Added simple start button

app/src/main/java/com/example/myfirstapp/MainActivity.kt

@@ -1,7 +1,9 @@
 package com.example.myfirstapp
 
+import android.content.Intent
 import androidx.appcompat.app.AppCompatActivity
 import android.os.Bundle
+import android.view.View
 
 class MainActivity : AppCompatActivity() {
 
@@ -9,4 +11,9 @@ class MainActivity : AppCompatActivity() {
         super.onCreate(savedInstanceState)
         setContentView(R.layout.activity_main)
     }
+
+    fun startSession(view: View) {
+        val intent = Intent(this, MessageListActivity::class.java)
+        startActivity(intent)
+    }
 }

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

@@ -6,4 +6,14 @@
     android:layout_height="match_parent"
     tools:context=".MainActivity">
 
+    <Button
+        android:id="@+id/button"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:onClick="startSession"
+        android:text="@string/button_start_session"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
 </androidx.constraintlayout.widget.ConstraintLayout>

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

@@ -2,6 +2,7 @@
     <string name="app_name">My First App</string>
     <string name="edit_message">Enter a message</string>
     <string name="button_send">Send</string>
+    <string name="button_start_session">Start Troubleshooting</string>
     <string name="greeting">Welcome to the Interactive Troubleshooting. Please specify the component you have problems with.</string>
     <string name="select_problem">Please specify your problem.</string>
     <string name="okay">Okay</string>