Save the database after a drag-drop event and stop saving it on onStop

app/src/main/java/me/impy/aegis/KeyProfileAdapter.java

@@ -56,6 +56,11 @@ public class KeyProfileAdapter extends RecyclerView.Adapter<KeyProfileAdapter.Ke
 
     }
 
+    @Override
+    public void onItemDrop(int position) {
+        _listener.onKeyProfileDrop(_keyProfiles.get(position));
+    }
+
     @Override
     public void onItemMove(int firstPosition, int secondPosition) {
         // notify the database first
@@ -177,5 +182,6 @@ public class KeyProfileAdapter extends RecyclerView.Adapter<KeyProfileAdapter.Ke
         void onKeyProfileClick(KeyProfile profile);
         boolean onLongKeyProfileClick(KeyProfile profile);
         void onKeyProfileMove(KeyProfile profile1, KeyProfile profile2);
+        void onKeyProfileDrop(KeyProfile profile);
     }
 }

app/src/main/java/me/impy/aegis/MainActivity.java

@@ -344,12 +344,6 @@ public class MainActivity extends AppCompatActivity implements KeyProfileAdapter
         setPreferredTheme();
     }
 
-    @Override
-    protected void onStop() {
-        saveDatabase();
-        super.onStop();
-    }
-
     private BottomSheetDialog createBottomSheet(KeyProfile profile) {
         View bottomSheetView = getLayoutInflater().inflate(R.layout.bottom_sheet_edit_profile, null);
         LinearLayout copyLayout = bottomSheetView.findViewById(R.id.copy_button);
@@ -474,16 +468,11 @@ public class MainActivity extends AppCompatActivity implements KeyProfileAdapter
         }
 
         if (restart) {
-            finish();
-            startActivity(new Intent(this, this.getClass()));
+            recreate();
         }
     }
 
     private void saveDatabase() {
-        if (!_db.isDecrypted()) {
-            return;
-        }
-
         try {
             _db.save();
         } catch (Exception e) {
@@ -536,4 +525,9 @@ public class MainActivity extends AppCompatActivity implements KeyProfileAdapter
             throw new UndeclaredThrowableException(e);
         }
     }
+
+    @Override
+    public void onKeyProfileDrop(KeyProfile profile) {
+        saveDatabase();
+    }
 }

app/src/main/java/me/impy/aegis/helpers/ItemTouchHelperAdapter.java

@@ -30,4 +30,11 @@ public interface ItemTouchHelperAdapter {
      * @see RecyclerView.ViewHolder#getAdapterPosition()
      */
     void onItemDismiss(int position);
-}
+
+    /**
+     * Called when an item has been dropped after a drag.
+     *
+     * @param position The position of the moved item.
+     */
+    void onItemDrop(int position);
+}

app/src/main/java/me/impy/aegis/helpers/SimpleItemTouchHelperCallback.java

@@ -6,6 +6,7 @@ import android.support.v7.widget.helper.ItemTouchHelper;
 public class SimpleItemTouchHelperCallback extends ItemTouchHelper.Callback {
 
     private final ItemTouchHelperAdapter _adapter;
+    private boolean _positionChanged = false;
 
     public SimpleItemTouchHelperCallback(ItemTouchHelperAdapter adapter) {
         _adapter = adapter;
@@ -32,6 +33,7 @@ public class SimpleItemTouchHelperCallback extends ItemTouchHelper.Callback {
     public boolean onMove(RecyclerView recyclerView, RecyclerView.ViewHolder viewHolder,
                           RecyclerView.ViewHolder target) {
         _adapter.onItemMove(viewHolder.getAdapterPosition(), target.getAdapterPosition());
+        _positionChanged = true;
         return true;
     }
 
@@ -39,4 +41,14 @@ public class SimpleItemTouchHelperCallback extends ItemTouchHelper.Callback {
     public void onSwiped(RecyclerView.ViewHolder viewHolder, int direction) {
         _adapter.onItemDismiss(viewHolder.getAdapterPosition());
     }
+
+    @Override
+    public void clearView(RecyclerView recyclerView, RecyclerView.ViewHolder viewHolder) {
+        super.clearView(recyclerView, viewHolder);
+
+        if (_positionChanged) {
+            _adapter.onItemDrop(viewHolder.getAdapterPosition());
+            _positionChanged = false;
+        }
+    }
 }