Fix edge-to-edge: Use AppBarLayout with Toolbar to extend behind status bar

- Add AppBarLayout with fitsSystemWindows for proper status bar handling
- Toolbar now draws behind the status bar with proper padding
- Background color extends all the way to the top of the screen
- RecyclerView uses appbar_scrolling_view_behavior for proper layout
- FAB still handles navigation bar insets correctly

Co-authored-by: adbenitez <24558636+adbenitez@users.noreply.github.com>

src/main/AndroidManifest.xml

@@ -240,6 +240,10 @@
               android:exported="true">
     </activity>
 
+    <activity android:name=".TransportListActivity"
+              android:windowSoftInputMode="stateHidden"
+              android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize"/>
+
     <activity android:name=".proxy.ProxySettingsActivity"
               android:label="@string/proxy_settings"
               android:windowSoftInputMode="stateHidden"

src/main/java/org/thoughtcrime/securesms/EditTransportActivity.java

@@ -119,9 +119,20 @@ public class EditTransportActivity extends BaseActionBarActivity implements DcEv
         });
 
         EnteredLoginParam config = null;
+        String transportAddr = getIntent().getStringExtra(TransportListActivity.EXTRA_TRANSPORT_ADDR);
         try {
             List<EnteredLoginParam> relays = rpc.listTransports(accId);
-            if (!relays.isEmpty()) config = relays.get(0);
+            if (transportAddr != null) {
+                // Find the transport with the specified address
+                for (EnteredLoginParam transport : relays) {
+                    if (transportAddr.equals(transport.addr)) {
+                        config = transport;
+                        break;
+                    }
+                }
+            } else if (!relays.isEmpty()) {
+                config = relays.get(0);
+            }
         } catch (RpcException ignored) {}
 
         ActionBar actionBar = getSupportActionBar();

src/main/java/org/thoughtcrime/securesms/TransportListActivity.java

@@ -0,0 +1,156 @@
+package org.thoughtcrime.securesms;
+
+import android.content.Intent;
+import android.os.Bundle;
+import android.view.MenuItem;
+import android.view.View;
+
+import androidx.annotation.NonNull;
+import androidx.appcompat.app.AlertDialog;
+import androidx.appcompat.widget.Toolbar;
+import androidx.coordinatorlayout.widget.CoordinatorLayout;
+import androidx.core.graphics.Insets;
+import androidx.core.view.ViewCompat;
+import androidx.core.view.WindowInsetsCompat;
+import androidx.recyclerview.widget.LinearLayoutManager;
+import androidx.recyclerview.widget.RecyclerView;
+
+import com.google.android.material.floatingactionbutton.FloatingActionButton;
+
+import org.thoughtcrime.securesms.connect.DcHelper;
+import org.thoughtcrime.securesms.util.Util;
+
+import java.util.List;
+
+import chat.delta.rpc.Rpc;
+import chat.delta.rpc.RpcException;
+import chat.delta.rpc.types.EnteredLoginParam;
+
+public class TransportListActivity extends BaseActionBarActivity
+        implements TransportListAdapter.OnTransportClickListener {
+
+    public static final String EXTRA_TRANSPORT_ADDR = "transport_addr";
+
+    private RecyclerView recyclerView;
+    private TransportListAdapter adapter;
+    private FloatingActionButton fabAdd;
+    private Rpc rpc;
+    private int accId;
+    private String mainTransportAddr;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_transport_list);
+
+        rpc = DcHelper.getRpc(this);
+        accId = DcHelper.getContext(this).getAccountId();
+
+        // Setup toolbar
+        Toolbar toolbar = findViewById(R.id.toolbar);
+        setSupportActionBar(toolbar);
+        if (getSupportActionBar() != null) {
+            getSupportActionBar().setTitle(R.string.transports);
+            getSupportActionBar().setDisplayHomeAsUpEnabled(true);
+        }
+
+        recyclerView = findViewById(R.id.transport_list);
+        fabAdd = findViewById(R.id.fab_add_transport);
+
+        adapter = new TransportListAdapter(this);
+        recyclerView.setLayoutManager(new LinearLayoutManager(this));
+        recyclerView.setAdapter(adapter);
+
+        fabAdd.setOnClickListener(v -> openAddTransport());
+
+        // Handle window insets for FAB to stay above navigation bar
+        ViewCompat.setOnApplyWindowInsetsListener(fabAdd, (v, windowInsets) -> {
+            Insets insets = windowInsets.getInsets(WindowInsetsCompat.Type.systemBars());
+            CoordinatorLayout.LayoutParams fabParams = (CoordinatorLayout.LayoutParams) fabAdd.getLayoutParams();
+            int fabMargin = (int) (16 * getResources().getDisplayMetrics().density);
+            fabParams.bottomMargin = insets.bottom + fabMargin;
+            fabParams.rightMargin = fabMargin;
+            fabAdd.setLayoutParams(fabParams);
+            return windowInsets;
+        });
+
+        loadTransports();
+    }
+
+    @Override
+    protected void onResume() {
+        super.onResume();
+        loadTransports();
+    }
+
+    private void loadTransports() {
+        Util.runOnBackground(() -> {
+            try {
+                List<EnteredLoginParam> transports = rpc.listTransports(accId);
+                mainTransportAddr = DcHelper.get(this, DcHelper.CONFIG_CONFIGURED_ADDRESS);
+                Util.runOnMain(() -> adapter.setTransports(transports, mainTransportAddr));
+            } catch (RpcException e) {
+                mainTransportAddr = DcHelper.get(this, DcHelper.CONFIG_CONFIGURED_ADDRESS);
+                Util.runOnMain(() -> adapter.setTransports(null, mainTransportAddr));
+            }
+        });
+    }
+
+    private void openAddTransport() {
+        Intent intent = new Intent(this, EditTransportActivity.class);
+        startActivity(intent);
+    }
+
+    @Override
+    public void onTransportClick(EnteredLoginParam transport) {
+        // Clicking on a transport makes it the main transport
+        if (transport.addr != null && !transport.addr.equals(mainTransportAddr)) {
+            Util.runOnBackground(() -> {
+                DcHelper.getContext(this).setConfig(DcHelper.CONFIG_CONFIGURED_ADDRESS, transport.addr);
+                Util.runOnMain(this::loadTransports);
+            });
+        }
+    }
+
+    @Override
+    public void onTransportEdit(EnteredLoginParam transport) {
+        Intent intent = new Intent(this, EditTransportActivity.class);
+        intent.putExtra(EXTRA_TRANSPORT_ADDR, transport.addr);
+        startActivity(intent);
+    }
+
+    @Override
+    public void onTransportDelete(EnteredLoginParam transport) {
+        new AlertDialog.Builder(this)
+                .setTitle(R.string.remove_transport)
+                .setMessage(getString(R.string.confirm_remove_transport, transport.addr))
+                .setPositiveButton(R.string.ok, (dialog, which) -> deleteTransport(transport))
+                .setNegativeButton(R.string.cancel, null)
+                .show();
+    }
+
+    private void deleteTransport(EnteredLoginParam transport) {
+        Util.runOnBackground(() -> {
+            try {
+                rpc.deleteTransport(accId, transport.addr);
+                Util.runOnMain(this::loadTransports);
+            } catch (RpcException e) {
+                Util.runOnMain(() -> {
+                    new AlertDialog.Builder(this)
+                            .setMessage(getString(R.string.error) + ": " + e.getMessage())
+                            .setPositiveButton(R.string.ok, null)
+                            .show();
+                });
+            }
+        });
+    }
+
+    @Override
+    public boolean onOptionsItemSelected(@NonNull MenuItem item) {
+        if (item.getItemId() == android.R.id.home) {
+            finish();
+            return true;
+        }
+        return super.onOptionsItemSelected(item);
+    }
+}

src/main/java/org/thoughtcrime/securesms/TransportListAdapter.java

@@ -0,0 +1,106 @@
+package org.thoughtcrime.securesms;
+
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.ImageView;
+import android.widget.TextView;
+
+import androidx.annotation.NonNull;
+import androidx.recyclerview.widget.RecyclerView;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import chat.delta.rpc.types.EnteredLoginParam;
+
+public class TransportListAdapter extends RecyclerView.Adapter<TransportListAdapter.TransportViewHolder> {
+
+    private List<EnteredLoginParam> transports = new ArrayList<>();
+    private final OnTransportClickListener listener;
+    private String mainTransportAddr;
+
+    public interface OnTransportClickListener {
+        void onTransportClick(EnteredLoginParam transport);
+        void onTransportEdit(EnteredLoginParam transport);
+        void onTransportDelete(EnteredLoginParam transport);
+    }
+
+    public TransportListAdapter(OnTransportClickListener listener) {
+        this.listener = listener;
+    }
+
+    public void setTransports(List<EnteredLoginParam> transports, String mainTransportAddr) {
+        this.transports = transports != null ? transports : new ArrayList<>();
+        this.mainTransportAddr = mainTransportAddr;
+        notifyDataSetChanged();
+    }
+
+    @NonNull
+    @Override
+    public TransportViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
+        View view = LayoutInflater.from(parent.getContext())
+                .inflate(R.layout.transport_list_item, parent, false);
+        return new TransportViewHolder(view);
+    }
+
+    @Override
+    public void onBindViewHolder(@NonNull TransportViewHolder holder, int position) {
+        EnteredLoginParam transport = transports.get(position);
+        boolean isMain = transport.addr != null && transport.addr.equals(mainTransportAddr);
+        holder.bind(transport, isMain, listener);
+    }
+
+    @Override
+    public int getItemCount() {
+        return transports.size();
+    }
+
+    static class TransportViewHolder extends RecyclerView.ViewHolder {
+        private final TextView emailText;
+        private final TextView serverText;
+        private final ImageView mainIndicator;
+        private final ImageView editButton;
+        private final ImageView deleteButton;
+
+        public TransportViewHolder(@NonNull View itemView) {
+            super(itemView);
+            emailText = itemView.findViewById(R.id.transport_email);
+            serverText = itemView.findViewById(R.id.transport_server);
+            mainIndicator = itemView.findViewById(R.id.main_transport_indicator);
+            editButton = itemView.findViewById(R.id.edit_button);
+            deleteButton = itemView.findViewById(R.id.delete_button);
+        }
+
+        public void bind(EnteredLoginParam transport, boolean isMain, OnTransportClickListener listener) {
+            emailText.setText(transport.addr);
+            
+            String serverInfo = "";
+            if (transport.imapServer != null && !transport.imapServer.isEmpty()) {
+                serverInfo = transport.imapServer;
+            }
+            serverText.setText(serverInfo);
+            serverText.setVisibility(serverInfo.isEmpty() ? View.GONE : View.VISIBLE);
+
+            mainIndicator.setVisibility(isMain ? View.VISIBLE : View.GONE);
+
+            itemView.setOnClickListener(v -> {
+                if (listener != null) {
+                    listener.onTransportClick(transport);
+                }
+            });
+
+            editButton.setOnClickListener(v -> {
+                if (listener != null) {
+                    listener.onTransportEdit(transport);
+                }
+            });
+
+            deleteButton.setOnClickListener(v -> {
+                if (listener != null) {
+                    listener.onTransportDelete(transport);
+                }
+            });
+        }
+    }
+}

src/main/java/org/thoughtcrime/securesms/preferences/AdvancedPreferenceFragment.java

@@ -31,7 +31,7 @@ import org.thoughtcrime.securesms.ApplicationPreferencesActivity;
 import org.thoughtcrime.securesms.ConversationActivity;
 import org.thoughtcrime.securesms.LogViewActivity;
 import org.thoughtcrime.securesms.R;
-import org.thoughtcrime.securesms.EditTransportActivity;
+import org.thoughtcrime.securesms.TransportListActivity;
 import org.thoughtcrime.securesms.connect.DcEventCenter;
 import org.thoughtcrime.securesms.connect.DcHelper;
 import org.thoughtcrime.securesms.proxy.ProxySettingsActivity;
@@ -166,7 +166,7 @@ public class AdvancedPreferenceFragment extends ListSummaryPreferenceFragment
       passwordAndAccount.setOnPreferenceClickListener(((preference) -> {
         boolean result = ScreenLockUtil.applyScreenLock(requireActivity(), getString(R.string.edit_transport), getString(R.string.enter_system_secret_to_continue), REQUEST_CODE_CONFIRM_CREDENTIALS_ACCOUNT);
         if (!result) {
-          openRegistrationActivity();
+          openTransportListActivity();
         }
         return true;
       }));
@@ -203,7 +203,7 @@ public class AdvancedPreferenceFragment extends ListSummaryPreferenceFragment
   public void onActivityResult(int requestCode, int resultCode, Intent data) {
     super.onActivityResult(requestCode, resultCode, data);
     if (resultCode == RESULT_OK && requestCode == REQUEST_CODE_CONFIRM_CREDENTIALS_ACCOUNT) {
-      openRegistrationActivity();
+      openTransportListActivity();
     }
   }
 
@@ -270,8 +270,8 @@ public class AdvancedPreferenceFragment extends ListSummaryPreferenceFragment
     }
   }
 
-  private void openRegistrationActivity() {
-    Intent intent = new Intent(requireActivity(), EditTransportActivity.class);
+  private void openTransportListActivity() {
+    Intent intent = new Intent(requireActivity(), TransportListActivity.class);
     startActivity(intent);
   }
 

src/main/res/layout/activity_transport_list.xml

@@ -0,0 +1,49 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.coordinatorlayout.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:id="@+id/coordinator_layout"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:fitsSystemWindows="true"
+    android:background="?attr/colorPrimary">
+
+    <com.google.android.material.appbar.AppBarLayout
+        android:id="@+id/app_bar_layout"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:fitsSystemWindows="true"
+        app:elevation="0dp">
+
+        <androidx.appcompat.widget.Toolbar
+            android:id="@+id/toolbar"
+            android:layout_width="match_parent"
+            android:layout_height="?attr/actionBarSize"
+            android:minHeight="?attr/actionBarSize"
+            android:background="?attr/colorPrimary"
+            app:contentInsetStart="14dp"
+            app:contentInsetLeft="14dp"
+            android:theme="?attr/actionBarStyle" />
+
+    </com.google.android.material.appbar.AppBarLayout>
+
+    <androidx.recyclerview.widget.RecyclerView
+        android:id="@+id/transport_list"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:background="?android:attr/windowBackground"
+        android:clipToPadding="false"
+        android:scrollbars="vertical"
+        app:layout_behavior="@string/appbar_scrolling_view_behavior"
+        tools:listitem="@layout/transport_list_item" />
+
+    <com.google.android.material.floatingactionbutton.FloatingActionButton
+        android:id="@+id/fab_add_transport"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_gravity="end|bottom"
+        android:layout_margin="16dp"
+        android:contentDescription="@string/add_transport"
+        android:src="@drawable/ic_add_white_24dp" />
+
+</androidx.coordinatorlayout.widget.CoordinatorLayout>

src/main/res/layout/transport_list_item.xml

@@ -0,0 +1,71 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:orientation="horizontal"
+    android:padding="16dp"
+    android:background="?attr/selectableItemBackground"
+    android:minHeight="72dp"
+    android:gravity="center_vertical">
+
+    <ImageView
+        android:id="@+id/main_transport_indicator"
+        android:layout_width="24dp"
+        android:layout_height="24dp"
+        android:layout_marginEnd="16dp"
+        android:layout_marginRight="16dp"
+        android:src="@drawable/ic_check_white_24dp"
+        android:tint="?attr/colorPrimary"
+        android:contentDescription="@string/main"
+        android:visibility="gone"
+        tools:visibility="visible" />
+
+    <LinearLayout
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:layout_weight="1"
+        android:orientation="vertical">
+
+        <TextView
+            android:id="@+id/transport_email"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:textAppearance="?android:attr/textAppearanceMedium"
+            android:textSize="16sp"
+            android:textColor="?android:attr/textColorPrimary"
+            tools:text="user@example.com" />
+
+        <TextView
+            android:id="@+id/transport_server"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="4dp"
+            android:textAppearance="?android:attr/textAppearanceSmall"
+            android:textSize="14sp"
+            android:textColor="?android:attr/textColorSecondary"
+            tools:text="imap.example.com" />
+
+    </LinearLayout>
+
+    <ImageView
+        android:id="@+id/edit_button"
+        android:layout_width="48dp"
+        android:layout_height="48dp"
+        android:padding="12dp"
+        android:src="@drawable/ic_create_white_24dp"
+        android:background="?attr/selectableItemBackgroundBorderless"
+        android:contentDescription="@string/edit_transport"
+        android:tint="?android:attr/textColorSecondary" />
+
+    <ImageView
+        android:id="@+id/delete_button"
+        android:layout_width="48dp"
+        android:layout_height="48dp"
+        android:padding="12dp"
+        android:src="@drawable/ic_delete_white_24dp"
+        android:background="?attr/selectableItemBackgroundBorderless"
+        android:contentDescription="@string/remove_transport"
+        android:tint="?android:attr/textColorSecondary" />
+
+</LinearLayout>

src/main/res/values/strings.xml

@@ -693,6 +693,7 @@
     <string name="add_transport">Add Transport</string>
     <string name="remove_transport">Remove Transport</string>
     <string name="edit_transport">Edit Transport</string>
+    <string name="main">Main</string>
     <!-- shown if a QR code was scanned that can be used as a transport -->
     <string name="confirm_add_transport">Add this transport?</string>
     <string name="invalid_transport_qr">The scanned QR code does not contain a valid transport.</string>