如何在Android / iOS上使用相机的遥控快门？ [英] How does a remote shutter for camera work on Android/iOS?

问题描述

我最近在Android / iOS上使用蓝牙为内置相机应用程序跑了一个遥控快门。

I've recently ran across a remote shutter for in-built camera app using bluetooth on Android/iOS.

以下是我找到的产品的示例链接：
链接（不是在这里做广告，而是为了简单了解其背后的技术/机制）

Here's an example link of the product that I found: Link (Not here to advertise, but to simply understand technology/mechanism behind it)

据我所知，它无法向内置相机应用程序发送远程命令，因为应用内相机应用程序根本无法处理远程命令。

As far as I know, it is not possible to send remote commands to the in-built camera apps since there is really no way for the in-app camera apps to handle the remote commands.

但是，上面的视频显示使用蓝牙遥控快门实现了这种遥控。
我注意到不需要安装外部应用程序来使用这种遥控快门设备。设备是否只是向手机发送触摸事件动作？

However, the above video shows that such remote control is achieved using the bluetooth remote shutter. I noticed no external app needs to be installed to use such a remote shutter device. Is the device simply sending a touch event action to the phone?

我想我的真正问题是，这样的远程设备如何向现有设备发送'拍照'命令内置相机应用程序？

I guess my real question is, how would such a remote device send 'take photo' command to the existing in-built camera apps?

谢谢，

推荐答案

自拍杆遥控器基本上很小的蓝牙键盘只有两个键。一个是Volume Up键，用于触发iOS'原生相机快门，另一个键是Enter以触发Android。

The selfie stick remotes are essentially tiny Bluetooth keyboards with just two keys. One is the "Volume Up" key to trigger iOS' native Camera shutter and the other key is "Enter" to trigger Android.

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