Android Java jSON UTF-8 httpResponse Problems - php

Question

I've got a problem with german characters in utf-8. I work with a MySQL database from which I'll get my data with PHP. The php script converts the data into a json object and sent it to the application. The database contains doubles and strings. First the application send a string with the name of a topic. The php search in the db for the topic, convert the content into a json and send it to the application.
I tried to sent the data without characters like "ä,ü,ö" and it work. When I'm using this german characters it stop on line
HttpResponse response =httpClient.execute(httppost);
I don't know why and what I'm doing wrong.
Here is my application code:
public void getData(String data){
String topic = data; //Parameter for PHP
String result = "";
InputStream isr = null;
ArrayList<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(); //PHP
nameValuePairs.add(new BasicNameValuePair("topic", topic)); //PHP
try{
DefaultHttpClient httpClient = new DefaultHttpClient();
HttpPost httppost = new HttpPost("http://192.168.179.20:80/PHP/getData.php"); //PHP-Script on localhost
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs)); //PHP
HttpResponse response = httpClient.execute(httppost);
HttpEntity entity = response.getEntity();
isr = entity.getContent();
}
catch(Exception e){
Log.e("log_tag", "Error in http connection "+e.toString());
resultView.setText("Could not connect to database");
}
//convert response to string
try{
BufferedReader reader = new BufferedReader(new InputStreamReader(isr,"iso-8859-1"),8);
StringBuilder sb = new StringBuilder();
String line = null;
while ((line = reader.readLine()) != null) {
sb.append(line + "\n");
}
isr.close();
result=sb.toString();
}
catch(Exception e){
Log.e("log_tag", "Error converting result "+e.toString());
}
try {
String s = "";
JSONArray jArray = new JSONArray(result);
for(int i=0; i<jArray.length();i++){
JSONObject json = jArray.getJSONObject(i);
double Lat = json.getDouble("Latitude");
double Lng = json.getDouble("Longitude");
String Title = new String(json.getString("Ueberschrift").getBytes("ISO-8859-1"),"UTF-8");
String ShortText = new String(json.getString("Kurzbeschreibung").getBytes("ISO-8859-1"),"UTF-8");
String LongText = new String(json.getString("Inhalt").getBytes("ISO-8859-1"),"UTF-8");
String Thema = new String(json.getString("Thema").getBytes("ISO-8859-1"),"UTF-8");
String Datum = json.getString("Date");
String Url = new String(json.getString("Url").getBytes("ISO-8859-1"),"UTF-8");
s = s +
"Latitude: "+Lat+", "+"Longitude: "+Lng+"\n"+
"Thema: "+Thema+"\n"+
"Titel: "+Title+"\n"+
"Kurzbezeichnung: "+ShortText+"\n"+
"Inhalt: "+LongText+"\n\n";
}
resultView.setText(s);
} catch (Exception e) {
// TODO: handle exception
Log.e("log_tag", "Error Parsing Data "+e.toString());
}
}
Here a part of my php:
mysql_select_db("database", $con);
mysql_query('SET CHARACTER SET utf8');
$thema = $_REQUEST['topic'];
$result = mysql_query("SELECT * FROM locations WHERE Thema='$thema'") or die('Errant query:');
while($row = mysql_fetch_assoc($result))
{
$output[]=$row;
}
//$output = serialize($output);
//$output = iconv('ISO-8859-1', 'UTF-8', $output);
if (function_exists('json_encode'))
{
echo json_encode($output);
echo "JSON Error: ".json_last_error();
}
else { echo "json_encode() is not supported"; }
mysql_close($con);
The json looks like this:
[{"id":"5","Longitude":"11.0730833333333","Latitude":"49.4530833333333","Height":"10","Ueberschrift":"Henkersteg","Kurzbeschreibung":"Der Henkersteg, auch","Inhalt":"Stadtbefestigung\u00a0| Marthakirch","Thema":"D\u00fcrer","Thema_id":"3","Datetime":"15\/02\/2015","Url":"http:\/\/de.wikipedia.org\/wiki\/Henkersteg"}]JSON Error: 0
Thanks in advance for any help.

Answer 1

I changed the line
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
to
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs, HTTP.UTF_8));
I changed also the settings of my database. After changed them, I could display my string in the application, but unfortunately I get a "?" instead of a "ü".