有没有办法限制MKMapView的最大缩放级别？ [英] Is there way to limit MKMapView maximum zoom level?

问题描述

问题是 - 有没有办法限制MKMapView的最大缩放级别？或者有没有办法跟踪用户何时缩放到没有地图图像的水平？

the question is - is there a way to limit maximum zoom level for MKMapView? Or is there a way to track when user zooms to the level where there's no map image available?

推荐答案

你可以使用 mapView：regionWillChangeAnimated：委托侦听区域变更事件的方法，如果区域比最大区域宽，请使用将其设置回最大区域setRegion：animated：向您的用户表明他们无法缩小那么远。以下是方法：

You could use the mapView:regionWillChangeAnimated: delegate method to listen for region change events, and if the region is wider than your maximum region, set it back to the max region with setRegion:animated: to indicate to your user that they can't zoom out that far. Here's the methods:

- (void)mapView:(MKMapView *)mapView regionWillChangeAnimated:(BOOL)animated
- (void)setRegion:(MKCoordinateRegion)region animated:(BOOL)animated

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