[TIMOB-19919] separates event and callback for onBackPressed #6859
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Test code in ticket description: AC-96
This allows you to listen to the back button event without influencing the default behavior. Therefor, a new property was added (
Ti.UI.Window.onBack
) which lets you define a callback that explicitly overrides onBackPressed.The existing
androidback
event fires without impact on the behavior. This allows you to execute additional code.