RadAsyncupload on WebView

[Luis]

Hello everyone.

I'm having a problem with an Android app. The app use a webview control to display and navigate a webpage. On the webpage I have a radasyncupload for uploading images. This woks perfectly both on the web page and the app FOR LOLLIPOP(Android 5.1.1).

My problem happens when I try to upload an image on Jellybean (Android 4.1.2), I'm able to upload the file to the control but when I hit the "Upload" button, that process the images I get the error "Parameter no valid" in the WEBPAGE code line "Bitmap upBmp = (Bitmap)Bitmap.FromStream(CurrentFile.InputStream);"

 

On the android app, when I hit the file upload bar it calls the following code:

public void openFileChooser(ValueCallback<Uri> uploadMsg, String acceptType, String capture) {
                //openFileChooser(uploadMsg, acceptType);
            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 );
            }

And after I choose the file:

 public void onActivityResult (int requestCode, int resultCode, Intent data) {
 
        // code for all versions except of Lollipop
        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP) {
 
            if(requestCode==FILECHOOSER_RESULTCODE) {
                if (null == this.mUploadMessage) {
                    return;
                }
 
                Uri result=null;
 
                try{
                    if (resultCode != RESULT_OK) {
                        result = null;
                    } else {
                        // retrieve from the private variable if the intent is null
                        result = data == null ? mCapturedImageURI : data.getData();
                    }
                }
                catch(Exception e) {
                    Toast.makeText(getApplicationContext(), "activity :"+e, Toast.LENGTH_LONG).show();
                }
 
                mUploadMessage.onReceiveValue(result);
                mUploadMessage = null;
            }
 
        } // end of code for all versions except of Lollipop

...

 

It's a very strange problem and every help will be very appreciated.

[Ivan Danchev]

Hello,

You can try disabling the upload modules and check whether this has any effect.
​
Disable Flash and Silverlight  modules:

<telerik:RadAsyncUpload ID="RadAsyncUpload1" runat="server" DisablePlugins="true" >

Disable FileApi module:

Telerik.Web.UI.RadAsyncUpload.Modules.FileApi.isAvailable = function () {
    return false;
}

This will make the RadAsyncUpload use the Iframe module and could rule out its involvement in the issue.

Invalid data is one possible cause for getting the error. You can check the threads on stackoverflow, this one for instance, that discuss the "Parameter not valid" error and suggest potential reasons for getting it and solutions.

Regards,
Ivan Danchev
Telerik

[Luis]

Thanks, that solved my problem.

[Ivan Danchev]

Hello Luis,

Thank you for getting back to us. I am glad the issue has been resolved.

Regards,
Ivan Danchev
Telerik