Allowing microphone access(permission) in WebView [Android Studio] [Java]

android, android-permissions, android-studio, java, webview

Solution

You can use the following code that I copied from http://web.archive.org/web/20160111030837/http://developer.android.com/training/permissions/requesting.html —

<uses-permission android:name="android.permission.MODIFY_AUDIO_SETTINGS" />

Example:

MainActivity

public class MainActivity extends AppCompatActivity {
    private static final int MY_PERMISSIONS_REQUEST_RECORD_AUDIO = 101;
    private ActivityMainBinding mBinding;
    private PermissionRequest myRequest;

    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        mBinding = DataBindingUtil.setContentView(this, R.layout.activity_main);
        setWebView();
    }

    private void setWebView() {
        mBinding.webView.getSettings().setJavaScriptEnabled(true);
        mBinding.webView.getSettings().setJavaScriptCanOpenWindowsAutomatically(true);
        mBinding.webView.setWebViewClient(new WebViewClient());

        mBinding.webView.getSettings().setSaveFormData(true);
        mBinding.webView.getSettings().setSupportZoom(false);
        mBinding.webView.getSettings().setCacheMode(WebSettings.LOAD_NO_CACHE);
        mBinding.webViemBinding.webView.getSettings().setPluginState(WebSettings.PluginState.ON);


        mBinding.webView.setWebChromeClient(new WebChromeClient() {
            @Override
            public void onPermissionRequest(final PermissionRequest request) {
                myRequest = request;

                for (String permission : request.getResources()) {
                    switch (permission) {
                        case "android.webkit.resource.AUDIO_CAPTURE": {
                            askForPermission(request.getOrigin().toString(),

Manifest.permission.RECORD_AUDIO, MY_PERMISSIONS_REQUEST_RECORD_AUDIO); break; } } } } });

        mBinding.webView.loadUrl("<your url");
    }

    @Override
    public void onBackPressed() {
        if (mBinding.webView.canGoBack()) {
            mBinding.webView.goBack();
        } else {
            super.onBackPressed();
        }
    }

    @Override
    public void onRequestPermissionsResult(int requestCode,
                                           String permissions[], int[] grantResults) {
        switch (requestCode) {
            case MY_PERMISSIONS_REQUEST_RECORD_AUDIO: {
                Log.d("WebView", "PERMISSION FOR AUDIO");
                if (grantResults.length > 0
                        && grantResults[0] == PackageManager.PERMISSION_GRANTED) {


                    // permission was granted, yay! Do the
                    // contacts-related task you need to do.
                    myRequest.grant(myRequest.getResources());
                    mBinding.webView.loadUrl("<your url>");

                } else {

                    // permission denied, boo! Disable the
                    // functionality that depends on this permission.
                }
            }
            // other 'case' lines to check for other
            // permissions this app might request
        }
    }
    public void askForPermission(String origin, String permission, int requestCode) {
        Log.d("WebView", "inside askForPermission for" + origin + "with" + permission);

        if (ContextCompat.checkSelfPermission(getApplicationContext(),
                permission)
                != PackageManager.PERMISSION_GRANTED) {

            // Should we show an explanation?
            if (ActivityCompat.shouldShowRequestPermissionRationale(MainActivity.this,
                    permission)) {

                // Show an expanation to the user *asynchronously* -- don't block
                // this thread waiting for the user's response! After the user
                // sees the explanation, try again to request the permission.

            } else {

                // No explanation needed, we can request the permission.

                ActivityCompat.requestPermissions(MainActivity.this,
                        new String[]{permission},
                        requestCode);
            }
        } else {
            myRequest.grant(myRequest.getResources());
        }
    }

}

Mainfest.xml:

<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.MICROPHONE" />
<uses-permission android:name="android.permission.RECORD_AUDIO" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-feature android:name="android.hardware.audio.low_latency" />
<uses-permission android:name="android.permission.MODIFY_AUDIO_SETTINGS" />
<uses-feature android:name="android.hardware.audio.pro" />
<uses-feature android:name="android.hardware.microphone"/>      

Build.gradle:

android {
    compileSdkVersion 26
    defaultConfig {
        applicationId "myapp.example.com.myapplication"
        minSdkVersion 21
        targetSdkVersion 21
        versionCode 1
        versionName "1.0"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }

Problem

Original source