How to pass parameters in pop method of ionic2

Question

I tried passing parameters in push method of ionic2. like this

this.nav.push(SecondPage, {
    thing1: data1,
    thing2: data2
});

but is ther

Answer 1

For sent data with pop you can use getPrevious() method.

When leaving from current page get previous page and send data

ionViewWillLeave() {
    this.navCtrl.getPrevious().data.formData = {credentials: {...}};
}

In next page get data from navParams

ionViewWillEnter() {
    if (this.navParams.get('formData')) {
      // do something
    }
  }