Ios UISweepGestureRecognitor不'；t似乎不尊重iPhone 3G上当前的设备定位

我已经注册了四个UIgestureSwipereConceptors（每个方向一个），它们可以在iPhone4/4S（iOS 4.3和5）和iPad1/2（iOS 4.NotSure和5）上正常工作。这是一个游戏，所以唯一允许的设备方向是LandscapeRight和LandscapeLeft。然而，在配备iOS 4.1的iPhone3G上，滑动识别器的响应就像是将设备放在肖像中一样。换句话说，在iPhone3G上，在LandscapeLeft中应该向上滑动的内容将注册为右滑动。事实上，所有四个刷卡识别器的行为就像设备是纵向的；但是，我已经检查了

[[UIDevice currentDevice]orientation]

，它总是返回

uideviceorientation和scapeleft

case CCDeviceOrientationPortraitUpsideDown:

此外，该应用程序是基于CoCoS2D1.0.1模板构建的游戏

case CCDeviceOrientationPortraitUpsideDown:

我可能做错了什么

case CCDeviceOrientationPortraitUpsideDown:

这是我注册四个刷卡识别器的代码：

_swipeRecognizer_right = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(swipeRightDetected)];
_swipeRecognizer_right.direction = UISwipeGestureRecognizerDirectionRight;
[self.view addGestureRecognizer:_swipeRecognizer_right];
_swipeRecognizer_right.delegate = self;

_swipeRecognizer_left = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(swipeLeftDetected)];
_swipeRecognizer_left.direction = UISwipeGestureRecognizerDirectionLeft;
[self.view addGestureRecognizer:_swipeRecognizer_left];
_swipeRecognizer_left.delegate = self;

_swipeRecognizer_up = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(swipeUpDetected)];
_swipeRecognizer_up.direction = UISwipeGestureRecognizerDirectionUp;
[self.view addGestureRecognizer:_swipeRecognizer_up];
_swipeRecognizer_up.delegate = self;

_swipeRecognizer_down = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(swipeDownDetected)];
_swipeRecognizer_down.direction = UISwipeGestureRecognizerDirectionDown;
[self.view addGestureRecognizer:_swipeRecognizer_down];
_swipeRecognizer_down.delegate = self;

case CCDeviceOrientationPortraitUpsideDown:

---

除了转换方向之外，没有别的办法了。我在的“滑动手势识别器”中使用了这种内部方法，它应该很容易适应：

-(KKSwipeGestureDirection) convertSwipeDirection:(UISwipeGestureRecognizerDirection)uiDirection
{
    // portrait mode direction remains unchanged
    KKSwipeGestureDirection direction = (KKSwipeGestureDirection)uiDirection;

    switch (uiDirection)
    {
        case UISwipeGestureRecognizerDirectionRight:
        {
            switch (director.deviceOrientation)
            {
                case CCDeviceOrientationPortraitUpsideDown:
                    direction = KKSwipeGestureDirectionLeft;
                    break;
                case CCDeviceOrientationLandscapeLeft:
                    direction = KKSwipeGestureDirectionUp;
                    break;
                case CCDeviceOrientationLandscapeRight:
                    direction = KKSwipeGestureDirectionDown;
                    break;
                default:
                    break;
            }
            break;
        }

        case UISwipeGestureRecognizerDirectionLeft:
        {
            switch (director.deviceOrientation)
            {
                case CCDeviceOrientationPortraitUpsideDown:
                    direction = KKSwipeGestureDirectionRight;
                    break;
                case CCDeviceOrientationLandscapeLeft:
                    direction = KKSwipeGestureDirectionDown;
                    break;
                case CCDeviceOrientationLandscapeRight:
                    direction = KKSwipeGestureDirectionUp;
                    break;
                default:
                    break;
            }
            break;
        }

        case UISwipeGestureRecognizerDirectionUp:
        {
            switch (director.deviceOrientation)
            {
                case CCDeviceOrientationPortraitUpsideDown:
                    direction = KKSwipeGestureDirectionDown;
                    break;
                case CCDeviceOrientationLandscapeLeft:
                    direction = KKSwipeGestureDirectionLeft;
                    break;
                case CCDeviceOrientationLandscapeRight:
                    direction = KKSwipeGestureDirectionRight;
                    break;
                default:
                    break;
            }
            break;
        }

        case UISwipeGestureRecognizerDirectionDown:
        {
            switch (director.deviceOrientation)
            {
                case CCDeviceOrientationPortraitUpsideDown:
                    direction = KKSwipeGestureDirectionUp;
                    break;
                case CCDeviceOrientationLandscapeLeft:
                    direction = KKSwipeGestureDirectionRight;
                    break;
                case CCDeviceOrientationLandscapeRight:
                    direction = KKSwipeGestureDirectionLeft;
                    break;
                default:
                    break;
            }
            break;
        }
    }

    return direction;
}

case CCDeviceOrientationPortraitUpsideDown:

对于那些使用Cocos2D 2.x的用户，您应该知道CCDirector不再具有deviceOrientation属性。相反，您只需从UIDevice获取方向：

UIDeviceOrientation orientation = [[UIDevice currentDevice] orientation];

case CCDeviceOrientationPortraitUpsideDown:

然后只需更改所有大小写标签，例如，用UI前缀替换CC

case CCDeviceOrientationPortraitUpsideDown:

应改为：

case CCDeviceOrientationPortraitUpsideDown:

case UIDeviceOrientationPortraitUpsideDown:

---

我已将@LearnCos2D提供的函数转换为仅适用于Cocos2d iphone的代码（即独立于Kobold2D）：

case CCDeviceOrientationPortraitUpsideDown:

---

谢谢你的代码@learncos2d。您知道这是否是设备特定的问题吗？我想知道我需要在哪一套设备上转换滑动方向？事实上，我真正想知道的是，iPhone 3GS和4之间发生了什么变化，导致滑动尊重设备方向？这和陀螺仪有关吗？不，陀螺仪不在其中。我只能假设它一定与GameConfig.h有关。默认情况下，RootViewController用于自动旋转，但不用于第一代和第二代设备。也许这也会使iPhone3GS无法使用它？无论如何，这应该独立于设备或应用程序的自动旋转方式。对不起，我在之前的评论中说了“iPhone3GS”，但我的意思是“iPhone3G”。此外，我可以验证此解决方案是否独立于设备（在iPhone 4、3G和iPod touch 1G上进行了测试）。谢谢！我还将cocos2d2.x的补丁添加到我的帖子中。