Android 之RadioButton 关于 Android 中的RadioButton

    package com.example.test0508;
    
    import androidx.appcompat.app.AppCompatActivity;
    
    import android.content.Intent;
    import android.os.Bundle;
    import android.view.View;
    import android.widget.Button;
    
    public class MainActivity extends AppCompatActivity {
    
    private Button mBtnRadioButton;
    
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        mBtnRadioButton = findViewById(R