Any way to automatically trigger launch of my app

Is there any way to automatically launch my app when the iPhone rec开发者_C百科eives an external phone call?

Thanks

Is there any way? Maybe if you jailbreak it and dig around in the private frameworks, which is something I don't know much about. As for an officially documented method, you're very out of luck.

In iOS, to launch an app that is not currently running or suspended, you use a custom URL scheme. The OS comes standard with built in support for a few different schemes, tel being one of them. Supporting this scheme is what makes the Phone app launch automatically with a telephone number. According to the docs:

The handlers for these schemes are fixed and cannot be changed. If your URL type includes a scheme that is identical to one defined by Apple, the Apple-provided application is launched instead of your application.

So, even if you were to explicitly support the scheme, the OS would trump your app with the phone app.