Use okHttpClient as a singleton

app/src/main/java/com/readrops/app/repositories/LocalFeedRepository.java

@@ -14,8 +14,8 @@ import com.readrops.app.utils.FeedInsertionResult;
 import com.readrops.app.utils.Utils;
 import com.readrops.app.utils.HtmlParser;
 import com.readrops.app.utils.ParsingResult;
-import com.readrops.readropslibrary.Utils.LibUtils;
+import com.readrops.readropslibrary.utils.LibUtils;
-import com.readrops.readropslibrary.Utils.UnknownFormatException;
+import com.readrops.readropslibrary.utils.UnknownFormatException;
 import com.readrops.readropslibrary.localfeed.AFeed;
 import com.readrops.readropslibrary.localfeed.RSSQuery;
 import com.readrops.readropslibrary.localfeed.RSSQueryResult;

app/src/main/java/com/readrops/app/utils/HtmlParser.java

@@ -2,7 +2,7 @@ package com.readrops.app.utils;
 
 import android.util.Log;
 
-import com.readrops.readropslibrary.Utils.LibUtils;
+import com.readrops.readropslibrary.utils.LibUtils;
 
 import org.jsoup.Connection;
 import org.jsoup.Jsoup;

app/src/main/java/com/readrops/app/utils/ReadropsWebView.java

@@ -8,7 +8,7 @@ import android.webkit.WebView;
 
 import com.readrops.app.R;
 import com.readrops.app.database.pojo.ItemWithFeed;
-import com.readrops.readropslibrary.Utils.LibUtils;
+import com.readrops.readropslibrary.utils.LibUtils;
 
 import org.jsoup.Jsoup;
 import org.jsoup.nodes.Document;

readropslibrary/src/main/java/com/readrops/readropslibrary/QueryCallback.java

@@ -1,12 +0,0 @@
-package com.readrops.readropslibrary;
-
-import com.readrops.readropslibrary.localfeed.AFeed;
-import com.readrops.readropslibrary.localfeed.RSSQuery;
-
-public interface QueryCallback {
-
-    void onSyncSuccess(AFeed feed, RSSQuery.RSSType type);
-
-    void onSyncFailure(Exception e);
-
-}

readropslibrary/src/main/java/com/readrops/readropslibrary/localfeed/RSSQuery.java

@@ -4,9 +4,9 @@ import android.accounts.NetworkErrorException;
 import android.util.Log;
 
 import com.google.gson.Gson;
-import com.readrops.readropslibrary.QueryCallback;
+import com.readrops.readropslibrary.utils.LibOkHttpClient;
-import com.readrops.readropslibrary.Utils.LibUtils;
+import com.readrops.readropslibrary.utils.LibUtils;
-import com.readrops.readropslibrary.Utils.UnknownFormatException;
+import com.readrops.readropslibrary.utils.UnknownFormatException;
 import com.readrops.readropslibrary.localfeed.atom.ATOMFeed;
 import com.readrops.readropslibrary.localfeed.json.JSONFeed;
 import com.readrops.readropslibrary.localfeed.rss.RSSFeed;
@@ -22,8 +22,6 @@ import java.util.Map;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 
-import javax.xml.stream.XMLStreamException;
-
 import okhttp3.OkHttpClient;
 import okhttp3.Request;
 import okhttp3.Response;
@@ -75,7 +73,7 @@ public class RSSQuery {
     }
 
     private Response query(String url, Map<String, String> headers) throws IOException {
-        OkHttpClient okHttpClient = new OkHttpClient();
+        OkHttpClient okHttpClient = LibOkHttpClient.getInstance();
 
         Request.Builder builder = new Request.Builder().url(url);
         for (String header : headers.keySet()) {

readropslibrary/src/main/java/com/readrops/readropslibrary/utils/LibOkHttpClient.java

@@ -0,0 +1,20 @@
+package com.readrops.readropslibrary.utils;
+
+import okhttp3.OkHttpClient;
+
+public final class LibOkHttpClient {
+
+    private static OkHttpClient okhttpClient;
+
+    public static OkHttpClient getInstance() {
+        if (okhttpClient == null)
+            okhttpClient = createOkHttpInstance();
+
+        return okhttpClient;
+    }
+
+    private static OkHttpClient createOkHttpInstance() {
+        return new OkHttpClient.Builder()
+                .build();
+    }
+}

readropslibrary/src/main/java/com/readrops/readropslibrary/utils/LibUtils.java

@@ -1,4 +1,4 @@
-package com.readrops.readropslibrary.Utils;
+package com.readrops.readropslibrary.utils;
 
 import java.io.InputStream;
 import java.util.Scanner;

readropslibrary/src/main/java/com/readrops/readropslibrary/utils/UnknownFormatException.java

@@ -1,4 +1,4 @@
-package com.readrops.readropslibrary.Utils;
+package com.readrops.readropslibrary.utils;
 
 public class UnknownFormatException extends Exception {