Disable the done button while the group is being created

res/layout/activity_create_closed_group.xml

@@ -57,7 +57,7 @@
 
         <Button
             style="@style/Widget.Session.Button.Common.ProminentOutline"
-            android:id="@+id/btnCreateNewPrivateChat"
+            android:id="@+id/createNewPrivateChatButton"
             android:layout_width="196dp"
             android:layout_height="@dimen/medium_button_height"
             android:layout_marginTop="@dimen/medium_spacing"

res/layout/activity_home.xml

@@ -123,7 +123,7 @@
 
             <Button
                 style="@style/Widget.Session.Button.Common.ProminentOutline"
-                android:id="@+id/btnCreateNewPrivateChat"
+                android:id="@+id/createNewPrivateChatButton"
                 android:layout_width="196dp"
                 android:layout_height="@dimen/medium_button_height"
                 android:layout_marginTop="@dimen/medium_spacing"

src/org/thoughtcrime/securesms/loki/activities/CreateClosedGroupActivity.kt

@@ -32,11 +32,10 @@ import org.whispersystems.libsignal.util.guava.Optional
 import java.lang.ref.WeakReference
 
 class CreateClosedGroupActivity : PassphraseRequiredActionBarActivity(), LoaderManager.LoaderCallbacks<List<String>> {
+    private var isLoading = false
+        set(newValue) { field = newValue; invalidateOptionsMenu() }
     private var members = listOf<String>()
-        set(value) {
+        set(value) { field = value; selectContactsAdapter.members = value }
-            field = value
-            selectContactsAdapter.members = value
-        }
 
     private val selectContactsAdapter by lazy {
         SelectContactsAdapter(this, GlideApp.with(this))
@@ -49,21 +48,17 @@ class CreateClosedGroupActivity : PassphraseRequiredActionBarActivity(), LoaderM
     // region Lifecycle
     override fun onCreate(savedInstanceState: Bundle?, isReady: Boolean) {
         super.onCreate(savedInstanceState, isReady)
-
         setContentView(R.layout.activity_create_closed_group)
         supportActionBar!!.title = resources.getString(R.string.activity_create_closed_group_title)
-
         recyclerView.adapter = this.selectContactsAdapter
         recyclerView.layoutManager = LinearLayoutManager(this)
-
+        createNewPrivateChatButton.setOnClickListener { createNewPrivateChat() }
-        btnCreateNewPrivateChat.setOnClickListener { createNewPrivateChat() }
-
         LoaderManager.getInstance(this).initLoader(0, null, this)
     }
 
     override fun onCreateOptionsMenu(menu: Menu?): Boolean {
         menuInflater.inflate(R.menu.menu_done, menu)
-        return members.isNotEmpty()
+        return members.isNotEmpty() && !isLoading
     }
     // endregion
 
@@ -91,7 +86,7 @@ class CreateClosedGroupActivity : PassphraseRequiredActionBarActivity(), LoaderM
     // region Interaction
     override fun onOptionsItemSelected(item: MenuItem): Boolean {
         when(item.itemId) {
-            R.id.doneButton -> createClosedGroup()
+            R.id.doneButton -> if (!isLoading) { createClosedGroup() }
         }
         return super.onOptionsItemSelected(item)
     }
@@ -125,9 +120,11 @@ class CreateClosedGroupActivity : PassphraseRequiredActionBarActivity(), LoaderM
             return Toast.makeText(this, R.string.activity_create_closed_group_too_many_group_members_error, Toast.LENGTH_LONG).show()
         }
         val userPublicKey = TextSecurePreferences.getLocalNumber(this)
+        isLoading = true
         loader.fadeIn()
         ClosedGroupsProtocol.createClosedGroup(this, name.toString(), selectedMembers + setOf( userPublicKey )).successUi { groupID ->
             loader.fadeOut()
+            isLoading = false
             val threadID = DatabaseFactory.getThreadDatabase(this).getThreadIdFor(Recipient.from(this, Address.fromSerialized(groupID), false))
             if (!isFinishing) {
                 openConversationActivity(this, threadID, Recipient.from(this, Address.fromSerialized(groupID), false))

src/org/thoughtcrime/securesms/loki/activities/HomeActivity.kt

@@ -125,7 +125,7 @@ class HomeActivity : PassphraseRequiredActionBarActivity, ConversationClickListe
         recyclerView.adapter = homeAdapter
         recyclerView.layoutManager = LinearLayoutManager(this)
         // Set up empty state view
-        btnCreateNewPrivateChat.setOnClickListener { createNewPrivateChat() }
+        createNewPrivateChatButton.setOnClickListener { createNewPrivateChat() }
         // This is a workaround for the fact that CursorRecyclerViewAdapter doesn't actually auto-update (even though it says it will)
         LoaderManager.getInstance(this).restartLoader(0, null, object : LoaderManager.LoaderCallbacks<Cursor> {