Using Basic Activity (Kotlin) - Android Studio

In this tutorial we will learn how to use/create/add Basic Activity. We will use Kotlin Language.

Step 1: Create a New Project select "Basic Activity" OR Open Project & add Basic Activity File>New>Activity>Basic Activity

Step 2: Done , your code will look like

activity_main.xml

<?xml version="1.0" encoding="utf-8"?><android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:app="http://schemas.android.com/apk/res-auto"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"tools:context=".MainActivity"><android.support.design.widget.AppBarLayoutandroid:layout_width="match_parent"android:layout_height="wrap_content"android:theme="@style/AppTheme.AppBarOverlay"><android.support.v7.widget.Toolbarandroid:id="@+id/toolbar"android:layout_width="match_parent"android:layout_height="?attr/actionBarSize"android:background="?attr/colorPrimary"app:popupTheme="@style/AppTheme.PopupOverlay" /></android.support.design.widget.AppBarLayout><include layout="@layout/content_main" /><android.support.design.widget.FloatingActionButtonandroid:id="@+id/fab"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_gravity="bottom|end"android:layout_margin="@dimen/fab_margin"app:srcCompat="@android:drawable/ic_dialog_email" /></android.support.design.widget.CoordinatorLayout>

content_main.xml

<?xml version="1.0" encoding="utf-8"?><android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:app="http://schemas.android.com/apk/res-auto"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"app:layout_behavior="@string/appbar_scrolling_view_behavior"tools:context=".MainActivity"tools:showIn="@layout/activity_main"></android.support.constraint.ConstraintLayout>

MainActivity.kt

package com.blogspot.devofandroid.myapplicationimport android.os.Bundleimport android.support.design.widget.Snackbarimport android.support.v7.app.AppCompatActivityimport kotlinx.android.synthetic.main.activity_main.*class MainActivity : AppCompatActivity() {override fun onCreate(savedInstanceState: Bundle?) {super.onCreate(savedInstanceState)setContentView(R.layout.activity_main)setSupportActionBar(toolbar)fab.setOnClickListener { view ->Snackbar.make(view , "Replace with your own action" , Snackbar.LENGTH_LONG).setAction("Action" , null).show()}}}

Step 3: Run Project

Output