angular - Angular2 - How do I delay initial load until service completes? -

i have angular2 rc6 application , need defer loading pages until after functionality executed.

i have service determines uri webapi. need application wait until url determined before tries load data. if hide main application in app.component, *ngif, routing errors because router outlet not exists.

before rc5/6 manually bootstrapped application after service get's uri.

if use router can use canactivate, canactivatechild.

see

• https://angular.io/docs/ts/latest/guide/router.html#!#guards
• resolve value *before* activating route in angular 2
• angular2 canactivate() calling async function

for loading once before app initialization can use app_initializer explained in how pass parameters rendered backend angular2 bootstrap method