[AC-1474] openPhotoGallery + Remote Image = NullPointerException

Problem

I've come across a nasty bug when using openPhotoGallery() where accessing the returned media.nativePath causes a NullPointException. Now, this only happens when the selected media, for some reason, appears to become a remote media (i.e. after automatic backup of Photo Gallery). Even weirder, if I use an ImageView to display the image, it is displayed correctly. Initially I hit the bug when trying to upload the selected image. I was then able to reproduce the bug with this minimal code:

Test case

1. Create a new Default Alloy Project 2. Replace the initial doClick() function, within index.js:

function doClick(e){
	Titanium.Media.openPhotoGallery({
    	success:function(event) {
    		try {
    			Ti.API.info('event.media.nativePath: ' + event.media.nativePath); 
    		}
    		catch(e) {
    			Ti.API.error(e.message);
    		}	
            Ti.API.info('event.media.file.nativePath: ' + event.media.file.nativePath);   
        }
	});
};

$.index.open();

3. Select a picture (using Google Photos, now the default on Android L) that has been backed up to the Cloud

Logs

Output for a picture before it has been backed up / local picture:

[INFO] :   event.media.nativePath: file:///storage/emulated/0/DCIM/Camera/IMG_20141210_232913.jpg
[INFO] :   event.media.file.nativePath: content://media/external/images/media/20559

Output for a picture after it has been backed up / remote picture:

[ERROR] :  Attempt to invoke virtual method 'char[] java.lang.String.toCharArray()' on a null object reference
[INFO] :   event.media.file.nativePath: content://com.google.android.apps.photos.content/0/https%3A%2F%2Flh6.googleusercontent.com%2FxAiJOX8hSsSutQeA6X96og8RzpRo2PyOtWi_49FaNSMv%3Ds0-d