Crosswalk Cordova Select multiple Android files

Question

I have a hybrid application built using cordova and angularjs, for Android, I launch the application using a crosswalk.

I am browsing the internet to find a solution for entering an html5 file to allow multiple files to be selected.

I use the following element to select a file:

<input type="file" multiple="multiple" name="files[]" />

I am running Android Lollipop version 5.1.1 and Crosswalk version 20, I also tested versions of Crosswalk 18 and 19. Chrome is installed on my device with the latest version, although I do not think it matters.

When I click on the input element above, I get the expected dialog asking me to choose from my documents or camera. If I want to select from my Documents, I can only select individual files, in this case images. This is true for every application from which I can select images, so the default is "Images", "Video", "Audio", etc. Etc. And other applications, such as Google Photos, all this allows me to select only one file at a time,

In the image below you can see the listed files, a long press on each fragment does not add the file to the multiple selection.

This works in the iOS app version.

After going through all the materials that I can find on the Internet, it seems that the multiple attribute is supported on Android 5+ running Chrome 49+.

, Android - ? - .

Edit

, , Crosswalk.

Answer 1

, , , , (Cordova without Crosswalk). Windows, , , .

1: minSdkVersion \Android\CordovaLib\AndroidManifest.xml 21 : onShowFileChooser API LOLLIPOP (API 21). url[] url, showFileChooser API. API 21 .

2: / onActivityResult . : fileChooserParams, :

    intent.putExtra(Intent.EXTRA_ALLOW_MULTIPLE, true);

: \android\CordovaLib\src\org\apache\cordova\engine\SystemWebChromeClient.java

3: onActivityResult, URL-, intent.getClipData().

:

• Multi-upload . fileChooserParams.
• , .

:

Uri photoUri;

@TargetApi(Build.VERSION_CODES.LOLLIPOP)
@Override
public boolean onShowFileChooser(WebView webView, final ValueCallback<Uri[]> filePathsCallback, final WebChromeClient.FileChooserParams fileChooserParams) {
    // Check and use MIME Type.
    String mimeType = "*/*";
    int ACTION_CODE = FILECHOOSER_RESULTCODE;
    try {
        if (fileChooserParams.getAcceptTypes().length > 0) {
            mimeType = fileChooserParams.getAcceptTypes()[0];
        } else {
            mimeType = "*/*";
        }
    } catch (Exception e) {
        mimeType = "*/*";
    };

    // Check if Mutiple is specified 
    Boolean selectMultiple = false;
    if (fileChooserParams.getMode() == WebChromeClient.FileChooserParams.MODE_OPEN_MULTIPLE) {
        selectMultiple = true;
    };

    Intent intent = new Intent();
    intent.setAction(Intent.ACTION_GET_CONTENT);
    intent.addCategory(Intent.CATEGORY_OPENABLE);
    if (selectMultiple) { intent.putExtra(Intent.EXTRA_ALLOW_MULTIPLE, true); };
    intent.setType(mimeType);
    ACTION_CODE = FILECHOOSER_RESULTCODE;
    final Intent chooserIntent = Intent.createChooser(intent, "Select Source");

    // Add camera intent to the chooser if image and send URI to return full image 
    if (mimeType.equals("image/*")) {
        photoUri = null;
        try {
            File photoFile = createImageFile();
            photoUri = Uri.fromFile(photoFile);
        }
        catch (Exception ex) {
            photoUri = null;
        }
        if (photoUri != null) {
            Intent camIntent = new Intent();
            camIntent.setAction(MediaStore.ACTION_IMAGE_CAPTURE);
            camIntent.putExtra(MediaStore.EXTRA_OUTPUT, photoUri);
            camIntent.putExtra("return-data", true);
            chooserIntent.putExtra(Intent.EXTRA_INITIAL_INTENTS, new Intent [] {camIntent} );
        }
    }

    try {
        parentEngine.cordova.startActivityForResult(new CordovaPlugin() {
            @Override
            public void onActivityResult(int requestCode, int resultCode, Intent intent) {
                if (resultCode ==  Activity.RESULT_OK && intent != null) {
                    if (intent.getData() != null)
                    {
                        Uri[] result = WebChromeClient.FileChooserParams.parseResult(resultCode, intent);
                        filePathsCallback.onReceiveValue(result);
                    }
                    else
                    {
                        if (intent.getClipData() != null) {
                            final int numSelectedFiles = intent.getClipData().getItemCount();
                            Uri[] result = new Uri[numSelectedFiles];
                            for (int i = 0; i < numSelectedFiles; i++) {
                                result[i] = intent.getClipData().getItemAt(i).getUri();
                            }
                            filePathsCallback.onReceiveValue(result);
                        }
                        else {
                            filePathsCallback.onReceiveValue(null);
                        }
                    }
                }
                else if(resultCode ==  Activity.RESULT_OK && (intent == null || intent.getData() == null )) {
                    Uri[] result = new Uri[1];
                    result[0] = photoUri;
                    filePathsCallback.onReceiveValue(result);
                } else {
                    filePathsCallback.onReceiveValue(null);
                }
            }
        }, chooserIntent, ACTION_CODE);
    } catch (ActivityNotFoundException e) {
        Log.w("No activity found to handle file chooser intent.", e);
        filePathsCallback.onReceiveValue(null);
    }
    return true;
}

Answer 2

, . , .