Does Appcelerator Titanium deliver iOS silent pushes without a system notification banner?

Answer

Yes. When the APNs payload contains content-available:1 and omits alert, title, body, and sound, iOS 15+ will not show a system notification banner, and Ti.App.addEventListener('notification', …) will fire (provided the app has the remote‑notifications background mode enabled).

Confirmed facts

• The silent‑push pattern is defined by APNs, not by a Titanium‑specific flag.
• Titanium simply forwards the remote‑notification event to JavaScript when iOS delivers it to the app.
• For the callback to fire while the app is backgrounded or launched from a silent push, the built app must include UIBackgroundModes with the value remote-notification (or the equivalent Titanium capability setting).
• The listener works in the foreground regardless of background modes.

Steps to verify

1. Ensure the Titanium project has the Remote notifications background mode enabled (check tiapp.xml or the generated Info.plist for UIBackgroundModes containing remote-notification).
2. Send a push with only { "aps": { "content-available": 1 }, "customKey": "value" } (low APNs priority is recommended).
3. In the app, log the entire event object inside Ti.App.addEventListener('notification', function(e){ Ti.API.info(JSON.stringify(e)); });.
4. Test three states: app foregrounded, app backgrounded, and app force‑quit (iOS will not launch the app for a silent push after a force quit).

Missing diagnostic detail

To give a definitive recommendation for your specific build, please confirm the Titanium SDK version you are using (e.g., 9.x, 10.x). Behavior is stable in recent SDKs, but older versions may have quirks in the notification event delivery.