remove translation auto-detect hack, it is too hacky

The hack that goes through and checks whether a language is present in
the APK seems to cause random strings to switch to English when the
app is running.  So this removes that hack, and instead switches the
Languages menu to a hard-coded list.  Languages that are not present
or close to complete were removed from the old list.

closes #943
closes #1010

app/src/main/java/org/fdroid/fdroid/FDroidApp.java

@@ -214,7 +214,6 @@ public class FDroidApp extends Application {
                     .build());
         }
         Preferences.setup(this);
-        Languages.setup(getClass(), R.string.pref_language_default);
         Languages.setLanguage(this);
 
         ACRA.init(this);

app/src/main/java/org/fdroid/fdroid/Languages.java

@@ -4,13 +4,12 @@ import android.annotation.TargetApi;
 import android.app.Activity;
 import android.content.ContextWrapper;
 import android.content.Intent;
-import android.content.res.AssetManager;
 import android.content.res.Configuration;
 import android.content.res.Resources;
 import android.os.Build;
 import android.text.TextUtils;
-import android.util.DisplayMetrics;
 
+import java.util.Arrays;
 import java.util.Collections;
 import java.util.LinkedHashSet;
 import java.util.Locale;
@@ -26,12 +25,9 @@ public final class Languages {
     private static final Locale DEFAULT_LOCALE;
     private static final Locale TIBETAN = new Locale("bo");
     private static final Locale CHINESE_HONG_KONG = new Locale("zh", "HK");
-    private static final String DEFAULT_STRING = "System Default";
 
     private static Locale locale;
     private static Languages singleton;
-    private static Class<?> clazz;
-    private static int resId;
     private static Map<String, String> tmpMap = new TreeMap<>();
     private static Map<String, String> nameMap;
 
@@ -40,23 +36,8 @@ public final class Languages {
     }
 
     private Languages(Activity activity) {
-        AssetManager assets = activity.getAssets();
-        Configuration config = activity.getResources().getConfiguration();
-        // Resources() requires DisplayMetrics, but they are only needed for drawables
-        DisplayMetrics ignored = new DisplayMetrics();
-        activity.getWindowManager().getDefaultDisplay().getMetrics(ignored);
-        Resources resources;
         Set<Locale> localeSet = new LinkedHashSet<>();
-        Locale currentLocale = config.locale;
+        localeSet.addAll(Arrays.asList(LOCALES_TO_TEST));
-        for (Locale locale : LOCALES_TO_TEST) {
-            config.locale = locale;
-            resources = new Resources(assets, ignored, config);
-            if (!TextUtils.equals(DEFAULT_STRING, resources.getString(resId))
-                    || locale.equals(Locale.ENGLISH)) {
-                localeSet.add(locale);
-            }
-        }
-        config.locale = currentLocale;
 
         for (Locale locale : localeSet) {
             if (locale.equals(TIBETAN)) {
@@ -74,39 +55,13 @@ public final class Languages {
         }
 
         // remove the current system language from the menu
-        tmpMap.remove(currentLocale.getLanguage());
+        tmpMap.remove(Locale.getDefault().getLanguage());
 
         /* SYSTEM_DEFAULT is a fake one for displaying in a chooser menu. */
-        tmpMap.put(USE_SYSTEM_DEFAULT, activity.getString(resId));
+        tmpMap.put(USE_SYSTEM_DEFAULT, activity.getString(R.string.pref_language_default));
         nameMap = Collections.unmodifiableMap(tmpMap);
     }
 
-    /**
-     * Get the instance of {@link Languages} to work with, providing the
-     * {@link Activity} that is will be working as part of, as well as the
-     * {@code resId} that has the exact string "Use System Default",
-     * i.e. {@code R.string.use_system_default}.
-     * <p/>
-     * That string resource {@code resId} is also used to find the supported
-     * translations: if an included translation has a translated string that
-     * matches that {@code resId}, then that language will be included as a
-     * supported language.
-     *
-     * @param clazz the {@link Class} of the default {@code Activity},
-     *              usually the main {@code Activity} from where the
-     *              Settings is launched from.
-     * @param resId the string resource ID to for the string "System Default",
-     *              e.g. {@code R.string.pref_language_default}
-     */
-    public static void setup(Class<?> clazz, int resId) {
-        if (Languages.clazz == null) {
-            Languages.clazz = clazz;
-            Languages.resId = resId;
-        } else {
-            throw new RuntimeException("Languages singleton was already initialized, duplicate call to Languages.setup()!");
-        }
-    }
-
     /**
      * @param activity the {@link Activity} this is working as part of
      * @return the singleton to work with
@@ -213,12 +168,9 @@ public final class Languages {
             CHINESE_HONG_KONG,
             TIBETAN,
             new Locale("af"),
-            new Locale("am"),
             new Locale("ar"),
-            new Locale("az"),
             new Locale("be"),
             new Locale("bg"),
-            new Locale("bn"),
             new Locale("ca"),
             new Locale("cs"),
             new Locale("da"),
@@ -229,58 +181,29 @@ public final class Languages {
             new Locale("eu"),
             new Locale("fa"),
             new Locale("fi"),
-            new Locale("gl"),
+            new Locale("he"),
             new Locale("hi"),
-            new Locale("hr"),
             new Locale("hu"),
             new Locale("hy"),
-            new Locale("in"),
+            new Locale("id"),
-            new Locale("hy"),
-            new Locale("in"),
             new Locale("is"),
             new Locale("it"),
-            new Locale("iw"),
-            new Locale("ka"),
-            new Locale("kk"),
-            new Locale("km"),
-            new Locale("kn"),
-            new Locale("ky"),
-            new Locale("lo"),
-            new Locale("lt"),
-            new Locale("lv"),
-            new Locale("mk"),
-            new Locale("ml"),
-            new Locale("mn"),
-            new Locale("mr"),
-            new Locale("ms"),
             new Locale("my"),
             new Locale("nb"),
-            new Locale("ne"),
             new Locale("nl"),
             new Locale("pl"),
             new Locale("pt"),
-            new Locale("rm"),
             new Locale("ro"),
             new Locale("ru"),
             new Locale("sc"),
-            new Locale("si"),
             new Locale("sk"),
-            new Locale("sl"),
             new Locale("sn"),
-            new Locale("sq"),
             new Locale("sr"),
             new Locale("sv"),
-            new Locale("sw"),
-            new Locale("ta"),
-            new Locale("te"),
             new Locale("th"),
-            new Locale("tl"),
             new Locale("tr"),
             new Locale("uk"),
-            new Locale("ur"),
-            new Locale("uz"),
             new Locale("vi"),
-            new Locale("zu"),
     };
 
 }