activity_main.xml
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<?xml version="1.0" encoding="utf-8"?> <LinearLayout 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" android:orientation="vertical" tools:context=".MainActivity"> <LinearLayout android:id="@+id/linearLayout" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical"> </LinearLayout> </LinearLayout> |
MainActivity.kt
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package com.phaisarn.ktapplication import android.support.v7.app.AppCompatActivity import android.os.Bundle import android.view.View import android.widget.RadioButton import android.widget.RadioGroup import kotlinx.android.synthetic.main.activity_main.* class MainActivity : AppCompatActivity() { override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) setContentView(R.layout.activity_main) val options = arrayOf("Mango", "Papaya", "Orange", "Apple") // create a radio group val radioGroup = RadioGroup(this) radioGroup.orientation = RadioGroup.VERTICAL for (i in options.indices) { // create a radio button val radioButton = RadioButton(this) // set text for the radio button radioButton.text = options[i] // assign an automatically generated id to the radio button radioButton.id = View.generateViewId() // add radio button to the radio group radioGroup.addView(radioButton) } // add radio group to the linear layout linearLayout.addView(radioGroup) } } |