以下代码可以正确地缩放容器视图,但只有在它跳到1.0的比例之后才能缩放。我该如何修改它,以便容器视图从其当前比例缩放?
UIPinchGestureRecognizer *twoFingerPinch = [[UIPinchGestureRecognizer alloc] initWithTarget:self action:@selector(twoFingerPinch:)];
[self.container addGestureRecognizer:twoFingerPinch];
- (void)twoFingerPinch:(UIPinchGestureRecognizer *)recognizer
{
_scale = recognizer.scale;
CGAffineTransform tr = CGAffineTransformScale(self.view.transform, _scale, _scale);
self.container.transform = tr;
}