Merge pull request #8192 from GGAutomaton/fix-6696

Fix crash when rotating device on unsupported channels

Author: Stypox

app/src/main/java/org/schabi/newpipe/fragments/list/channel/ChannelFragment.java

@@ -77,6 +77,8 @@ public class ChannelFragment extends BaseListInfoFragment<StreamInfoItem, Channe
     private final CompositeDisposable disposables = new CompositeDisposable();
     private Disposable subscribeButtonMonitor;
 
+    private boolean channelContentNotSupported = false;
+
     /*//////////////////////////////////////////////////////////////////////////
     // Views
     //////////////////////////////////////////////////////////////////////////*/
@@ -130,6 +132,7 @@ public View onCreateView(@NonNull final LayoutInflater inflater,
     public void onViewCreated(@NonNull final View rootView, final Bundle savedInstanceState) {
         super.onViewCreated(rootView, savedInstanceState);
         channelBinding = FragmentChannelBinding.bind(rootView);
+        showContentNotSupportedIfNeeded();
     }
 
     @Override
@@ -524,9 +527,12 @@ public void handleResult(@NonNull final ChannelInfo result) {
             playlistControlBinding.getRoot().setVisibility(View.GONE);
         }
 
+        channelContentNotSupported = false;
         for (final Throwable throwable : result.getErrors()) {
             if (throwable instanceof ContentNotSupportedException) {
-                showContentNotSupported();
+                channelContentNotSupported = true;
+                showContentNotSupportedIfNeeded();
+                break;
             }
         }
 
@@ -558,7 +564,13 @@ public void handleResult(@NonNull final ChannelInfo result) {
         });
     }
 
-    private void showContentNotSupported() {
+    private void showContentNotSupportedIfNeeded() {
+        // channelBinding might not be initialized when handleResult() is called
+        // (e.g. after rotating the screen, #6696)
+        if (!channelContentNotSupported || channelBinding == null) {
+            return;
+        }
+
         channelBinding.errorContentNotSupported.setVisibility(View.VISIBLE);
         channelBinding.channelKaomoji.setText("(︶︹︺)");
         channelBinding.channelKaomoji.setTextSize(TypedValue.COMPLEX_UNIT_SP, 45f);