相关疑难解决方法(0)

我编写了简单的代码来测试UIImagePickerController:

@implementation ProfileEditViewController

- (void)viewDidLoad {
  [super viewDidLoad];

  photoTaker_ = [[UIImagePickerController alloc] init];
  photoTaker_.delegate = self;
  photoTaker_.sourceType = UIImagePickerControllerSourceTypeCamera;
  photoTaker_.showsCameraControls = NO;
}

- (void)viewDidAppear: (BOOL)animated {
  [self presentModalViewController: photoTaker_ animated: NO];
}

@end

我收到如下奇怪的警告:

2010-05-20 17:53:13.838 TestProj [2814:307]使用两阶段旋转动画.要使用更平滑的单阶段动画,此应用程序必须删除两阶段方法实现.2010-05-20 17:53:13.849 TestProj [2814:307]旋转多个视图控制器或视图控制器而不是窗口委托时,不支持使用两阶段旋转动画

知道这是关于什么的吗？非常感谢提前!