How to use getUserMedia with Cordova on Android?

Question

A preview of the camera’s input into the video element using getUserMediaworks fine in Chrome, but it is interrupted as soon as I run the same code in the Cordova container. Any ideas that might trigger this?

Sample code.

Added an example of using Mozilla gUM polyfill:

(()=>{
  var promisifiedOldGUM = function(constraints) {

    var getUserMedia = (
        navigator.getUserMedia ||
        navigator.webkitGetUserMedia ||
        navigator.mozGetUserMedia
    );

    if(!getUserMedia) {
      return Promise.reject(new Error('getUserMedia is not implemented in this browser'));
    }

    return new Promise(function(resolve, reject) {
      getUserMedia.call(navigator, constraints, resolve, reject);
    });

  }

  if(navigator.mediaDevices === undefined) {
    navigator.mediaDevices = {};
  }

  if(navigator.mediaDevices.getUserMedia === undefined) {
    navigator.mediaDevices.getUserMedia = promisifiedOldGUM;
  }





  function initCamera() {
      const constraints = { audio: false, video: { width: 1280, height: 720 } };
      const videoElement = document.createElement('video');
      videoElement.style.width = '100px';
      videoElement.style.height = '100px';
      document.body.appendChild(videoElement);

      navigator.mediaDevices
          .getUserMedia(constraints)
          .then(
            stream => {
              videoElement.src = window.URL.createObjectURL(stream);
              videoElement.onloadedmetadata = () => {
                videoElement.play();
              };
            }
          )
          .catch(
            err => {
              console.log('The following error occurred: ' + err.message)
            }
          );
  }

  initCamera();

})()

(note that both new and obsolete gUM APIs do not work). The result is an empty black element <video>. There are no errors. Initially, I assumed that this problem was related to the permissions of AndroidManifest.xml and CSP, but fixing them does not matter.

CSP Configuration:

<meta http-equiv="Content-Security-Policy" content="default-src 'self' android-webview-video-poster: data: gap: https://ssl.gstatic.com 'unsafe-eval'; style-src 'self' 'unsafe-inline'; media-src * blob:">

AndroidManifest.xml (features and permissions)

<uses-sdk android:minSdkVersion="14" android:targetSdkVersion="23" />
<uses-feature android:name="android.hardware.camera" />
<uses-feature android:name="android.hardware.camera.autofocus" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.CAMERA" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />

Answer 1

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​​(Android 7.0):

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