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Output

Tutorialwing Kotlin CalendarView Output
Getting Started
Android CalendarView can be defined as below –
CalendarView is a widget that are used to display and select date.
Different Attributes of Android CalendarView Widget
Some of the popular attributes of android CalendarView widget are –
Sr. | XML Attributes | Description |
---|---|---|
1 | android:dateTextAppearance | The text appearance for the day numbers in the calendar grid |
2 | android:firstDayOfWeek | Specifies first day of the calendar |
3 | android:maxDate | Specifies maximal date shown in calendar view in mm/dd/yyyy format |
4 | android:minDate | Specifies minimal date shown in calendar view in mm/dd/yyyy format |
Some of the popular attributes of android calendarView widget inherited from FrameLayout are –
Sr. | XML Attributes | Description |
---|---|---|
1 | android:foregroundGravity | Specifies the gravity to apply to the foreground drawable |
2 | android:measureAllChildren | Specifies whether to measure all children or only those in VISIBLE or INVISIBLE state when measuring |
Some of the popular attributes of android calendarView inherited from viewGroup are –
Sr. | XML Attributes | Description |
---|---|---|
1 | android:animateLayoutChanges | Defines whether to run layout transition when there is any change in layout |
2 | android:animationCache | Defines whether to create drawing cache for children by layout animation |
3 | android:clipToPadding | Defines whether the ViewGroup will clip its children and resize (but not clip) any EdgeEffect to its padding, if padding is not zero |
4 | android:layoutAnimation | Defines the layout animation to be used when the viewGroup is laid out for the first time |
5 | android:layoutMode | Specifies the layout mode of the viewGroup |
Some of the popular attributes of android calendarView inherited from View are –
Sr. | XML Attributes | Description |
---|---|---|
1 | android:alpha | Defines alpha to the view |
2 | android:background | Defines drawable to the background |
3 | android:backgroundTint | Defines tint to apply to the background |
4 | android:clickable | Defines whether the view is clickable or not |
5 | android:elevation | Defines elevation of the view |
6 | android:focusable | Defines whether this view can take focus or not |
7 | android:id | Defines id of the view |
8 | android:visibility | Defines the visibility(VISIBLE, INVISIBLE, GONE) of the view |
Example of Android CalendarView Using Kotlin
At first, we will create android application. Then, we will use calendarView using kotlin in the application.
1. Creating New Project in Kotlin
Follow steps below to create new project. Please ignore the steps if you have already created the project.
Step | Description |
---|---|
1. | Open Android Studio. |
2. | Go to File => New => New Project. Write application name as CalendarView. 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. | You will get a newly created project successfully if you have followed steps properly. |
Since we have a project now, we will modify xml and other files to use calendarView using kotlin in the application.
2. Modify values folder
No values folders have been modified. So, we are not going to mention them here.
3. Use CalendarView Widget in xml file
Open src/main/res/layout/activity_main.xml file and add below code into it.
<?xml version="1.0" encoding="utf-8"?> <LinearLayout 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"> <CalendarView android:id="@+id/calendarView" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginBottom="50dp" android:layout_marginLeft="50dp" android:layout_marginRight="50dp"/> </LinearLayout>
In activity_main.xml file, we have defined calendarView widget. Now, we will access this calendarView using kotlin file to perform some operations on it.
4. Access CalendarView Widget in Kotlin file
Open src/main/java/com.tutorialwing.calendarview/MainActivity.kt file and add below code into it.
package com.tutorialwing.calendarview import android.os.Bundle import android.support.v7.app.AppCompatActivity import android.widget.CalendarView import android.widget.Toast class MainActivity : AppCompatActivity() { override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) setContentView(R.layout.activity_main) val calendarView = findViewById<CalendarView>(R.id.calendarView) 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() } } }
We have accessed calendarView using kotlin file (i.e. MainActivity.kt file) in the application. Then, we have set date change listener to display selected date as toast message in the application.
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 main/AndroidManifest.xml file is as below.
<?xml version="1.0" encoding="utf-8"?> <manifest package="com.tutorialwing.calendarview" 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 Android calendarView using Kotlin.