Add some null checks

app/src/main/java/app/insti/fragment/CalendarFragment.java

@@ -230,6 +230,8 @@ public class CalendarFragment extends BaseFragment {
             @Override
             public void onResponse(Call<NewsFeedResponse> call, Response<NewsFeedResponse> response) {
                 if (response.isSuccessful()) {
+                    if (getActivity() == null || getView() == null) return;
+
                     // Concatenate the response
                     NewsFeedResponse newsFeedResponse = response.body();
                     List<Event> eventList = newsFeedResponse.getEvents();

app/src/main/java/app/insti/fragment/MapFragment.java

@@ -231,7 +231,7 @@ public class MapFragment extends Fragment implements TextWatcher,
             @Override
             public void onResponse(Call<List<Venue>> call, Response<List<Venue>> response) {
                 if (response.isSuccessful()) {
-                    if (getActivity() == null || getView() == null) return;
+                    if (getActivity() == null || getView() == null || getContext() == null) return;
 
                     // Setup fade animation for background
                     int colorFrom = Utils.getAttrColor(getContext(), R.attr.themeColor);
@@ -241,6 +241,7 @@ public class MapFragment extends Fragment implements TextWatcher,
                     colorAnimation.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
                         @Override
                         public void onAnimationUpdate(ValueAnimator animator) {
+                            if (getActivity() == null || getView() == null) return;
                             getView().findViewById(R.id.main_container).setBackgroundColor(
                                     (int) animator.getAnimatedValue()
                             );
@@ -249,6 +250,7 @@ public class MapFragment extends Fragment implements TextWatcher,
                     colorAnimation.start();
 
                     // Show the location fab
+                    if (getView() == null) return;
                     ((FloatingActionButton) getView().findViewById(R.id.locate_fab)).show();
 
                     // Show the map and data

app/src/main/java/app/insti/fragment/UserFragment.java

@@ -116,6 +116,7 @@ public class UserFragment extends BackHandledFragment implements TransitionTarge
             @Override
             public void onResponse(Call<User> call, Response<User> response) {
                 if (response.isSuccessful()) {
+                    if (getActivity() == null || getView() == null) return;
                     user = response.body();
                     populateViews();
                     getActivity().findViewById(R.id.loadingPanel).setVisibility(View.GONE);
@@ -145,6 +146,8 @@ public class UserFragment extends BackHandledFragment implements TransitionTarge
     }
 
     private void populateViews() {
+        if (getActivity() == null || getView() == null) return;
+
         userProfilePictureImageView = getActivity().findViewById(R.id.user_profile_picture_profile);
         TextView userNameTextView = getActivity().findViewById(R.id.user_name_profile);
         TextView userRollNumberTextView = getActivity().findViewById(R.id.user_rollno_profile);