识别圆形手势以删除注释，如何检测圆？ [英] Recognising a circle gesture to drop an annotation, how to detect circle?

问题描述

我发现了一些代码可以在视图中的任何位置检测到圆形手势：
http://iphonedevelopment.blogspot.com/2009/04/detecting-circle-gesture.html

I've found some code which detects a circle gesture anywhere in a view: http://iphonedevelopment.blogspot.com/2009/04/detecting-circle-gesture.html

一切正常。

现在我想将它合并到地图视图中，以便用户可以绘制一个圆圈，并且地图图钉会在绘制的圆圈中间掉落。如果我使用上面的代码将UIView子类化，并在其上粘贴地图，则上述代码不起作用。 （除非我隐藏地图）。如果我将代码放在子类化的MKMapView中，它也不会起作用。

Now I want to incorporate it into a map view, so that the user can draw a circle, and a map pin gets dropped in the the middle of the drawn circle. The above code doesn't work if I subclass a UIView, with the code above, and stick a map on it. (unless I hide the map). Neither does it work if I put the code in a subclassed MKMapView.

有没有办法将圆形识别器与地图合并？

Is there a way to incorporate the circle recogniser with a map?

推荐答案

回答我自己的问题：

此页面很有用： http://justinimhoff.com/swipe-gesture-with-uiwebview/

对于上面的圆圈示例，我将CircleView设置为UIGestureRecognizer而不是视图..在该文件中使用'self.view'更改了'self'的实例。然后我将它与滑动手势示例结合起来，确保将我的圆圈手势识别器的代表设置为自己。
如果有人需要了解更多详情，请与我们联系。

For the circle example above, I made CircleView a UIGestureRecognizer instead of a view.. changed instances of 'self' with 'self.view' within that file. Then I combined it with the swipe gesture example, making sure to set the delegate of my circle gesture recognizer to self. If anyone needs to know more details, let me know.

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