[fpc-pascal] android JNI JString to String

[herux]

I have a strange problem, I pass data from the android String via JNI. pass
data from FreePascal wideString successfully using the following code

NewString: function (Env: PJNIEnv; const Unicode: PJChar; Len: JSize):
JString; cdecl; 
GetStringChars:function(Env:PJNIEnv;Str:JString;IsCopy:PJBoolean):PJChar;
cdecl;

function JNI_WideStringToJString(Env: PJNIEnv; const WStr: WideString):
JString;
begin
  Result := Env^.NewString(Env, Pointer(WStr), Length(WStr));
end;

but when passing data JString to widestring, using this code :

function JNI_JStringToWideString(Env: PJNIEnv; JStr: JString): WideString;
var
  IsCopy: JBoolean;
  Chars: PJChar;
begin
  if (JStr = nil) then begin
    Result := '';
    Exit;
  end;

  Chars := Env^.GetStringChars(Env, JStr, IsCopy);
  if (Chars = nil) then begin
    Result := ''
  end else begin
    Result := WideString(Chars);
    Env^.ReleaseStringChars(Env, JStr, Chars);
  end;
end;

return only 1 character leading. 
if anyone has ever experienced ? or there's something wrong with JNI header
?

thanks


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