The equalizer stopped applying after another app interrupted audio (e.g. a
navigation app's voice prompt): play a station with EQ working, let the
prompt speak, resume -- the audio sounds flat until the station is
re-tapped.
debeReaplicarEcualizador only re-attaches the equalizer when the native
player session id actually changes. A short transient interruption keeps
the SAME session (no id rotation), so that trigger never fires, while
Android's AudioEffect framework can let a higher-priority client silently
disable this app's effect instance in the meantime.
Add reaplicarEcualizador() to ObjetivoAudioInterrumpible, implemented as a
thin delegate to the existing _activarEcualizador() (already the correct
idempotent setEnabled + re-push-gains path). ServicioAudioSession calls it
on resume-from-pause (after reanudar()) and on un-duck (after
setAtenuado(false)) -- additive to the existing session-id trigger, not a
replacement. The method takes no argument, so it can only re-assert
whatever enabled/disabled state the handler already holds -- an
interruption cycle with the equalizer OFF stays OFF.
ExoPlayer assigns a new audio session id after transient audio-focus
interruptions (navigation prompts, radar warnings), leaving the
AndroidEqualizer attached to the dead session so playback resumed
without equalization until the next station switch. The session-id
listener now detects genuine rotations through a dedicated guard and
re-activates the equalizer with the current preset, gated on EQ
availability to stay clear of player teardown/rebuild.