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

@@ -4,6 +4,7 @@ import android.content.Context;
 import android.content.res.AssetManager;
 
 import com.google.gson.Gson;
+import com.google.gson.reflect.TypeToken;
 
 import java.io.IOException;
 import java.io.InputStream;
@@ -14,21 +15,20 @@ 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();
+        Class<T> res = null;
         try {
             InputStream is = am.open(fileName);
             InputStreamReader inputStreamReader = new InputStreamReader(is);
-            T res = gson.fromJson(inputStreamReader,);
+            res = gson.fromJson(inputStreamReader,new TypeToken<T>(){}.getType());
+
         } catch (IOException e) {
             e.printStackTrace();
         }
-        //TODO make
+        return res;
-        return null;
     }
 
     public void writeFileData(T objectToWrite) {

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

@@ -1,8 +1,26 @@
 package com.a1.nextlocation.recyclerview;
 
-public class CouponLoader implements Loader{
+import android.content.Context;
-    @Override
-    public void load() {
 
+import com.a1.nextlocation.data.Coupon;
+import com.a1.nextlocation.data.FileIO;
+import com.a1.nextlocation.data.Location;
+
+import java.util.List;
+
+public class CouponLoader implements Loader<List<Coupon>> {
+    private final Context context;
+    public CouponLoader(Context context) {
+        this.context = context;
+    }
+    @Override
+    public List<Coupon> load() {
+        FileIO<List<Coupon>> fileIO = new FileIO<>();
+        try {
+            return fileIO.readFileData(context,"coupons.json").newInstance();
+        } catch (IllegalAccessException | InstantiationException e) {
+            e.printStackTrace();
+        }
+        return null;
     }
 }

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

@@ -1,13 +1,27 @@
 package com.a1.nextlocation.recyclerview;
 
+import android.content.Context;
+
+import com.a1.nextlocation.data.FileIO;
 import com.a1.nextlocation.data.Location;
 
 import java.util.List;
 
 public class LocationLoader implements Loader<List<Location>>{
+    private final Context context;
+
+    public LocationLoader(Context context) {
+        this.context = context;
+    }
 
     @Override
     public List<Location> load() {
+        FileIO<List<Location>> fileIO = new FileIO<>();
+        try {
+            return fileIO.readFileData(context,"locations.json").newInstance();
+        } catch (IllegalAccessException | InstantiationException e) {
+            e.printStackTrace();
+        }
         return null;
     }
 }

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

@@ -1,8 +1,28 @@
 package com.a1.nextlocation.recyclerview;
 
-public class RouteLoader implements Loader {
+import android.content.Context;
-    @Override
-    public void load() {
 
+import com.a1.nextlocation.data.FileIO;
+import com.a1.nextlocation.data.Location;
+import com.a1.nextlocation.data.Route;
+
+import java.util.List;
+
+public class RouteLoader implements Loader<List<Route>> {
+    private final Context context;
+    public RouteLoader(Context context) {
+        this.context = context;
+    }
+
+    @Override
+    public List<Route> load() {
+
+        FileIO<List<Route>> fileIO = new FileIO<>();
+        try {
+            return fileIO.readFileData(context,"routes.json").newInstance();
+        } catch (IllegalAccessException | InstantiationException e) {
+            e.printStackTrace();
+        }
+        return null;
     }
 }