View user details in ViewUserDetailActivity. Follow or unfollow user is not properly implemented right now. Change users and subscribed_users databases' schemes. Press Profile in navigation drawer to view my reddit info. Press the username in the post to view that account's info.

app/src/main/java/User/UserRepository.java

@@ -0,0 +1,39 @@
+package User;
+
+import android.app.Application;
+import android.arch.lifecycle.LiveData;
+import android.os.AsyncTask;
+
+public class UserRepository {
+    private UserDao mUserDao;
+    private LiveData<UserData> mUserLiveData;
+
+    UserRepository(Application application, String userName) {
+        mUserDao = UserRoomDatabase.getDatabase(application).userDao();
+
+        mUserLiveData = mUserDao.getUserLiveData(userName);
+    }
+
+    LiveData<UserData> getUserLiveData() {
+        return mUserLiveData;
+    }
+
+    public void insert(UserData userData) {
+        new InsertAsyncTask(mUserDao).execute(userData);
+    }
+
+    private static class InsertAsyncTask extends AsyncTask<UserData, Void, Void> {
+
+        private UserDao mAsyncTaskDao;
+
+        InsertAsyncTask(UserDao dao) {
+            mAsyncTaskDao = dao;
+        }
+
+        @Override
+        protected Void doInBackground(final UserData... params) {
+            mAsyncTaskDao.insert(params[0]);
+            return null;
+        }
+    }
+}