conversation details: prevent modification by non-ui thread

Change-Id: Iece38d834e97e99bc00ec61f4e450ffc517365e0

ring-android/app/src/main/java/cx/ring/client/ContactDetailsActivity.kt

@@ -49,6 +49,7 @@ import cx.ring.utils.ConversationPath
 import cx.ring.views.AvatarDrawable
 import cx.ring.views.AvatarFactory
 import dagger.hilt.android.AndroidEntryPoint
+import io.reactivex.rxjava3.android.schedulers.AndroidSchedulers
 import io.reactivex.rxjava3.core.Single
 import io.reactivex.rxjava3.disposables.CompositeDisposable
 import net.jami.model.*
@@ -253,12 +254,13 @@ class ContactDetailsActivity : AppCompatActivity() {
         colorActionPosition = 0
         symbolActionPosition = 1
 
-        mDisposableBag.add(mConversationFacade.observeConversation(conversation).subscribe { vm ->
+        mDisposableBag.add(mConversationFacade.observeConversation(conversation)
+            .observeOn(AndroidSchedulers.mainThread())
+            .subscribe { vm ->
                 binding.contactImage.setImageDrawable(AvatarDrawable.Builder()
                     .withViewModel(vm)
                     .withCircleCrop(true)
                     .build(this))
-
                 supportActionBar?.title = vm.title
                 binding.contactListLayout.visibility =
                     if (conversation.isSwarm) View.VISIBLE else View.GONE

ring-android/app/src/main/res/layout/activity_contact_details.xml

@@ -112,10 +112,11 @@
                     android:text="@string/conversation_members" />
 
                 <androidx.recyclerview.widget.RecyclerView
+                    android:clipToPadding="false"
+                    android:paddingHorizontal="16dp"
                     android:id="@+id/contact_list"
-                    android:layout_width="wrap_content"
+                    android:layout_width="match_parent"
                     android:layout_height="wrap_content"
-                    android:layout_marginHorizontal="8dp"
                     android:orientation="horizontal"
                     app:layoutManager="androidx.recyclerview.widget.LinearLayoutManager"
                     tools:itemCount="4"