Question

让我从提供代码开始：

func openDirections(originLat: Double, originLong: Double, destinationLat: Double, destinationLong: Double) {
    guard let testURL = URL(string:"comgooglemaps-x-callback://") else { return }
    if UIApplication.shared.canOpenURL(testURL) {
        let directionsRequest = "comgooglemaps://?saddr=\(originLat),\(originLong)&daddr=\(destinationLat),\(destinationLong)&directionsmode=walking"
        guard let directionsURL = URL(string: directionsRequest) else { return }
        UIApplication.shared.open(directionsURL, options: [:], completionHandler: nil)
    } else {
        let alert = UIAlertController(title: "Please install Google Maps in order to use this feature.", message: "", preferredStyle: .alert)
        let okAction = UIAlertAction(title: "OK", style: .default) { _ in
            self.dismiss(animated: true)
        }
        alert.addAction(okAction)
        DispatchQueue.main.async {
            self.present(alert, animated: true, completion: nil)
        }
    }
}

如果我注释掉canOpenURL函数，它将按预期方式成功打开google地图。当我执行检查时，即使它已经安装，它也会返回false并指示用户安装google地图。我尝试插入有效的DirectionsURL和相同的问题。此功能是否不应该执行该操作，还是需要尝试另一个测试URL？该文档使用了我在其示例中尝试过的测试网址。如何检查用户是否有Google Maps并可以打开DirectionsURL？

UIApplication.shared.canOpenURL函数不适用于Google Maps

0 个答案: