Mob 0.9.29 released!

Mob 0.9.29 has been released.

Added

• on_touch: per-finger touch on any node, with the position inside it.
  on_touch: {pid, tag} delivers {:touch, tag, %{phase, pointer_id, x, y, width, height, ts}} for every finger that lands on the node: :down,
  :up or :cancel, plus :move with moves: true (throttled per finger,
  16 ms / 1 dp by default, throttle: and delta: to tune). A finger
  belongs to the node it landed on until it lifts, so sliding onto another
  on_touch node sends that node nothing; several fingers on several nodes
  are independent, and every :down gets exactly one :up or :cancel
  however often the screen re-renders. The down isn’t delayed by slop or a
  double-tap wait, and it observes without consuming, so on_tap, long
  press, press in/out and scrolling keep working. Mob.Event.Touch,
  Mob.Test.touch/4 and Mob.ScreenCase.render_touch/4 build the same
  message for tests. See the components guide, “Per-finger touch”, and
  decisions/2026-11-12-per-node-multi-pointer-on-touch.md. Checked on a
  Moto G Power 2021 (Android 11: two fingers on two nodes, two on one node,
  drag capture, taps, cancel) and an iPhone SE (two real fingers on two
  nodes, drag capture, taps). (MOB-518)

Changed

• A tap on a node that also declares on_touch resolves
  identity-tolerantly, as a press node’s already does: the touch-down
  usually re-renders the screen, and the strict lookup dropped the tap whose
  handle came from the render before (seen on an iPhone SE). (MOB-518)

Upgrading

• on_touch needs iOS 18 or newer (iOS 17 ignores it and logs once). On
  Android it needs the MobBridge.kt / beam_jni.c from the mob_new
  release that includes MOB-518; an app generated earlier must port those
  changes (listed in mob_new’s CHANGELOG). (MOB-518)

Mob Info

Classification: Hybrid Mobile Framework
Description: BEAM-on-device mobile framework for Elixir. OTP runs inside your iOS and Android apps — embedded directly in the app bundle, no server required. Screens are GenServers; the UI is rendered by Compose and SwiftUI via a thin NIF.
Forum/tag: mob

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