Add some description to the proxy settings screen.

app/src/main/java/org/thoughtcrime/securesms/preferences/EditProxyFragment.java

@@ -23,9 +23,11 @@ import org.thoughtcrime.securesms.R;
 import org.thoughtcrime.securesms.contactshare.SimpleTextWatcher;
 import org.thoughtcrime.securesms.keyvalue.SignalStore;
 import org.thoughtcrime.securesms.net.PipeConnectivityListener;
+import org.thoughtcrime.securesms.util.CommunicationActions;
 import org.thoughtcrime.securesms.util.SignalProxyUtil;
 import org.thoughtcrime.securesms.util.Util;
 import org.thoughtcrime.securesms.util.ViewUtil;
+import org.thoughtcrime.securesms.util.views.LearnMoreTextView;
 import org.whispersystems.libsignal.util.guava.Optional;
 import org.whispersystems.signalservice.internal.configuration.SignalProxy;
 
@@ -73,6 +75,10 @@ public class EditProxyFragment extends Fragment {
     shareButton.setOnClickListener(v -> onShareClicked());
     proxySwitch.setOnCheckedChangeListener((buttonView, isChecked) -> viewModel.onToggleProxy(isChecked));
 
+    LearnMoreTextView description = view.findViewById(R.id.edit_proxy_switch_title_description);
+    description.setLearnMoreVisible(true);
+    description.setOnLinkClickListener(v -> CommunicationActions.openBrowserLink(requireContext(), "https://support.signal.org/hc/articles/360056052052"));
+
     requireActivity().getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE);
   }
 

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

@@ -17,6 +17,17 @@
       app:layout_constraintStart_toStartOf="parent"
       app:layout_constraintEnd_toStartOf="@id/edit_proxy_switch"/>
 
+  <org.thoughtcrime.securesms.util.views.LearnMoreTextView
+      android:id="@+id/edit_proxy_switch_title_description"
+      android:layout_width="0dp"
+      android:layout_height="wrap_content"
+      android:text="@string/preferences_only_use_a_proxy_if"
+      style="@style/Signal.Text.Preview"
+      android:textColor="@color/signal_text_secondary"
+      app:layout_constraintTop_toBottomOf="@id/edit_proxy_switch_title"
+      app:layout_constraintStart_toStartOf="parent"
+      app:layout_constraintEnd_toStartOf="@id/edit_proxy_switch"/>
+
   <androidx.appcompat.widget.SwitchCompat
       android:id="@+id/edit_proxy_switch"
       android:layout_width="wrap_content"

app/src/main/res/values/strings.xml

@@ -2316,6 +2316,7 @@
     <string name="preferences_off">Off</string>
     <string name="preferences_on">On</string>
     <string name="preferences_proxy_address">Proxy address</string>
+    <string name="preferences_only_use_a_proxy_if">Only use a proxy if you\'re not able to connect to Signal on cellular or Wi-Fi.</string>
     <string name="preferences_share">Share</string>
     <string name="preferences_save">Save</string>
     <string name="preferences_connecting_to_proxy">Connecting to proxy…</string>