language list is now properly sorted on Android < 7.0

app/src/main/java/io/github/sspanak/tt9/languages/Language.java

@@ -7,7 +7,7 @@
 import java.util.Locale;
 
 
-public class Language {
+public class Language implements Comparable<Language> {
 	public static String SPECIAL_CHARS_KEY = "0";
 	public static String PUNCTUATION_KEY = "1";
 
@@ -271,4 +271,12 @@ public String getDigitSequenceForWord(String word) throws InvalidLanguageCharact
 	public String toString() {
 		return getName();
 	}
+
+
+	@Override
+	public int compareTo(Language other) {
+		String key = getName().equals("Suomi") ? "su" : getLocale().toString();
+		String otherKey = other.getName().equals("Suomi") ? "su" : other.getLocale().toString();
+		return key.compareTo(otherKey);
+	}
 }

app/src/main/java/io/github/sspanak/tt9/languages/LanguageCollection.java

@@ -1,12 +1,11 @@
 package io.github.sspanak.tt9.languages;
 
 import android.content.Context;
-import android.os.Build;
 
 import androidx.annotation.Nullable;
 
 import java.util.ArrayList;
-import java.util.Comparator;
+import java.util.Collections;
 import java.util.HashMap;
 
 import io.github.sspanak.tt9.Logger;
@@ -77,10 +76,11 @@ public static ArrayList<Language> getAll(Context context, ArrayList<Integer> lan
 			}
 		}
 
-		if (sort && Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
-			langList.sort(Comparator.comparing(l -> l.getLocale().toString()));
+		if (sort) {
+			Collections.sort(langList);
 		}
 
+
 		return langList;
 	}
 
@@ -91,8 +91,8 @@ public static ArrayList<Language> getAll(Context context, ArrayList<Integer> lan
 	public static ArrayList<Language> getAll(Context context, boolean sort) {
 		ArrayList<Language> langList = new ArrayList<>(getInstance(context).languages.values());
 
-		if (sort && Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
-			langList.sort(Comparator.comparing(l -> l.getLocale().toString()));
+		if (sort) {
+			Collections.sort(langList);
 		}
 
 		return langList;
@@ -108,7 +108,9 @@ public static String toString(ArrayList<Language> list) {
 
 		for (int i = 0; i < listSize; i++) {
 			stringList.append(list.get(i));
-			stringList.append((i < listSize - 1) ? ", " : " ");
+			if (i < listSize - 1) {
+				stringList.append(", ");
+			}
 		}
 
 		return stringList.toString();