Android — 使用OTG接USB Camera裝置會導致錄音沒有聲音的問題

3 min readFeb 26, 2019

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Android USB API

In this post, we are going to learn how to establish communication between the USB device and a connected Android…

blog.fossasia.org

https://www.jianshu.com/p/dd0621383dd3

SpeechRecognizer - Android SDK | Android Developers

Factory method to create a new SpeechRecognizer. Please note thatsetRecognitionListener(RecognitionListener) should be…

stuff.mit.edu

USB accessory overview | Android Developers

Although the USB accessory APIs were introduced to the platform in Android 3.1, they are also available in Android…

developer.android.com

UsbDevice | Android Developers

AccessibilityService.MagnificationController.OnMagnificationChangedListener

developer.android.com

主要是因為有些Camera內建有兼具USB麥克風的關係，所以一接上Camera後會自動的路由到USB音效裝置，又這種混合Camera的USB音效裝置可能在Android上不正常運作，導致可能在使用任何錄音的API的時候，都會因為倍路由到了接上不正常的USB音效裝置，所以會發生沒有聲音的問題

解決方法

Configure on-device developer options | Android Developers

The Settings app on Android includes a screen called Developer options that lets you configure system behaviors that…

developer.android.com

開發模式->停止USB音效路由

就可以靜止USB錄音功能。

Written by JLin

台中 / JAVA / Android /Kotlin / Kotlin Native 對於Kotlin衍生的JVM等技術 Compose for web / desktop / Ktor Server，生成式AI (Gemini/OpenAI)各式應用, 都有小興趣

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