Added country language param to the suggestionList method in search engine

app/src/androidTest/java/org/schabi/newpipe/extractor/youtube/YoutubeSearchEngineTest.java

@@ -40,7 +40,7 @@ public class YoutubeSearchEngineTest extends AndroidTestCase {
 
         result = engine.search("https://www.youtube.com/results?search_query=bla",
                 0, "de", new Downloader());
-        suggestionReply = engine.suggestionList("hello", new Downloader());
+        suggestionReply = engine.suggestionList("hello","de",new Downloader());
     }
 
     public void testIfNoErrorOccur() {

app/src/main/java/org/schabi/newpipe/SuggestionListAdapter.java

@@ -16,20 +16,10 @@ import java.util.ArrayList;
  */
 public class SuggestionListAdapter extends CursorAdapter {
 
-    private ArrayList<String> suggestions;
     private String[] columns = new String[]{"_id", "title"};
 
     public SuggestionListAdapter(Context context) {
         super(context, null, false);
-
-    }
-
-    public ArrayList<String> getSuggestions() {
-        return suggestions;
-    }
-
-    public void setSuggestions(ArrayList<String> suggestions) {
-        this.suggestions = suggestions;
     }
 
     @Override

app/src/main/java/org/schabi/newpipe/VideoItemListActivity.java

@@ -2,6 +2,7 @@ package org.schabi.newpipe;
 
 import android.content.Context;
 import android.content.Intent;
+import android.content.SharedPreferences;
 import android.os.Bundle;
 import android.os.Handler;
 import android.preference.PreferenceManager;
@@ -150,16 +151,21 @@ public class VideoItemListActivity extends AppCompatActivity
         private final SearchEngine engine;
         private final String query;
         final Handler h = new Handler();
-
+        private Context context;
         private SuggestionSearchRunnable(SearchEngine engine, String query) {
             this.engine = engine;
             this.query = query;
+            context = VideoItemListActivity.this;
         }
 
         @Override
         public void run() {
             try {
-                ArrayList<String>suggestions = engine.suggestionList(query,new Downloader());
+                SharedPreferences sp = PreferenceManager.getDefaultSharedPreferences(context);
+                String searchLanguageKey = context.getString(R.string.search_language_key);
+                String searchLanguage = sp.getString(searchLanguageKey,
+                        getString(R.string.default_language_value));
+                ArrayList<String>suggestions = engine.suggestionList(query,searchLanguage,new Downloader());
                 h.post(new SuggestionResultRunnable(suggestions));
             } catch (ExtractionException e) {
                 e.printStackTrace();

app/src/main/java/org/schabi/newpipe/extractor/SearchEngine.java

@@ -33,7 +33,7 @@ public interface SearchEngine {
         public final List<VideoPreviewInfo> resultList = new Vector<>();
     }
 
-    ArrayList<String> suggestionList(String query, Downloader dl)
+    ArrayList<String> suggestionList(String query,String contentCountry, Downloader dl)
             throws ExtractionException, IOException;
 
     //Result search(String query, int page);

app/src/main/java/org/schabi/newpipe/extractor/services/youtube/YoutubeSearchEngine.java

@@ -147,7 +147,7 @@ public class YoutubeSearchEngine implements SearchEngine {
     }
 
     @Override
-    public ArrayList<String> suggestionList(String query, Downloader dl)
+    public ArrayList<String> suggestionList(String query,String contentCountry, Downloader dl)
             throws IOException, ParsingException {
 
         ArrayList<String> suggestions = new ArrayList<>();
@@ -160,6 +160,7 @@ public class YoutubeSearchEngine implements SearchEngine {
                 .appendQueryParameter("client", "")
                 .appendQueryParameter("output", "toolbar")
                 .appendQueryParameter("ds", "yt")
+                .appendQueryParameter("hl",contentCountry)
                 .appendQueryParameter("q", query);
         String url = builder.build().toString();