android实现汉字转拼音功能 带多音字识别

android 汉字转拼音带多音字识别功能，供大家参考，具体内容如下

问题来源

在做地名按首字母排序的时候出现了这样一个bug。长沙会被翻译拼音成zhangsha，重庆会被翻译拼音成zhong qing。于是排序出了问题。

汉字转拼音库和多音字识别库
1.多音字对应的词汇库
2.文字的二进制大小对应的拼音库

关键代码

1.我在这里首先将要转化的文字转化成对应的”gb2312”编码。汉字转化成二进制编码一般占两个字节，如果一个字节返回字符，如果是两个字节算一下偏移量。代码如下

 /** * 汉字转成ascii码 * * @param chs * @return */
  private int getchsascii(string chs) {
   int asc = 0;
   try {
    byte[] bytes = chs.getbytes("gb2312");
    if (bytes == null || bytes.length > 2 || bytes.length <= 0) {
     throw new runtimeexception("illegal resource string");
    }
    if (bytes.length == 1) {
     asc = bytes[0];
    }
    if (bytes.length == 2) {
     int hightbyte = 256 + bytes[0];
     int lowbyte = 256 + bytes[1];
     asc = (256 * hightbyte + lowbyte) - 256 * 256;
    }
   } catch (exception e) {
    system.out.println("error:chinesespelling.class-getchsascii(string chs)" + e);
   }
   return asc;
  }

2.将单个汉字获取的拼音再和多音字库的hashmap进行比较，代码如下：

public string getsellingwithpolyphone(string chs){
   if(polyphonemap != null && polyphonemap.isempty()){
    polyphonemap = initdictionary();
   }

   string key, value, resultpy = null;
   buffer = new stringbuilder();
   for (int i = 0; i < chs.length(); i++) {
    key = chs.substring(i, i + 1);
    if (key.getbytes().length >= 2) {
     value = (string) convert(key);
     if (value == null) {
      value = "unknown";
     }
    } else {
     value = key;
    }
    resultpy = value;

    string left = null;
    if(i>=1 && i+1 <= chs.length()){
     left = chs.substring(i-1,i+1);
     if(polyphonemap.containskey(value) && polyphonemap.get(value).contains(left)){
      resultpy = value;
     }
    }
//    if(chs.contains("重庆")){
     string right = null; //向右多取一个字,例如 [长]沙
     if(i<=chs.length()-2){
      right = chs.substring(i,i+2);
      if(polyphonemap.containskey(right)){
       resultpy = polyphonemap.get(right);
      }
     }
//    }

    string middle = null; //左右各多取一个字,例如 龙[爪]槐
    if(i>=1 && i+2<=chs.length()){
     middle = chs.substring(i-1,i+2);
     if(polyphonemap.containskey(value) && polyphonemap.get(value).contains(middle)){
      resultpy = value;
     }
    }

    string left3 = null; //向左多取2个字,如 芈月[传],列车长
    if(i>=2 && i+1<=chs.length()){
     left3 = chs.substring(i-2,i+1);
     if(polyphonemap.containskey(value) && polyphonemap.get(value).contains(left3)){
      resultpy = value;
     }
    }

    string right3 = null; //向右多取2个字,如 [长]孙无忌
    if(i<=chs.length()-3){
     right3 = chs.substring(i,i+3);
     if(polyphonemap.containskey(value) && polyphonemap.get(value).contains(right3)){
      resultpy = value;
     }
    }

    buffer.append(resultpy);
   }
   return buffer.tostring();
  }

3.将asserts文件内容解析生成hashmap列表.

 public hashmap<string, string> initdictionary(){
  string filename = "py4j.dic";
  inputstreamreader inputreader = null;
  bufferedreader bufferedreader = null;
  hashmap<string, string> polyphonemap = new hashmap<string, string>();
  try{
   inputreader = new inputstreamreader(myapplication.mcontext.getresources().getassets().open(filename),"utf-8");
   bufferedreader = new bufferedreader(inputreader);
   string line = null;
   while((line = bufferedreader.readline()) != null){
    string[] arr = line.split(pinyin_separator);
    if(isnotempty(arr[1])){
     string[] dyzs = arr[1].split(word_separator);
     for(string dyz: dyzs){
      if(isnotempty(dyz)){
       polyphonemap.put(dyz.trim(),arr[0]);
      }
     }
    }
   }
  }catch(exception e){
   e.printstacktrace();
  }finally{
   if(inputreader != null){
    try {
     inputreader.close();
    } catch (ioexception e) {
     // todo auto-generated catch block
     e.printstacktrace();
    }
   }
   if(bufferedreader != null){
    try {
     bufferedreader.close();
    } catch (ioexception e) {
     // todo auto-generated catch block
     e.printstacktrace();
    }
   }
  }
  return polyphonemap;
 }

github源码下载:https://github.com/loveburce/chinesepolyphone.git

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。