Contoh Android RadioButton

RadioButton umumnya digunakan dengan RadioGroup. RadioGroup berisi beberapa tombol radio, menandai satu tombol radio yang dicentang maka akan membuat semua tombol radio lainnya tidak dicentang.

Contoh Android RadioButton

Dalam contoh ini, kita akan menerapkan tombol radio tunggal secara terpisah serta tombol radio di RadioGroup.

* activity_main.xml

File : 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"  
    android:layout_width="match_parent"  
    android:layout_height="match_parent"  
    android:orientation="vertical"  
    tools:context="example.android.com.radiobutton.MainActivity">  
 
    <TextView  
        android:id="@+id/textView1"  
        android:layout_width="fill_parent"  
        android:layout_height="wrap_content"  
        android:layout_marginTop="30dp"  
        android:gravity="center_horizontal"  
        android:textSize="22dp"  
        android:text="Single Radio Buttons" />  
 
 
 
    <!--   Default RadioButtons  -->  
 
    <RadioButton  
        android:id="@+id/radioButton1"  
        android:layout_width="fill_parent"  
        android:layout_height="wrap_content"  
        android:layout_gravity="center_horizontal"  
        android:text="Radio Button 1"  
        android:layout_marginTop="20dp"  
 
        android:textSize="20dp" />  
    <RadioButton  
        android:id="@+id/radioButton2"  
        android:layout_width="fill_parent"  
        android:layout_height="wrap_content"  
        android:text="Radio Button 2"  
        android:layout_marginTop="10dp"  
 
        android:textSize="20dp" />  
 
 
    <View  
        android:layout_width="fill_parent"  
        android:layout_height="1dp"  
        android:layout_marginTop="20dp"  
        android:background="#B8B894" />  
 
    <TextView  
        android:id="@+id/textView2"  
        android:layout_width="fill_parent"  
        android:layout_height="wrap_content"  
        android:layout_marginTop="30dp"  
        android:gravity="center_horizontal"  
        android:textSize="22dp"  
        android:text="Radio button inside RadioGroup" />  
 
 
    <!--   Customized RadioButtons  -->  
 
 
    <RadioGroup  
        android:layout_width="wrap_content"  
        android:layout_height="wrap_content"  
        android:id="@+id/radioGroup">  
 
        <RadioButton  
            android:id="@+id/radioMale"  
            android:layout_width="fill_parent"  
            android:layout_height="wrap_content"  
            android:text="  Male"  
            android:layout_marginTop="10dp"  
            android:checked="false"  
            android:textSize="20dp" />  
 
        <RadioButton  
            android:id="@+id/radioFemale"  
            android:layout_width="fill_parent"  
            android:layout_height="wrap_content"  
            android:text="   Female"  
            android:layout_marginTop="20dp"  
            android:checked="false"  
 
            android:textSize="20dp" />  
    </RadioGroup>  
 
    <Button  
        android:layout_width="wrap_content"  
        android:layout_height="wrap_content"  
        android:text="Show Selected"  
        android:id="@+id/button"  
        android:onClick="onclickbuttonMethod"  
        android:layout_gravity="center_horizontal" />  
 
 
</LinearLayout>  

* Activity class

File : MainActivity.java

package example.android.com.radiobutton;  
 
import android.support.v7.app.AppCompatActivity;  
import android.os.Bundle;  
import android.view.View;  
import android.widget.Button;  
import android.widget.RadioButton;  
import android.widget.RadioGroup;  
import android.widget.Toast;  
 
public class MainActivity extends AppCompatActivity {  
    Button button;  
    RadioButton genderradioButton;  
    RadioGroup radioGroup;  
    @Override  
    protected void onCreate(Bundle savedInstanceState) {  
        super.onCreate(savedInstanceState);  
        setContentView(R.layout.activity_main);  
        radioGroup=(RadioGroup)findViewById(R.id.radioGroup);  
    }  
    public void onclickbuttonMethod(View v){  
        int selectedId = radioGroup.getCheckedRadioButtonId();  
        genderradioButton = (RadioButton) findViewById(selectedId);  
        if(selectedId==-1){  
            Toast.makeText(MainActivity.this,"Nothing selected", Toast.LENGTH_SHORT).show();  
        }  
        else{  
            Toast.makeText(MainActivity.this,genderradioButton.getText(), Toast.LENGTH_SHORT).show();  
        }  
 
    }  
}  

Output :

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