angular-docs-cn/public/docs/js/latest/api/router/OnActivate-interface.jade

p.location-badge.
  exported from <a href='../router'>angular2/router</a>
  defined in <a href="https://github.com/angular/angular/tree/2.0.0-alpha.34/modules/angular2/src/router/interfaces.ts#L7-L34">angular2/src/router/interfaces.ts (line 7)</a>

:markdown
  Defines route lifecycle method [onActivate], which is called by the router at the end of a
  successful route navigation.
  
  For a single component's navigation, only one of either [onActivate] or [onReuse] will be called,
  depending on the result of [canReuse].
  
  If `onActivate` returns a promise, the route change will wait until the promise settles to
  instantiate and activate child components.
  
  ## Example
  ```
  @Directive({
    selector: 'my-cmp'
  })
  class MyCmp implements OnActivate {
    onActivate(next, prev) {
      this.log = 'Finished navigating from ' + prev.urlPath + ' to ' + next.urlPath;
    }
  }
   ```
  
  
.l-main-section
  h2 Members
  .l-sub-section
    h3 onActivate

    
    pre.prettyprint
      code.
        onActivate(nextInstruction: ComponentInstruction, prevInstruction: ComponentInstruction)
    
    :markdown