//读取日历事件
    public static void getCalendarInfo(Activity activity,String tag){
        String[] projection = new String[]{CalendarContract.Events._ID,CalendarContract.Events.TITLE};
        ContentResolver cr = activity.getContentResolver();
        Cursor cursor = cr.query(CalendarContract.Events.CONTENT_URI, projection, null, null, null);
        int idIndex = cursor.getColumnIndexOrThrow(CalendarContract.Events._ID);
        Log.d(tag, cursor.getCount()+"");
        int titleIndex = cursor.getColumnIndexOrThrow(CalendarContract.Events.TITLE);
        while (cursor.moveToNext()) {
            String id = cursor.getString(idIndex);
            String title = cursor.getString(titleIndex);
            Log.d(tag, id+":"+title);
        }
        cursor.close();
    }
    //插入事件
    public static void addCalendarEvent(Activity activity,String tag){
        Intent intent = new Intent(Intent.ACTION_INSERT,CalendarContract.Events.CONTENT_URI);
        Log.d(tag, CalendarContract.Events.CONTENT_URI.toString());
        intent.putExtra(CalendarContract.Events.TITLE, "Launch");
        intent.putExtra(CalendarContract.Events.DESCRIPTION, "Launch,Android app");
        intent.putExtra(CalendarContract.Events.EVENT_LOCATION, "baidu.com");
        Calendar calendar = Calendar.getInstance();
        calendar.setTime(new Date());
        intent.putExtra(CalendarContract.EXTRA_EVENT_BEGIN_TIME, calendar.getTimeInMillis());
        intent.putExtra(CalendarContract.EXTRA_EVENT_ALL_DAY, true);
        activity.startActivity(intent);
    }
    //编辑日历事件
    public static void editCalendarEvent(Activity activity,String tag){
        long rowId = 1;
        Uri editUri = ContentUris.withAppendedId(CalendarContract.Events.CONTENT_URI,rowId);
        Log.d(tag, CalendarContract.Events.CONTENT_URI.toString());
        Intent intent = new Intent(Intent.ACTION_EDIT,editUri);
        intent.putExtra(CalendarContract.Events.EVENT_LOCATION, "NJ");
        Calendar calendar = Calendar.getInstance();
        calendar.set(2015, 2, 17, 12, 1, 1);
        intent.putExtra(CalendarContract.EXTRA_EVENT_BEGIN_TIME, calendar.getTimeInMillis());
        intent.putExtra(CalendarContract.EXTRA_EVENT_ALL_DAY, true);
        activity.startActivity(intent);
    }
    //查看日历
    public static void viewCalendar(Activity activity,String tag){
        Calendar calendar = Calendar.getInstance();
        calendar.set(2015, 2, 17, 12, 1, 1);
        Uri uri = Uri.parse("content://com.android.calendar/time/"+calendar.getTimeInMillis());
        Intent intent = new Intent(Intent.ACTION_VIEW,uri);
        activity.startActivity(intent);
    }