如何更改NavigationView菜单项的字体和大小？

<com.google.android.material.navigation.NavigationView
    android:id="@+id/navigation_view"
    ...
/>

NavigationView navigationView = findViewById(R.id.navigation_view);
Menu menu = navigationView.getMenu();

for (int i = 0; i < menu.size(); i++) {
    MenuItem menuItem = menu.getItem(i);
    SpannableString spannableString = new SpannableString(menuItem.getTitle());
    // 设置字体
    spannableString.setSpan(new TypefaceSpan("your_custom_font.ttf"), 0, spannableString.length(), Spannable.SPAN_INCLUSIVE_INCLUSIVE);
    // 设置字体大小
    spannableString.setSpan(new AbsoluteSizeSpan(16, true), 0, spannableString.length(), Spannable.SPAN_INCLUSIVE_INCLUSIVE);
    menuItem.setTitle(spannableString);
}

navigationView.setNavigationItemSelectedListener(new NavigationView.OnNavigationItemSelectedListener() {
    @Override
    public boolean onNavigationItemSelected(@NonNull MenuItem item) {
        // 处理菜单项的点击事件
        return true;
    }
});