Xml version= 0" encoding="utf-8"

package com.example.radiobutton;

import android.graphics.Color;
import android.os.Bundle;
import android.widget.RadioButton;
import android.widget.TextView;

import androidx.appcompat.app.AppCompatActivity;
import android.view.View;
public class MainActivity extends AppCompatActivity {
private TextView mInfoTextView;

@Override

protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mInfoTextView = (TextView)findViewById(R.id.current_pick);
RadioButton redRadioButton = findViewById(R.id.radio_red);
redRadioButton.setOnClickListener(radioButtonClickListener);

RadioButton greenRadioButton = (RadioButton)findViewById(R.id.radio_green);

greenRadioButton.setOnClickListener(radioButtonClickListener);

RadioButton blueRadioButton = findViewById(R.id.radio_blue);

blueRadioButton.setOnClickListener(radioButtonClickListener);

RadioButton grayRadioButton = findViewById(R.id.radio_gray);

grayRadioButton.setOnClickListener(radioButtonClickListener);
}
View.OnClickListener radioButtonClickListener = new View.OnClickListener() {
@Override
public void onClick(View v) {
RadioButton rb = (RadioButton)v;
switch (rb.getId()) {
case R.id.radio_red: mInfoTextView.setBackgroundColor(Color.parseColor("#ff0000"));
break;
case R.id.radio_green: mInfoTextView.setBackgroundColor(Color.parseColor("#0000ff"));
break;
case R.id.radio_blue: mInfoTextView.setBackgroundColor(Color.parseColor("#00ff00"));
break;
case R.id.radio_gray: mInfoTextView.setBackgroundColor(Color.parseColor("#666666"));
break;

default:
break;
}
}
};
}

Dasturimiz mana tayyor bo’ldi