Revise share-offline screen wording; always show connected peers counter

briar-android/src/main/java/org/briarproject/briar/android/hotspot/AbstractTabsFragment.java

@@ -9,6 +9,7 @@ import android.view.MenuItem;
 import android.view.View;
 import android.view.ViewGroup;
 import android.widget.Button;
+import android.widget.TextView;
 
 import com.google.android.material.tabs.TabLayout;
 import com.google.android.material.tabs.TabLayoutMediator;
@@ -43,6 +44,7 @@ public abstract class AbstractTabsFragment extends Fragment {
 
 	protected Button stopButton;
 	protected Button connectedButton;
+	protected TextView connectedView;
 
 	@Override
 	public void onAttach(Context context) {
@@ -85,6 +87,9 @@ public abstract class AbstractTabsFragment extends Fragment {
 			finishAfterTransition(requireActivity());
 		});
 		connectedButton = view.findViewById(R.id.connectedButton);
+		connectedView = view.findViewById(R.id.connectedView);
+		viewModel.getPeersConnectedEvent()
+				.observe(getViewLifecycleOwner(), this::onPeerConnected);
 	}
 
 	@Override
@@ -126,4 +131,13 @@ public abstract class AbstractTabsFragment extends Fragment {
 		}
 	}
 
+	private void onPeerConnected(int peers) {
+		if (peers == 0) {
+			connectedView.setText(R.string.hotspot_no_peers_connected);
+		} else {
+			connectedView.setText(getResources().getQuantityString(
+					R.plurals.hotspot_peers_connected, peers, peers));
+		}
+	}
+
 }

briar-android/src/main/java/org/briarproject/briar/android/hotspot/HotspotFragment.java

@@ -2,11 +2,9 @@ package org.briarproject.briar.android.hotspot;
 
 import android.os.Bundle;
 import android.view.View;
-import android.widget.Toast;
 
 import org.briarproject.bramble.api.nullsafety.MethodsNotNullByDefault;
 import org.briarproject.bramble.api.nullsafety.ParametersNotNullByDefault;
-import org.briarproject.briar.R;
 
 import androidx.annotation.Nullable;
 import androidx.fragment.app.Fragment;
@@ -23,8 +21,6 @@ public class HotspotFragment extends AbstractTabsFragment {
 	public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {
 		super.onViewCreated(view, savedInstanceState);
 		connectedButton.setOnClickListener(v -> showNextFragment());
-		viewModel.getPeerConnectedEvent().observeEvent(getViewLifecycleOwner(),
-				this::onPeerConnected);
 	}
 
 	@Override
@@ -37,12 +33,6 @@ public class HotspotFragment extends AbstractTabsFragment {
 		return QrHotspotFragment.newInstance(true);
 	}
 
-	private void onPeerConnected(boolean connected) {
-		if (!connected) return;
-		Toast.makeText(requireContext(), R.string.hotspot_peer_connected,
-				Toast.LENGTH_LONG).show();
-	}
-
 	private void showNextFragment() {
 		Fragment f = new WebsiteFragment();
 		String tag = WebsiteFragment.TAG;

briar-android/src/main/java/org/briarproject/briar/android/hotspot/HotspotManager.java

@@ -66,7 +66,7 @@ class HotspotManager {
 		void onHotspotStarted(NetworkConfig networkConfig);
 
 		@UiThread
-		void onDeviceConnected();
+		void onPeersUpdated(int peers);
 
 		@UiThread
 		void onHotspotError(String error);
@@ -377,12 +377,11 @@ class HotspotManager {
 	private void requestGroupInfoForConnection() {
 		LOG.info("requestGroupInfo for connection");
 		GroupInfoListener groupListener = group -> {
-			if (group == null || group.getClientList().isEmpty()) {
-				handler.postDelayed(this::requestGroupInfoForConnection,
-						RETRY_DELAY_MILLIS);
-			} else {
-				listener.onDeviceConnected();
+			if (group != null) {
+				listener.onPeersUpdated(group.getClientList().size());
 			}
+			handler.postDelayed(this::requestGroupInfoForConnection,
+					RETRY_DELAY_MILLIS);
 		};
 		try {
 			if (channel == null) return;

briar-android/src/main/java/org/briarproject/briar/android/hotspot/HotspotViewModel.java

@@ -63,8 +63,8 @@ class HotspotViewModel extends DbViewModel
 
 	private final MutableLiveData<HotspotState> state =
 			new MutableLiveData<>();
-	private final MutableLiveEvent<Boolean> peerConnected =
-			new MutableLiveEvent<>();
+	private final MutableLiveData<Integer> peersConnected =
+			new MutableLiveData<>();
 	private final MutableLiveEvent<Uri> savedApkToUri =
 			new MutableLiveEvent<>();
 
@@ -137,8 +137,8 @@ class HotspotViewModel extends DbViewModel
 
 	@UiThread
 	@Override
-	public void onDeviceConnected() {
-		peerConnected.setEvent(true);
+	public void onPeersUpdated(int peers) {
+		peersConnected.setValue(peers);
 	}
 
 	@Override
@@ -213,8 +213,8 @@ class HotspotViewModel extends DbViewModel
 		return state;
 	}
 
-	LiveEvent<Boolean> getPeerConnectedEvent() {
-		return peerConnected;
+	LiveData<Integer> getPeersConnectedEvent() {
+		return peersConnected;
 	}
 
 	LiveEvent<Uri> getSavedApkToUri() {