在 UIResponder中存在这么一套方法    - (void)motionBegan:(UIEventSubtype)motion withEvent:(UIEvent *)event __OSX_AVAILABLE_STARTING(__MAC_NA,__IPHONE_3_0);    - (void)motionEnded:(UIEventSubtype)motion withEvent:(UIEvent *)event __OSX_AVAILABLE_STARTING(__MAC_NA,__IPHONE_3_0);    - (void)motionCancelled:(UIEventSubtype)motion withEvent:(UIEvent *)event __OSX_AVAILABLE_STARTING(__MAC_NA,__IPHONE_3_0);    这就是执行摇一摇的方法。那么怎么用这些方法呢？    很简单，你只需要让这个Controller本身支持摇动    同时让他成为第一相应者：    - (void)viewDidLoad    {        [superviewDidLoad];    // Do any additional setup after loading the view, typically from a nib.        [[UIApplicationsharedApplication] setApplicationSupportsShakeToEdit:YES];        [selfbecomeFirstResponder];    }         然后去实现那几个方法就可以了    - (void) motionBegan:(UIEventSubtype)motion withEvent:(UIEvent *)event    {        //检测到摇动    }         - (void) motionCancelled:(UIEventSubtype)motion withEvent:(UIEvent *)event    {        //摇动取消    }         - (void) motionEnded:(UIEventSubtype)motion withEvent:(UIEvent *)event    {        //摇动结束        if (event.subtype == UIEventSubtypeMotionShake) {            //something happens        }    }