IOS 检测摇动

有两种方式检测摇动：

1. 继承UIWindow

- (void)motionBegan:(UIEventSubtype)motion withEvent:(UIEvent *)event
{
}

- (void)motionEnded:(UIEventSubtype)motion withEvent:(UIEvent *)event
{
    if (motion == UIEventSubtypeMotionShake )
    {
        // User was shaking the device. Post a notification named "shake".
        [[NSNotificationCenter defaultCenter] postNotificationName:@"shake" object:self];//消息注册
    }
}

- (void)motionCancelled:(UIEventSubtype)motion withEvent:(UIEvent *)event
{    
}

2. 在AppDelegate.m中

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    ...
    application.applicationSupportsShakeToEdit = YES;//添加此处
    ...
    return YES;
}

然后在viewcontroller中

-(BOOL)canBecomeFirstResponder {
    return YES;
}

-(void)viewDidAppear:(BOOL)animated
{
    [super viewDidAppear:animated];
    [self becomeFirstResponder];
}

- (void)viewWillDisappear:(BOOL)animated {
    [self resignFirstResponder];
    [super viewWillDisappear:animated];
}

- (void)motionEnded:(UIEventSubtype)motion withEvent:(UIEvent *)event
{
    if (motion == UIEventSubtypeMotionShake)
    {
        NSLog(@"摇啊摇");
    }
}

原文：
http://ilewen.com/questions/778/%E7%A8%8B%E5%BA%8F%E6%80%8E%E4%B9%88%E6%A3%80%E6%B5%8B%E7%94%A8%E6%88%B7%E5%9C%A8%E6%91%87%E5%8A%A8iphone%EF%BC%9F