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Мне нужен открытый диктофон или камера, когда пользователи нажимают на этот ввод с помощью WebView, затем после записи он загружает звуковой файл на сервер при нажатии кнопки отправки.

  Image: <input type="file" name="imagefile" id="imagefile" required>
 Sound: <input type="file" name="recordfile" id="recordfile" required>
  

Это код для open camera и sound recorder от webview для всех версий Android

     WebView mWebView = (WebView) findViewById(R.id.activity_main_webview);
    WebSettings webSettings = mWebView.getSettings();
    webSettings.setJavaScriptEnabled(true);
    mWebView.loadUrl("http://example.com");
    webSettings.setJavaScriptEnabled(true);
    webSettings.setSupportZoom(false);
    webSettings.setAllowFileAccess(true);
    webSettings.setAllowContentAccess(true);
    webSettings.setLoadWithOverviewMode(true);
    mWebView.setScrollBarStyle(WebView.SCROLLBARS_OUTSIDE_OVERLAY);
    mWebView.setScrollbarFadingEnabled(false);
    mWebView.getSettings().setBuiltInZoomControls(true);
    mWebView.getSettings().setPluginState(WebSettings.PluginState.ON);


    mWebView.setWebChromeClient(new WebChromeClient()
    {
        // For 3.0  Devices (Start)
        // onActivityResult attached before constructor
        protected void openFileChooser(ValueCallback uploadMsg, String acceptType)
        {
            // Update message
            // Update message
            mUploadMessage = uploadMsg;

            try{

            // Create AndroidExampleFolder at sdcard

            File imageStorageDir = new File(
                    Environment.getExternalStoragePublicDirectory(
                    Environment.DIRECTORY_PICTURES)
                    , "AndroidExampleFolder");

            if (!imageStorageDir.exists()) {
                // Create AndroidExampleFolder at sdcard
                imageStorageDir.mkdirs();
                }

            // Create camera captured image file path and name 
            File file = new File(
                    imageStorageDir   File.separator   "IMG_"
                      String.valueOf(System.currentTimeMillis())
              ".jpg");

            mCapturedImageURI = Uri.fromFile(file);

            // Camera capture image intent
            final Intent captureIntent = new Intent(
                    android.provider.MediaStore.ACTION_IMAGE_CAPTURE);

            captureIntent.putExtra(MediaStore.EXTRA_OUTPUT, mCapturedImageURI);

            Intent i = new Intent(Intent.ACTION_GET_CONTENT);
            i.addCategory(Intent.CATEGORY_OPENABLE);
            i.setType("image/*");

            // Create file chooser intent
            Intent chooserIntent = Intent.createChooser(i, "Image Chooser");

            // Set camera intent to file chooser 
            chooserIntent.putExtra(Intent.EXTRA_INITIAL_INTENTS
                    , new Parcelable[] { captureIntent });

            // On select image call onActivityResult method of activity
            startActivityForResult(chooserIntent, FILECHOOSER_RESULTCODE);

            }
            catch(Exception e){
            Toast.makeText(getBaseContext(), "Exception:" e,
                    Toast.LENGTH_LONG).show();
            }

        }


        // For Lollipop 5.0  Devices

        public boolean onShowFileChooser(WebView mWebView, ValueCallback<Uri[]> filePathCallback, WebChromeClient.FileChooserParams fileChooserParams)
        {
            // Double check that we don't have any existing callbacks
            if (mFilePathCallback != null) {
                mFilePathCallback.onReceiveValue(null);
            }
            mFilePathCallback = filePathCallback;

            Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);

            if (takePictureIntent.resolveActivity(getPackageManager()) != null) {
                // Create the File where the photo should go
                File photoFile = null;
                try {
                    photoFile = createImageFile();
                    takePictureIntent.putExtra("PhotoPath", mCameraPhotoPath);
                } catch (IOException ex) {
                    // Error occurred while creating the File
                    //Log.e(TAG, "Unable to create Image File", ex);
                }

                // Continue only if the File was successfully created
                if (photoFile != null) {
                    mCameraPhotoPath = "file:"   photoFile.getAbsolutePath();
                    takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT,
                            Uri.fromFile(photoFile));
                } else {
                    takePictureIntent = null;
                }
            }

            Intent contentSelectionIntent = new Intent(Intent.ACTION_GET_CONTENT);
            contentSelectionIntent.addCategory(Intent.CATEGORY_OPENABLE);
            contentSelectionIntent.setType("image/*");
            contentSelectionIntent.putExtra("crop", "true");
            contentSelectionIntent.putExtra("scale", true);
            contentSelectionIntent.putExtra("outputX", 40);
            contentSelectionIntent.putExtra("outputY", 40);
            contentSelectionIntent.putExtra("aspectX", 1);
            contentSelectionIntent.putExtra("aspectY", 1);
            contentSelectionIntent.putExtra("return-data", true);

            Intent[] intentArray;
            if (takePictureIntent != null) {
                intentArray = new Intent[]{takePictureIntent};
            } else {
                intentArray = new Intent[0];
            }

            Intent chooserIntent = new Intent(Intent.ACTION_CHOOSER);
            chooserIntent.putExtra(Intent.EXTRA_INTENT, contentSelectionIntent);
            chooserIntent.putExtra(Intent.EXTRA_TITLE, "Image Chooser");
            chooserIntent.putExtra(Intent.EXTRA_INITIAL_INTENTS, intentArray);


            startActivityForResult(chooserIntent, 1);

            return true;
        }

        //For Android 4.1 only
        protected void openFileChooser(ValueCallback<Uri> uploadMsg, String acceptType, String capture)
        {
            mUploadMessage = uploadMsg;
            Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
            intent.addCategory(Intent.CATEGORY_OPENABLE);
            intent.setType("image/*");
            startActivityForResult(Intent.createChooser(intent, "File Browser"), FILECHOOSER_RESULTCODE);
        }

        protected void openFileChooser(ValueCallback<Uri> uploadMsg)
        {
            mUploadMessage = uploadMsg;
            Intent i = new Intent(Intent.ACTION_GET_CONTENT);
            i.addCategory(Intent.CATEGORY_OPENABLE);
            i.setType("image/*");
            startActivityForResult(Intent.createChooser(i, "File Chooser"), FILECHOOSER_RESULTCODE);
        }
    });