Fix bug displaying an empty camera contacts search result.

res/layout/camera_contact_selection_fragment.xml

@@ -73,6 +73,7 @@
         android:id="@+id/camera_contacts_list"
         android:layout_width="match_parent"
         android:layout_height="0dp"
+        android:visibility="gone"
         app:layout_constraintBottom_toBottomOf="@id/camera_contacts_footer_barrier"
         app:layout_constraintTop_toBottomOf="@id/camera_contacts_toolbar" />
 

src/org/thoughtcrime/securesms/mediasend/CameraContactAdapter.java

@@ -119,8 +119,7 @@ class CameraContactAdapter extends SectionedRecyclerViewAdapter<String, CameraCo
 
   @Override
   public int getItemCount() {
-    int count = super.getItemCount();
+    return super.getItemCount() + 1;
-    return count > 0 ? count + 1 : 0;
   }
 
   public void setContacts(@NonNull CameraContacts contacts, @NonNull Collection<Recipient> selected) {
@@ -140,8 +139,7 @@ class CameraContactAdapter extends SectionedRecyclerViewAdapter<String, CameraCo
   }
 
   private boolean isInvitePosition(int globalPosition) {
-    int count = getItemCount();
+    return globalPosition == getItemCount() - 1;
-    return count > 0 && globalPosition == getItemCount() - 1;
   }
 
   public static class ContactSection extends SectionedRecyclerViewAdapter.Section<String> {

src/org/thoughtcrime/securesms/mediasend/CameraContactSelectionFragment.java

@@ -3,6 +3,7 @@ package org.thoughtcrime.securesms.mediasend;
 import android.content.Context;
 import android.content.Intent;
 import android.os.Bundle;
+import android.text.TextUtils;
 import android.view.LayoutInflater;
 import android.view.Menu;
 import android.view.MenuItem;
@@ -163,11 +164,13 @@ public class CameraContactSelectionFragment extends Fragment implements CameraCo
     contactViewModel.getContacts().observe(getViewLifecycleOwner(), contactState -> {
       if (contactState == null) return;
 
-      if (contactState.getContacts().isEmpty()) {
+      if (contactState.getContacts().isEmpty() && TextUtils.isEmpty(contactState.getQuery())) {
         cameraContactsEmpty.setVisibility(View.VISIBLE);
+        contactList.setVisibility(View.GONE);
         selectionFooterGroup.setVisibility(View.GONE);
       } else {
         cameraContactsEmpty.setVisibility(View.GONE);
+        contactList.setVisibility(View.VISIBLE);
 
         sendButton.setOnClickListener(v -> controller.onCameraContactsSendClicked(contactState.getSelected()));
 

src/org/thoughtcrime/securesms/mediasend/CameraContactSelectionViewModel.java

@@ -1,6 +1,7 @@
 package org.thoughtcrime.securesms.mediasend;
 
 import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
 import androidx.lifecycle.LiveData;
 import androidx.lifecycle.MutableLiveData;
 import androidx.lifecycle.ViewModel;
@@ -24,6 +25,8 @@ class CameraContactSelectionViewModel extends ViewModel {
   private final SingleLiveEvent<Error>        error;
   private final Set<Recipient>                selected;
 
+  private String currentQuery;
+
   private CameraContactSelectionViewModel(@NonNull CameraContactsRepository repository) {
     this.repository = repository;
     this.contacts   = new MutableLiveData<>();
@@ -32,7 +35,7 @@ class CameraContactSelectionViewModel extends ViewModel {
 
     repository.getCameraContacts(cameraContacts -> {
       Util.runOnMain(() -> {
-        contacts.postValue(new ContactState(cameraContacts, new ArrayList<>(selected)));
+        contacts.postValue(new ContactState(cameraContacts, new ArrayList<>(selected), currentQuery));
       });
     });
   }
@@ -50,9 +53,11 @@ class CameraContactSelectionViewModel extends ViewModel {
   }
 
   void onQueryUpdated(String query) {
+    this.currentQuery = query;
+
     repository.getCameraContacts(query, cameraContacts -> {
       Util.runOnMain(() -> {
-        contacts.postValue(new ContactState(cameraContacts, new ArrayList<>(selected)));
+        contacts.postValue(new ContactState(cameraContacts, new ArrayList<>(selected), query));
       });
     });
   }
@@ -60,7 +65,7 @@ class CameraContactSelectionViewModel extends ViewModel {
   void onRefresh() {
     repository.getCameraContacts(cameraContacts -> {
       Util.runOnMain(() -> {
-        contacts.postValue(new ContactState(cameraContacts, new ArrayList<>(selected)));
+        contacts.postValue(new ContactState(cameraContacts, new ArrayList<>(selected), currentQuery));
       });
     });
   }
@@ -77,17 +82,19 @@ class CameraContactSelectionViewModel extends ViewModel {
     ContactState currentState = contacts.getValue();
 
     if (currentState != null) {
-      contacts.setValue(new ContactState(currentState.getContacts(), new ArrayList<>(selected)));
+      contacts.setValue(new ContactState(currentState.getContacts(), new ArrayList<>(selected), currentQuery));
     }
   }
 
   static class ContactState {
-    private final CameraContacts contacts;
+    private final CameraContacts  contacts;
     private final List<Recipient> selected;
+    private final String          query;
 
-    ContactState(CameraContacts contacts, List<Recipient> selected) {
+    ContactState(@NonNull CameraContacts contacts, @NonNull List<Recipient> selected, @Nullable String query) {
       this.contacts = contacts;
       this.selected = selected;
+      this.query    = query;
     }
 
     public CameraContacts getContacts() {
@@ -97,6 +104,10 @@ class CameraContactSelectionViewModel extends ViewModel {
     public List<Recipient> getSelected() {
       return selected;
     }
+
+    public @Nullable String getQuery() {
+      return query;
+    }
   }
 
   enum Error {