Dynamic height

app.js

var win = Ti.UI.createWindow();

var leftTileView = Ti.UI.createView({
    backgroundColor:"red",
    height:(Math.random()*200),
    width:"59%",
    left:0
});

var tileContainer = Ti.UI.createView({
    height:Ti.UI.SIZE,
    width:Ti.UI.FILL,
    borderWidth:2,
    borderColor:"red"
});

tileContainer.add(leftTileView);
win.add(tileContainer);

var rightTileView = Ti.UI.createView({
    width:"41%",
    right:0,
    height:Ti.UI.FILL
});
var rightTopTile = Ti.UI.createView({
    backgroundColor:"blue",
    top:0,
    height:"50%"
});


var rightBottomTile = Ti.UI.createView({
    backgroundColor:"green",
    bottom:0,
    height:"50%"
});



setTimeout(function(){
    rightTileView.height = tileContainer.size.height
    tileContainer.add(rightTileView);
    rightTileView.add(rightTopTile);
    rightTileView.add(rightBottomTile);
    
}, 1);