1.appdelegate里面 设置window.rootVC为需要显示的海报/广告vc
LaunchADVC * vc = [[LaunchADVC alloc] init];
BaseNavigationController *vcNav = [[BaseNavigationController alloc] initWithRootViewController:vc];
self.window.rootViewController = vcNav;
2.launchADVC里画一个imageview
_adIV = [UIImageView new];
_adIV.contentMode = UIViewContentModeScaleAspectFill;
_adIV.clipsToBounds = YES;
2.1可以海报未加载出来时,先显示LaunchScreen里的图片,这样就可以使启动图与海报无缝衔接.
_placeholderIV = [UIImageView new];
_placeholderIV.contentMode = UIViewContentModeScaleAspectFill;
_placeholderIV.image = [self getLaunchScreenImg];
[self.containerView addSubview:self.placeholderIV];
[self.placeholderIV mas_makeConstraints:^(MASConstraintMaker *make) {
make.top.left.right.bottom.mas_equalTo(self.containerView).offset(0);
}];
-(UIImage *)getLaunchScreenImg
{
UIViewController * vc = [[UIStoryboard storyboardWithName:@"LaunchScreen" bundle:[NSBundle mainBundle]] instantiateInitialViewController];
CGRect rect = [UIScreen mainScreen].bounds;
UIGraphicsBeginImageContextWithOptions(rect.size, YES, 0.0f);
CGContextRef context = UIGraphicsGetCurrentContext();
vc.view.frame= rect;
[vc.view.layer renderInContext:context];
UIImage *image = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
return image;
}
[self.adIVsd_setImageWithURL:[NSURLURLWithString:resultDict[@"image_url"]]completed:^(UIImage*_Nullableimage,NSError*_Nullableerror,SDImageCacheTypecacheType,NSURL*_NullableimageURL)
{
self.placeholderIV.hidden=YES;
[self->_timerBtnstartTimer:5countDownBlock:^(boolisEnd) {
if(isEnd)
{
[selftimerBtnClick];
}
}];
}];
3.后端设置上传的图片尺寸为1240*2208 ,要求设计图片的时候安全区域居中且尺寸为1100*2000(改尺寸并固定,可增宽增高) ,图片上需要显示的内容不要超出安全区域,不然有被裁剪掉的风险.
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