Android 过滤 html标签

/**
 * 
 * @param filterString 过滤字符串
 * @param length 字符串长度
 * @return
 */

    public static String tongXinFilterString(String filterString, int length) {
      if (filterString == null || filterString.trim().equals("")) {
         return "";
      }
      String filter = "";
      String str = filterString.replaceAll("//&[a-zA-Z]{1,10};", "").replaceAll("<[^>]*>", "");
      str = str.replaceAll("[(/>)<]", "");
      str = str.replaceAll("[a-zA-Z]", "");//字母
//    str = str.replaceAll("[0-9]","");//数字

      int len = str.length();
      if (len <= length) {
         return str;
      } else {
         str = str.substring(0, length);
      }
      return str;
   }

//会有 css样式过滤不了，判断从首个汉字开始截取—到最后
char[]  charValue= filter.toCharArray();
for(int i=0;i<charValue.length;i++){
    if(isChinese(charValue[i])){
        filter=filter.substring(i);
        break;
    }
}


/**
 * 判断是否是字符串
 * @param a
 * @return
 */
public static boolean isChinese(char a) {
    return String.valueOf(a).matches("[\u4E00-\u9FA5]"); //利用正则表达式，经测试可以区分开中文符号
}