[ADD] loaders and fileio read

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;
     }
 }