我如何覆盖 osmdroid 中的默认捏合缩放？
我正在使用 Osmdroid 创建离线地图
现在，我想实现自己的捏合缩放离线地图功能
当用户使用捏合功能时，我想放大/缩小到特定的缩放级别，而不是增加/减少缩放级别 1
有没有办法做到这一点？我该怎么办？
PS：是的，有缩放控件，但我想让缩放功能更直观
谢谢
I m using Osmdroid to create an offline map
Now, i want to implement my own pinch to zoom functionality for offline maps
When user uses pinch, i would like to zoom in/ zoom out to only a particular zoom level and not increment/ decrement zoom level by 1
Is there a way to do it? how can i go about this ?
P.S : yes, there are zoom controls, but i would like to make zooming feature more intuitive
Thanks
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我处理了类似的问题此处，并提供了自定义代码捏合功能。所以基本上，扩展我在答案中的内容，基本上就是这样做：
这只是将缩放级别增加 2 而不是 1 的示例。我也是凭记忆编写了上面的代码，所以我不是 100%当然，如果您调用
getController()来获取当前和最大缩放级别，但我很确定就是这样。mOsmv（以防万一您不明白）是 osmdroid 地图的一个实例。I dealt with a similar question here, and provided the code for custom functionality on pinch. So basically, expanding on what I had in the answer, just basically do:
That is just an example of increasing the zoom level by 2, instead of just 1. I also wrote the code above from memory, so I'm not 100% sure if you call
getController()to get the current and maximum zoom level, but I'm pretty sure that's it.mOsmv, just in case you don't get it, is an instance of the osmdroid map.我认为做到这一点的方法是扩展 MapView。
覆盖
setZoomLevel看起来像是一种选择，但我认为它不会起作用。我相信代码需要以 this.setZoomLevel 风格编写，但它并没有一贯地这样做。我认为您应该能够覆盖
selectObject，它看起来像是捏合触发调用的地方setZoomLevel您将需要检查 源代码 查看如何制作必要的修改
I think the way to do this will be to extend MapView.
Overriding
setZoomLevellooks like one option but I don't think it will work. As I belive the code needs to be writen in athis.setZoomLevelstyle which it is not consistantly doing.I think you should be able to override
selectObjectwhich looks like the place where a pinch trigers a callsetZoomLevelYou will need to check the source code to see how to make the nessasary modifications