Delphi XE8安卓下汉字转Gb2312 urlencode代码(原创)

Delphi XE8安卓下汉字转Gb2312 urlencode代码

在Android下汉字转GB2312 urlencode时候，如果使用下边代码：

Edit2.Text :=Tnetencoding.url.EncodeBytesToString( Tencoding.GetEncoding(936).getbytes('提交'));//会提示错误No mapping for the Unicode character exists in the target multi-byte code page.

Edit2.Text :=httpencode('提交');// urlencode结果为  %E6%8F%90%E4%BA%A4 ，此为UTF8转换结果

Edit2.Text :=Tnetencoding.URL.Encode('提交'); //urlencode结果同样为%E6%8F%90%E4%BA%A4

那么问题来了，怎么在Android显示GB2312的转换结果%cc%e1%bd%bb呢？

参考代码

function MyUrlEncode(const input: string): string; // 汉字转Gb2312 urlencode
var
  S: string;
  Stream: TStringStream;
  B: Byte;
begin
  Result := '';
  S := '';
  try
    Stream := TStringStream.Create(input, TEncoding.GetEncoding(936));
    for B in Stream.Bytes do
      S := Format('%s%%%.2x', [S, B]);
  finally
    Stream.Free;
  end;
  Result := S;
end;
procedure TForm1.Button1Click(Sender: TObject);
begin
  Edit1.Text := '提交';
  Edit2.Text := MyUrlEncode(Edit1.Text); // 结果  %cc%e1%bd%bb
end;