docRef.addSnapshotListener { doc, e -> if (doc != null) { if (doc.exists()) { // do something } else { // do something } } else { e!!.printStackTrace() }}docRef.addSnapshotListener { doc, e -> if (doc != null) { if (doc.exists()) { // do something } else { // do something } } else { e!!.printStackTrace() }}❤️ Is this article helpful?
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✨ By Desmond Lua
A dream boy who enjoys making apps, travelling and making youtube videos. Follow me on @d_luaz
👶 Apps I built
Travelopy - discover travel places in Malaysia, Singapore, Taiwan, Japan.