如何创建自定义单选按钮Android

<!-- custom_radio_button.xml -->
<RadioButton xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:background="@drawable/custom_radio_button_background"
    android:textColor="@color/custom_radio_button_text_color"
    android:textSize="16sp"
    android:padding="8dp" />

// CustomRadioButton.java
public class CustomRadioButton extends RadioButton {

    public CustomRadioButton(Context context) {
        super(context);
        init();
    }

    public CustomRadioButton(Context context, AttributeSet attrs) {
        super(context, attrs);
        init();
    }

    public CustomRadioButton(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
        init();
    }

    private void init() {
        // 设置自定义的样式和属性
        setBackgroundResource(R.drawable.custom_radio_button_background);
        setTextColor(getResources().getColor(R.color.custom_radio_button_text_color));
        setTextSize(16);
        setPadding(8, 8, 8, 8);
    }
}

<!-- activity_main.xml -->
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">

    <com.example.CustomRadioButton
        android:id="@+id/customRadioButton"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Custom Radio Button" />

</LinearLayout>

// MainActivity.java
public class MainActivity extends AppCompatActivity {

    private CustomRadioButton customRadioButton;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        customRadioButton = findViewById(R.id.customRadioButton);
        customRadioButton.setChecked(true);

        customRadioButton.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
                // 处理单选按钮的选中状态变化事件
            }
        });
    }
}