Executing Ionic function before application shutdown

Does anyone know of a function that can be triggered when the app is about to exit, close, or go into the background? Essentially any event that indicates "the user has stopped using the app"?

In my app, I create a 'user log' that keeps track of the user's actions within the app. Instead of constantly sending data to the server each time an event occurs, I would like to send all the data at once just before the user stops using the app (whether by closing it completely or sending it to the background).

If such a function exists, where should it be implemented? Should it be placed in the app.js file, or does it need to be added to every controller within the app?

javascriptangularjscordovaionic-framework

Answer №1

This snippet of code is effective in detecting exit events for an ionic2 native app and also works smoothly in a web browser environment. When used in a browser, it triggers whenever the URL reload button is clicked or when the browser tab is closed.

platform.pause.subscribe(event => {
  this.SaveOptions();
});

window.addEventListener('beforeunload', () => {
  this.SaveOptions();
});

Answer №2

If you're looking for a comprehensive list of events in Cordova, be sure to check out the official documentation:

One event worth noting is the Pause event:

This event occurs when an application goes into the background.

document.addEventListener("pause", yourCallbackFunction, false);

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