screentinker/android
ScreenTinker 5d56e538af Play the first item of a playlist on a fresh panel, instead of skipping it
A newly paired panel always learns its playlist BEFORE the media arrives, so
start() finds nothing playable and the 3-second content re-check is what really
begins playback. updatePlaylist() has already seeded currentIndex = 0 for a
playlist that has not started, but the re-check advanced PAST that index — so
the first pass ran 1,2,3,0 and item 1 only appeared after the list wrapped.

On the emulator, a fresh pair with a 4-item playlist reproduced it every time:

  Starting playback
  Playing: red.png (index 1)      <- clip32.mp4 (index 0) never got its turn
  Playing: clip7.mp4 (index 2)
  Playing: blue.png (index 3)
  Playing: clip32.mp4 (index 0)   <- 54s late, on the second pass

On a two-item playlist that is indistinguishable from "only one of the two ever
plays", which is how it was reported.

The distinction the re-check was missing is hasContentOnScreen. With content up,
currentIndex is a real position that has had its turn and the scan must move past
it. With nothing up, currentIndex is only where playback INTENDED to start, so
skipping it drops that item. PlaylistSelection.recheckIndex now makes that choice
explicitly, and playableFromIndex treats a negative index as "no position yet"
rather than wrapping onto the last item.

Verified on the emulator against the same cold start: the first pass is now
0,1,2,3,4 in order. Playback resume (#234) is untouched — it never reaches the
re-check when its target is cached, confirmed by an Activity relaunch resuming
mid-playlist as before.

Tests: 6 new cases in PlaylistSelectionTest covering both sides of the rule, the
still-downloading item, the no-position-yet start, and the empty case.
Android 151/151, server 1298/1298.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Uaeo9MvzKoyXuN6ZsbhtkL
2026-08-06 16:26:34 -05:00
..
app Play the first item of a playlist on a fresh panel, instead of skipping it 2026-08-06 16:26:34 -05:00
gradle/wrapper Initial open source release 2026-04-08 12:14:53 -05:00
build.gradle.kts Initial open source release 2026-04-08 12:14:53 -05:00
gradle.properties Initial open source release 2026-04-08 12:14:53 -05:00
gradlew Initial open source release 2026-04-08 12:14:53 -05:00
gradlew.bat Initial open source release 2026-04-08 12:14:53 -05:00
settings.gradle.kts Initial open source release 2026-04-08 12:14:53 -05:00