URI;
 
        // 新的数据
        ContentValues event = new ContentValues();
        event.put(CalendarContract.Events.DTSTART, newBeginTime);
        event.put(CalendarContract.Events.DTEND, newEndTime);
 
 
        // 匹配条件
        String selection = "(" + CalendarContract.Events._ID + " = &＃63;)";
        String[] selectiOnArgs= new String[]{String.valueOf(eventID)};
 
        return context.getContentResolver().update(uri, event, selection, selectionArgs);
    }
 
    /**
     * 更新指定ID事件的标题
     *
     * @return If successfully returns 1
     */
    public static int updateCalendarEventTitle(Context context, long eventID, String newTitle) {
        checkContextNull(context);
 
        Uri uri = CalendarContract.Events.CONTENT_URI;
 
        // 新的数据
        ContentValues event = new ContentValues();
        event.put(CalendarContract.Events.TITLE, newTitle);
 
 
        // 匹配条件
        String selection = "(" + CalendarContract.Events._ID + " = &＃63;)";
        String[] selectiOnArgs= new String[]{String.valueOf(eventID)};
 
        return context.getContentResolver().update(uri, event, selection, selectionArgs);
    }
 
    /**
     * 更新指定ID事件的描述
     *
     * @return If successfully returns 1
     */
    public static int updateCalendarEventDes(Context context, long eventID, String newEventDes) {
        checkContextNull(context);
 
        Uri uri = CalendarContract.Events.CONTENT_URI;
 
        // 新的数据
        ContentValues event = new ContentValues();
        event.put(CalendarContract.Events.DESCRIPTION, newEventDes);
 
 
        // 匹配条件
        String selection = "(" + CalendarContract.Events._ID + " = &＃63;)";
        String[] selectiOnArgs= new String[]{String.valueOf(eventID)};
 
        return context.getContentResolver().update(uri, event, selection, selectionArgs);
    }
 
    /**
     * 更新指定ID事件的地点
     *
     * @return If successfully returns 1
     */
    public static int updateCalendarEventLocation(Context context, long eventID, String newEventLocation) {
        checkContextNull(context);
 
        Uri uri = CalendarContract.Events.CONTENT_URI;
 
        // 新的数据
        ContentValues event = new ContentValues();
        event.put(CalendarContract.Events.EVENT_LOCATION, newEventLocation);
 
 
        // 匹配条件
        String selection = "(" + CalendarContract.Events._ID + " = &＃63;)";
        String[] selectiOnArgs= new String[]{String.valueOf(eventID)};
 
        return context.getContentResolver().update(uri, event, selection, selectionArgs);
    }
 
    /**
     * 更新指定ID事件的标题和描述
     *
     * @return If successfully returns 1
     */
    public static int updateCalendarEventTitAndDes(Context context, long eventID, String newEventTitle,
                                                   String newEventDes) {
        checkContextNull(context);
 
        Uri uri = CalendarContract.Events.CONTENT_URI;
 
        // 新的数据
        ContentValues event = new ContentValues();
        event.put(CalendarContract.Events.TITLE, newEventTitle);
        event.put(CalendarContract.Events.DESCRIPTION, newEventDes);
 
 
        // 匹配条件
        String selection = "(" + CalendarContract.Events._ID + " = &＃63;)";
        String[] selectiOnArgs= new String[]{String.valueOf(eventID)};
 
        return context.getContentResolver().update(uri, event, selection, selectionArgs);
    }
 
    /**
     * 更新指定ID事件的常用信息(标题、描述、地点)
     *
     * @return If successfully returns 1
     */
    public static int updateCalendarEventCommonInfo(Context context, long eventID, String newEventTitle,
                                                    String newEventDes, String newEventLocation) {
        checkContextNull(context);
 
        Uri uri = CalendarContract.Events.CONTENT_URI;
 
        // 新的数据
        ContentValues event = new ContentValues();
        event.put(CalendarContract.Events.TITLE, newEventTitle);
        event.put(CalendarContract.Events.DESCRIPTION, newEventDes);
        event.put(CalendarContract.Events.EVENT_LOCATION, newEventLocation);
 
 
        // 匹配条件
        String selection = "(" + CalendarContract.Events._ID + " = &＃63;)";
        String[] selectiOnArgs= new String[]{String.valueOf(eventID)};
 
        return context.getContentResolver().update(uri, event, selection, selectionArgs);
    }
 
    /**
     * 更新指定ID事件的提醒方式
     *
     * @return If successfully returns 1
     */
    private static int updateCalendarEventReminder(Context context, long eventID, long newAdvanceTime) {
        checkContextNull(context);
 
        Uri uri = CalendarContract.Reminders.CONTENT_URI;
 
        ContentValues reminders = new ContentValues();
        reminders.put(CalendarContract.Reminders.MINUTES, newAdvanceTime);
 
        // 更新匹配条件
        String selection2 = "(" + CalendarContract.Reminders.EVENT_ID + " = &＃63;)";
        String[] selectionArgs2 = new String[]{String.valueOf(eventID)};
 
        return context.getContentResolver().update(uri, reminders, selection2, selectionArgs2);
    }
 
    /**
     * 更新指定ID事件的提醒重复规则
     *
     * @return If successfully returns 1
     */
    private static int updateCalendarEventRRule(Context context, long eventID, String newRRule) {
        checkContextNull(context);
 
        Uri uri = CalendarContract.Events.CONTENT_URI;
 
        // 新的数据
        ContentValues event = new ContentValues();
        event.put(CalendarContract.Events.RRULE, newRRule);
 
        // 匹配条件
        String selection = "(" + CalendarContract.Events._ID + " = &＃63;)";
        String[] selectiOnArgs= new String[]{String.valueOf(eventID)};
 
        return context.getContentResolver().update(uri, event, selection, selectionArgs);
    }
 
 
    // ------------------------------- 删除日历事件 -----------------------------------
 
    /**
     * 删除日历事件
     *
     * @param eventID 事件ID
     * @return -2: permission deny  else success
     */
    public static int deleteCalendarEvent(Context context, long eventID) {
        checkContextNull(context);
 
        int deletedCount1;
        Uri uri1 = CalendarContract.Events.CONTENT_URI;
        Uri uri2 = CalendarContract.Reminders.CONTENT_URI;
 
        // 删除匹配条件
        String selection = "(" + CalendarContract.Events._ID + " = &＃63;)";
        String[] selectiOnArgs= new String[]{String.valueOf(eventID)};
 
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
            if (PackageManager.PERMISSION_GRANTED == context.checkSelfPermission(
                    "android.permission.WRITE_CALENDAR")) {
                deletedCount1 = context.getContentResolver().delete(uri1, selection, selectionArgs);
            } else {
                return -2;
            }
        } else {
            deletedCount1 = context.getContentResolver().delete(uri1, selection, selectionArgs);
        }
 
        // 删除匹配条件
        String selection2 = "(" + CalendarContract.Reminders.EVENT_ID + " = &＃63;)";
        String[] selectionArgs2 = new String[]{String.valueOf(eventID)};
 
        int deletedCount2 = context.getContentResolver().delete(uri2, selection2, selectionArgs2);
 
        return (deletedCount1 + deletedCount2) / 2;
    }
 
 
    // ------------------------------- 查询日历事件 -----------------------------------
 
    /**
     * 查询指定日历账户下的所有事件
     *
     * @return If failed return null else return List
     */
    public static List queryAccountEvent(Context context, long calID) {
        checkContextNull(context);
 
        final String[] EVENT_PROJECTION = new String[]{
                CalendarContract.Events.CALENDAR_ID,             // 在表中的列索引0
                CalendarContract.Events.TITLE,                   // 在表中的列索引1
                CalendarContract.Events.DESCRIPTION,             // 在表中的列索引2
                CalendarContract.Events.EVENT_LOCATION,          // 在表中的列索引3
                CalendarContract.Events.DISPLAY_COLOR,           // 在表中的列索引4
                CalendarContract.Events.STATUS,                  // 在表中的列索引5
                CalendarContract.Events.DTSTART,                 // 在表中的列索引6
                CalendarContract.Events.DTEND,                   // 在表中的列索引7
                CalendarContract.Events.DURATION,                // 在表中的列索引8
                CalendarContract.Events.EVENT_TIMEZONE,          // 在表中的列索引9
                CalendarContract.Events.EVENT_END_TIMEZONE,      // 在表中的列索引10
                CalendarContract.Events.ALL_DAY,                 // 在表中的列索引11
                CalendarContract.Events.ACCESS_LEVEL,            // 在表中的列索引12
                CalendarContract.Events.AVAILABILITY,            // 在表中的列索引13
                CalendarContract.Events.HAS_ALARM,               // 在表中的列索引14
                CalendarContract.Events.RRULE,                   // 在表中的列索引15
                CalendarContract.Events.RDATE,                   // 在表中的列索引16
                CalendarContract.Events.HAS_ATTENDEE_DATA,       // 在表中的列索引17
                CalendarContract.Events.LAST_DATE,               // 在表中的列索引18
                CalendarContract.Events.ORGANIZER,               // 在表中的列索引19
                CalendarContract.Events.IS_ORGANIZER,            // 在表中的列索引20
                CalendarContract.Events._ID                      // 在表中的列索引21
        };
 
        // 事件匹配
        Uri uri = CalendarContract.Events.CONTENT_URI;
        Uri uri2 = CalendarContract.Reminders.CONTENT_URI;
 
        String selection = "(" + CalendarContract.Events.CALENDAR_ID + " = &＃63;)";
        String[] selectiOnArgs= new String[]{String.valueOf(calID)};
 
        Cursor cursor;
 
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
            if (PackageManager.PERMISSION_GRANTED == context.checkSelfPermission(
                    "android.permission.READ_CALENDAR")) {
                cursor = context.getContentResolver().query(uri, EVENT_PROJECTION, selection,
                        selectionArgs, null);
            } else {
                return null;
            }
        } else {
            cursor = context.getContentResolver().query(uri, EVENT_PROJECTION, selection,
                    selectionArgs, null);
        }
 
        if (null == cursor) {
            return null;
        }
 
        // 查询结果
        List result = new ArrayList<>();
 
        // 开始查询数据
        if (cursor.moveToFirst()) {
            do {
                CalendarEvent calendarEvent = new CalendarEvent();
                result.add(calendarEvent);
                calendarEvent.setId(cursor.getLong(cursor.getColumnIndex(
                        CalendarContract.Events._ID)));
                calendarEvent.setCalID(cursor.getLong(cursor.getColumnIndex(
                        CalendarContract.Events.CALENDAR_ID)));
                calendarEvent.setTitle(cursor.getString(cursor.getColumnIndex(
                        CalendarContract.Events.TITLE)));
                calendarEvent.setDescription(cursor.getString(cursor.getColumnIndex(
                        CalendarContract.Events.DESCRIPTION)));
                calendarEvent.setEventLocation(cursor.getString(cursor.getColumnIndex(
                        CalendarContract.Events.EVENT_LOCATION)));
                calendarEvent.setDisplayColor(cursor.getInt(cursor.getColumnIndex(
                        CalendarContract.Events.DISPLAY_COLOR)));
                calendarEvent.setStatus(cursor.getInt(cursor.getColumnIndex(
                        CalendarContract.Events.STATUS)));
                calendarEvent.setStart(cursor.getLong(cursor.getColumnIndex(
                        CalendarContract.Events.DTSTART)));
                calendarEvent.setEnd(cursor.getLong(cursor.getColumnIndex(
                        CalendarContract.Events.DTEND)));
                calendarEvent.setDuration(cursor.getString(cursor.getColumnIndex(
                        CalendarContract.Events.DURATION)));
                calendarEvent.setEventTimeZone(cursor.getString(cursor.getColumnIndex(
                        CalendarContract.Events.EVENT_TIMEZONE)));
                calendarEvent.setEventEndTimeZone(cursor.getString(cursor.getColumnIndex(
                        CalendarContract.Events.EVENT_END_TIMEZONE)));
                calendarEvent.setAllDay(cursor.getInt(cursor.getColumnIndex(
                        CalendarContract.Events.ALL_DAY)));
                calendarEvent.setAccessLevel(cursor.getInt(cursor.getColumnIndex(
                        CalendarContract.Events.ACCESS_LEVEL)));
                calendarEvent.setAvailability(cursor.getInt(cursor.getColumnIndex(
                        CalendarContract.Events.AVAILABILITY)));
                calendarEvent.setHasAlarm(cursor.getInt(cursor.getColumnIndex(
                        CalendarContract.Events.HAS_ALARM)));
                calendarEvent.setRRule(cursor.getString(cursor.getColumnIndex(
                        CalendarContract.Events.RRULE)));
                calendarEvent.setRDate(cursor.getString(cursor.getColumnIndex(
                        CalendarContract.Events.RDATE)));
                calendarEvent.setHasAttendeeData(cursor.getInt(cursor.getColumnIndex(
                        CalendarContract.Events.HAS_ATTENDEE_DATA)));
                calendarEvent.setLastDate(cursor.getInt(cursor.getColumnIndex(
                        CalendarContract.Events.LAST_DATE)));
                calendarEvent.setOrganizer(cursor.getString(cursor.getColumnIndex(
                        CalendarContract.Events.ORGANIZER)));
                calendarEvent.setIsOrganizer(cursor.getString(cursor.getColumnIndex(
                        CalendarContract.Events.IS_ORGANIZER)));
 
 
                // ----------------------- 开始查询事件提醒 ------------------------------
                String[] REMINDER_PROJECTION = new String[]{
                        CalendarContract.Reminders._ID,                     // 在表中的列索引0
                        CalendarContract.Reminders.EVENT_ID,                // 在表中的列索引1
                        CalendarContract.Reminders.MINUTES,                 // 在表中的列索引2
                        CalendarContract.Reminders.METHOD,                  // 在表中的列索引3
                };
                String selection2 = "(" + CalendarContract.Reminders.EVENT_ID + " = &＃63;)";
                String[] selectionArgs2 = new String[]{String.valueOf(calendarEvent.getId())};
 
                try (Cursor reminderCursor = context.getContentResolver().query(uri2, REMINDER_PROJECTION,
                        selection2, selectionArgs2, null)) {
                    if (null != reminderCursor) {
                        if (reminderCursor.moveToFirst()) {
                            List reminders = new ArrayList<>();
                            do {
                                CalendarEvent.EventReminders reminders1 = new CalendarEvent.EventReminders();
                                reminders.add(reminders1);
                                reminders1.setReminderId(reminderCursor.getLong(
                                        reminderCursor.getColumnIndex(CalendarContract.Reminders._ID)));
                                reminders1.setReminderEventID(reminderCursor.getLong(
                                        reminderCursor.getColumnIndex(CalendarContract.Reminders.EVENT_ID)));
                                reminders1.setReminderMinute(reminderCursor.getInt(
                                        reminderCursor.getColumnIndex(CalendarContract.Reminders.MINUTES)));
                                reminders1.setReminderMethod(reminderCursor.getInt(
                                        reminderCursor.getColumnIndex(CalendarContract.Reminders.METHOD)));
                            } while (reminderCursor.moveToNext());
                            calendarEvent.setReminders(reminders);
                        }
                    }
                }
            } while (cursor.moveToNext());
            cursor.close();
        }
 
        return result;
    }
 
    /**
     * 判断日历账户中是否已经存在此事件
     *
     * @param begin 事件开始时间
     * @param end   事件结束时间
     * @param title 事件标题
     */
    public static boolean isEventAlreadyExist(Context context, long begin, long end, String title) {
        String[] projection = new String[]{
                CalendarContract.Instances.BEGIN,
                CalendarContract.Instances.END,
                CalendarContract.Instances.TITLE
        };
 
        Cursor cursor = CalendarContract.Instances.query(
                context.getContentResolver(), projection, begin, end, title);
 
        return null != cursor && cursor.moveToFirst()
                && cursor.getString(
                cursor.getColumnIndex(CalendarContract.Instances.TITLE)).equals(title);
    }
 
 
    // ------------------------------- 日历事件相关 -----------------------------------
 
    /**
     * 组装日历事件
     */
    private static void setupEvent(CalendarEvent calendarEvent, ContentValues event) {
        // 事件开始时间
        event.put(CalendarContract.Events.DTSTART, calendarEvent.getStart());
        // 事件结束时间
        event.put(CalendarContract.Events.DTEND, calendarEvent.getEnd());
        // 事件标题
        event.put(CalendarContract.Events.TITLE, calendarEvent.getTitle());
        // 事件描述(对应手机系统日历备注栏)
        event.put(CalendarContract.Events.DESCRIPTION, calendarEvent.getDescription());
        // 事件地点
        event.put(CalendarContract.Events.EVENT_LOCATION, calendarEvent.getEventLocation());
        // 事件时区
        event.put(CalendarContract.Events.EVENT_TIMEZONE, TimeZone.getDefault().getID());
        // 定义事件的显示，默认即可
        event.put(CalendarContract.Events.ACCESS_LEVEL, CalendarContract.Events.ACCESS_DEFAULT);
        // 事件的状态
        event.put(CalendarContract.Events.STATUS, 0);
        // 设置事件提醒警报可用
        event.put(CalendarContract.Events.HAS_ALARM, 1);
        // 设置事件忙
        event.put(CalendarContract.Events.AVAILABILITY, CalendarContract.Events.AVAILABILITY_BUSY);
        if (null != calendarEvent.getRRule()) {
            // 设置事件重复规则
            event.put(CalendarContract.Events.RRULE,
                    getFullRRuleForRRule(calendarEvent.getRRule(),
                            calendarEvent.getStart(), calendarEvent.getEnd()));
        }
    }
 
    /**
     * 获取完整的重复规则(包含终止时间)
     *
     * @param rRule     重复规则
     * @param beginTime 开始时间
     * @param endTime   结束时间
     */
    private static String getFullRRuleForRRule(String rRule, long beginTime, long endTime) {
        builder.delete(0, builder.length());
 
        switch (rRule) {
            case RRuleConstant.REPEAT_WEEKLY_BY_MO:
            case RRuleConstant.REPEAT_WEEKLY_BY_TU:
            case RRuleConstant.REPEAT_WEEKLY_BY_WE:
            case RRuleConstant.REPEAT_WEEKLY_BY_TH:
            case RRuleConstant.REPEAT_WEEKLY_BY_FR:
            case RRuleConstant.REPEAT_WEEKLY_BY_SA:
            case RRuleConstant.REPEAT_WEEKLY_BY_SU:
                return builder.append(rRule).append(Util.getFinalRRuleMode(endTime)).toString();
            case RRuleConstant.REPEAT_CYCLE_WEEKLY:
                return builder.append(rRule).append(Util.getWeekForDate(beginTime)).append("; UNTIL = ")
                        .append(Util.getFinalRRuleMode(endTime)).toString();
            case RRuleConstant.REPEAT_CYCLE_MONTHLY:
                return builder.append(rRule).append(Util.getDayOfMonth(beginTime))
                        .append("; UNTIL = ").append(Util.getFinalRRuleMode(endTime)).toString();
            default:
                return rRule;
        }
    }
 
 
    // ------------------------------- 通过Intent启动系统日历 -----------------------------------
 
    /*
        日历的Intent对象：
           动作                  描述                         附加功能
        ACTION_VIEW        打开指定时间的日历                    无
        ACTION_VIEW        查看由EVENT_ID指定的事件        开始时间，结束时间
        ACTION_EDIT        编辑由EVENT_ID指定的事件        开始时间，结束时间
        ACTION_INSERT      创建一个事件                         所有
        Intent对象的附加功能：
        Events.TITLE                                        事件标题
        CalendarContract.EXTRA_EVENT_BEGIN_TIME             开始时间
        CalendarContract.EXTRA_EVENT_END_TIME               结束时间
        CalendarContract.EXTRA_EVENT_ALL_DAY                是否全天
        Events.EVENT_LOCATION                               事件地点
        Events.DESCRIPTION                                  事件描述
        Intent.EXTRA_EMALL                                  受邀者电子邮件,用逗号分隔
        Events.RRULE                                        事件重复规则
        Events.ACCESS_LEVEL                                 事件私有还是公有
        Events.AVAILABILITY                                 预定事件是在忙时计数还是闲时计数
     */
 
    /**
     * 通过Intent启动系统日历新建事件界面插入新的事件
     * 

     * TIP: 这将不再需要声明读写日历数据的权限
     *
     * @param beginTime 事件开始时间
     * @param endTime   事件结束时间
     * @param title     事件标题
     * @param des       事件描述
     * @param location  事件地点
     * @param isAllDay  事件是否全天
     */
    public static void startCalendarForIntentToInsert(Context context, long beginTime, long endTime,
                                                      String title, String des, String location,
                                                      boolean isAllDay) {
        checkCalendarAccount(context);
 
 
        // FIXME: 2019/3/6 VIVO手机无法打开界面，找不到对应的Activity  com.bbk.calendar
        Intent intent = new Intent(Intent.ACTION_INSERT)
                .setData(CalendarContract.Events.CONTENT_URI)
                .putExtra(CalendarContract.EXTRA_EVENT_BEGIN_TIME, beginTime)
                .putExtra(CalendarContract.EXTRA_EVENT_END_TIME, endTime)
                .putExtra(CalendarContract.Events.ALL_DAY, isAllDay)
                .putExtra(CalendarContract.Events.TITLE, title)
                .putExtra(CalendarContract.Events.DESCRIPTION, des)
                .putExtra(CalendarContract.Events.EVENT_LOCATION, location);
 
        if (null != intent.resolveActivity(context.getPackageManager())) {
            context.startActivity(intent);
        }
    }
 
    /**
     * 通过Intent启动系统日历来编辑指定ID的事件
     * 

     *
     * @param eventID 要编辑的事件ID
     */
    public static void startCalendarForIntentToEdit(Context context, long eventID) {
        checkCalendarAccount(context);
 
        Uri uri = ContentUris.withAppendedId(CalendarContract.Events.CONTENT_URI, eventID);
        Intent intent = new Intent(Intent.ACTION_EDIT).setData(uri);
 
        if (null != intent.resolveActivity(context.getPackageManager())) {
            context.startActivity(intent);
        }
    }
 
    /**
     * 通过Intent启动系统日历来查看指定ID的事件
     *
     * @param eventID 要查看的事件ID
     */
    public static void startCalendarForIntentToView(Context context, long eventID) {
        checkCalendarAccount(context);
 
        Uri uri = ContentUris.withAppendedId(CalendarContract.Events.CONTENT_URI, eventID);
        Intent intent = new Intent(Intent.ACTION_VIEW).setData(uri);
 
        if (null != intent.resolveActivity(context.getPackageManager())) {
            context.startActivity(intent);
        }
    }
 
 
    // ----------------------------- 日历账户名相关设置 -----------------------------------
 
    public static String getCalendarName() {
        return CALENDAR_NAME;
    }
 
    public static void setCalendarName(String calendarName) {
        CALENDAR_NAME = calendarName;
    }
 
    public static String getCalendarAccountName() {
        return CALENDAR_ACCOUNT_NAME;
    }
 
    public static void setCalendarAccountName(String calendarAccountName) {
        CALENDAR_ACCOUNT_NAME = calendarAccountName;
    }
 
    public static String getCalendarDisplayName() {
        return CALENDAR_DISPLAY_NAME;
    }
 
    public static void setCalendarDisplayName(String calendarDisplayName) {
        CALENDAR_DISPLAY_NAME = calendarDisplayName;
    }
 
}

public class CalendarEvent {
 
    // ----------------------- 事件属性 -----------------------
 
    /**
     * 事件在表中的ID
     */
    private long id;
    /**
     * 事件所属日历账户的ID
     */
    private long calID;
    private String title;
    private String description;
    private String eventLocation;
    private int displayColor;
    private int status;
    private long start;
    private long end;
    private String duration;
    private String eventTimeZone;
    private String eventEndTimeZone;
    private int allDay;
    private int accessLevel;
    private int availability;
    private int hasAlarm;
    private String rRule;
    private String rDate;
    private int hasAttendeeData;
    private int lastDate;
    private String organizer;
    private String isOrganizer;
 
 
    // ----------------------------------------------------------------------------------------
    /**
     * 注：此属性不属于CalendarEvent
     * 这里只是为了方便构造方法提供事件提醒时间
     */
    private int advanceTime;
    // ----------------------------------------------------------------------------------------
 
 
    // ----------------------- 事件提醒属性 -----------------------
    private List reminders;
 
    CalendarEvent() {
    }
 
    /**
     * 用于方便添加完整日历事件提供一个构造方法
     *
     * @param title         事件标题
     * @param description   事件描述
     * @param eventLocation 事件地点
     * @param start         事件开始时间
     * @param end           事件结束时间  If is not a repeat event, this param is must need else null
     * @param advanceTime   事件提醒时间{@link AdvanceTime}
     *                      (If you don't need to remind the incoming parameters -2)
     * @param rRule         事件重复规则  {@link RRuleConstant}  {@code null} if dose not need
     */
    public CalendarEvent(String title, String description, String eventLocation,
                         long start, long end, int advanceTime, String rRule) {
        this.title = title;
        this.description = description;
        this.eventLocation = eventLocation;
        this.start = start;
        this.end = end;
        this.advanceTime = advanceTime;
        this.rRule = rRule;
    }
 
    public int getAdvanceTime() {
        return advanceTime;
    }
 
    public void setAdvanceTime(int advanceTime) {
        this.advanceTime = advanceTime;
    }
 
    public long getId() {
        return id;
    }
 
    void setId(long id) {
        this.id = id;
    }
 
    public long getCalID() {
        return calID;
    }
 
    void setCalID(long calID) {
        this.calID = calID;
    }
 
    public String getTitle() {
        return title;
    }
 
    void setTitle(String title) {
        this.title = title;
    }
 
    public String getDescription() {
        return description;
    }
 
    void setDescription(String description) {
        this.description = description;
    }
 
    public String getEventLocation() {
        return eventLocation;
    }
 
    void setEventLocation(String eventLocation) {
        this.eventLocation = eventLocation;
    }
 
    public int getDisplayColor() {
        return displayColor;
    }
 
    void setDisplayColor(int displayColor) {
        this.displayColor = displayColor;
    }
 
    public int getStatus() {
        return status;
    }
 
    void setStatus(int status) {
        this.status = status;
    }
 
    public long getStart() {
        return start;
    }
 
    void setStart(long start) {
        this.start = start;
    }
 
    public long getEnd() {
        return end;
    }
 
    void setEnd(long end) {
        this.end = end;
    }
 
    public String getDuration() {
        return duration;
    }
 
    void setDuration(String duration) {
        this.duration = duration;
    }
 
    public String getEventTimeZone() {
        return eventTimeZone;
    }
 
    void setEventTimeZone(String eventTimeZone) {
        this.eventTimeZOne= eventTimeZone;
    }
 
    public String getEventEndTimeZone() {
        return eventEndTimeZone;
    }
 
    void setEventEndTimeZone(String eventEndTimeZone) {
        this.eventEndTimeZOne= eventEndTimeZone;
    }
 
    public int getAllDay() {
        return allDay;
    }
 
    void setAllDay(int allDay) {
        this.allDay = allDay;
    }
 
    public int getAccessLevel() {
        return accessLevel;
    }
 
    void setAccessLevel(int accessLevel) {
        this.accessLevel = accessLevel;
    }
 
    public int getAvailability() {
        return availability;
    }
 
    void setAvailability(int availability) {
        this.availability = availability;
    }
 
    public int getHasAlarm() {
        return hasAlarm;
    }
 
    void setHasAlarm(int hasAlarm) {
        this.hasAlarm = hasAlarm;
    }
 
    public String getRRule() {
        return rRule;
    }
 
    void setRRule(String rRule) {
        this.rRule = rRule;
    }
 
    public String getRDate() {
        return rDate;
    }
 
    void setRDate(String rDate) {
        this.rDate = rDate;
    }
 
    public int getHasAttendeeData() {
        return hasAttendeeData;
    }
 
    void setHasAttendeeData(int hasAttendeeData) {
        this.hasAttendeeData = hasAttendeeData;
    }
 
    public int getLastDate() {
        return lastDate;
    }
 
    void setLastDate(int lastDate) {
        this.lastDate = lastDate;
    }
 
    public String getOrganizer() {
        return organizer;
    }
 
    void setOrganizer(String organizer) {
        this.organizer = organizer;
    }
 
    public String getIsOrganizer() {
        return isOrganizer;
    }
 
    void setIsOrganizer(String isOrganizer) {
        this.isOrganizer = isOrganizer;
    }
 
    public List getReminders() {
        return reminders;
    }
 
    void setReminders(List reminders) {
        this.reminders = reminders;
    }
 
    @NonNull
    @Override
    public String toString() {
        return "CalendarEvent{" +
                "\n id=" + id +
                "\n calID=" + calID +
                "\n title='" + title + '\'' +
                "\n description='" + description + '\'' +
                "\n eventLocation='" + eventLocation + '\'' +
                "\n displayColor=" + displayColor +
                "\n status=" + status +
                "\n start=" + start +
                "\n end=" + end +
                "\n duration='" + duration + '\'' +
                "\n eventTimeZOne='" + eventTimeZone + '\'' +
                "\n eventEndTimeZOne='" + eventEndTimeZone + '\'' +
                "\n allDay=" + allDay +
                "\n accessLevel=" + accessLevel +
                "\n availability=" + availability +
                "\n hasAlarm=" + hasAlarm +
                "\n rRule='" + rRule + '\'' +
                "\n rDate='" + rDate + '\'' +
                "\n hasAttendeeData=" + hasAttendeeData +
                "\n lastDate=" + lastDate +
                "\n organizer='" + organizer + '\'' +
                "\n isOrganizer='" + isOrganizer + '\'' +
                "\n reminders=" + reminders +
                '}';
    }
 
    @Override
    public int hashCode() {
        return (int) (id * 37 + calID);
    }
 
    /**
     * 事件提醒
     */
    static class EventReminders {
 
        // ----------------------- 事件提醒属性 -----------------------
        private long reminderId;
        private long reminderEventID;
        private int reminderMinute;
        private int reminderMethod;
 
        public long getReminderId() {
            return reminderId;
        }
 
        void setReminderId(long reminderId) {
            this.reminderId = reminderId;
        }
 
        public long getReminderEventID() {
            return reminderEventID;
        }
 
        void setReminderEventID(long reminderEventID) {
            this.reminderEventID = reminderEventID;
        }
 
        public int getReminderMinute() {
            return reminderMinute;
        }
 
        void setReminderMinute(int reminderMinute) {
            this.reminderMinute = reminderMinute;
        }
 
        public int getReminderMethod() {
            return reminderMethod;
        }
 
        void setReminderMethod(int reminderMethod) {
            this.reminderMethod = reminderMethod;
        }
 
    }
 
}

public class Util {
 
    /**
     * 获取日历事件结束日期
     *
     * @param time time in ms
     */
    private static String getEndDate(long time) {
        Date date = new Date(time);
        SimpleDateFormat format = new SimpleDateFormat("yyyyMMdd", Locale.getDefault());
        return format.format(date);
    }
 
    /**
     * 获取最终日历事件重复规则
     *
     * @param time time in ms
     *             "T235959" {@linkplain com.kyle.calendarprovider.calendar.RRuleConstant #51}
     */
    public static String getFinalRRuleMode(long time) {
        return getEndDate(time) + "T235959Z";
    }
 
    /**
     * 格式化星期
     */
    private static String formatWeek(int week) {
        switch (week) {
            case 0:
                return "SU";
            case 1:
                return "MO";
            case 2:
                return "TU";
            case 3:
                return "WE";
            case 4:
                return "TH";
            case 5:
                return "FR";
            case 6:
                return "SA";
            default:
                return null;
        }
    }
 
    /**
     * 获取重复周
     *
     * @param time time in ms
     */
    public static String getWeekForDate(long time) {
        Date date = new Date(time);
        Calendar calendar = Calendar.getInstance();
        calendar.setTime(date);
        int week = calendar.get(Calendar.DAY_OF_WEEK) - 1;
        if (week <0) {
            week = 0;
        }
        return formatWeek(week);
    }
 
    /**
     * 获取指定时间段在一个月中的哪一天
     *
     * @param time time in ms
     */
    public static int getDayOfMonth(long time) {
        Date date = new Date(time);
        Calendar calendar = Calendar.getInstance();
        calendar.setTime(date);
        return calendar.get(Calendar.DAY_OF_MONTH);
    }
 
    /**
     * check null
     */
    public static void checkContextNull(Context context) {
        if (null == context) {
            throw new IllegalArgumentException("context can not be null");
        }
    }
 
}