获取LaunchImage图片名字

CGSize windowSize = [UIScreenmainScreen].bounds.size;

    NSArray *launchImagesDict = [[[NSBundlemainBundle] infoDictionary]valueForKey:@"UILaunchImages"];

    NSString *imgName =@"";

    for (NSDictionary *imgDicin launchImagesDict) {

        CGSize imgSize =CGSizeFromString([NSStringstringWithFormat:@"%@",[imgDicobjectForKey:@"UILaunchImageSize"]]);

        if (CGSizeEqualToSize(windowSize, imgSize)) {

            imgName = [imgDic objectForKey:@"UILaunchImageName"];

            break;

        }

    }