iOS获取LaunchImage图片

今天在项目中，需要将一个弹窗加载到启动图界面，由于我们本身无法控制启动图随时结束，所以我在launch方法中，给window的rootviewcontroller添加了一个图片，这个图片就是取自我们的启动图，这样就会有一种启动图一直未消失的假象。获取图片的方法如下：

• (UIImage *)getLaunchImage {
  UIImage *launchImg = [[UIImage alloc] init];
  NSString *orientation = @"";
  CGSize screenSize = [UIScreen mainScreen].bounds.size;
  UIInterfaceOrientation statusBarOrientation = [[UIApplication sharedApplication] statusBarOrientation];
  if (statusBarOrientation == UIInterfaceOrientationLandscapeLeft || statusBarOrientation == UIInterfaceOrientationLandscapeRight) {
  orientation = @"Landscape";
  } else {
  orientation = @"Portrait";
  }
  NSArray *imgsInfoArr = [[[NSBundle mainBundle] infoDictionary] objectForKey:@"UILaunchImages"];
  for (NSDictionary *info in imgsInfoArr) {
  CGSize imgSize = CGSizeFromString(info[@"UILaunchImageSize"]);
  if (CGSizeEqualToSize(imgSize, screenSize) && [orientation isEqualToString:info[@"UILaunchImageOrientation"]] ) {
  launchImg = [UIImage imageNamed:info[@"UILaunchImageName"]];
  }
  }
  return launchImg;
  }