appcelerator titanium base64 encode blob objects

I am developing a mobile (iphone/android) application using appcelerator titanium (sdk 1.6.2). At a certain point in the app the user choses an image that 开发者_Go百科should be shown in an imageView, base64 encoded, then uploaded to my server. The problem is the success event of the photo gallery returns the selected image as a blob object and the Titanium.Utils.base64encode method only accepts string values! Is there any way to convert Titanium.Blob objects to strings?

Here is the code snippet:

var imageView = Titanium.UI.createImageView({
height:200,
width:200,
top:20,
left:10,
backgroundColor:'#999'
});

Titanium.Media.openPhotoGallery({

success:function(event)
{
    var cropRect = event.cropRect;
    var image = event.media;//blob object

    // set image view
    Ti.API.debug('Our type was: '+event.mediaType);
    if(event.mediaType == Ti.Media.MEDIA_TYPE_PHOTO)
    {
        imageView.image = image;// this works
        var imgStr=Ti.Utils.base64encode(image);// doesn't work because 'image' has to be a string!, but how?
    }
    else
    {

    }

    Titanium.API.info('PHOTO GALLERY SUCCESS cropRect.x ' + cropRect.x + ' cropRect.y ' + cropRect.y  + ' cropRect.height ' + cropRect.height + ' cropRect.width ' + cropRect.width);

},
allowEditing:true,
popoverView:popoverView,
arrowDirection:arrowDirection,
mediaTypes:[Ti.Media.MEDIA_TYPE_VIDEO,Ti.Media.MEDIA_TYPE_PHOTO]
});

Thank you,

var imgStr=Ti.Utils.base64encode(image.toString());

.toString() converts something to a string representation

This worked for me.

var image = event.media;
var imgStr = Ti.Utils.base64encode(image).toString();

i just posted some code for a module to do this conversion, I know a patch is coming from appcelerator, but the module might be useful to you now.

Clearly Innovative Thoughts - Titanium Appcelerator Quickie: base64encode iOS Module