typescript - Ionic 3 menu sidebar -


i want disable menu on login page but got error :

this.menuctrl.enable not function

here code of app.html : 

<ion-split-pane>      <ion-menu id="loggedinmenu" [content]="content">          <ion-header>             <ion-toolbar>                 <ion-title>menu</ion-title>             </ion-toolbar>         </ion-header>          <ion-content class="outer-content">              <ion-list>                 <button ion-item menuclose *ngfor="let p of apppages" (click)="openpage(p)">                     <ion-icon item-start [name]="p.icon" ></ion-icon>                     {{p.title}}                 </button>             </ion-list>         </ion-content>     </ion-menu>     <!-- main navigation -->     <ion-nav [root]="rootpage" #content swipebackenabled="false" main name="app"></ion-nav>  </ion-split-pane>

and here code of app.component.ts : 

import { component, viewchild } '@angular/core'; import { platform,menucontroller, nav, } 'ionic-angular'; import { statusbar } '@ionic-native/status-bar'; import { splashscreen } '@ionic-native/splash-screen'; import { homepage } '../pages/home/home'; import { loginpage } '../pages/login/login'; import { mainpage } '../pages/main/main'; import { mydogspage } '../pages/my-dogs/my-dogs'; import { mycoursespage } '../pages/my-courses/my-courses'; import { friendspage } '../pages/friends/friends'; import { trainerspage } '../pages/trainers/trainers';    export interface pageinterface {   title: string;   component: any;   icon: string; }   @component({   templateurl: 'app.html' }) export class myapp {   @viewchild(nav) nav: nav;   apppages: pageinterface[] = [     { title: 'account', component: mainpage, icon: 'finger-print' },     { title: 'my dogs',  component: mydogspage, icon: 'paw' },     { title: 'my course', component: mycoursespage, icon: 'book' },     { title: 'friends', component: friendspage, icon: 'people' },     { title: 'my trainers', component: trainerspage, icon: 'man' },    ];   rootpage:any;    constructor(platform: platform, statusbar: statusbar, splashscreen: splashscreen) {     this.rootpage=(localstorage.disableintro? loginpage:homepage)     if (localstorage.getitem('token')) {       this.rootpage(mainpage);       console.log('true');      }     platform.ready().then(() => {       // okay, platform ready , our plugins available.       // here can higher level native things might need.       statusbar.styledefault();       splashscreen.hide();     });   } }

and here constructor of login.ts page

constructor(public menuctrl: menucontroller,private alertctrl: alertcontroller, public navctrl: navcontroller, public navparams: navparams, public authenticationprovider: authenticationprovider, public loadingctrl: loadingcontroller) {     this.navctrl = navctrl;     this.menuctrl.enable(false,'loggedinmenu');   }

i don't know why enable function don't work on project work asked in post i've read . please continue working on project .


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