[panGesture setEnabled:NO]被禁用时，动画结束后，未设置 [panGesture setEnabled:NO]，致使panGesture不可用

[2103677649]

-(void)setAnimatingDrawer:(BOOL)animatingDrawer{

_animatingDrawer = animatingDrawer;
[self.view setUserInteractionEnabled:!animatingDrawer];

//panGesture == self.mPanGesture
if (_animatingDrawer == NO) {
if (self.mPanGesture && self.mPanGesture.enabled == NO) self.mPanGesture.enabled = YES;
}
}

-(void)panGestureCallback:(UIPanGestureRecognizer *)panGesture{

switch (panGesture.state) {

    case UIGestureRecognizerStateBegan:{

        if(self.animatingDrawer){

            [panGesture setEnabled:NO];

            break;

        }