MainActivity.kt
package com.example.jetpack
import android.os.Bundle
import android.view.View
import androidx.appcompat.app.AppCompatActivity
import kotlinx.android.synthetic.main.activity_main.*
class MainActivity : AppCompatActivity() {
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
}
fun onRadioButtonClicked(view: View) {
when(view.id){
R.id.radioFlash ->{
textView2.text = "Flash clicked."
}R.id.radioFlex ->{
textView2.text = "Flex clicked."
}R.id.radioColdFusion->{
textView2.text = "ColdFusion clicked."
}R.id.radioPhotoshop->{
textView2.text = "Photoshop clicked."
}
}
}
}
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.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"
tools:context=".MainActivity"
android:background="#F5F5F5">
<TextView
android:id="@+id/textView"
style="@style/TextAppearance.MaterialComponents.Headline6"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginTop="16dp"
android:padding="8dp"
android:text="Which is your most favorite?"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<RadioGroup
android:id="@+id/radioGroup"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginStart="32dp"
android:layout_marginTop="2dp"
android:layout_marginEnd="16dp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/textView">
<com.google.android.material.radiobutton.MaterialRadioButton
android:id="@+id/radioFlash"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:onClick="onRadioButtonClicked"
android:text="Flash" />
<com.google.android.material.radiobutton.MaterialRadioButton
android:id="@+id/radioFlex"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:onClick="onRadioButtonClicked"
android:text="Flex" />
<com.google.android.material.radiobutton.MaterialRadioButton
android:id="@+id/radioColdFusion"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:onClick="onRadioButtonClicked"
android:text="ColdFusion" />
<com.google.android.material.radiobutton.MaterialRadioButton
android:id="@+id/radioPhotoshop"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:onClick="onRadioButtonClicked"
android:text="Photoshop" />
</RadioGroup>
<TextView
android:id="@+id/textView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="16dp"
tools:text="TextView"
android:textColor="#483D8B"
style="@style/TextAppearance.MaterialComponents.Headline5"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/radioGroup" />
</androidx.constraintlayout.widget.ConstraintLayout>


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