ios - iOS编程中的手势识别

Question

如何在iOS编程中使用cocos2d做简单的手势识别？手势只是指滑动屏幕时手指的路径。

当用户触摸屏幕时，我想在我的游戏中使用一些简单的手势，例如线条（八个方向）、圆形、正方形以及其他手势，如“V”、“^”、“<”、“>”。有没有什么简单的方法可以快速识别用户输入？

Answer 1

iOS SDK 3.2 引入了UIGestureRecognizer简单手势的简单识别类。

的具体子类UIGestureRecognizer如下：

UITapGestureRecognizer
UIPinchGestureRecognizer
UIRotationGestureRecognizer
UISwipeGestureRecognizer
UIPanGestureRecognizer
UILongPressGestureRecognizer

如果您需要识别其他手势，您可以尝试子类化 UIGestureRecognizer，例如“复选标记”手势。请参阅 Apple 参考文档中的子类化注释。

Answer 2

尝试以下链接http://www.techotopia.com/index.php/An_iPhone_iOS_4_Gesture_Recognition_Tutorial_(Xcode_4 )，它描述了手势识别。

并尝试一下：

UISwipeGestureRecognizer *recognizer;

recognizer = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(handleSwipeFrom:)];
[recognizer setDirection:(UISwipeGestureRecognizerDirectionRight)];
[[self view] addGestureRecognizer:recognizer];
[recognizer release];

recognizer = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(handleSwipeFrom:)];
[recognizer setDirection:(UISwipeGestureRecognizerDirectionUp)];
[[self view] addGestureRecognizer:recognizer];
[recognizer release];

recognizer = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(handleSwipeFrom:)];
[recognizer setDirection:(UISwipeGestureRecognizerDirectionDown)];
[[self view] addGestureRecognizer:recognizer];
[recognizer release];

recognizer = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(handleSwipeFrom:)];
[recognizer setDirection:(UISwipeGestureRecognizerDirectionLeft)];
[[self view] addGestureRecognizer:recognizer];
[recognizer release];