Question 7
Download Q7_Radio_Buttons.apk to Run and Test Locally
Last updated
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
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"
tools:context=".MainActivity"
>
<TextView
android:id="@+id/t1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:text="@string/radio_button_demo" />
<RadioGroup
android:id="@+id/rg1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:paddingTop="150dp"
android:paddingLeft="50dp"
>
<RadioButton
android:id="@+id/rb1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Python Programming" />
<RadioButton
android:id="@+id/rb2"
android:layout_width="229dp"
android:layout_height="wrap_content"
android:text="Internet Technologies" />
<RadioButton
android:id="@+id/rb3"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="DBMS" />
<RadioButton
android:id="@+id/rb4"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Operating Systems" />
<RadioButton
android:id="@+id/rb5"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Java Programming" />
</RadioGroup>
</RelativeLayout>package com.example.q7_radio_buttons;
import androidx.appcompat.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import android.widget.TextView;
import android.widget.Toast;
public class MainActivity extends AppCompatActivity {
private RadioGroup rgrp;
private RadioButton r1,r2,r3,r4,r5;
private TextView t1;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
rgrp = (RadioGroup)findViewById(R.id.rg1);
r1=(RadioButton)findViewById(R.id.rb1);
r2=(RadioButton)findViewById(R.id.rb2);
r3=(RadioButton)findViewById(R.id.rb3);
r4=(RadioButton)findViewById(R.id.rb4);
r5=(RadioButton)findViewById(R.id.rb5);
t1= (TextView)findViewById(R.id.t1);
rgrp.setOnCheckedChangeListener(
(RadioGroup.OnCheckedChangeListener)
(group, checkedId) -> {
RadioButton nameRadio = (RadioButton)
findViewById(checkedId);
String s1=nameRadio.getText().toString();
Toast.makeText(MainActivity.this,s1,
Toast.LENGTH_SHORT).show();
if(checkedId==r1.getId())
{
String s2="Teacher - Dr.Suruchi";
t1.setText(s2);
}
else if(checkedId==r2.getId()) {
String s3="Teacher - Dr. Surbhi";
t1.setText(s3);
}
else{
String s4="Teacher - Dr. Meenakshi";
t1.setText(s4);
}
});
}
}