Cancel retrofit calls in fragment onDestroy

app/src/main/java/com/keylesspalace/tusky/AccountFragment.java

@@ -40,10 +40,13 @@ import retrofit2.Callback;
 public class AccountFragment extends Fragment implements AccountActionListener {
     private static final String TAG = "Account"; // logging tag
 
+    private Call<List<Account>> listCall;
+
     public enum Type {
         FOLLOWS,
         FOLLOWERS,
         BLOCKS,
+        MUTES,
     }
 
     private Type type;
@@ -141,6 +144,12 @@ public class AccountFragment extends Fragment implements AccountActionListener {
         return rootView;
     }
 
+    @Override
+    public void onDestroy() {
+        super.onDestroy();
+        if (listCall != null) listCall.cancel();
+    }
+
     @Override
     public void onDestroyView() {
         if (jumpToTopAllowed()) {
@@ -166,15 +175,23 @@ public class AccountFragment extends Fragment implements AccountActionListener {
         switch (type) {
             default:
             case FOLLOWS: {
-                api.accountFollowing(accountId, fromId, uptoId, null).enqueue(cb);
+                listCall = api.accountFollowing(accountId, fromId, uptoId, null);
+                listCall.enqueue(cb);
                 break;
             }
             case FOLLOWERS: {
-                api.accountFollowers(accountId, fromId, uptoId, null).enqueue(cb);
+                listCall = api.accountFollowers(accountId, fromId, uptoId, null);
+                listCall.enqueue(cb);
                 break;
             }
             case BLOCKS: {
-                api.blocks(fromId, uptoId, null).enqueue(cb);
+                listCall = api.blocks(fromId, uptoId, null);
+                listCall.enqueue(cb);
+                break;
+            }
+            case MUTES: {
+                listCall = api.mutes(fromId, uptoId, null);
+                listCall.enqueue(cb);
                 break;
             }
         }

app/src/main/java/com/keylesspalace/tusky/NotificationsFragment.java

@@ -48,6 +48,7 @@ public class NotificationsFragment extends SFragment implements
     private EndlessOnScrollListener scrollListener;
     private NotificationsAdapter adapter;
     private TabLayout.OnTabSelectedListener onTabSelectedListener;
+    private Call<List<Notification>> listCall;
 
     public static NotificationsFragment newInstance() {
         NotificationsFragment fragment = new NotificationsFragment();
@@ -122,6 +123,12 @@ public class NotificationsFragment extends SFragment implements
         sendFetchNotificationsRequest();
     }
 
+    @Override
+    public void onDestroy() {
+        super.onDestroy();
+        if (listCall != null) listCall.cancel();
+    }
+
     @Override
     public void onDestroyView() {
         TabLayout tabLayout = (TabLayout) getActivity().findViewById(R.id.tab_layout);
@@ -137,7 +144,9 @@ public class NotificationsFragment extends SFragment implements
     private void sendFetchNotificationsRequest(final String fromId, String uptoId) {
         MastodonAPI api = ((BaseActivity) getActivity()).mastodonAPI;
 
-        api.notifications(fromId, uptoId, null).enqueue(new Callback<List<Notification>>() {
+        listCall = api.notifications(fromId, uptoId, null);
+
+        listCall.enqueue(new Callback<List<Notification>>() {
             @Override
             public void onResponse(Call<List<Notification>> call, retrofit2.Response<List<Notification>> response) {
                 if (response.isSuccessful()) {

app/src/main/java/com/keylesspalace/tusky/TimelineFragment.java

@@ -39,6 +39,8 @@ public class TimelineFragment extends SFragment implements
         SwipeRefreshLayout.OnRefreshListener, StatusActionListener {
     private static final String TAG = "Timeline"; // logging tag
 
+    private Call<List<Status>> listCall;
+
     enum Kind {
         HOME,
         PUBLIC,
@@ -144,6 +146,12 @@ public class TimelineFragment extends SFragment implements
         sendFetchTimelineRequest();
     }
 
+    @Override
+    public void onDestroy() {
+        super.onDestroy();
+        if (listCall != null) listCall.cancel();
+    }
+
     @Override
     public void onDestroyView() {
         if (jumpToTopAllowed()) {
@@ -184,23 +192,28 @@ public class TimelineFragment extends SFragment implements
         switch (kind) {
             default:
             case HOME: {
-                api.homeTimeline(fromId, uptoId, null).enqueue(cb);
+                listCall = api.homeTimeline(fromId, uptoId, null);
+                listCall.enqueue(cb);
                 break;
             }
             case PUBLIC: {
-                api.publicTimeline(null, fromId, uptoId, null).enqueue(cb);
+                listCall = api.publicTimeline(null, fromId, uptoId, null);
+                listCall.enqueue(cb);
                 break;
             }
             case TAG: {
-                api.hashtagTimeline(hashtagOrId, null, fromId, uptoId, null).enqueue(cb);
+                listCall = api.hashtagTimeline(hashtagOrId, null, fromId, uptoId, null);
+                listCall.enqueue(cb);
                 break;
             }
             case USER: {
-                api.accountStatuses(hashtagOrId, fromId, uptoId, null).enqueue(cb);
+                listCall = api.accountStatuses(hashtagOrId, fromId, uptoId, null);
+                listCall.enqueue(cb);
                 break;
             }
             case FAVOURITES: {
-                api.favourites(fromId, uptoId, null).enqueue(cb);
+                listCall = api.favourites(fromId, uptoId, null);
+                listCall.enqueue(cb);
                 break;
             }
         }