Office 365 - How to refer and apply custom master page in sharepoint hosted app?

Question

I have a custom master page. I want this master page to be applied for an app(sharepoint hosted). The app contains an aspx page.

By default, the aspx inherits the master page as below:

<%@ Page Inherits="Microsoft.SharePoint.WebPartPages.WebPartPage, Microsoft.SharePoint, Version=15.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c" MasterPageFile="~masterurl/default.master" Language="C#" %>

When I add reference to inherit Seattle.Master as below - the seattle.master is perfectly applied to the app :

<%@ Page Inherits="Microsoft.SharePoint.WebPartPages.WebPartPage, Microsoft.SharePoint, Version=15.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c" MasterPageFile="~site/_catalogs/masterpage/seattle.master" Language="C#" %>

Same way, if I apply my custom master page(below is the code), it doesnt work. The app throws error.

<%@ Page Inherits="Microsoft.SharePoint.WebPartPages.WebPartPage, Microsoft.SharePoint, Version=15.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c" MasterPageFile="~site/_catalogs/masterpage/MyCustomMasterPage.master" Language="C#" %>

Note: The Seattle.Master and CustomMasterPage.Master are in the same location.

I want to know, how we can apply custom master page to our sharepoint hosted app in Office 365.

Please suggest

Thank You.

Answer 1

Creating Custom Master Page for Hosted Apps

Create a Module in your project to add the master page that you just created above.

• Add your custom master page to this module.

• You will need to modify the elements.xml file so that your master page will go to the master page gallery of your app as below:

  <File Path="ModuleName\CustomMasterPageName.master" Url="_catalogs/masterpage/ CustomMasterPageName.master" Type="GhostableInLibrary"></File>

• Replace ModuleName with your module name.

• Replace CustomMasterPageName with your master page name.

• The above change will deploy the master page into the master page catalog document library of your app.

• GhostableInLibrary will make sure the document is placed within the document library.

Change the master page name for your App Pages as below:

MasterPageFile="~site/_catalogs/masterpage/ CustomMasterPageName.master"