IOS检测晃动的两种方式

第一种：

第一步：在AppDelegate中设置如下：

- (BOOL)application:(UIApplication *)applicationdidFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
   application.applicationSupportsShakeToEdit = YES;
}

第二步：在相应的viewController中添加相应的代码如下：

-(BOOL)canBecomeFirstResponder {
    returnYES;
}

-(void)viewDidAppear:(BOOL)animated {
    [superviewDidAppear:animated];
    [selfbecomeFirstResponder];
}

- (void)viewWillDisappear:(BOOL)animated {
    [selfresignFirstResponder];
    [superviewWillDisappear:animated];
}

- (void)motionEnded:(UIEventSubtype)motion withEvent:(UIEvent*)event
{
    if (motion== UIEventSubtypeMotionShake) {
       NSLog(@"检测到晃动");
    }
}

在模拟器中测试晃动，按组合键：Ctrl + Win + Z

第二种：

利用UIAccelerometer加速器来检测，代码如下：

- (void)viewDidLoad
{

   UIAccelerometer *accelerometer = [UIAccelerometersharedAccelerometer];
   accelerometer.delegate = self;
   accelerometer.undateInterval = 1.0f / 60.0f;

}
- (void)accelerometer:(UIAccelerometer *)accelerometerdidAccelerate:(UIAcceletration *)acceleration
{
if(fabsf(acceleration.x)>2.0||fabsf(acceleration.y>2.0)||fabsf(acceleration.z)>2.0)
    {
       //NSLog(@"检测到晃动");
    }
}