有关我们的iPhone本机应用程序，我们有一个网址：例如：//

For our iPhone native application we have a URL : example://

在iPhone上，如果我键入此网址（例如：//）。在Safari会自动打开了我的申请。

On the iPhone if I type this URL (example://) in safari it automatically opens up my application.

这是我的正规的网站我有当用户点击可以打开应用程序的链接。问题是，如果应用程序没有在iPhone上安装它会抛出无法打开的错误。

From my "regular" website I have a link which when the user clicks it opens the application. The problem is that if the application is not installed on the iPhone it throws "Unable to open" error.

所以呈现在我的正规的网站上的链接之前，我需要检查是否安装了应用程序，一种解决方案是使一个Ajax调用，并检查状态code：

So before rendering the link on my "regular" site I need to check if the app is installed, one solution is to make an Ajax call and check for status code:

$.ajax({
                    type: 'POST',
                    url: 'example://',                   
                    complete: function (transport) {
                        if (transport.status == 200) {
                            alert('Success');                            
                        } else {
                            alert(transport.status);
                            alert('Failed');
                        }
                    }
                });

但是，这code总是返回一个状态code0。

But this code is always returning a status code "0".

有没有办法从网上了解是否安装了原生iPhone应用程序？

Is there a way to find out from the web if the native iPhone app is installed?

推荐答案

如果妳指的是移动Safari浏览器，你的运气了。有没有记录的公共API，我知道的，可以做到这一点。移动Safari浏览器从操作系统的沙盒了。

If u are referring to Mobile Safari, you're out of luck. There's no documented public API that I know of that can do this. Mobile Safari is sandboxed away from the OS.

如果它在一个web视图中的一个应用程序，U可以请求的URL，让web视图代表谈话的本机应用程序/查询例子的处理：//。否则，没办法浏览器就可以知道存在任何已安装的应用程序。

If it's in a webview within an app, u can request the URL and let the webview delegate talk to the native app / query the handling of example://. Otherwise, no way the browser can know existence of any installed app.