changed loader stuff

app/src/main/java/com/a1/nextlocation/data/Coupon.java

@@ -12,7 +12,7 @@ public class Coupon {
      */
     @NonNull
     private String code;
-    
+
     @NonNull
     private String reward;
 

app/src/main/java/com/a1/nextlocation/data/FileIO.java

@@ -1,12 +1,37 @@
 package com.a1.nextlocation.data;
 
-public class FileIO {
+import android.content.Context;
+import android.content.res.AssetManager;
 
-    public static void readFileData() {
+import com.google.gson.Gson;
 
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.io.Reader;
+import java.nio.file.Files;
+import java.nio.file.Paths;
+
+public class FileIO<T> {
+
+    private Class<T> tClass;
+
+
+    public Class<T> readFileData(Context context, String fileName) {
+        Gson gson = new Gson();
+        AssetManager am = context.getAssets();
+        try {
+            InputStream is = am.open(fileName);
+            InputStreamReader inputStreamReader = new InputStreamReader(is);
+            T res = gson.fromJson(inputStreamReader,);
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+        //TODO make
+        return null;
     }
 
-    public static void writeFileData() {
+    public void writeFileData(T objectToWrite) {
-
+        //TODO make
     }
 }

app/src/main/java/com/a1/nextlocation/recyclerview/Loader.java

@@ -1,5 +1,5 @@
 package com.a1.nextlocation.recyclerview;
 
-public interface Loader {
+public interface Loader<T> {
-    void load();
+    T load();
 }

app/src/main/java/com/a1/nextlocation/recyclerview/LocationLoader.java

@@ -1,8 +1,11 @@
 package com.a1.nextlocation.recyclerview;
 
-public class LocationLoader implements Loader{
+import com.a1.nextlocation.data.Location;
-    @Override
-    public void load() {
 
+public class LocationLoader implements Loader<Location>{
+
+    @Override
+    public Location load() {
+        return null;
     }
 }