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iPhone和Android：是否有可能随时都有应用程序监听？

[英]iPhone and Android: Is it possible to have an app that listens at all times?

原文 2011-04-20 04:38:43 5 2 iphone/ android/ xcode/ audio

...and when listens at an specific sound it activates an action? ......当听到特定的声音时，它会激活一个动作？ For example: An app that sends a Push Notification when an specific sound is listened in the environment. 例如：在环境中侦听特定声音时发送推送通知的应用程序。

2 个解决方案

That is not possible, and for good reasons: 这是不可能的，并且有充分的理由：

Security, one could write an app that snoops on people in the background 安全性，人们可以编写一个在后台窥探人的应用程序
Battery life 电池寿命

A friend of mine just created an iOS demo that runs in the background, listens to audio and sends messages via network to something else. 我的一个朋友刚刚创建了一个在后台运行的iOS演示，收听音频并通过网络发送消息到其他地方。

And this is indeed working very well. 这确实很有效。 As far as I know everything was built with official frameworks and without jailbreaking. 据我所知，一切都是用官方框架构建的，没有越狱。
Although I'm not sure if this app would be allowed in the app store, it uses background processing for audio apps, and I don't know if such a thing fits this category. 虽然我不确定这个应用程序是否会在应用程序商店中被允许，但它使用音频应用程序的后台处理，我不知道这样的东西是否适合这个类别。 I guess we'll try it soon. 我想我们很快就会试一试。

The snooping mentioned by Zoran can only happen if you hide the iOS device in their pocket because there will be a red status bar that tells you that something is recording in the background. Zoran提到的窥探只有在你将iOS设备隐藏在口袋中时才会发生，因为会有一个红色状态栏告诉你某些东西正在后台录制。