Кнопка загрузки в Android WebView не работает

Question

это мое изображение моего приложения

кнопка не работает, средство выбора файлов не открывается, но если я загружаю из Интернета, оно работает хорошо, но не работаетв моем WebView.

И это мой HTML-код:

<div class="form-group">
   <label for="profilepath" class="control-label col-md-3"><?php echo $this->lang->line('profilepath') ?></label>
   <div class="col-md-4" value="">
      <?php 
          echo form_upload(array(
             'autocomplete' => 'off',
             'name' => 'profilepath',
             'accept' => 'image'
          )); 
       ?>
    </div>
 </div>

Мой Java-код для WebView:

public class EditActivity extends AppCompatActivity  {

private static final String TAG = EditActivity.class.getSimpleName();
private final static int FCR = 1;
WebView webView;
private String mCM;
private ValueCallback<Uri> mUM;
private ValueCallback<Uri[]> mUMA;

@Override
protected void onActivityResult(int requestCode, int resultCode,
                                Intent intent) {
    super.onActivityResult(requestCode, resultCode, intent);

    if (Build.VERSION.SDK_INT >= 21) {
        Uri[] results = null;

        //Check if response is positive
        if (resultCode == Activity.RESULT_OK) {
            if (requestCode == FCR) {
                if (null == mUMA) {
                    return;
                }
                if (intent == null) {
                    //Capture Photo if no imabe available
                    if (mCM != null) {
                        results = new Uri[]{Uri.parse(mCM)};
                    }
                } else {
                    String dataString = intent.getDataString();
                    if (dataString != null) {
                        results = new Uri[]{Uri.parse(dataString)};
                    }
                }
            }
        }
        mUMA.onReceiveValue(results);
        mUMA = null;
    } else {
        if (requestCode == FCR) {
            if (null == mUM) return;
            Uri result = intent == null || resultCode != RESULT_OK ? null : intent.getData();
            mUM.onReceiveValue(result);
            mUM = null;
        }
    }
}

@SuppressLint({"SetJavascriptEnabled", "WrongViewCast"})
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_edit);
    ActionBar actionBar = getSupportActionBar();
    actionBar.hide();

    if (Build.VERSION.SDK_INT >= 23 && (ContextCompat.checkSelfPermission(this,
            Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED ||
            ContextCompat.checkSelfPermission(this, Manifest.permission.CAMERA) !=
            PackageManager.PERMISSION_GRANTED)) {
        ActivityCompat.requestPermissions(EditActivity.this, new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE,
        Manifest.permission.CAMERA} ,1);
    }

    webView = (WebView) findViewById(R.id.edit);
    assert webView != null;

    WebSettings webSettings = webView.getSettings();
    webSettings.setJavaScriptEnabled(true);
    webSettings.setAllowFileAccess(true);

    if (Build.VERSION.SDK_INT >= 21) {
        webSettings.setMixedContentMode(0);
        webView.setLayerType(View.LAYER_TYPE_HARDWARE, null);
    } else if (Build.VERSION.SDK_INT >= 19) {
        webView.setLayerType(View.LAYER_TYPE_HARDWARE, null);
    } else if (Build.VERSION.SDK_INT < 19) {
        webView.setLayerType(View.LAYER_TYPE_HARDWARE, null);
    }

    webView.setWebViewClient(new Callback());
    webView.loadUrl("https://www.earworks.net/sieko/site/edit/");
    webView.getSettings().setLayoutAlgorithm(WebSettings.LayoutAlgorithm.SINGLE_COLUMN);
    webView.setWebChromeClient(new WebChromeClient() {

        //For Android 3.0+
        public void openFileChooser(ValueCallback<Uri> uploadMsg) {

            mUM = uploadMsg;
            Intent i = new Intent(Intent.ACTION_GET_CONTENT);
            i.addCategory(Intent.CATEGORY_OPENABLE);
            i.setType("*/*");
            EditActivity.this.startActivityForResult(Intent.createChooser(i, "File Chooser"), FCR);
        }

        //For Android 3.0+, above method not supported in some android 3+ versions, in such case we use this
        public void openFileChooser (ValueCallback uploadMsg, String acceptType) {

            mUM = uploadMsg;
            Intent i = new Intent(Intent.ACTION_GET_CONTENT);
            i.addCategory(Intent.CATEGORY_OPENABLE);
            i.setType("*/*");
            EditActivity.this.startActivityForResult(Intent.createChooser(i, "File Browser"), FCR);
        }

        //For Android 4.1+
        public void openFileChooser(ValueCallback<Uri> uploadMsg, String acceptType, String capture) {

            mUM = uploadMsg;
            Intent i = new Intent(Intent.ACTION_GET_CONTENT);
            i.addCategory(Intent.CATEGORY_OPENABLE);
            i.setType("*/*");
            EditActivity.this.startActivityForResult(Intent.createChooser(i, "File Chooser"), EditActivity.FCR);
        }

        //For Android 5.0+
        public  boolean onShowFileChooser(WebView webView, ValueCallback<Uri[]> filePathCallback,
                                          WebChromeClient.FileChooserParams fileChooserParams) {
            if (mUMA != null) {
                mUMA.onReceiveValue(null);
            }

            mUMA = filePathCallback;
            Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
            if (takePictureIntent.resolveActivity(EditActivity.this.getPackageManager()) != null) {

                File photoFile = null;

                try {
                    photoFile = createImageFile();
                    takePictureIntent.putExtra("PhotoPath", mCM);
                } catch (IOException ex) {
                    Log.e(TAG, "Image file creation failed", ex);
                }
                if (photoFile != null) {
                    mCM = "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("*/*");
            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, FCR);

            return true;
        }
    });
}

//Create an image file
private File createImageFile() throws IOException {

    @SuppressLint("SimpleDateFormat") String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());
    String imageFileName = "img_" + timeStamp + "_";
    File storageDir = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES);
    return File.createTempFile(imageFileName, ".jpg", storageDir);
}

@Override
public boolean onKeyDown (int keyCode, @NonNull KeyEvent event) {

    if (event.getAction() == KeyEvent.ACTION_DOWN) {

        switch (keyCode) {
            case KeyEvent.KEYCODE_BACK:

                if (webView.canGoBack()) {
                    webView.goBack();
                } else {
                    finish();
                }

                return true;
        }
    }

    return super.onKeyDown(keyCode, event);
}

@Override
public void onConfigurationChanged(Configuration configuration) {
    super.onConfigurationChanged(configuration);
}

public class Callback extends WebViewClient {
    public void onReceivedError (WebView view, int errorCode, String description, String failingUrl) {
        Toast.makeText(getApplicationContext(), "Failed Loading App!", Toast.LENGTH_SHORT).show();
    }
}

}