marcusbelcher / android-getusermedia-test

Simple Android application which tests JavaScript getUserMedia access from inside a web app viewed from a WebView

README

This repo is a simple test case for anyone to use - as is - to check JavaScript WebRTC / Camera access via getUserMedia inside a WebView in an Android application. The Application - as default - views another test application I have hosted on GitHub pages:(https://github.com/marcusbelcher/wasm-asm-camera-webgl-test).

The key learnings from this is that you make sure you:

• Have the hardware permissions inside of the AndroidManifiest.xml
• Get runtime permission acceptance
• Handle the Chrome WebView permissions at runtime
• Use the WebRTC adapter.js
• Serve any websites with HTTPS, and if inside of an iframe make sure you allow camera access.

Build

• Checkout this repo
• Open with Android Studio 3.0.1
• Connect an actual device (couldnt get it working in an emulator)
• Build to actual device
• Enable permissions
• Run app

3rd Parties

• https://webrtc.org/native-code/android/

Issues encountered

• Java Versions: API 21, Androud Studio 3+, WebRTC dependency requires Graddle build settings to have the following to allow API level 21 to 26.
  compileOptions { targetCompatibility 1.8 sourceCompatibility 1.8 }
• WebRTC / getUserMedia access: Min API version of 21, this is for runtime onPermissionRequest

Useful links

• https://github.com/webrtc/adapter (https://webrtc.github.io/adapter/adapter-latest.js)
• https://www.webrtc-experiment.com/DetectRTC/
• https://stackoverflow.com/questions/48775154/notreadableerror-could-not-start-source
• https://github.com/googlesamples/android-PermissionRequest
• https://github.com/googlearchive/chromium-webview-samples/tree/master/webrtc-example
• https://bintray.com/package/readme/google/webrtc/google-webrtc

android-getusermedia-test's Issues

Please help, how to build?

Camera not working

I tried with this url: https://schmich.github.io/instascan/ but the camera was not detected. What's wrong here?

failed to connect camera

error 09-10 16:12:10.525 24093-24275/com.example.marcusbelcher.getusermediatest E/cr_VideoCapture: allocate: Camera.open: java.lang.RuntimeException: Fail to connect to camera service
09-10 16:12:10.530 24093-24275/com.example.marcusbelcher.getusermediatest E/cr_VideoCapture: stopCaptureAndBlockUntilStopped: mCamera is null
09-10 16:12:26.639 24093-24275/com.example.marcusbelcher.getusermediatest E/cr_VideoCapture: allocate: Camera.open: java.lang.RuntimeException: Fail to connect to camera service
09-10 16:12:26.642 24093-24275/com.example.marcusbelcher.getusermediatest E/cr_VideoCapture: stopCaptureAndBlockUntilStopped: mCamera is null

in app: tests
Camera: Failed, an error occured and did not inject camera feed into webpage.