Is there anyone familiar with how to return a simple value (or JSON) by clicking on the return button in Ionic 2's navigation bar?
I understand that navParam can be used to send a value when pushing a page, but I am unsure how to implement the same functionality for the pop action and connect it to the return button in the navigation bar.
Have you seen the discussion on implementing back navigation with parameters in this open feature request?
An interesting approach is to use a Promise passed through NavParams:
For the Parent Page:
new Promise((resolve, reject) => {
this.nav.push(ChildPage, {resolve: resolve});
}).then(data => {
// handle data
});
For the Child Page:
this.navParams.get('resolve')('some data');
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