Android 获取最近几天的日历日程

首先获取日历权限
 

 <uses-permission android:name="android.permission.READ_CALENDAR" />
 <uses-permission android:name="android.permission.WRITE_CALENDAR" />

String[] permissions = new String[] { "android.permission.READ_CALENDAR"};
 ActivityCompat.requestPermissions(activity, permissions, 0);

获取最近几天的日历日程，下面的是最近15天；

这个方法会获取指定时间段里每天的日程事件；
Cursor eventCursor = CalendarContract.Instances.query(context.getContentResolver() , null , currentTime , afterDayTime);

   // 一天总共的毫秒数
    private long onedayMS = 1000*60*60*24;

    /**
     * 添加从当天开始获取之后几天的日历日程 
     * @param context
     * @return
     */
    public static ArrayList<CalenderDataStruct> GetCalender15Day(Context context){

        String startTime = "";
        String endTime = "";
        String eventTitle = "";
        String description = "";
        String location = "";


       String currentTime = System.currentTimeMillis();
       String afterDayTime = 15 * onedayMS +currentTime;

        Cursor eventCursor = CalendarContract.Instances.query(context.getContentResolver() , null , currentTime , afterDayTime);

        ArrayList<CalenderDataStruct> arr=new ArrayList();
        while (eventCursor != null && eventCursor.moveToNext()){
                eventTitle = eventCursor.getString(eventCursor.getColumnIndex(CalendarContract.Instances.TITLE));
                description = eventCursor.getString(eventCursor.getColumnIndex(CalendarContract.Instances.DESCRIPTION));
                location = eventCursor.getString(eventCursor.getColumnIndex(CalendarContract.Instances.EVENT_LOCATION));
                startTime =eventCursor.getString(eventCursor.getColumnIndex(CalendarContract.Instances.BEGIN));
                endTime = eventCursor.getString(eventCursor.getColumnIndex(CalendarContract.Instances.END));
                CalenderDataStruct item=new CalenderDataStruct(eventTitle, timeStamp2Date(Long.parseLong(startTime)), timeStamp2Date(Long.parseLong(endTime)),description, location,"");
                arr.add(item);

        }

        return arr;
    }


  /**
     * 时间戳转换为字符串
     * @param time:时间戳
     * @return
     */
    private static String timeStamp2Date(long time) {
        String format = "yyyy-MM-dd HH:mm:ss";
        SimpleDateFormat sdf = new SimpleDateFormat(format);
        return sdf.format(new Date(time));
    }

CalendarContract.Instances.TITLE  //事件标题

CalendarContract.Instances.DESCRIPTION //事件详情

CalendarContract.Instances.EVENT_LOCATION 事件位置信息

CalendarContract.Instances.DTSTART //事件开始时间

CalendarContract.Instances.DTEND //事件结束时间

CalendarContract.Instances.BEGIN //事件提醒开始时间 - （The beginning time of the instance, in UTC milliseconds.）

CalendarContract.Instances.END //事件提醒开始时间 - （The ending time of the instance, in UTC milliseconds.）

如果需要获取提醒时间（10分钟前提醒、1小时前提醒），则需要用日程事件的ID去查询；使用这个 CalendarContract.Reminders.query 方法查询；

String[] projection = {CalendarContract.Reminders.MINUTES , CalendarContract.Reminders.METHOD};
              Cursor remindersCursor = CalendarContract.Reminders.query(context.getContentResolver() , eId , projection);
              String minutes = "";
              String method = "";
                while (remindersCursor != null && remindersCursor.moveToNext()){
                    minutes += remindersCursor.getString(remindersCursor.getColumnIndex(CalendarContract.Reminders.MINUTES)) + " , ";
                    method += remindersCursor.getString(remindersCursor.getColumnIndex(CalendarContract.Reminders.METHOD)) + " , ";
                }

全部的--：

    /**
     * 添加从当天开始获取之后几天的日历日程
     * @param context
     * @return
     */
    @SuppressLint("Range")
    public static ArrayList<CalenderDataStruct> GetCalender14(Context context){

        String startTime = "";
        String endTime = "";
        String eventTitle = "";
        String description = "";
        String location = "";


        currentTime = System.currentTimeMillis();
        afterDayTime = 14 * onedayMS +currentTime;


        Cursor eventCursor = CalendarContract.Instances.query(context.getContentResolver() , null , currentTime , afterDayTime);

        ArrayList<CalenderDataStruct> arr=new ArrayList();
        while (eventCursor != null && eventCursor.moveToNext()){
                eventTitle = eventCursor.getString(eventCursor.getColumnIndex(CalendarContract.Instances.TITLE));
                description = eventCursor.getString(eventCursor.getColumnIndex(CalendarContract.Instances.DESCRIPTION));
                location = eventCursor.getString(eventCursor.getColumnIndex(CalendarContract.Instances.EVENT_LOCATION));
                startTime =eventCursor.getString(eventCursor.getColumnIndex(CalendarContract.Instances.BEGIN));
                endTime = eventCursor.getString(eventCursor.getColumnIndex(CalendarContract.Instances.END));

               long eId = eventCursor.getLong(eventCursor.getColumnIndex(CalendarContract.Instances.EVENT_ID));
               String[] projection = {CalendarContract.Reminders.MINUTES , CalendarContract.Reminders.METHOD};
              Cursor remindersCursor = CalendarContract.Reminders.query(context.getContentResolver() , eId , projection);
              String minutes = "";
              String method = "";
                while (remindersCursor != null && remindersCursor.moveToNext()){
                    minutes += remindersCursor.getString(remindersCursor.getColumnIndex(CalendarContract.Reminders.MINUTES)) + " , ";
                    method += remindersCursor.getString(remindersCursor.getColumnIndex(CalendarContract.Reminders.METHOD)) + " , ";
                }

                CalenderDataStruct item = new CalenderDataStruct(eventTitle, timeStamp2Date(Long.parseLong(startTime)), timeStamp2Date(Long.parseLong(endTime)),description, location,minutes);
                arr.add(item);
        }


        for (int i = 0; i < eventCursor.getColumnNames().length; i++) {
            Log.i(TAG, "GetCalender---: " +eventCursor.getColumnNames()[i] );
        }

        Log.i(TAG, "GetCalender: " +arr.size() );
        Log.i(TAG, "GetCalender Json: " +(new Gson().toJson(arr)));
        return arr;
    }