/** 根据屏幕的方向设置扫描的方向 * @author maguang * @param parameter * @return result */- (void)showaCapture{    CGAffineTransform transform;    if (self.interfaceOrientation == UIInterfaceOrientationLandscapeLeft)    {        self.capture.rotation = 180.0f;        transform = CGAffineTransformMakeRotation(M_PI/2);    }    else if (self.interfaceOrientation == UIInterfaceOrientationLandscapeRight)    {        self.capture.rotation = 0.0f;        transform = CGAffineTransformMakeRotation(-M_PI/2);    }    else if (self.interfaceOrientation == UIInterfaceOrientationPortrait)    {        self.capture.rotation = 90.0f;        transform = CGAffineTransformMakeRotation(0);    }    else if (self.interfaceOrientation == UIInterfaceOrientationPortraitUpsideDown)    {        self.capture.rotation = 270.0f;        transform = CGAffineTransformMakeRotation(M_PI);    }        [self.capture setTransform:transform];    CGRect f = CGRectMake(0, 0, self.view.bounds.size.width, self.view.bounds.size.height);    self.view.layer.frame=f;    self.capture.layer.frame = f;}