ksoap2 xmlPullParserException unterminated entity ref

Question

I have a user email me yesterday that he is having a problem with my application so i started debugging with him and had him sent me the log of the phone and he is getting a

Answer 1

Unterminated entity this error occurs when

1... Error in response string may be some entity are not closed.

     first 
    second             <-----  missing here

2... You are getting some xml character in xml file

 like      & { } � ...

you need to replace all & with & amp; see this answer

...
String str = writer.toString();
str = str.replaceAll("&","&");
str = str.replaceAll("?","?");
return str;