android - How to use CursorLoader with multi Uri? -

i'm trying data of music file internal , external on device. have used cursorloader loadermanager. how can merge 2 cursorloader 1 on oncreateloader(int id,bundle args):

cursorloader firstloader = new cursorloader(this,mediastore.audio.media.external_content_uri,proje, selection, argsarray, null); cursorloader secondloader = new cursorloader(this,mediastore.audio.media.internal_content_uri,proji, selection, argsarray, null); 

thanks help.