使用MapboxNavigation 2.5.0,如何调整iOS SDK中MapView的指南针大小?
修改内置指南针视图的缩放比例
MapboxMapView自带的指南针可以通过调整视图的缩放变换来改变大小,代码示例如下:guard let compassView = mapView.compassView else { return } // 这里的scale值可自行调整,0.7对应原大小的70%,1.3对应130% compassView.transform = CGAffineTransform(scaleX: 0.7, y: 0.7)替换为自定义尺寸的指南针视图
如果需要用自定义样式或更精准的尺寸控制,可以创建自定义视图替换默认指南针:- 先创建自定义视图并设置尺寸:
let customCompass = UIImageView(image: UIImage(named: "your_custom_compass_image")) // 直接设置想要的宽高 customCompass.frame = CGRect(x: 0, y: 0, width: 35, height: 35)- 让自定义视图实现
CompassViewProtocol以响应方向变化:
extension UIImageView: CompassViewProtocol { public func updateDirection(_ direction: CLLocationDirection, animated: Bool) { let rotationAngle = CGFloat(direction * .pi / 180) UIView.animate(withDuration: animated ? 0.2 : 0) { self.transform = CGAffineTransform(rotationAngle: -rotationAngle) } } }- 替换默认指南针:
mapView.compassView = customCompass
内容的提问来源于stack exchange,提问作者Bland
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