launch the NewMessageActivity on pressing FAB

app/src/main/AndroidManifest.xml

@@ -36,7 +36,10 @@
             android:name=".activities.ThreadActivity"
             android:parentActivityName=".activities.MainActivity" />
 
-        <activity android:name=".activities.NewMessageActivity">
+        <activity
+            android:name=".activities.NewMessageActivity"
+            android:parentActivityName=".activities.MainActivity">
+
             <intent-filter>
                 <action android:name="android.intent.action.SEND" />
                 <action android:name="android.intent.action.SENDTO" />

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

@@ -61,6 +61,12 @@ class MainActivity : SimpleActivity() {
                 startActivityForResult(intent, MAKE_DEFAULT_APP_REQUEST)
             }
         }
+
+        messages_fab.setOnClickListener {
+            Intent(this, NewMessageActivity::class.java).apply {
+                startActivity(this)
+            }
+        }
     }
 
     override fun onResume() {

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

@@ -19,5 +19,6 @@ class NewMessageActivity : SimpleActivity() {
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         setContentView(R.layout.activity_new_message)
+        title = getString(R.string.create_new_message)
     }
 }

app/src/main/res/values/strings.xml

@@ -3,6 +3,7 @@
     <string name="app_launcher_name">SMS Messenger</string>
     <string name="type_a_message">Type a message…</string>
     <string name="message_not_sent">Message has not been sent.</string>
+    <string name="create_new_message">Create new message</string>
 
     <!-- Notifications -->
     <string name="channel_received_sms">Received SMS</string>