Realm数据库操作，版本更新（数据迁移）及自定义使用

package com.xintu.realm.util; import android.annotation.SuppressLint; import java.io.File; import java.io.UnsupportedEncodingException; import java.math.BigDecimal; import java.net.URLDecoder; import java.net.URLEncoder; import java.text.ParseException; import java.text.SimpleDateFormat; import java.util.ArrayList; import java.util.Calendar; import java.util.Collection; import java.util.Date; import java.util.GregorianCalendar; import java.util.HashMap; import java.util.HashSet; import java.util.Iterator; import java.util.List; import java.util.Map; import java.util.Random; import java.util.Set; import java.util.StringTokenizer; import java.util.regex.Matcher; import java.util.regex.Pattern; import java.util.regex.PatternSyntaxException; /** * 字符串处理工具类 * * @author fanjf */ @SuppressLint ( { "NewApi", "DefaultLocale", "SimpleDateFormat" } ) public class StringUtil { /******************************************* * 身份证验证 start **************************************************/ final static Map< Integer, String > zoneNum = new HashMap< Integer, String >(); // 第18位校检码 final static int[] PARITYBIT = { '1', '0', 'X', '9', '8', '7', '6', '5', '4', '3', '2' }; //每位加权因子 final static int[] POWER_LIST = { 7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2 }; /** * Returns a random String of numbers and letters of the specified length. * The method uses the Random class that is built-in to Java which is * suitable for low to medium grade security uses. This means that the * output is only pseudo random, i.e., each number is mathematically * generated so is not truly random. * <p> * <p> * For every character in the returned String, there is an equal chance that * it will be a letter or number. If a letter, there is an equal chance that * it will be lower or upper case. * <p> * <p> * The specified length must be at least one. If not, the method will return * null. * * @param length the desired length of the random String to return. * @return a random String of numbers and letters of the specified length. */ private static Random randGen = null; private static Object initLock = new Object(); private static char[] numbersAndLetters = null; static { zoneNum.put( 11, "北京" ); zoneNum.put( 12, "天津" ); zoneNum.put( 13, "河北" ); zoneNum.put( 14, "山西" ); zoneNum.put( 15, "内蒙古" ); zoneNum.put( 21, "辽宁" ); zoneNum.put( 22, "吉林" ); zoneNum.put( 23, "黑龙江" ); zoneNum.put( 31, "上海" ); zoneNum.put( 32, "江苏" ); zoneNum.put( 33, "浙江" ); zoneNum.put( 34, "安徽" ); zoneNum.put( 35, "福建" ); zoneNum.put( 36, "江西" ); zoneNum.put( 37, "山东" ); zoneNum.put( 41, "河南" ); zoneNum.put( 42, "湖北" ); zoneNum.put( 43, "湖南" ); zoneNum.put( 44, "广东" ); zoneNum.put( 45, "广西" ); zoneNum.put( 46, "海南" ); zoneNum.put( 50, "重庆" ); zoneNum.put( 51, "四川" ); zoneNum.put( 52, "贵州" ); zoneNum.put( 53, "云南" ); zoneNum.put( 54, "西藏" ); zoneNum.put( 61, "陕西" ); zoneNum.put( 62, "甘肃" ); zoneNum.put( 63, "青海" ); zoneNum.put( 64, "宁夏" ); zoneNum.put( 65, "新疆" ); zoneNum.put( 71, "台湾" ); zoneNum.put( 81, "香港" ); zoneNum.put( 82, "澳门" ); zoneNum.put( 91, "外国" ); } /** * 编码方式转成utf-8 * * @param str * @return */ public static String urlCode ( String str ) { String ENCODING = "utf-8"; String strCode = str; try { strCode = URLEncoder.encode( str, ENCODING ); strCode = strCode.replace( "+", "%20" ); } catch ( UnsupportedEncodingException e ) { e.printStackTrace(); } return strCode; } /** * 根据秒数得到“00:00:00”格式的时间 * * @param time * @return */ public static String secToTime ( int time ) { String timeStr = null; int day = 0; int hour = 0; int minute = 0; int second = 0; if ( time <= 0 ) return "00:00"; else { minute = time / 60; if ( minute < 60 ) { second = time % 60; timeStr = unitFormat( minute ) + ":" + unitFormat( second ); } else { hour = minute / 60; if ( hour > 24 ) { day = hour / 24; minute = minute % 60; second = time - hour * 3600 - minute * 60; timeStr = day + "天" + unitFormat( hour / 24 ) + ":" + unitFormat( minute ) + ":" + unitFormat( second ); return timeStr; } minute = minute % 60; second = time - hour * 3600 - minute * 60; timeStr = unitFormat( hour ) + ":" + unitFormat( minute ) + ":" + unitFormat( second ); } } return timeStr; } public static String unitFormat ( int i ) { String retStr = null; if ( i >= 0 && i < 10 ) retStr = "0" + Integer.toString( i ); else retStr = "" + i; return retStr; } /** * 区分两个String * * @param value * @param kw * @return */ public static boolean isHad ( String value, String kw ) { if ( value.indexOf( kw ) != -1 ) { return true; } else { return false; } } public static boolean isTel ( String tel ) { String telExp = "^(010|02\\d|0[3-9]\\d{2})?\\d{6,8}$"; Pattern p = Pattern.compile( telExp ); Matcher m = p.matcher( tel ); return m.matches(); } /** * 按长度分割字符串 * * @param content * @param len * @return */ public static String[] split ( String content, int len ) { if ( content == null || content.equals( "" ) ) { return null; } int len2 = content.length(); if ( len2 <= len ) { return new String[]{ content }; } else { int i = len2 / len + 1; // System.out.println( "i:" + i ); String[] strA = new String[i]; int j = 0; int begin = 0; int end = 0; while ( j < i ) { begin = j * len; end = ( j + 1 ) * len; if ( end > len2 ) end = len2; strA[j] = content.substring( begin, end ); // System.out.println(strA[j]+"<br/>"); j = j + 1; } return strA; } } public static boolean emailFormat ( String email ) { boolean tag = true; final String pattern1 = "^([a-z0-9A-Z]+[-|_|\\.]?)+[a-z0-9A-Z]@([a-z0-9A-Z]+(-[a-z0-9A-Z]+)?\\.)+[a-zA-Z]{2,}$"; final Pattern pattern = Pattern.compile( pattern1 ); final Matcher mat = pattern.matcher( email ); if ( !mat.find() ) { tag = false; } return tag; } /** * 验证是不是EMAIL * * @param email * @return */ public static boolean isEmail ( String email ) { boolean retval = false; if ( StringUtil.empty( email ) ) return retval; String check = "^([a-z0-9A-Z]+[-|_|\\.]?)+[a-z0-9A-Z]@([a-z0-9A-Z]+(-[a-z0-9A-Z]+)?\\.)+[a-zA-Z]{2,}$"; Pattern regex = Pattern.compile( check ); Matcher matcher = regex.matcher( email ); retval = matcher.matches(); return retval; } /** *