How do I share FB with a custom URL scheme on iPad?

Question

How do I share FB with a custom URL scheme on iPad?

From my hybrid app on iPad, I want to share specific URLs through FB and Twitter when the user clicks the appropriate button. Here is what I did for twitter (which worked):

shareStyleOnTwitter : function(styleId, title) {
    var httpUrl = 'twitter://post?message=';
    var url = 'www.mywebsite.com/'+styleId;
    var params = 'Check out '+title+' on #mywebsite '+url;
    window.location = httpUrl+encodeURIComponent(params);
}

This opens a Twitter application with a post dialog with a message in it. The user just has to click the "tweet" button to publish.

Here I use the FB function (which does not work):

shareStyleOnFB : function(styleId, title, imageUrl){
    var httpUrl = 'fb://publish/profile/#me?text=';
    var params = 'www.mywebsite.com/'+styleId;
    console.log(httpUrl+encodeURIComponent(params));
    window.location = httpUrl+encodeURIComponent(params);
},