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We have recently published 100+ articles on android tutorials with kotlin and java. If you need, you may visit Android Tutorial for beginners page. You can also check Kotlin Tutorial for beginners. Also, if you are interested in content writing, you can mail us at tutorialwing@gmail.com.Hello Readers! In this post, we are going to learn about how to use android calendarView programmatically in kotlin in the application. We will also learn how to add calendarView to linearLayout programmatically in android application.
Output

Tutorialwing Android Kotlin Dynamic CalendarView Output
Getting Started
At first, we will create android project. Then, we will create and use calendarView programmatically in kotlin file.
1. Creating New Project in Kotlin
Follow the steps below to create new project. Please ignore the steps if you have already created a new project.
Step | Description |
---|---|
1. | Open Android Studio. |
2. | Go to File => New => New Project. Write application name as DynamicCalendarView. Then, check Include Kotlin Support and click next button. |
3. | Select minimum SDK you need. However, we have selected 17 as minimum SDK. Then, click next button |
4. | Then, select Empty Activity => click next => click finish. |
5. | At this point, You will get a newly created android project successfully. |
Now, we will modify xml and kotlin file to use calendarView dynamically.
2. Modify Values Folder
No values folder have been modified. So, we are not going to mention them here.
3. Modify Layout Folder
Open res/layout/activity_main.xml file. Then, add below code into it.
<?xml version="1.0" encoding="utf-8"?> <LinearLayout android:id="@+id/rootContainer" xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:gravity="center" android:orientation="vertical"> </LinearLayout>
In activity_main.xml file, we have defined a linearLayout, with id rootContainer, that will act as container for the calendarView widget created programmatically in kotlin file.
4. Create Android CalendarView Programmatically / Dynamically in Kotlin
Open app/src/main/java/com.tutorialwing.dynamiccalendarview/MainActivity.kt file. Then, add below code into it.
package com.tutorialwing.dynamiccalendarview import android.os.Bundle import android.support.v7.app.AppCompatActivity import android.view.ViewGroup import android.widget.CalendarView import android.widget.LinearLayout import android.widget.Toast class MainActivity : AppCompatActivity() { override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) setContentView(R.layout.activity_main) val calendarView = CalendarView(this) val layoutParams = LinearLayout.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT) layoutParams.setMargins(90, 40, 80, 40) calendarView.layoutParams = layoutParams calendarView.setOnDateChangeListener { view, year, month, dayOfMonth -> //Note that months are indexed from 0. So, 0 means january, 1 means February, 2 means march etc. val msg = "Selected date is " + dayOfMonth + "/" + (month + 1) + "/" + year Toast.makeText(this@MainActivity, msg, Toast.LENGTH_SHORT).show() } val linearLayout = findViewById<LinearLayout>(R.id.rootContainer) linearLayout?.addView(calendarView) } }
We have created CalendarView programmatically in kotlin file (i.e. MainActivity.kt file) in the application. After that, we have set layout params, margins etc. in it. After that, we have set date change listener in calendarView that display selected date as toast message whenever there is any change in date selection in the calendarView. At last, we have added this calendarView widget in linearLayout having id rootContainer.
Since AndroidManifest.xml file is very important in any android application, we are also going to see the content inside this file.
AndroidManifest.xml file
Code inside src/main/AndroidManifest.xml file is –
<?xml version="1.0" encoding="utf-8"?> <manifest package="com.tutorialwing.dynamiccalendarview" xmlns:android="http://schemas.android.com/apk/res/android"> <application android:allowBackup="true" android:icon="@mipmap/ic_launcher" android:label="@string/app_name" android:roundIcon="@mipmap/ic_launcher_round" android:supportsRtl="true" android:theme="@style/AppTheme"> <activity android:name=".MainActivity"> <intent-filter> <action android:name="android.intent.action.MAIN"/> <category android:name="android.intent.category.LAUNCHER"/> </intent-filter> </activity> </application> </manifest>
When we run the program, we will get output as shown above.
That’s end of our tutorial on Creating Android CalendarView Programmatically in Kotlin.