Fix offer image

app/src/main/java/app/insti/adapter/GenericAdapter.java

@@ -58,8 +58,6 @@ public class GenericAdapter extends CardAdapter<CardInterface> {
     public int getAvatarPlaceholder(CardInterface cardInterface) {
         if (cardInterface instanceof User) {
             return R.drawable.user_placeholder;
-        } else if (cardInterface instanceof OfferedAchievement) {
-            return R.drawable.ic_done_all_black_256dp;
         }
         return Utils.isDarkTheme ? R.drawable.lotus_placeholder_dark : R.drawable.lotus_placeholder;    
     }

app/src/main/java/app/insti/api/model/OfferedAchievement.java

@@ -6,6 +6,7 @@ import com.google.gson.annotations.SerializedName;
 
 import java.util.Objects;
 
+import app.insti.Utils;
 import app.insti.interfaces.CardInterface;
 
 public class OfferedAchievement implements CardInterface {
@@ -25,6 +26,9 @@ public class OfferedAchievement implements CardInterface {
     @SerializedName("event")
     private String achievementEventId;
 
+    @SerializedName("generic")
+    private String achievementGeneric;
+
     @NonNull
     public String getAchievementID() {
         return achievementID;
@@ -87,6 +91,7 @@ public class OfferedAchievement implements CardInterface {
     }
 
     public String getAvatarUrl() {
-        return null;
+        return String.format("https://insti.app/assets/achievements/%s%s.png",
+                achievementGeneric, Utils.isDarkTheme ? "_dark" : "");
     }
 }

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

@@ -191,6 +191,8 @@ public class EventFragment extends BackHandledFragment implements TransitionTarg
      * Set appbar to have an offset
      */
     private void setAppBarOffset(int offsetPx) {
+        if (getView() == null || getActivity() == null) return;
+
         AppBarLayout mAppBarLayout = getView().findViewById(R.id.appBar);
         CoordinatorLayout mCoordinatorLayour = getView().findViewById(R.id.coordinator);
         CoordinatorLayout.LayoutParams params = (CoordinatorLayout.LayoutParams) mAppBarLayout.getLayoutParams();
@@ -200,6 +202,8 @@ public class EventFragment extends BackHandledFragment implements TransitionTarg
     }
 
     private void refreshEvent(Event min_event) {
+        if (getView() == null || getActivity() == null) return;
+
         RetrofitInterface retrofitInterface = Utils.getRetrofitInterface();
         retrofitInterface.getEvent(Utils.getSessionIDHeader(), min_event.getEventID()).enqueue(new EmptyCallback<Event>() {
             @Override

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

@@ -143,6 +143,7 @@ public class WebViewFragment extends BaseFragment {
     public void onStop() {
         if (mCameraSource != null) {
             mCameraSource.release();
+            mCameraSource = null;
         }
         super.onStop();
     }