通过WebRTC，getUserMedia肯定可行。
设置您的WebView允许的权限，并使用loadURL()加载HTML：
WebView myWebView = (WebView) findViewById(R.id.webview);
myWebView.getSettings().setJavaScriptEnabled(true);
myWebView.getSettings().setAllowFileAccessFromFileURLs(true);
myWebView.getSettings().setAllowUniversalAccessFromFileURLs(true);
myWebView.setWebViewClient(new WebViewClient());
myWebView.setWebChromeClient(new WebChromeClient() {
// Grant permissions for cam
@Override
public void onPermissionRequest(final PermissionRequest request) {
Log.d(TAG, “onPermissionRequest”);
MainActivity.this.runOnUiThread(new Runnable() {
@TargetApi(Build.VERSION_CODES.M)
@Override
public void run() {
Log.d(TAG, request.getOrigin().toString());
if(request.getOrigin().toString().equals(“file:///”)) {
Log.d(TAG, “GRANTED”);
request.grant(request.getResources());
} else {
Log.d(TAG, “DENIED”);
request.deny();
}
}
});
}
});
myWebView.loadUrl(LOCAL_FILE);
然后通过你的JS文件中使用getUserMedia，假设你在HTML文件中有一个标签：
var constraints = { video: { width: 800, height: 800 } };
navigator.mediaDevices.getUserMedia(constraints)
.then(function(mediaStream) {
var video = document.querySelector(‘video’);
video.srcObject = mediaStream;
video.onloadedmetadata = function(e) {
video.play();
};
})
.catch(function(err) { console.log(err.name + “: ” + err.message); }); // always check for errors at the end.
最后，确保你有你的清单中设置权限：