问UIPinchGestureRecognizer和UIRotationGestureRecognizer不工作

EN

-(IBAction)addUIImageView:(UITapGestureRecognizer *)sender {
        CGPoint tapLocation = [sender locationInView:_Image];
        NSLog(@"Screen tapped");
        UIImageView *ImageView = [[UIImageView alloc]initWithImage:[UIImage imageNamed:@"Image1.png"]];

        [ImageView setCenter:[sender locationInView:_Image]];
        ImageView.userInteractionEnabled = YES;
        ImageView.multipleTouchEnabled =  YES;

        UIPinchGestureRecognizer *pinchGesture = [[UIPinchGestureRecognizer alloc] initWithTarget:self action:@selector(resizeImage:)];
        [ImageView addGestureRecognizer:pinchGesture];

        UIRotationGestureRecognizer *rotateGesture = [[UIRotationGestureRecognizer alloc] initWithTarget:self action:@selector(rotateImage:)];
        [ImageView addGestureRecognizer:rotateGesture];

        [self.Image addSubview:ImageView];
}

- (void)resizeImage:(UIPinchGestureRecognizer *)recognizer {
    recognizer.view.transform = CGAffineTransformScale(recognizer.view.transform, recognizer.scale, recognizer.scale);
    recognizer.scale = 1;
}

-(void)rotateImage:(UIRotationGestureRecognizer *)recognizer {
    recognizer.view.transform = CGAffineTransformRotate(recognizer.view.transform, recognizer.rotation);
    recognizer.rotation = 0;
}