adding some animations

app/src/main/kotlin/com/simplemobiletools/smsmessenger/activities/MainActivity.kt

@@ -247,6 +247,7 @@ class MainActivity : SimpleActivity() {
                 conversations_list.adapter = this
             }
 
+            conversations_list.scheduleLayoutAnimation()
             conversations_fastscroller.setViews(conversations_list) {
                 val listItem = (conversations_list.adapter as? ConversationsAdapter)?.conversations?.getOrNull(it)
                 conversations_fastscroller.updateBubbleText(listItem?.title ?: "")

app/src/main/kotlin/com/simplemobiletools/smsmessenger/activities/NewConversationActivity.kt

@@ -138,24 +138,31 @@ class NewConversationActivity : SimpleActivity() {
             no_contacts_placeholder.text = getString(placeholderText)
         }
 
-        ContactsAdapter(this, contacts, contacts_list, null) {
-            hideKeyboard()
-            val contact = it as SimpleContact
-            val phoneNumbers = contact.phoneNumbers
-            if (phoneNumbers.size > 1) {
-                val items = ArrayList<RadioItem>()
-                phoneNumbers.forEachIndexed { index, phoneNumber ->
-                    items.add(RadioItem(index, phoneNumber, phoneNumber))
-                }
+        val currAdapter = contacts_list.adapter
+        if (currAdapter == null) {
+            ContactsAdapter(this, contacts, contacts_list, null) {
+                hideKeyboard()
+                val contact = it as SimpleContact
+                val phoneNumbers = contact.phoneNumbers
+                if (phoneNumbers.size > 1) {
+                    val items = ArrayList<RadioItem>()
+                    phoneNumbers.forEachIndexed { index, phoneNumber ->
+                        items.add(RadioItem(index, phoneNumber, phoneNumber))
+                    }
 
-                RadioGroupDialog(this, items) {
-                    launchThreadActivity(it as String, contact.name)
+                    RadioGroupDialog(this, items) {
+                        launchThreadActivity(it as String, contact.name)
+                    }
+                } else {
+                    launchThreadActivity(phoneNumbers.first(), contact.name)
                 }
-            } else {
-                launchThreadActivity(phoneNumbers.first(), contact.name)
+            }.apply {
+                contacts_list.adapter = this
             }
-        }.apply {
-            contacts_list.adapter = this
+
+            contacts_list.scheduleLayoutAnimation()
+        } else {
+            (currAdapter as ContactsAdapter).updateContacts(contacts)
         }
 
         setupLetterFastscroller(contacts)

app/src/main/kotlin/com/simplemobiletools/smsmessenger/adapters/ContactsAdapter.kt

@@ -17,8 +17,10 @@ import com.simplemobiletools.smsmessenger.R
 import com.simplemobiletools.smsmessenger.activities.SimpleActivity
 import java.util.*
 
-class ContactsAdapter(activity: SimpleActivity, var contacts: ArrayList<SimpleContact>, recyclerView: MyRecyclerView, fastScroller: FastScroller?,
-                      itemClick: (Any) -> Unit) : MyRecyclerViewAdapter(activity, recyclerView, fastScroller, itemClick) {
+class ContactsAdapter(
+    activity: SimpleActivity, var contacts: ArrayList<SimpleContact>, recyclerView: MyRecyclerView, fastScroller: FastScroller?,
+    itemClick: (Any) -> Unit
+) : MyRecyclerViewAdapter(activity, recyclerView, fastScroller, itemClick) {
     private var fontSize = activity.getTextSize()
 
     override fun getActionMenuId() = 0
@@ -51,10 +53,12 @@ class ContactsAdapter(activity: SimpleActivity, var contacts: ArrayList<SimpleCo
 
     override fun getItemCount() = contacts.size
 
-    override fun onViewRecycled(holder: ViewHolder) {
-        super.onViewRecycled(holder)
-        if (!activity.isDestroyed && !activity.isFinishing) {
-            Glide.with(activity).clear(holder.itemView.findViewById<ImageView>(R.id.item_contact_image))
+    fun updateContacts(newContacts: ArrayList<SimpleContact>) {
+        val oldHashCode = contacts.hashCode()
+        val newHashCode = newContacts.hashCode()
+        if (newHashCode != oldHashCode) {
+            contacts = newContacts
+            notifyDataSetChanged()
         }
     }
 
@@ -75,4 +79,11 @@ class ContactsAdapter(activity: SimpleActivity, var contacts: ArrayList<SimpleCo
             SimpleContactsHelper(context).loadContactImage(contact.photoUri, findViewById(R.id.item_contact_image), contact.name)
         }
     }
+
+    override fun onViewRecycled(holder: ViewHolder) {
+        super.onViewRecycled(holder)
+        if (!activity.isDestroyed && !activity.isFinishing) {
+            Glide.with(activity).clear(holder.itemView.findViewById<ImageView>(R.id.item_contact_image))
+        }
+    }
 }

app/src/main/res/layout/activity_main.xml

@@ -43,6 +43,7 @@
             android:layout_width="match_parent"
             android:layout_height="match_parent"
             android:clipToPadding="false"
+            android:layoutAnimation="@anim/layout_animation"
             android:overScrollMode="ifContentScrolls"
             android:scrollbars="none"
             app:layoutManager="com.simplemobiletools.commons.views.MyLinearLayoutManager" />

app/src/main/res/layout/activity_new_conversation.xml

@@ -101,6 +101,7 @@
         android:layout_height="match_parent"
         android:layout_below="@+id/suggestions_scrollview"
         android:clipToPadding="false"
+        android:layoutAnimation="@anim/layout_animation"
         android:overScrollMode="ifContentScrolls"
         android:scrollbars="none"
         app:layoutManager="com.simplemobiletools.commons.views.MyLinearLayoutManager" />