ios - 拖动时旋转 View

Question

我想在拖动 UIView 时稍微旋转它。我设法使用 UIPanGestureRecognizer 进行了拖动。我还尝试使用 CGAffineTransformRotate 进行旋转，它成功了。但是，当我同时应用拖动和旋转时，UIView 仅旋转并且不会在 super View 周围拖动。这是我在手势处理程序中所做的:

CGPoint translation = [gesture translationInView:self.view];
    // to drag
    gesture.view.center = CGPointMake(gesture.view.center.x + translation.x, gesture.view.center.y + translation.y);
    // to rotate
    gesture.view.transform = CGAffineTransformRotate(gesture.view.transform, degreesToRadians(translation.x)/4);
    // return to default so that it doesn't accumulate
    [gesture setTranslation:CGPointMake(0, 0) inView:self.view];

我该如何解决这个问题？

编辑:这是完整的代码:

- (void)handlePan:(UIPanGestureRecognizer*)gesture{
if (gesture.state == UIGestureRecognizerStateBegan) {
    // Save initial post center for snapping
    point = CGPointMake(gesture.view.center.x, gesture.view.center.y);
} else if (gesture.state == UIGestureRecognizerStateChanged){
    // Translate user movement across the screen to dragging coordinates
    CGPoint translation = [gesture translationInView:self.view];

    gesture.view.center = CGPointMake(gesture.view.center.x + translation.x, gesture.view.center.y + translation.y);

    CGAffineTransform rotate = CGAffineTransformRotate(gesture.view.transform, degreesToRadians(translation.x)/4);

    gesture.view.transform = rotate;//CGAffineTransformConcat(translate, rotate);

    [gesture setTranslation:CGPointMake(0, 0) inView:self.view];


} else if (gesture.state == UIGestureRecognizerStateEnded){
    // Animate snap back to place
    [UIView animateWithDuration:0.2 animations:^{
        gesture.view.transform = CGAffineTransformIdentity;
       // [self.imagePost setCenter:point];
    }];
}

Answer 1

尝试添加这个方法:

- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer
{
if (![gestureRecognizer isKindOfClass:[UITapGestureRecognizer class]] && ![otherGestureRecognizer isKindOfClass:[UITapGestureRecognizer class]]) {
    return YES;
}

return NO;