Footer not working in my SAPUI5 application

I have a SAPUI5 application and I have placed a footer in this application however my footer is displayed at top of page instead of bottom.

    return new sap.m.Page({

        title: "test",

        content: oForm1,

        footer: new sap.m.Bar({

        })

    });

I have created a form in my app and it is not displayed as height is set to 0 pixel.

var oForm1 = new sap.ui.layout.form.Form("F1",{

        title: new sap.ui.core.Title({text: "(Un)Loading Checklist"}),

        layout: new sap.ui.layout.form.GridLayout(),

        formContainers: [

            new sap.ui.layout.form.FormContainer("F1C1",{

                title: "TEST",

                formElements: [

                ]

            })

        ]

    });

Please suggest.