Kotlin Example Code
Here we are going to share sample code for Using Kotlin making sum of two numbers.
You can Download Sample Code Download Here
Code Here like below.
Here we are going to share sample code for Using Kotlin making sum of two numbers.
You can Download Sample Code Download Here
Code Here like below.
MainActivity.kt
package com.ksample import android.content.Context import android.support.v7.app.AppCompatActivity import android.os.Bundle import android.view.View import android.widget.Button import android.widget.EditText import android.widget.TextView import android.widget.Toast import org.w3c.dom.Text class MainActivity : AppCompatActivity() { //Widget lateinit var btnSum: Button; lateinit var txtSum: TextView; lateinit var edtNo1: EditText; lateinit var edtNo2: EditText; //Context lateinit var mcontext: Context //Variables var number1 = 0; var number2 = 0; var sum = 0; override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) setContentView(R.layout.activity_main) mcontext = this; btnSum = findViewById(R.id.btntest); edtNo1 = findViewById(R.id.edtNo1); edtNo2 = findViewById(R.id.edtNo2); txtSum = findViewById(R.id.txtSum); btnSum.setOnClickListener(object : View.OnClickListener{ override fun onClick(v: View?) { //Your code herenumber1 = Integer.parseInt(edtNo1.getText().toString()); number2 = Integer.parseInt(edtNo2.getText().toString()); sum= number1+number2; txtSum.setText(""+sum) Toast.makeText(mcontext,"Clicke Button"+sum,Toast.LENGTH_LONG).show() } }); } }
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:padding="10dp"
tools:context=".MainActivity">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="No 1"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
android:textColor="@android:color/holo_orange_dark"/>
<EditText
android:id="@+id/edtNo1"
android:layout_marginLeft="20dp"
android:layout_width="204dp"
android:inputType="number"
android:layout_height="69dp"/>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="No 2"
android:textColor="@android:color/holo_orange_dark"/>
<EditText
android:id="@+id/edtNo2"
android:layout_width="200dp"
android:layout_marginLeft="20dp"
android:inputType="number"
android:layout_height="wrap_content"/>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:layout_marginTop="5dp">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Sum :"
android:textColor="@android:color/holo_orange_dark"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.134"/>
<TextView
android:id="@+id/txtSum"
android:layout_width="200dp"
android:layout_height="wrap_content"
android:text="0.0"
android:layout_marginLeft="20dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintHorizontal_bias="0.16"
app:layout_constraintVertical_bias="0.134"/>
</LinearLayout>
<Button
android:text="Sum"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="20dp"
android:background="@android:color/holo_orange_dark"
android:textColor="@android:color/white"
android:id="@+id/btntest"/>
</LinearLayout>
build.gradle(Module:app)apply plugin: 'com.android.application' apply plugin: 'kotlin-android' apply plugin: 'kotlin-android-extensions' android { compileSdkVersion 28 defaultConfig { applicationId "com.ksample" minSdkVersion 15 targetSdkVersion 28 versionCode 1 versionName "1.0" testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner" } buildTypes { release { minifyEnabled false proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro' } } } dependencies { implementation fileTree(dir: 'libs', include: ['*.jar']) implementation"org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version" implementation 'com.android.support:appcompat-v7:28.0.0' implementation 'com.android.support.constraint:constraint-layout:1.1.3' testImplementation 'junit:junit:4.12' androidTestImplementation 'com.android.support.test:runner:1.0.2' androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2' }build.gradle(Project:Ksample)buildscript { ext.kotlin_version = '1.3.21' repositories { google() jcenter() } dependencies { classpath 'com.android.tools.build:gradle:3.4.0' classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version" // NOTE: Do not place your application dependencies here; they belong // in the individual module build.gradle files } } allprojects { repositories { google() jcenter() } } task clean(type: Delete) { delete rootProject.buildDir }
