Button and Image Property (Andriod)

function renderRadio(row,checked) {
    var baseImage = Titanium.UI.createImageView({
        image : dir_path.R + 'images/ui/icons.png',
        width : 39,
        height : 600
    });
 
    // Here's the view we'll use to do the cropping.
    // It's never displayed either.
    var cropView = Titanium.UI.createView({
        width : 40,
        height : 40
    });
 
    // Add the image to the crop-view.
    // Position it left and above origin.
    cropView.add(baseImage);
    if (checked) {
        baseImage.left = 10;
        baseImage.top = -280;
    } else {
        baseImage.left = 10;
        baseImage.top = -225;
    }
 
    // now convert the crop-view to an image Blob
    var croppedImage = cropView.toImage();
 
    var radioBtn = Ti.UI.createButton({
        right : 10,
        width : 40,
        height : 40,
        image : croppedImage,
        backgroundImage : 'transparent'
    });
 
    row.add(radioBtn);
}

I have this image which contains lots of icons. So I am selecting a section to display in a table row. I am using 'image' property to do this. This work fine for the iPhone, but Andriod displays nothing.

Any way to get it to work for andriod?