iOS获取开屏LaunchScreen对象
//拿到LaunchScreen.StoryBoard并生成一个控制器
UIViewController *stvc = [[UIStoryboard storyboardWithName:@"LaunchScreen" bundle:[NSBundle mainBundle]] instantiateInitialViewController];
//通过控制器的.view生成imgae截图
CGRect rect = view.bounds;
UIGraphicsBeginImageContextWithOptions(rect.size, YES, 0.0f);
CGContextRef context = UIGraphicsGetCurrentContext();
[view.layer renderInContext:context];
UIImage *image = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
//之后拿到了image就可以用作开屏广告前的截图了
比如腾讯广告中就会用到
[TXAD configOpenScreenAD:image fullImg:image placementId:TAD_OpenScreenPlaceId];