PreferenceSummaryHelper: new method getPreferenceTitle - to get title from...

PreferenceSummaryHelper: new method getPreferenceTitle - to get title from title and summary resource string.

app/src/main/java/com/xabber/android/ui/helper/PreferenceSummaryHelper.java

@@ -32,19 +32,41 @@ public final class PreferenceSummaryHelper {
     public static void updateSummary(PreferenceGroup group) {
         for (int index = 0; index < group.getPreferenceCount(); index++) {
             Preference preference = group.getPreference(index);
-			if (preference instanceof PreferenceGroup)
+            if (preference instanceof PreferenceGroup) {
                 updateSummary((PreferenceGroup) preference);
-			String title = preference.getTitle().toString();
-			int delimeter = title.indexOf("\n");
-			if (delimeter == -1)
+            }
+            String titleAndSummary = preference.getTitle().toString();
+
+            if (!isTitleAndSummary(titleAndSummary)) {
                 continue;
-			preference.setTitle(title.substring(0, delimeter));
-			if (preference instanceof DialogPreference)
-				((DialogPreference) preference).setDialogTitle(preference
-						.getTitle());
-			preference
-					.setSummary(title.substring(delimeter + 1, title.length()));
             }
+
+            preference.setTitle(getPreferenceTitle(titleAndSummary));
+            if (preference instanceof DialogPreference) {
+                ((DialogPreference) preference).setDialogTitle(preference.getTitle());
+            }
+            preference.setSummary(getPreferenceSummary(titleAndSummary));
+        }
+    }
+
+    private static boolean isTitleAndSummary(String titleAndSummary) {
+        return titleAndSummary.contains("\n");
+    }
+
+    public static String getPreferenceTitle(String titleAndSummary) {
+        int delimiter = titleAndSummary.indexOf("\n");
+        if (delimiter == -1) {
+            return titleAndSummary;
+        }
+        return titleAndSummary.substring(0, delimiter);
+    }
+
+    private static String getPreferenceSummary(String titleAndSummary) {
+        int delimiter = titleAndSummary.indexOf("\n");
+        if (delimiter == -1) {
+            return "";
+        }
+        return titleAndSummary.substring(delimiter + 1, titleAndSummary.length());
     }
 
 }