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我正在寻求您的帮助，因为我认为这是一个简单的问题，但我无法理解我的观点发生了什么。我正在显示由我的 UIViewController 启动的 OpenGL 视图，如下所示：

  //OpenGL view init
CGRect mainframe=CGRectMake(0,0,768,708);
GLView= [[OpenGLView alloc] initWithFrame:mainframe];

所以它显示得很好，但我试图添加一个滑动手势识别器来调用这个视图上的一个函数：

- (id)initWithFrame:(CGRect)frame
{
    self = [super initWithFrame:frame];
    if (self) {

        ...  

        oneFingerSwipeRight =[[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(transitionCubeRight:)];
        oneFingerSwipeRight.direction=UISwipeGestureRecognizerDirectionRight;

        oneFingerSwipeLeft =[[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(transitionCubeLeft:)];
        oneFingerSwipeLeft.direction=UISwipeGestureRecognizerDirectionLeft;

        [self addGestureRecognizer:oneFingerSwipeRight];
        [self addGestureRecognizer:oneFingerSwipeLeft];

        ...
    }
    return self;
}

然后当视图出现时，我正在做向右或向左滑动的动作，这会出现在终端中：

2012-04-17 12:00:15.735 MultipleViewsApp[4372:f803]-[OpenGLView transitionCubeLeft:]：无法识别的选择器发送到实例 0xcd38bd0 2012-04-17 12:00:15.736 MultipleViewsApp[4372:f803]由于未捕获的异常“NSInvalidArgumentException”而终止应用程序，原因：“-[OpenGLView transitionCubeLeft:]: unrecognized selector sent to instance 0xcd38bd0” 第一掷调用堆栈：（0x1764052 0x18f5d0a 0x1765ced 0x16caf00 0x16cace2 0x622e39 0x622143 0x6233cf 0x625a31 0x62598c 0x61e3e7 0x386812 0x386ba2 0x36d384 0x360aa9 0x293dfa9 0x17381c5 0x169d022 0x169b90a 0x169adb4 0x169accb 0x293c879 0x293c93e 0x35ea9b 0x2518 0x2475）

我的函数“transitionCubeLeft”/“transitionCubeLeft”只包含一个 NSLOG，但与此无关。如果有人能帮助我理解这个问题，我将不胜感激。谢谢

4

2 回答 2

2

我猜你还没有定义transitionCubeLeft方法。根据您使用的选择器，尝试找出它是否已定义并且方法的参数计数为 1。

于 2012-04-17T11:41:17.170 回答
1

看起来您已经transitionCubeLeft/transitionCubeRight定义了没有参数。

改变

 oneFingerSwipeRight =[[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(transitionCubeRight:)];
 oneFingerSwipeRight.direction=UISwipeGestureRecognizerDirectionRight;

 oneFingerSwipeLeft =[[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(transitionCubeLeft:)];
 oneFingerSwipeLeft.direction=UISwipeGestureRecognizerDirectionLeft;

 [self addGestureRecognizer:oneFingerSwipeRight];
 [self addGestureRecognizer:oneFingerSwipeLeft];

到

 oneFingerSwipeRight =[[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(transitionCubeRight)];
 oneFingerSwipeRight.direction=UISwipeGestureRecognizerDirectionRight;

 oneFingerSwipeLeft =[[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(transitionCubeLeft)];
 oneFingerSwipeLeft.direction=UISwipeGestureRecognizerDirectionLeft;

 [self addGestureRecognizer:oneFingerSwipeRight];
 [self addGestureRecognizer:oneFingerSwipeLeft];
于 2012-04-17T11:54:50.930 回答