import { NativePageTransitions, NativeTransitionOptions } from '@awesome-cordova-plugins/native-page-transitions/ngx';
constructor(private nativePageTransitions: NativePageTransitions) { }
...
ionViewWillLeave() {
 let options: NativeTransitionOptions = {
    direction: 'up',
    duration: 500,
    slowdownfactor: 3,
    slidePixels: 20,
    iosdelay: 100,
    androiddelay: 150,
    fixedPixelsTop: 0,
    fixedPixelsBottom: 60
   }
 this.nativePageTransitions.slide(options)
   .then(onSuccess)
   .catch(onError);
}
openPage(page: any) {
  this.nativePageTransitions.slide(options);
  this.navCtrl.push(page);
}