//绘制 这里是ArcGis的代理方法
- (BOOL) callout:(AGSCallout *)callout willShowForFeature:(id<AGSFeature>)feature layer:(AGSLayer<AGSHitTestable> *)layer mapPoint:(AGSPoint *)mapPoint { - (BOOL) call
- (BOOL) callout:(AGSCallout *)callout willShowForFeature:(id<AGSFeature>)feature layer:(AGSLayer<AGSHitTestable> *)layer mapPoint:(AGSPoint *)mapPoint { - (BOOL) call