Reorganizes the whole codebase.

app/src/main/java/com/keylesspalace/tusky/fragment/BaseFragment.java

@@ -0,0 +1,52 @@
+/* Copyright 2017 Andrew Dawson
+ *
+ * This file is a part of Tusky.
+ *
+ * This program is free software; you can redistribute it and/or modify it under the terms of the
+ * GNU General Public License as published by the Free Software Foundation; either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * Tusky is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even
+ * the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
+ * Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along with Tusky; if not,
+ * see <http://www.gnu.org/licenses>. */
+
+package com.keylesspalace.tusky.fragment;
+
+import android.content.Context;
+import android.content.SharedPreferences;
+import android.os.Bundle;
+import android.support.annotation.Nullable;
+import android.support.v4.app.Fragment;
+
+import com.keylesspalace.tusky.R;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import retrofit2.Call;
+
+public class BaseFragment extends Fragment {
+    protected List<Call> callList;
+
+    @Override
+    public void onCreate(@Nullable Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        callList = new ArrayList<>();
+    }
+
+    @Override
+    public void onDestroy() {
+        for (Call call : callList) {
+            call.cancel();
+        }
+        super.onDestroy();
+    }
+
+    protected SharedPreferences getPrivatePreferences() {
+        return getContext().getSharedPreferences(
+                getString(R.string.preferences_file_key), Context.MODE_PRIVATE);
+    }
+}