您只需要使用返回 MD-项承诺的函数。看到这个普拉克：http://plnkr.co/edit/rgrZ2OM9UXckmFIHtucm?p=$p$pview

You just need to use a function that returns a promise in md-items. See this plunk: http://plnkr.co/edit/rgrZ2OM9UXckmFIHtucm?p=preview

注意：返回从 $ HTTP 承诺将与的对象来解决具有的数据。所以，你必须做这样的事情：

NOTE: Returned promises from $http will be resolved with an object that has the data. So you have to do something like this:

    return $http.get(url).then(function(response){
         return response.data.someOtherPathMaybe; // usually response.data
    })