<uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>

    @Override
    protected void onCreate(Bundle savedInstanceState)
    {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M)
        {
            requestPermissions(new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE}, 1);
            requestPermissions(new String[]{Manifest.permission.READ_EXTERNAL_STORAGE}, 1);
            requestPermissions(new String[]{Manifest.permission.CAMERA}, 1);
            requestPermissions(new String[]{Manifest.permission.INTERNET}, 1);
        }
}
private void initWebview()
    {
        myView = (WebView) this.findViewById(R.id.myWebview);
        myView.getSettings().setAllowFileAccess(true);
        myView.getSettings().setJavaScriptEnabled(true);
        myView.setWebViewClient(new WebViewClient());
        myView.setWebChromeClient(new WebChromeClient()
        {
            // For Android 5.0
            public boolean onShowFileChooser(WebView view, ValueCallback<Uri[]> filePath, WebChromeClient.FileChooserParams fileChooserParams)
            {
                // Double check that we don't have any existing callbacks
                if (mFilePathCallback != null) {
                    mFilePathCallback.onReceiveValue(null);
                }
                mFilePathCallback = filePath;

                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;
                    }
                }

                //File picker
                Intent contentSelectionIntent = new Intent(Intent.ACTION_GET_CONTENT);
                contentSelectionIntent.addCategory(Intent.CATEGORY_OPENABLE);
                contentSelectionIntent.setType("image/*");

                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);
                takePictureIntent.putExtra("PhotoPath", mCameraPhotoPath);
                takePictureIntent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION | Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
                startActivityForResult(chooserIntent, INPUT_FILE_REQUEST_CODE);

                return true;
            }

  private File createImageFile() throws IOException {
        // Create an image file name
        String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());
        String imageFileName = "JPEG_" + timeStamp + "_";
        File storageDir = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES);
        File imageFile = File.createTempFile(imageFileName, ".jpg", storageDir);

        return imageFile;
    }