code

//Index.xml

<TableViewRow  height="Ti.UI.SIZE" id="row_audio">
    <View layout='vertical' id="audio_section" dataCollection="VideoG" height="Ti.UI.SIZE" top='10'>
            <Require src="Galerias/Componentes/Audio"></Require>
    </View>
</TableViewRow>

// Index.js
var model = Alloy.createModel('VideoG',{});
Alloy.Collections.VideoG.add(model);

Alloy.Collections.VideoG.on("add remove", function(e){
    if(OS_IOS) $.row_audio.height = (Alloy.Collections.VideoG.length * 280) + "dp";
    if(OS_ANDROID) $.row_audio.height = (Alloy.Collections.VideoG.length * 240) + "dp";
    $.audio_section.height = (Alloy.Collections.VideoG.length != 0) ? Ti.UI.FILL:  0;
    (Alloy.Collections.VideoG.length != 0) ? $.audio_section.show(): $.audio_section.hide();
});

//Audio.xml
<Alloy>
    <Collection src='Galeria'></Collection>
    <Collection src="VideoG"/>
    <View id="row_audio">
        <TextField id="autor" value="{autor}" hintText="Autor" onChange="actualizaAutor"></TextField>
    </View>
</Alloy>