Subscribe to change settings text

app/src/main/java/de/danoeh/antennapod/ui/screen/feed/FeedItemlistFragment.java

@@ -495,7 +495,6 @@ public class FeedItemlistFragment extends Fragment implements AdapterView.OnItem
         boolean isSubscribed = feed.getState() == Feed.STATE_SUBSCRIBED;
         viewBinding.header.butShowInfo.setVisibility(isSubscribed ? View.VISIBLE : View.GONE);
         viewBinding.header.butFilter.setVisibility(isSubscribed ? View.VISIBLE : View.GONE);
-        viewBinding.header.butShowSettings.setVisibility(isSubscribed ? View.VISIBLE : View.GONE);
         viewBinding.header.butSubscribe.setVisibility(isSubscribed ? View.GONE : View.VISIBLE);
     }
 
@@ -517,6 +516,10 @@ public class FeedItemlistFragment extends Fragment implements AdapterView.OnItem
         });
         viewBinding.header.butShowSettings.setOnClickListener(v -> {
             if (feed != null) {
+                if (feed.getState() != Feed.STATE_SUBSCRIBED) {
+                    EventBus.getDefault().post(new MessageEvent(getString(R.string.subscribe_for_settings)));
+                    return;
+                }
                 FeedSettingsFragment fragment = FeedSettingsFragment.newInstance(feed);
                 ((MainActivity) getActivity()).loadChildFragment(fragment, TransitionEffect.SLIDE);
             }

app/src/main/java/de/danoeh/antennapod/ui/screen/onlinefeedview/OnlineFeedViewActivity.java

@@ -6,10 +6,15 @@ import android.text.TextUtils;
 import android.util.Log;
 import android.widget.Toast;
 import androidx.appcompat.app.AppCompatActivity;
+import com.google.android.material.snackbar.Snackbar;
 import de.danoeh.antennapod.R;
 import de.danoeh.antennapod.databinding.OnlinefeedviewActivityBinding;
+import de.danoeh.antennapod.event.MessageEvent;
 import de.danoeh.antennapod.ui.common.ThemeSwitcher;
 import de.danoeh.antennapod.ui.common.ThemeUtils;
+import org.greenrobot.eventbus.EventBus;
+import org.greenrobot.eventbus.Subscribe;
+import org.greenrobot.eventbus.ThreadMode;
 
 import static de.danoeh.antennapod.ui.appstartintent.OnlineFeedviewActivityStarter.ARG_FEEDURL;
 import static de.danoeh.antennapod.ui.appstartintent.OnlineFeedviewActivityStarter.ARG_STARTED_FROM_SEARCH;
@@ -72,4 +77,26 @@ public class OnlineFeedViewActivity extends AppCompatActivity {
         super.finish();
         overridePendingTransition(android.R.anim.fade_in, android.R.anim.fade_out);
     }
+
+    @Override
+    public void onStart() {
+        super.onStart();
+        EventBus.getDefault().register(this);
+    }
+
+    @Override
+    protected void onStop() {
+        super.onStop();
+        EventBus.getDefault().unregister(this);
+    }
+
+    @Subscribe(threadMode = ThreadMode.MAIN)
+    public void onEventMainThread(MessageEvent event) {
+        Log.d(TAG, "onEvent(" + event + ")");
+        Snackbar snackbar = Snackbar.make(findViewById(R.id.fragmentContainer), event.message, Snackbar.LENGTH_LONG);
+        if (event.action != null) {
+            snackbar.setAction(event.actionText, v -> event.action.accept(this));
+        }
+        snackbar.show();
+    }
 }

app/src/main/res/layout/feeditemlist_header.xml

@@ -28,6 +28,14 @@
                 android:layout_width="148dp"
                 android:layout_height="match_parent" />
 
+            <Button
+                android:id="@+id/butSubscribe"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:text="@string/subscribe_label"
+                android:visibility="gone"
+                tools:visibility="visible" />
+
             <ImageButton
                 android:id="@+id/butShowInfo"
                 android:layout_width="40dp"
@@ -38,6 +46,7 @@
                 android:layout_marginStart="-8dp"
                 android:scaleType="fitXY"
                 android:padding="8dp"
+                android:layout_gravity="center_vertical"
                 app:srcCompat="@drawable/ic_info_white"
                 tools:visibility="visible" />
 
@@ -49,6 +58,7 @@
                 android:contentDescription="@string/filter"
                 android:scaleType="fitXY"
                 android:padding="8dp"
+                android:layout_gravity="center_vertical"
                 app:srcCompat="@drawable/ic_filter_white"
                 tools:visibility="visible" />
 
@@ -60,17 +70,10 @@
                 android:contentDescription="@string/show_feed_settings_label"
                 android:scaleType="fitXY"
                 android:padding="8dp"
+                android:layout_gravity="center_vertical"
                 app:srcCompat="@drawable/ic_settings_white"
                 tools:visibility="visible" />
 
-            <Button
-                android:id="@+id/butSubscribe"
-                android:layout_width="wrap_content"
-                android:layout_height="wrap_content"
-                android:text="@string/subscribe_label"
-                android:visibility="gone"
-                tools:visibility="visible" />
-
         </LinearLayout>
 
         <ImageView

ui/i18n/src/main/res/values/strings.xml

@@ -682,6 +682,7 @@
     <!-- Online feed view -->
     <string name="subscribe_label">Subscribe</string>
     <string name="preview_episodes">Preview episodes</string>
+    <string name="subscribe_for_settings">Subscribe to change settings</string>
 
     <!-- Content descriptions for image buttons -->
     <string name="toolbar_back_button_content_description">Back</string>