Databases
StackOverflow2013
Postsdbo
POandroid, UTF8 - How do I ensure UTF8 is used for a shared preference
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POandroid, UTF8 - How do I ensure UTF8 is used for a shared preference
    primarykey
    data
    text
    <p>How do I ensure UTF8 is used for a shared preference menu? I have an android preferences menu that allows a user to set their name, amongst other things.</p> <p>I need to know how to convert the data stored in shared preferences into UTF8 format</p> <p>The preference menu is laid out in xml using utf8 encoding in a file called settings in the res/xml folder and looks like this:</p> <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt; &lt;PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android"&gt; &lt;EditTextPreference android:key="@string/name_key" android:title="@string/hof_name_title" android:summary="@string/hof_name_summary" android:defaultValue="Anonymous" /&gt; &lt;CheckBoxPreference android:key="@string/new_game_preference_key" android:title="@string/new_game_preference_title" android:summary="@string/new_game_preference_summary" android:defaultValue="false" /&gt; &lt;/PreferenceScreen&gt; </code></pre> <p>The class that handles this is</p> <pre><code>public class PrefsActivity extends PreferenceActivity implements OnSharedPreferenceChangeListener{ @Override protected void onCreate(Bundle savedInstanceState) { requestWindowFeature(Window.FEATURE_NO_TITLE); getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN); super.onCreate(savedInstanceState); addPreferencesFromResource(R.xml.settings); } @Override protected void onPause() { super.onPause(); // Unregister the listener whenever a key changes getPreferenceScreen().getSharedPreferences() .unregisterOnSharedPreferenceChangeListener(this); } @Override protected void onResume() { super.onResume(); // Set up a listener whenever a key changes getPreferenceScreen().getSharedPreferences() .registerOnSharedPreferenceChangeListener(this); } @Override public void onSharedPreferenceChanged(SharedPreferences sharedPreferences, String key) { // Util.log_debug_message("@@@@ Changed prefrence key = " + key); if (key.equalsIgnoreCase(getString(R.string.name_key))){ update_webserver(); }else if (key.equalsIgnoreCase(getString(R.string.new_game_preference_key))){ update_webserver(); } } protected void update_webserver(){ Intent webServerReg = new Intent(this, RegService.class); webServerReg.putExtra(Config.C2DM_REG_ID_EXTRA, C2DMessaging.getRegistrationId(this)); startService(webServerReg); } } </code></pre> <p>I assumed that setting <code>&lt;?xml version="1.0" encoding="utf-8"?&gt;</code> would ensure that text would be encoded in UTF8 format but this is not always the case. I am getting values in all sorts of formats. Some examples</p> <blockquote> <p>"\nFe\xF1a", "L\xFAcia", "$'\xE5 \xEE'",</p> </blockquote> <p>or</p> <blockquote> <p>":-$B-)O:-):-P=-OB-):-D:-Q:-X:-!:-|\n:'(:-*XDo_O:-X:-C:-X:O:-X=-O;-):-):-);-):-D:OX-(o_O:-V:-@:-V:-X:-Do_O::-C \xBF\xA1\xA1\xAB\xBB\xAE\xA9^\xA5\xA5?[\xA2}?\xA2\xA2\xA5\xA3?$\xBF\xA1\xAE\xA7>&lt;[\xA3~?=~~<code>\xB0]\xA3?\xA7\xA1\\\xAB\xBB\xAE^``]]||||}{_|</code>]|||\xB0\xB0?"</p> </blockquote> <p>Yes that is one loooong set of rubish in the last example.</p> <p>The problems I have start when trying to send the nmes as a json HTTP POST or PUT request to my webserver using the following code</p> <pre><code>public void update(String regId) throws AuthenticationException { JSONObject mu_to_send = createJsonToPost(regId, false); HttpResponse response; try { response = HttpRequest.httpPutJSONObject(this, Config.UPDATE_USER_URL, mu_to_send); int responseCode = response.getStatusLine().getStatusCode(); String responseJson; try { responseJson = EntityUtils.toString(response.getEntity()); String msg = ""; if (responseCode == 201) { // mobile_user = new // JSONObject(responseJson).getJSONObject("mobile_user"); // Broadcast.sendBroadcast(this, // ResponseReceiver.ACTION_RESP, // Intent.CATEGORY_DEFAULT, Config.C2DM_MESSAGE_EXTRA, // Config.BROADCAST_WEBSERVER_USER_CREATED); } else { msg = "Failed to register with server! HTTP response code = " + responseCode; } } catch (ParseException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } } catch (ClientProtocolException e1) { // TODO Auto-generated catch block e1.printStackTrace(); } catch (IOException e1) { // TODO Auto-generated catch block e1.printStackTrace(); } } public JSONObject createJsonToPost(String regId, boolean set_password) { JSONObject holder = new JSONObject(); JSONObject data = new JSONObject(); try { data.put("auth", regId); data.put("name", C2DMessaging.getName(this)); data.put("receive_new_game_notification", C2DMessaging.getGameStartedNotificationPreference(this)); holder.put("mobile_user", data); } catch (JSONException e) { // TODO Auto-generated catch block e.printStackTrace(); } return holder; } public static HttpResponse httpPutJSONObject(Context context, String url, JSONObject data) throws ClientProtocolException, IOException, AuthenticationException { DefaultHttpClient httpclient = getHttpClient(context); HttpPut httpput = new HttpPut(url); httpput.addHeader("User-Agent", Config.USER_AGENT); httpput.addHeader("Accept", "application/json"); httpput.addHeader("Content-type", "application/json"); httpput.addHeader(new BasicScheme().authenticate( getCredentials(context), httpput)); StringEntity se = new StringEntity(data.toString()); httpput.setEntity(se); return httpclient.execute(httpput); } </code></pre> <p>This causes all sorts of issues on my web server which expects valid JSON (i.e. UTF8) as JSON should be sent encoded in UTF8 in the first place.</p> <p>So</p> <p>1) Why doesn't <code>&lt;?xml version="1.0" encoding="utf-8"?&gt;</code> actually set UTF8 encoding? when used in the layout?</p> <p>2) How best to ensure that I always get valid UTF8 format characters sent to my web server? Should this be handled by the put request or by the code that saves to the shared preference or or by the code that populates the json object or perhaps a combination of the above ? or something else?</p> <p>This is a follow on from this RoR question <a href="https://stackoverflow.com/questions/9167468/rails-3-how-to-handle-pg-error-incomplete-multibyte-character">Rails 3 - How to handle PG Error incomplete multibyte character</a></p>
    singulars
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. USCommunity
    1. USjamesc
    plurals
    1. PL
      singulars
      1. LTLinked
    1. PL
      singulars
      1. LTLinked
    2. PL
      singulars
      1. LTLinked
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    1. VO
      singulars
      1. POandroid, UTF8 - How do I ensure UTF8 is used for a shared preference
      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
      singulars
      1. POandroid, UTF8 - How do I ensure UTF8 is used for a shared preference
      1. USMarcin Milejski
      1. VTFavorite
    3. VO
      singulars
      1. POandroid, UTF8 - How do I ensure UTF8 is used for a shared preference
      1. This table or related slice is empty.
      1. VTApproveEditSuggestion
    1. COJust FYI - I believe that setting this: "<?xml version="1.0" encoding='utf-8'?>" is to instruct any xml parser that the layout file contents are encoded in utf-8. In other words, it is entirely a property of the xml layout file itself and I do not believe it has any impact on Android's behavior when using that layout...
      singulars
      1. POandroid, UTF8 - How do I ensure UTF8 is used for a shared preference
      1. USMike Repass
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload