showSplashAd method
展示开屏广告
posId
广告位 id
logo
如果传值则展示底部logo,不传不展示,则全屏展示
timeout
加载超时时间
Implementation
Future<bool> showSplashAd(String posId,
{String? logo, double timeout = 3.5}) {
throw UnimplementedError('showSplashAd() has not been implemented.');
}