Ion-select reload same page, but selected option get lost

I just found a solution:

import { ViewChild  } from '@angular/core';
import { Content  } from 'ionic-angular';

export class TestPage {
    @ViewChild(Content) content: Content;

    update(){
        this.content.resize();
    }
}

Instead of navCtrl.push(samePage) the update function is called.

source: