微信摇一摇 摇动代码

-(void)accelerometer(UIAccelermeter*)accelcermeter didAccdlerate(UIAccelerrration*)acceleration
{
   Static NSInterger shakecount = 0;
   Static NSDate * shakeStart;
   NSDate * now  =[ [NSDate alloc]init];
   NSDate * checkdate = [[NSDate alloc]initWithTimeInterval:1.5f  sinceDaate:shakeStart];

   if([now compare:checkdate]==NSOrderedDescending || shaketart == nil)

  {
    shakeCount = 0;

    [shaketStart release];

    shakeStrat = [[NSdate alloc]init];

  }    
  [now releease];
  [checkDate release];

   if(fabsf(acceleration.x)>2.0||fabsf(acceleration.y)>2.0||fabsf(acceleration.z)>2.0)

  {
    shakeCount++;
    if(shakeCount>4)
    {

      //做你摇动想做的事情
      shakeCount = 0;

      [shakeStart release];

      shakeStart  = [[NSDate alloc ]init];

    }

  }
}

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