android:ip地址转16进制

这个方法是先将ip转换为十进制，再转换为16进制，好处是不会缺少

  public static String ipTohex(String ipString){//String ipString = "224.0.1.10";Long[] ip = new Long[4];int pos1= ipString.indexOf(".");int pos2= ipString.indexOf(".",pos1+1);int pos3= ipString.indexOf(".",pos2+1);ip[0] = Long.parseLong(ipString.substring(0 , pos1));ip[1] = Long.parseLong(ipString.substring(pos1+1 , pos2));ip[2] = Long.parseLong(ipString.substring(pos2+1 , pos3));ip[3] = Long.parseLong(ipString.substring(pos3+1));String Ip = Integer.toHexString((int) ((ip[0]<<24)+(ip[1]<<16)+(ip[2]<<8)+ip[3]));return Ip;}

输入ip：224.0.1.10

输出结果：e000010a