Example app for impression tracking on ios
Get a callback when the view/cell is on screen completely [PRECONDITION] for 2 seconds [THRESHHOLD_TIME]; wherby the callback can be used to debug, print, track or perform any potential action.
The example uses CADisplayLink class for timer instead of NSTimer or DispatchQueue. CADisplayLink is both effecient and best
suited for impression tracking as we receive the callback which is synced with screen refresh rate.
- ImpressionTracker.swift
- Cell.swift