Add to the device "Share" menu

Just like "Share with Facebook" or "Share via Instagram", and I want to register my app to this menu and be able to get Images from the gallery or any other apps that share images.

I've managed to add my app to this menu by doing this:

<intent-filter>
   <action android:name="android.intent.action.SEND" />
   <category android:name="android.intent.category.DEFAULT" />
   <data android:mimeType="image/*" />
</intent-filter>

And now I see my app there, but how do I get the selected image url/path?

Anyone?