获取TouchDragInside方法内的触摸位置

Question

如果没有传递给方法的事件参数，我如何在TouchDragInside方法中获取触摸位置？

显然这不起作用：

- (IBAction)touchDragInsideDblTapSignBut:(id)sender {
   UITouch *touch = [[event allTouches] anyObject];
   CGPoint location = [touch locationInView:touch.view];
}

谢谢，

Answer 1

所以在我的viewDidLoad中我不得不添加：

[_dblTapSignAddBut addTarget:self action:@selector(touchDragInsideDblTapSignButE:event:) forControlEvents:UIControlEventTouchDragInside];

然后创建一个void方法：

- (void) touchDragInsideDblTapSignButE:(id)sender event:(UIEvent *)event {
   UITouch *touch = [[event allTouches] anyObject];
   CGPoint location = [touch locationInView:touch.view];
   NSLog(@"Location x%f y%f",location.x,location.y);
}