如何通过Safari Mobile中的javascript检测我的iPhone应用程序是否已安装？ [英] How do I detect, via javascript in Safari Mobile, if my iPhone application is installed?

问题描述

您可能知道，iPhone应用程序可以注册自定义URL方案处理程序，alamyapp：，这些可以用于在Safari中查看的页面中的链接。

As you probably know, iPhone applications can register a custom URL scheme handler, ala "myapp:" and these can be used for links in a page viewed in Safari.

如果访问者安装了应用程序，我想从特定页面自动启动我的应用程序。如果该应用未安装，我只会向他们展示当前针对该页面的移动设备优化视图。

I'd like to automatically launch my application from a specific page if the visitor has the app installed. If the app's not installed, I'll just show them the current mobile-optimized view of the page.

如何进行此检测？谷歌的搜索毫无结果。另外，为了变得棘手，我尝试过这样的事情无济于事：

How can I do this detection? Google searches have been fruitless. Also, to be tricky, I've tried doing something like this to no avail:

var image = new Image();
image.onerror = function(e){
  alert("bummer");
}
image.onload = function(e){
  alert('success!');
}
image.src = 'myapp://something=meaningful';

有没有人遇到过检测应用程序的方法？

Has anyone come across a way to do application detection?

推荐答案

解决方案我在另一个Stack Overflow问题上提出的问题与你将要获得的一样接近。

The solution I've presented on another Stack Overflow question is about as close as you're going to get.

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