获取APP启动图片LaunchImage

- (UIImage *)getTheLaunchImage
{
    CGSize viewSize = CGSizeMake(SCREEN_WIDTH, SCREEN_HEIGHT);
    NSString *viewOrientation = @"Portrait";    //横屏请设置成 @"Landscape"
    NSString *launchImage = nil;
    NSArray* imagesDict = [[[NSBundle mainBundle] infoDictionary] valueForKey:@"UILaunchImages"];
    for (NSDictionary* dict in imagesDict)
    {
        CGSize imageSize = CGSizeFromString(dict[@"UILaunchImageSize"]);
        if (CGSizeEqualToSize(imageSize, viewSize) && [viewOrientation isEqualToString:dict[@"UILaunchImageOrientation"]])
        {
            launchImage = dict[@"UILaunchImageName"];
        }
    }
    
    return [UIImage imageNamed:launchImage];
}